Showing posts with label amphibians. Show all posts
Showing posts with label amphibians. Show all posts

Malaysia: Alien fish invasion -- Melaka enforces ban on imported fish species

JANE RAJ New Straits Times 8 Jun 17;

MELAKA: The Melaka Fisheries Department today enforced a ban on imported genus and species of fish which pose a danger of disrupting the biodiversity and stability of the marine ecosystem here.

A total of 35 premises dealing with the sale of aquarium fish in Melaka, will be given explanation on the banned genus and species under Section 61 of the Fisheries Act 1985.

A total of 15 genus including Trout, Lepisosteus, Salmon, Sturgeon, Peacock Bass, Arapaima, Northern Pike, Serrasalmus, Serrasalmo, Pygopritis, Piaractus, Mylossoma, Myletes, Pygocentrus, Catoprian, Flower Horn, Myleus, Pristobrycon and species of Red Claw are banned.

Melaka Fisheries Department deputy director Doreen Wee Siew Leen led the operation and gave clarifications to 12 different premises this morning.

"Today, we will be giving clarification to the owners of the premises and will make them put up posters of the banned fish," she said.

She added that no one can sell, buy or rear the banned genus and species in Malaysia without a permission letter from the Fisheries Department.

She said the reason for banning these fish was because they pose a threat of becoming dominant and cause the extinction of native fish in the river.

This, she said, would also affect the economy and the industry if the banned fish breed in a large scale and kill other local species which contribute to the food supply.

"It would be a predator because it grows twice as big compared to our local fish. Fish such as mahseer and carp will decrease if we don't take action now," she said after the operation in Melaka Tengah.

These banned breeds of fish can also cause the local fish disease including the Koi Herpes Virus, Epizootic Ulcerative Syndrome, Spring Viraemia of Carp.

Based on the inventory done by the department, local fish are decreasing due to this imported fish which are banned.

"Certain owners, are not able to care for these fish due to its rapid growth and expenditure. Eventually they will release those fish in any river nearby," she said.

Doreen said the fish which are banned will be an interference to the ecosystem, and biodiversity of a river.

"To those who does not possess a permission letter, they will be given one month to apply.

"If they do not take any action, we will carry on with the enforcement." she said.


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Malaysia: Stop the killing and save our paddy frogs, says nature group

BALVIN KAUR New Straits Times 4 Nov 26;

GEORGE TOWN: Sahabat Alam Malaysia (SAM) has called on the federal government to completely ban the capturing, selling and killing of frogs, in view of the amphibian’s important role in our ecological system.

Its president S.M. Mohamed Idris said frogs are needed to control the insect population as they prey on mosquitoes, grasshoppers and flies, among others.

“Largely insectivorous, a frog can eat more than its weight (about 200 grams) each day and this can be translated into a significant amount of insects.

“Tadpoles feed on algae and plants, thereby keeping waterways clean, while some species feed on all mosquito larvae,” he said, adding that this includes Aedes mosquitoes which can carry the dengue and Zika virus.

“To control these diseases, we have to protect the frogs.”

Idris was speaking at a press conference at Jalan Kennedy here yesterday.

He pointed out in Malaysia there were two types of paddy frogs, Rana cancrivora and Rana limnocharis, which feed on insects in the paddy field ecosystem.

“The paddy crop serves as the insects’ food source and (the) frogs help to eradicate insect pests in rice fields. Frogs in the field reduce the population of stemborers and planthoppers, thus preventing rice sheath blight disease indirectly,” he said.

Idris said the frog population in Malaysia was already at risk with rampant jungle clearing and also environmental pollution.

“Being amphibians, toxic chemicals from the environment – both on land and in water – are easily absorbed through their thin permeable skin,” he said.

He added that polluted waterways have either killed them or cause grotesque mutation brought upon by endocrine disrupting chemicals.

“It is ironic that farmers appear to prefer spraying their fields with expensive toxic chemicals rather than use frogs for efficient pest control,” he said.

He is appalled that these paddy frogs are not valued for its role in pest control but caught and sold instead at the markets in Air Itam and Batu Lanchang.

“The Rana cancrivora is in great demand at the local restaurants. At the markets there is an irregular supply of frogs and they are readily snapped up whenever available.

“However, it is not known whether the voracious appetite for frogs has depleted the frog population in Malaysia as there has been no survey into their numbers,” he stated.

Idris also claimed that SAM is worried if the frogs sold in the market have been exposed to chemical pollutants, particularly endocrine disruptors, which could trigger cancerous tumours, birth defects, and other developmental disorders if consumed by the people.

He said the amphibian’s population has also been a serious concern lately as scientists and biologists worldwide have noted the mysterious disappearance of frogs and toads.

“In view of the benefit of keeping frogs and the dangers of eating them, the federal government should immediately impose a ban,” he stressed.


Ban sale of frogs, says SAM
The Star 7 Nov 16;

GEORGE TOWN: Frogs are being sold openly at markets here to the dismay of Sahabat Alam Malaysia (SAM) which wants the Govern-ment to impose a ban on their capture, sale and killing.

SAM president S.M. Mohamed Idris said the amphibians should be protected as they played a role in reducing the mosquito population.

He said tadpoles fed on algae and plants, thereby keeping waterways clean.

He said the tadpoles of some frog species also ate the larvae and eggs of the Aedes mosquitoes.

“Mosquitoes carry diseases and kill 725,000 people worldwide per year. In Malaysia, there were almost 20,000 dengue fever cases last year alone,” Mohd Idris said in press release.

He also said that in Malaysia, there were two types of padi frogs — Rana cancrivora and Rana limnocharis — which were deemed ‘farmers’ best friend’ as they fed on padi pests such as stem borers and plant hoppers.

In demand: A trader seen selling frogs near the Air Itam market in Penang. (Inset) Farmed frogs being sold at the Batu Lancang market.
In demand: A trader seen selling frogs near the Air Itam market in Penang.
He said the number of frogs were decreasing due to the rampant clearing of jungles for cultivation and also due to pollu-tion from toxic chemicals which are easily absorbed by the am-phibians through their thin permeable skin.

“It is ironic that farmers prefer spraying their fields with expensive toxic chemicals rather than making use of frogs as efficient pest control.

“Herbicides, pesticides and chemical fertilisers remain frogs’ biggest threat,” Mohd Idris said.

He said the Rana cancrivora was in demand by local restaurants.

“At the markets, there is an irregular supply of frogs and they are readily snapped up by housewives whenever available.

“However, it is not known whether the voracious appetite for frogs has depleted the frog population in Malaysia as there has been no survey into their numbers,” he said.

A check by The Star yesterday found frogs being sold openly at Air Itam and Batu Lancang.

A 45-year-old trader at the Batu Lancang market said he was selling about 20 frogs a day at RM12 each.

“I get my supply from a frog farm in Kedah,” said the man who has been in the business for four years.

A couple who sold frogs at between RM5 and RM20 each by the roadside near the Air Itam market said their customers included students who bought the frogs to be dissected in school for their studies.


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Skin-eating Asian fungus imperils world's salamanders

Will Dunham Reuters Yahoo News 31 Oct 14;

WASHINGTON (Reuters) - A skin-eating fungus that infiltrated Europe through the global wildlife trade is threatening to inflict massive losses on the continent's native salamanders including extinction of whole species and could do the same in North America, scientists say.

An international research team said on Thursday the fungus, first detected in Europe last year, has killed salamanders in the Netherlands and Belgium and is expected soon to reach other European nations. They said it is closely related to another fungus that already has wiped out some amphibian species.

The scientists have found no sign of the fungus in North American amphibians but worry that it is only a matter of time before it surfaces via a pet trade that has funneled millions of Chinese fire belly newts to the United States.

The researchers tracked the origins and geographical presence of the fungus, Batrachochytrium salamandrivorans, by examining about 5,400 samples accounting for about 150 varieties of amphibians in Europe, Asia, North America and Africa.

They also exposed 35 amphibian species to the fungus to learn which were vulnerable. The study, published in the journal Science, found it can kill numerous kinds of salamanders and newts, a subgroup of the salamander family, but not other amphibians including frogs, toads and snake-like caecilians.

The fungus was discovered by scientists probing a die-off of fire salamanders in the Netherlands. It invades a salamander's skin, an organ vital to its respiratory system, causing ulcers.

"There is little we can do to stop further spread on mainland Europe other than preventing people from moving infected salamanders between countries," said Matthew Fisher, a professor of fungal disease epidemiology at Imperial College London who was one of the researchers.

"If (the fungus) arrives in the USA then millions, if not billions, of salamanders are likely to die and species extinctions may occur."

The findings illustrate the threat posed to native creatures by pathogens spread through the international wildlife trade. Asian salamanders and newts are sold worldwide in huge numbers.

"The uncontrolled trade of animals should be regulated worldwide, and traded animals should be tested for the presence of pathogens that can affect wildlife with special emphasis to prevent introduction of (the fungus) to islands and regions where it is currently absent," said An Martel, a veterinarian at Ghent University in Belgium who led the study.

The fungus appears to have originated in Southeast Asia 30 million years ago, reaching Europe recently through the trade in Asian newts.

Using museum specimens, the scientists determined the fungus was present in amphibians from Thailand, Vietnam and Japan as early as the 19th century without causing disease. That indicates creatures in the region have developed resistance but those from other regions may be highly vulnerable.

University of Maryland ecologist Karen Lips, another of the researchers, underscored the danger in North America, saying, "The impact on our native salamander diversity might be very high because the U.S. is the world's greatest biodiversity 'hot spot' for salamanders. We have more species and families here than anywhere else in the world."

(Reporting by Will Dunham; Editing by Sandra Maler)


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Malaysia: Save our frogs.... and toads

Suzanna Pillay New Straits Times 20 Oct 13;

FOREST JEWELS: Environmental groups often champion the preservation of other species of fauna, but experts say certain species of frogs and toads that are endangered need protection, too, writes Suzanna Pillay

TRAIPSING through the jungle in search of a lost frog species might seem like a lost cause to most people, but to postgraduate student Ong Jia Jet, it is a worthy passion.

In June 2011, Ong, who is pursing a masters in herpetology, was a member of a small expedition, funded by Shell Chair and Universiti Malaysia Sarawak's (Unimas) Institute of Biodiversity and Environmental Conservation, that rediscovered the rare Bornean Rainbow Toad (Ansonia latidisca), an amphibian not seen since 1924.

The rediscovery of the species at the higher elevations of Gunung Penrissen in Western Sarawak attracted worldwide interest and was a triumph for the expedition, which managed to snap the first-ever photograph of the toad.

Prior to the rediscovery, the only clues to the toad's appearance were illustrations by early European explorers. Also known as the Sambas Stream Toad, it was listed as one of the "World's Top 10 Most Wanted Lost Frogs" in a 2010 campaign by Conservation International and International Union for Conservation of Nature Amphibian Specialist Group, with support from Global Wildlife Conservation.

"The Search For Lost Frogs" campaign encouraged scientists worldwide to search for 100 threatened amphibian species not seen for decades.

"During my three-month internship with Unimas' Institute of Biodiversity and Environmental Conservation in 2011, I joined the research team, led by my supervisor, Professor Indraneil Das, to search for this lost frog.

"Initial searches for the Bornean Rainbow Toad had been fruitless. Then, one lucky night while we were exploring the higher elevations of Gunung Penrissen above 1,000 feet, with one of Das' graduate students, Pui Yong Min, we rediscovered three of them on three mature trees near the forest trails."

Intrigued by the find, Ong wanted to know more about the little-known tree-dwelling toad.
"How could a toad that had been missing for so many years reappear?"

He applied to London-based Rufford Small Grant for Nature Conservation for a grant to study the toad further and was successful.

For the past year, Ong has been busy with fieldwork, investigating the ecology of toads in their natural habitat.

Having completed his study, he is working on a thesis and describes the results from his fieldwork as being very encouraging.

"Information on the natural history of the toad is totally new to science. It adds to the limited knowledge of anuran amphibians (frogs and toads) in Borneo.

"To date, we have good data on what they eat and where they are distributed along the jungle trails.

"A tiny population of the Rainbow Toad still exist in the upper range of Gunung Penrissen. Their primary diet consists mainly of ants and beetles."

Another major achievement of his study, Ong added, was the world's first recording of the toad's call.

"Each species of toads and frogs has its own distinct calling patterns. Only the males make these calls."

Ong said the study had shown that the arboreal species survived only in the unprotected primary forest of the Penrissen range vulnerable to logging.

"We are not sure about the exact population size, but we are certain that the species is not widespread and has to be protected.

"I hope that important sites or the known localities of the species can be effectively preserved."

In the International Union for Conservation of Nature Red List of Threatened Species, the Rainbow Toad is listed as endangered because of habitat loss and threats from forest fragmentation.

Ong said logging had ceased in the upper part of the Penrissen range, but the current threat to the toad's survival is land conversion for recreational use and illegal wildlife trade for exotic species.

"I refrain from divulging the exact site where I had discovered the population, owing to the intense demand for brightly-coloured amphibians by those involved in the pet trade.

"The Rainbow Toad is vulnerable to the illegal wildlife trade for exotic species."
Like his student, Das enjoys working with frogs and toads and enjoys highlighting their diversity in Sarawak and Borneo.

"Kubah National Park, for instance, is such an important study research area for frogs because about 56 species of amphibians are now known to exist here. A specific site -- the "Frog Pond" -- is the breeding site of at least 16 of these species, all of which can be seen easily."

An interesting frog species that Das co-discovered in the national park in 2010 with German researcher Dr Alexander Haas from the Biozentrum Grindel und Zoologisches Museum of Hamburg was the micro-sized Matang Narrow Mouthed Frog (Microhyla nepenthicola), which breeds within Nepenthes ampullaria pitcher plants.

"We made the discovery by accident. We heard the calls of an unknown frog and were drawn to a pitcher plant along the way. The tiny frog's call sound is similar to running your finger over the teeth of a comb.

"We were very surprised to discover the tiny species thriving in a plant that contains fluid for digestion. In this case, the pitchers contain very weak acid and can be inhabited by the tadpoles produced by the micro-sized frogs.

"Considered as one of the smallest frogs in the world, the adult males of this species range in size between 10.6mm to 12.8mm long and are described as being no bigger than a pea."

In April, the Institute of Biodiversity and Environmental Conservation and Sarawak Forestry Corporation co-organised The Bornean Frog Race, an event that coincided with the annual world "Save The Frogs Day".

Open to the public, it included talks on amphibians and their conservation, in addition to exhibits of sights and sounds, and a photography competition. It was the second time that the event was held in the state.

"Amphibians, for their dual requirement of both clean water and intact forests, make themselves suitable surrogates of tropical biodiversity and useful indicators of the health of the environment," said Das.

"If one of these two elements are missing from an environment, chances are that frog species, too, would not be present.

"Creation of protected areas, such as national parks like Kubah, is perhaps the best way to protect amphibian species whose survival is particularly threatened by habitat destruction.

"Rates of deforestation are high in Borneo, the major driver being logging for hardwood and land clearing for oil-palm plantations and urbanisation. During the dry season, many forests are prone to fire that are accidentally started or by settlers to clear vegetation for agricultural purposes.

"Haze probably affects the frogs negatively, but we have no data that supports this. Many chemical particles in the environment are bad for species with sensitive skin, such as frogs."


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Alarm over vanishing frogs in the Caribbean

Ben Fox and Ezequiel Abiu Lopez Associated Press Yahoo News 11 Apr 13;

PATILLAS, Puerto Rico (AP) — A curtain of sound envelops the two researchers as they make their way along the side of a mountain in darkness, occasionally hacking their way with a machete to reach the mouth of a small cave.

Peeps, tweets and staccato whistles fill the air, a pulsing undercurrent in the tropical night. To the untrained ear, it's just a mishmash of noise. To experts tracking a decline in amphibians with growing alarm, it's like a symphony in which some of the players haven't been showing up.

In parts of Puerto Rico, for example, there are places where researchers used to hear four species at once and they are now hearing one or two, a subtle but important change.

"You are not hearing what you were before," said Alberto Lopez, part of a husband-and-wife team of biologists trying to gauge the health of frogs on the island.

Scientists report that many types of amphibians, especially frogs, are in a steep global decline likely caused by a mix of habitat loss, climate change, pollution and a virulent fungus. The downward spiral is striking particularly hard in the Caribbean, where a majority of species are now losing a fragile hold in the ecosystem.

Without new conservation measures, there could be a massive die-off of Caribbean frogs within 15 years, warned Adrell Nunez, an amphibian expert with the Santo Domingo Zoo in the Dominican Republic. "There are species that we literally know nothing about" that could be lost, he said.

Researchers such as Lopez and his wife, Ana Longo Berrios, have been fanning out across the Caribbean and returning with new and troubling evidence of the decline. In some places, especially in Haiti, where severe deforestation is added to the mix of problems, extinctions are possible.

It is part of a grim picture overall. The International Union for the Conservation of Nature has found that 32 percent of the world's amphibian species are threatened or extinct, including more than 200 alone in both Mexico and Colombia.

"Everywhere we are seeing declines and it's severe," said Jan Zegarra, a biologist based in Puerto Rico for the U.S. Fish and Wildlife Service.

Frogs may be less charismatic than some other troubled species, but their role in the environment is important. They are consumed by birds and snakes and they in turn are major predators of mosquitoes. Their absence could lead to a rise in malaria and dengue, not to mention discomfort.

There are also less tangible reasons for protection. The coqui, the common name for a genus that includes 17 species in Puerto Rico, including three believed to be already extinct, is important to the cultural heritage of the island; it's considered a symbol of the island, seen in everything from indigenous petroglyphs to coffee mugs sold to tourists at the airport. Frogs, which breathe and process toxins through their skin, are considered a promising area for pharmaceutical research and a bio-indicator that can tell scientists about what's going on in the environment.

"We are just starting to understand the ripple down effects and the repercussions of losing amphibians," said Jamie Voyles, a biologist at New Mexico Tech in Albuquerque and one of the principal investigators of Project Atelopus, an effort to study and protect frogs of an endangered genus in Panama.

Rafael Joglar, a biologist at the University of Puerto Rico, has noted the diminishing nighttime calls in decades of research on the island and not just from the three species believe to have gone extinct. "Many of the other species that were common when I was a younger student ... are now disappearing and are actually very rare."

In percentage terms, the worst situation for frogs is the Caribbean, where more than 80 percent of species are threatened or extinct in the Dominican Republic, Cuba and Jamaica and more than 90 percent in Haiti, according to the International Union for the Conservation of Nature. In Puerto Rico, it's around 70 percent.

"The frogs in the Caribbean are in very bad shape," Joglar said.

One major reason the Caribbean is so vulnerable is that many species are found only within a small habitat on just one island. Take, for example, the coqui guajon, or rock frog, which was the focus of attention by Lopez and Longo on a recent night. About the size of a golf ball, it is what's known as a habitat specialist, found only in caves of a certain kind of volcanic rock along streams in southeastern Puerto Rico.

There are 17 known spots designated by the U.S. Fish and Wildlife Service as critical habitat for the rock frog, all of them on private land. Longo and Lopez, working for a research and public education initiative called Proyecto Coqui, have been trying to determine the health of the populations on those isolated patches.

"That's why it's such a vulnerable species," Lopez said. "If something happens to the habitat, people can't just grab them and put them in another place on the island because this habitat is only found on the southeast of the island."

In densely populated Haiti, the degradation of the environment has been so severe that only a handful of species are known for certain to still be viable in the country and even they are in trouble, said S. Blair Hedges, a biology professor at Pennsylvania State University who has studied frogs in the Caribbean since the 1980s.

"I'm really certain that some species are going over the edge, are disappearing," Hedges said.

Frogs have been under siege around the world from a fungus called Batrachochytrium dendrobatidis, known for short as "Bd," which has been known to be weakening and killing amphibians since the late 1990s though much about it remains under scientific study, Voyles said. Its effects, however, are dramatic.

"When I first went to Panama the sounds at night were incredible and now it's just silent," she said. "It's hard to communicate the absence of that incredible cacophony of beautiful sounds. It's very striking how much we have lost."

Among research efforts on the fungus is one by Lopez and Longo, who have been catching frogs in the forest, checking them for Bd and ticks, and then releasing them back into the night. They have started finding the fungus in the coqui guajon and are still trying to determine how it will affect the population.

After three weeks on the winding back roads of Puerto Rico, politely knocking on people's doors to ask if they could root around on their land for frogs, the researchers were relieved to find plentiful specimens. But they were also dismayed to confirm that one place designated as critical habitat had not a single coqui guajon left.

"To our surprise, the habitat is there, but no frogs, no frogs at all," he said.

_____

Associated Press writer Trenton Daniel contributed from Port-au-Prince, Haiti; Lopez reported from the Dominican Republic; Fox reported from Puerto Rico.


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A third of frogs in danger of extinction

Borneo Post 4 Apr 13;

KUCHING: A third of frogs are in danger of going extinct, mostly from human-induced factors, said professor of herpetology Dr Indraneil Das.

However, the amphibians are being discovered faster than scientists can describe them, with 7,044 species (including other amphibians) recorded and new ones emerging every week.

During ‘The Amazing World of Frogs’ talk held by the Malaysian Nature Society (MNS) Kuching on Tuesday, Das from the Institute of Biodiversity and Environmental Conservation Universiti Malaysia Sarawak (Unimas) said frogs and other amphibians are our window to nature.

“By protecting frogs, we automatically protect nature,” he said, adding that frogs need both good forests and clean streams to survive.

He said frogs could potentially hold answers to human ailments.

Das described one genus of frogs where the mother would swallow the fertilised eggs, incubate them in her stomach and regurgitate them as young frogs.

Their ability to halt their digestive process with the eggs could have provided a cure for gastric, he said.

Sadly these particular frogs went extinct shortly after they were described.

While it is a better know fact that male frogs primarily call to attract females, Das said that certain species of frogs also emit a distress call when grabbed.

“Very often, the victim will have no chance of getting away when grabbed, but it will still make noise.”

He said that it is possible to tell if there is a snake in the vicinity by the calls made.

“Even if the frog is swallowed by the snake, you can still hear them call from inside the stomach. So what is the function? You have to devote some serious behavioural theories to understand this.”

On a lighter note, he said male frogs also have a specific release call they use when grabbed by another male.

He also warned those who come into contact with frogs to wash their hands thoroughly.

“Frogs are full of different chemicals on their skin, and are not to be messed with,” he said.

Das said there are over 180 species of frogs in Borneo, based on their limited research and unpublished research.

“Around 110 species were described in Mulu alone,” he said, before pointing out that Southeast Asia and South America are hotspots for amphibian research.

Meanwhile, the Bornean Frog Race 2013 will be held on April 27 at Kubah National Park.

Held in celebration of the international ‘Save the Frogs Day’, the race hopes to raise public awareness of declining populations of frogs and other amphibians.

Event general-secretary Pang Sing Tyan said 65 of the 100 spots have been filled.

“Those who do not want to join the race itself can still attend the talks and workshops in the afternoon,” she said.

The race will involve participants following designated trails in the national park within two hours to take photographic evidence for the most number of amphibians found, rarest amphibian found, and best amphibian photo taken.

Registration is RM25 for students, RM30 for non-students and RM50 for foreigners.

Participants must bring along their camera with appropriate flash, lenses and download cables.

For more information, go to http://theborneanfrograce2013.weebly.com or www.facebook.com/TBFR2013.

Read more: http://www.theborneopost.com/2013/04/04/a-third-of-frogs-in-danger-of-extinction/#ixzz2PSFFJZZ8


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Buddhist practice may be endangering frogs here

Chytrid fungus detected on local frogs partly responsible for global decline of amphibian species
Zara Zhuang Today Online 11 Mar 12;

SINGAPORE — The Buddhist practice of releasing live animals into the wild to demonstrate piety may be harming the local frog population, with a deadly fungus recently detected for the first time on frogs in Singapore.

According to Assistant Professor David Bickford of the National University of Singapore’s Department of Biological Sciences, well-meaning practitioners could be introducing diseased frogs into the wild, causing the spread of the chytrid fungus.

In a study conducted by NUS and the Wildlife Conservation Society, the samples that tested positive for chytrid fungus were obtained from local pet stores and the wild, showing that the fungus is being spread through complex international trade of frogs.

The fungus is believed to be partly responsible for the global decline of amphibian species as it inhibits frogs’ ability to breathe through their moist skin, causing them to suffocate, explained Asst Prof Bickford.

On the importance of raising awareness of the chytrid fungus and the role frogs play in the local ecosystem, Asst Prof Bickford said that frogs play a vital role in the food web.

As amphibians that straddle land and aquatic habitats, they also serve as indicators of water quality. ZARA ZHUANG

Related links
Please don't release animals in our wild places on wildsingapore


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Deadly Fungus Detected in Southeast Asia's Amphibian Trade

ScienceDaily 6 Mar 13;

A team of scientists led by the Wildlife Conservation Society (WCS) and the National University of Singapore (NUS), revealed in a new study, for the first time, the presence of the pathogenic chytrid fungus (Batrachochytrium dendrobatidis) in amphibians sampled in Singapore. And the American bullfrog may be a central player in the spread of the disease.

The study appears in the current issue of the journal EcoHealth, and is the first to consider the role that Southeast Asia's commercial trade plays in the spread of amphibian pathogens.
Demand for amphibians through local and international trade is high and fueled by use of frogs as pets, food, bait, and as a source of traditional 'medicine.' More than 40 percent of amphibian species are in decline globally due, not only to chytrid fungus, but also overharvesting, competition from invasive species, habitat loss, pollution, and climate change.

In the study, scientists collected samples from 2,389 individual animals in Lao PDR, Cambodia, Vietnam, and Singapore at 51 different sites including farms, locally supplied markets, pet stores, and from the wild.

The molecular testing of samples was led by Dr. Tracie Seimon at WCS's Molecular Diagnostic Laboratory at the Bronx Zoo. Results showed that frogs from Lao PDR and Vietnam tested negative for chytrid. In Cambodia, one frog intended for food tested positive. In addition, 74 animals in Cambodia and Vietnam were screened for ranavirus and tested negative, suggesting that these specific pathogens are not yet a conservation threat in species tested from these countries.

In Singapore, however, 13 samples tested positive for chytrid and represent the first report of chytrid in the territory. Eleven of those samples were collected from four pet stores and the remaining two were taken from amphibians in the wild.

The scientists noted that the chytrid detections were most prevalent in the American bullfrog (Lithobates aka Rana catesbeiana), a common species in the trade and one that is tolerant of chytrid infections.

"Finding chytrid in four of the seven Singaporean pet stores we sampled is cause for concern," said lead author and WCS Scientist Martin Gilbert. "Since the American bullfrog is able to tolerate this pathogen, it may act as a carrier for spreading chytrid to the region when it is imported through commercial trade."

In another alarming discovery, the scientists found that all 497 frogs sampled from 23 frog farms in Vietnam had skin lesions ranging from swelling and inflammation to ulcers and deformed or missing digits in the most severe cases. Disease examination revealed four of the animals had bacteria associated with the lesions that in two cases appeared to have spread to other organs.

While the bacteria and its role as primary or secondary pathogen could not be positively identified, the scientists noted that frog farms could serve as a source of infection for the wider environment.

The study noted that lesions among frogs raised at commercial facilities in Vietnam are of particular concern, in light of the low level of bio-security that exists. All of the farms in the study disposed of untreated wastewater directly into natural watercourses, which becomes an avenue to spread infection to other places and other species.

According to the authors, the World Organization for Animal Health (OIE) requires its 174 member countries, which include the four countries in this study, to conduct surveillance for chytrid fungus, report confirmed cases, and implement measures to control their spread.

Co-author of the study, Assistant Professor David Bickford from the Department of Biological Sciences at the NUS Faculty of Science, said, "In light of the fact that this emerging infectious disease is now known to be spread by commercial trade, it is in everyone's best interest to eliminate it from the trade in live animals before both the native amphibian populations of Southeast Asia are affected and before it completely decimates the commercial trade and people are unable to make a living. This is not just about the frogs."

The paper concludes, "There is an urgent need to conduct wider surveys of wild amphibians in Southeast Asia to determine the extent and severity of chytrid fungus and other infectious diseases among a range of species, and whether and how these change over time. Studies should focus on differentiating Batrachochytrium dendrobatidis strains that may be endemic to the region from exotic strains that may be introduced through routes including international trade."

Authors of the study include Martin Gilbert of WCS; David Bickford of NUS; Leanne Clark, Arlyne Johnson, Priscilla H. Joyner, Lucy Ogg Keatts, Kongsy Khammavong, Long Nguyễn Văn, Alisa Newton of WCS; Tiffany P. W. Seow of NUS; Scott Roberton, Soubanh Silithammavong of WCS; Sinpakhone Singhalath of the National University of Laos; Angela Yang, and Tracie A. Seimon of WCS.

Captive frogs may be spreading diseases to wild cousins across Southeast Asia
Mongabay.com 7 Mar 13;

Scientists have documented a series of links between exotic frogs for trade and diseases in wild frogs in Southeast Asia, including the first documented case of the chytrid fungus—a virulent and lethal disease—in Singapore. According to researchers writing in a new study in EcoHealth, frogs imported into Southeast Asia as pets, food, or traditional medicine are very likely spreading diseases to wild populations.

Collecting samples of some 2,300 wild and captive frogs across four countries (Laos, Cambodia, Vietnam, and Singapore), researchers found that disease was widespread. Most worryingly, the researchers found chytrid fungus on two wild frogs and eleven captive frogs in Sinapore. In fact, four out of seven pet stores visited on the island nations sold frogs already infected with chytrid. They believe the American bullfrog is the primarily culprit.

"Since the American bullfrog is able to tolerate this pathogen, it may act as a carrier for spreading chytrid to the region when it is imported through commercial trade," explains lead author Martin Gilbert with the Wildlife Conservation Society (WCS).

Chytrid fungus has spread rapidly around the world, decimating even remote and protected frog populations. It is believed to be responsible, at least in part, for a number of extinctions worldwide.

Fortunately the team didn't detect chytrid fungus in Laos or Vietnam, but did find one imported frog—to be sold as food—that was carrying the disease. Another worrisome disease, ranavirus, was not discovered during testing.

However, the researchers also report that amphibians in Vietnamese frog farms were rife with skin lesions. Every frog tested—497 individuals—at 23 different facilities sported some type of skin disease from inflammation to missing digits.

"In light of the fact that this emerging infectious disease is now known to be spread by commercial trade, it is in everyone’s best interest to eliminate it from the trade in live animals before both the native amphibian populations of Southeast Asia are affected and before it completely decimates the commercial trade and people are unable to make a living," said co-author David Bickford with the NUS Faculty of Science, adding, "This is not just about the frogs."

Amphibians are among the world's most endangered family groups: habitat loss, over-exploitation, invasive species, pollution, and disease has put nearly 41 percent of the world's amphibians are considered threatened with extinction.


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Flying frog: new species discovered near Ho Chi Minh City

Samantha-Jo Harris Sydney Morning Herald 10 Jan 13;

Usually when the Australian Museum's Dr Jodi Rowley searches for new species of frogs she has to trek to remote locations and through the difficult terrain of Vietnam's mountains.

But Dr Rowley and her Vietnam colleagues were stunned to find their latest discovery of a new species of "flying frog" not too far from one of the largest cities in south-east Asia.

"It was really surprising to come across this huge frog so close to a heavily populated area," Dr Rowley said.

Helen's tree frog (Rhacophorus helenae), named after Dr Rowley's mother, was discovered in a lowland forest in Vietnam, an area completely surrounded by agricultural land, less than 100 kilometres from Ho Chi Minh City.

Despite being commonly referred to as a "flying" frog, Dr Rowley says: "The name 'flying' frog is a little misleading as it doesn't really fly. Rather it uses its feet as parachutes to help it glide through the canopy."

But the canopy this 10-centimetre long frog calls home is under threat due to habitat loss and land degradation.

"Usually species are protected because they are in remote locations, but as this frog is so close to human activity it is at a great risk." Dr Rowley said.

She says discoveries of new species are important to conservation as it ensures species are protected.

"These forests are some of the most threatened habitat in the world so discoveries like this are very important. The first thing we need to know is what we have and the second step is to conserve what we discover."

Dr Rowley has been working in the area since 2006 and has made previous discoveries of new species, including the vampire flying frog and working in collaboration to discover and describe 12 new species in south-east Asia.

She says it is not uncommon for certain species to remain undiscovered when they live in the forest canopy.

"Species still do escape scientific attention, which makes every discovery exciting. We often don't know about them and they are protected because they live in areas that are so hard to get to."

Dr Rowley said naming the frog in honour of her mother, Helen, was the perfect way to thank her for years of support.

"At the time my mum had just been recently diagnosed with ovarian cancer and I thought it was about time I show her how much I appreciate all she has done for me over the years," she said. "It was a very difficult time, but she finished chemotherapy about a year ago and she is doing OK."


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Asian frogs becoming extinct before they can be identified, biologists warn

Scientists fear amphibian destruction will be disastrous, with many species disappearing uncatalogued
Fiona Harvey guardian.co.uk 12 Sep 12;

Frogs and other amphibians are being wiped out at such a rapid rate across Asia that many are going extinct before scientists even have a chance to identify them as new species, biologists warned at an international conservation meeting in South Korea this week.

The scale of the destruction – caused by habitat loss, disease, pollution and other factors – is hard to quantify, but scientists fear the result will be disastrous. Amphibians have been suffering a wave of devastation all around the world, in part because of the spread of the fungal disease Batrachochytrium dendrobatidis, known as BD or chytrid fungus, which has wiped out whole populations within the space of a few years.

But while conservation and monitoring efforts have so far focused on the Americas and Europe, little work has yet been done in the world's most populous continent, with the result that many amphibian species there are as yet uncatalogued and unstudied. For instance, according to one researcher, there are probably at least three to four times as many amphibian species in India alone as are currently catalogued.

"These creatures are disappearing before we even know they exist. We know this is happening – this has already been shown in cases such as Sri Lanka," said Bruce Waldman, associate professor at Seoul National University in Korea. "These are living jewels – but we don't know even how many we have, and we are not saving them."

He said rapid economic development in Asia was taking a toll on amphibians, with an increase in the level of nitrogen pollution in the water, from fertiliser use, and habitats being rapidly destroyed.

He called for an urgent approach to the problem in Asia and across the world: "We need to very quickly address the global crisis in amphibians."

Frogs and other amphibians are among the most threatened creatures in the world today – globally, at least a third, probably 40%, of amphibian species are in urgent danger of extinction, making a total of more than 2,000 species of amphibian so far documented to be officially "threatened", "endangered" or "vulnerable", classifications used by scientists to describe the level of threat. "This is higher than any other terrestrial animal," said Jaime García-Moreno, executive director of the Amphibian Survival Alliance.

The plight of frogs and other amphibians is of particular concern to scientists because many think the devastation afflicting them could be a foretaste of that in waiting for other creatures. Their physiognomy makes amphibians particularly sensitive to small changes in their environment, including temperature changes such as global warming, and to water and air pollution.

This sensitivity, some scientists believe, could be behind the sudden and unexpected extinction of certain species even from well-protected areas. Waldman pointed to the golden toad of Costa Rica which "disappeared from a pristine habitat".

García-Moreno said that the loss of frog species could have knock-on effects not just on biodiversity and the food chain, but on human development. He pointed to research that has identified naturally occurring chemicals, such as skin secretions from frogs, that can be turned into medicine to treat human beings.

"Amphibians play a very important role in ecosystems – they are a conveyor of energy and nutrients from very small animals to larger animals," he said. "They are natural pest controllers too. Some have chemicals in their skins that can be useful to medical treatments, such as cancer and perhaps Aids. We must try to conserve these creatures."

Scientists could also learn more about the deadly chytrid disease from studying Asia, noted Mi-Sook Min, research professor at Seoul National University. Some indicators suggest the disease could even have come from the continent, as most cases to date have been found in other continents which may indicate a long history in Asia whereby amphibians have evolved to live with the disease. However, there are also indications in other research that the disease could have been existing in Latin America since the 1880s.

Waldman emphasised: "We just don't know – in fact the Asian crisis [over the disease] may be even worse [than in other, better documented areas] but we just don't have enough information. We are overwhelmed by our ignorance."

Global trade, including the pet trade but also commerce more generally, has helped the fungus to spread widely. In some afflicted areas, frog populations plummeted by 95% in less than a decade. The fungus appears to disrupt fluid and electrolyte balance in frogs, depleting their sodium and potassium levels and causing cardiac arrest and death, according to research from the University of California, Berkeley, and the San Francisco State University.

García-Moreno said some areas of trade were badly monitored. For instance, millions of frogs' legs are sold, imported and exported around the world today for human consumption, with few restrictions or monitoring. He called for tighter controls.

The scientists, presenting their work at the World Conservation Congress, the quadrennial meeting of the International Union for Conservation of Nature, in Jeju this week, called for more research into amphibians in Asia as a matter of urgency.


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Live Bullfrog Trade Implicated in Amphibian-Killing Disease

LiveScience.com Yahoo News 10 Aug 12;

Bullfrogs, often shipped live between continents to be eaten, are spreading the deadly chytrid fungus that is threatening amphibians worldwide, new research indicates.

A team of researchers collected bullfrogs on sale at Asian food stores in seven cities in the United States and found 41 percent of the frogs were infected with the fungus.

The chytrid fungus is harmless to people, but it has caused species declines and even extinctions among amphibians. However, it is not fatal to all amphibians. The fungus doesn't kill the North American bullfrog, the type of frog sampled in this study, making this species an excellent carrier.

Frogs in these U.S. shops are imported live primarily from farms in Taiwan, Brazil and Ecuador. In the United States, the live frogs are then sold for their legs.

The team also looked for fungus at frog farms in Brazil and among several native frog species from Brazil's Atlantic Forest, one of the most amphibian-rich regions in the world.

Their work revealed four new strains of chytrid, also known as Batrachochytrium dendrobatidis or Bd. One of these was found on a bullfrog in southeastern Michigan. This frog appeared to have come from a farm in the Atlantic Forest region, where sampling from native frogs revealed that the four strains are common.

By comparing these strains with those described from studies in Japan, the team found Brazilian chytrid had made its way to Japan.

The Brazilian chytrid probably first infected native frogs in Brazil, spread to farms, and from there, around the world, the researchers say. [7 Devastating Infectious Diseases]

The trade in frogs has probably led to the global spread of the disease, said study researcher Timothy James, a University of Michigan evolutionary biologist.

"A lot of the movement of this fungus is related to the live food trade, which is something we should probably stop doing," James said in a statement. "We don’t need to have millions of live frogs being shipped from foreign countries into the United States."

The research was detailed online July 31 in the journal Molecular Ecology.


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Indonesia and Malaysia Home to New Frog Species

Antara Jakarta Globe 28 Jul 12;

Scientists discovered two new frog species — and named them Leptobrachium ingeri and Leptobrachium kanowitense — in a four-year study conducted in Belitung, Indonesia, and Sarawak, Malaysia.

The team of scientists was led by Amir Hamidy, of the Museum of Zoologicum Bogoriense, a research biology center run by the Indonesian Institute of Sciences (LIPI), and colleagues from Kyoto University, Universiti Kebangsaan in Malaysia and the University of Malaya. They published their findings in “Zootaxa Journal” on Tuesday.

Amir, who is currently studying in Kyoto University, said they found the Leptobrachium ingeri species in Belitung and the coastal area of Sarawak, while the Leptobrachium kanowitense was found in the inland areas Sarawak.

“The word ‘ingeri’ on one of the species is dedicated to Prof. Dr. Robert F. Inger, of the Field Museum in Chicago,” said Amir, the main writer of the report. “He is an expert on herpetology in Southeast Asia, especially in Borneo.”

Amir said that the word “kanowitense” on the Leptobrachium kanowitense was taken from the Kanowit city in Sarawak, where the frog was discovered.

He explained that the characteristics of the two newly discovered species are different to other frog species.

In frogs, a genetic difference of three percent is enough to classify it as a new species.

Amir explained that the DNA characteristics of the two new species show that they are related to the already-known Leptobrachium nigrops.

“The genetic differences between the Leptobrachium nigrops, Leptobrachium ingeri and Leptobrachium kanowitense are very wide, more than nine percent,” Amir explained. “Changes of weather and sea levels in the past caused several islands such as Borneo, Sumatra and others to break away from the Asian mainland.

“Population-isolation of each species’ ancestor occurred during the breakaway process. After the breakaway, each species experienced its own evolution and became the current species.”

In the “Zootaxa Journal,” researchers predicted that the Leptobrachium kanowitense’s ancestor invaded Borneo island much earlier than Leptobrachium ingeri’s ancestor and that they spread during the pleistocene geological era.

The Leptobrachium ingeri species currently occupies Belitung and coastal Sarawak areas while the Leptobrachium kanowitense species inhibits the Kanowit city of Sarawak.

The Leptobrachium nigrops species is mainly found in the Malay Peninsula, Sarawak and Sumatra’s eastern coast (Riau).

Researchers are still trying to determine if the new species are endemic to those areas but said it will take more research.

Antara


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New frog species found in central Vietnam

thanhniennews 14 Jun 12;

Australian and Vietnamese scientists have discovered another species of frog in central Vietnam, the Sai Gon Tiep Thi newspaper reports.

The Firth's Asian Leaf Litter Toad (Leptolalax firthi) was discovered and described by Australian Museum biologist Dr Jodi Rowley and her colleagues from the University of Science-Ho Chi Minh City, Institute of Ecology and Biological Resources and Vinh University.

The finding was published last month in Zootaxa, the world’s leading magazine for taxonomy, based in New Zealand.

The strange-looking toads were found in the forests of Quang Nam and Kon Tum provinces, according to the scientists.

Southeast Asia has been described as one of the world's biodiversity hotspots for amphibians. The website ecologyasia.com says it is a region "where a remarkable evolutionary explosion has resulted in incredible diversity of form, color and lifestyle." Over 700 species of amphibians can be found in the region.


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Malaysian Scientist Finds New Borneo Frog

Jakarta Globe 18 May 12;


This undated photo released by the World Wildlife Fund shows a Bornean flat-headed frog, which has the rare characteristic of being an amphibian without lungs, and instead breathes entirely through its skin and is one of the recent discoveries in Borneo. A lung-less frog, a frog that flies and a slug that shoots love darts are among 123 new species discovered in Borneo since 2007, the result of a three-nation project backed by the WWF to conserve one of the oldest rainforests in the world. (AP Photo/World Wildlife Fund) This undated photo released by the World Wildlife Fund shows a Bornean flat-headed frog, which has the rare characteristic of being an amphibian without lungs, and instead breathes entirely through its skin and is one of the recent discoveries in Borneo. A lung-less frog, a frog that flies and a slug that shoots love darts are among 123 new species discovered in Borneo since 2007, the result of a three-nation project backed by the WWF to conserve one of the oldest rainforests in the world. (AP Photo/World Wildlife Fund)

Kuala Lumpur. A Malaysian researcher known for finding new amphibian species said on Friday that his team had discovered at least one new species of frog in studies he said highlight Borneo’s rich biodiversity.

Indraneil Das of the Universiti Malaysia Sarawak said the brown frog is just 4-5 centimeters (1.6-2.0 inches) long and makes a distinctive high-pitched chirp.

His team discovered the frog during an expedition to the rainforests of Mount Singai in the Malaysian state of Sarawak on Borneo island in September 2010. They later found another of the same species in nearby Kubah National Park.

Ascertaining whether a species is new is a lengthy scientific process and his discovery remains to be peer-reviewed, he said.

“We heard a call we hadn’t heard before. It called from under the leaf litter. That’s probably why no one saw it before,” Das told Agence France-Presse.

“It’s the call that is very distinctive. It was high-pitched, loud and repeated.”

Das said his team had also found several other species of frog that could be previously unknown and was currently investigating them.

He now hopes to publish his findings to draw attention to Borneo’s amazing biodiversity and help promote conservation efforts of its rainforests, currently threatened by logging and other development.

Last year, Das made headlines for rediscovering a spindly-legged toad species, the Sambas Stream Toad or Borneo Rainbow Toad, almost 90 years after it was last sighted in the Borneo jungle.

The toad was listed as one of the “World’s Top 10 Most Wanted Lost Frogs” in a campaign by Conservation International and another group to encourage scientists worldwide to seek out amphibians not seen for a decade or more.

Das has also previously discovered Asia’s tiniest frog, the size of a pea, in Kubah National Park.

The Malaysian states of Sarawak and Sabah occupy the northern portion of Borneo island, which is also shared with Indonesia and Brunei.

Agence France-Presse

Two new frog species discovered
Winston Way New Straits Times 19 May 12;

ONLY IN BORNEO: Mount Singai expedition also found 30 species of amphibians, 19 species of reptiles

KUCHING: TWO frog species from the Genus Leptobrachella, believed to be new to science, were discovered around Mount Singai, 30km from here.

"The species found during the September and December 2010 expeditions to Mount Singai are being studied by Prof Dr Indranil Das," said Prof Dr Andrew Alek Tuen from the Faculty of Resource Science and Technology at Universiti Malaysia Sarawak.

Indranil, a renowned expert on frogs, had in 2009 discovered microhyla nepenthicola -- the world's smallest frog -- in Sarawak.

Last year, Indranil discovered the Bornean rainbow toad, previously thought to be extinct for 87 years.

Andrew, who led the expeditions, said this after giving a talk on the conservation of Mount Singai here on Wednesday night.

He said apart from the two species, the expeditions also found at least 30 species of amphibians and 19 species of reptiles, including 14 that were endemic to Borneo, as well as more than 200 species of vegetation.

The slopes of the 305m-high Mount Singai used to be the settlement area for the Singai Bidayuh, who now live in 12 villages around it.

Andrew also spoke about the locals' concern that the surrounding area of the High Conservation Value Forest might face environmental threats in the future.

"The area around Mount Singai was gazetted as state land. There is no law to protect it from being developed commercially such as for tourism.

"Anyone with the financial means can get permission from the state to develop it."

The mountain, he added, was also too small to have its status changed to a national park.

"The only thing the local people can do at the moment is to stop any development there to conserve the area."

Many endangered animals in Borneo are threatened by hunting and habitat loss sparked by logging, plantations and development.


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New Frog Species with 'Weird' Croak Identified in New York City

University of Alabama Newswise 14 Mar 12;

In the wilds of New York City — or as wild as you can get so close to skyscrapers — scientists have found a new leopard frog species that for years biologists mistook for a more widespread variety of leopard frog.

This leopard frog that lives in and around New York City is now being called a new species, soon to be named. Photo: Brian Curry, Rutgers

While biologists regularly discover new species in remote rain forests, finding this one in the ponds and marshes of Staten Island, mainland New York and New Jersey — sometimes within view of the Statue of Liberty — is a big surprise, said the scientists from UCLA, Rutgers University, UC Davis, and The University of Alabama who worked together to make the unexpected discovery.

"For a new species to go unrecognized for all this time in this area is amazing," said UCLA Professor Brad Shaffer, from UCLA’s Institute of the Environment and Sustainability and UCLA’s Department of Ecology and Evolutionary Biology. Shaffer is one of the authors on the paper announcing the discovery.

"Many amphibians are secretive and can be very hard to find, but these frogs are pretty obvious, out-there animals," said Shaffer, who is also the director of the UCLA La Kretz Center for California Conservation Science. "This shows that even in the largest city in the U.S. there are still new and important species waiting to be discovered that could be lost without conservation."

In newly released research available online in the journal "Molecular Phylogenetics and Evolution," scientists used DNA data to compare the new frog to all other leopard frog species in the region and determined that it is an entirely new species, soon to be named by the researchers. The unnamed frog joins a crowd of more than a dozen distinct leopard frog species. The newly identified wetland species likely once lived on Manhattan, and though it’s now only known to live in a few nearby locations, Yankee Stadium in the Bronx would be the bull’s-eye of a target drawn around its current range.

Lead author and evolutionary biologist Cathy Newman was completing her master’s at The University of Alabama while working with Leslie Rissler, associate professor of biological sciences at Alabama, on an unrelated study of the southern leopard frog species when Newman first contacted doctoral candidate and co-author Jeremy Feinberg at Rutgers in New Jersey. Newman asked for help on her project, and in return, Feinberg, an ecologist, asked the geneticists if they could help him investigate some "unusual frogs" whose weird-sounding calls were different from other leopard frogs. 

"There were northern and southern leopard frogs species in that general area, so I was expecting to find one of those that for some reason had atypical behaviors or that were hybrids of both," Newman added. "I was really surprised and excited once I started getting data back strongly suggesting it was a new species. It’s fascinating in such a heavily urbanized area."

Feinberg, on the other hand, who is also a regional expert on amphibians and reptiles and a guest researcher at Brookhaven National Laboratory, suspected that the leopard-frog lookalike with the peculiar croak was a new creature hiding in plain sight. Instead of the "long snore" or "rapid chuckle" he heard from other leopard frogs, this frog had a short, repetitive croak. As far back as the late 1800s, scientists have speculated about the "odd" frogs, but until the advent of molecular genetics, it was difficult to prove anything, he said.

"When I first heard these frogs calling, it was so different, I knew something was very off," Feinberg said. "It’s what we call a cryptic species: one species hidden within another because we can’t tell them apart on sight. Thanks to molecular genetics, people are really picking out species more and more that would otherwise be ignored."

The bulk of Newman’s work took place at UC Davis, where UCLA’s Shaffer previously worked. When he found out about Newman’s project, Shaffer was immediately taken with it and encouraged her to pursue it. He offered guidance during Newman’s preliminary analysis of the frog’s mitochondrial DNA, taken from the samples Feinberg and other regional biologists sent of the northern, southern and "weird" frogs. The results were clear-cut: the DNA was distinct, no matter how much the frogs looked alike.

"If I had one of those three leopard frogs in my hands, unless I knew what area it was from, I wouldn’t know which kind I was holding because they all look so similar," Newman said. "But all of our results showed this one lineage is very clearly genetically distinct."

Mitochondrial DNA represents only a fraction of the amphibian’s total DNA though, so Newman knew she needed to do broader nuclear DNA tests to see the whole picture and confirm she had a new species. Shaffer helped her develop strategies for collecting data to compare the new frog to closely related leopard frog species. They shared the data in teleconferencing meetings with Feinberg; Feinberg’s adviser, ecology Professor Joanna Burger at Rutgers; and Rissler, Newman’s master’s adviser at Alabama. Together, the five researchers authored the paper announcing the new species.

"I remember in our lab meetings we were all so excited," Shaffer recalled. "We were trying to be good scientists and not jump to conclusions, but we’re looking at the data going, ‘It’s got to be a new species.’ You feel like you’ve uncovered something unique about the world that’s never been known before."

Habitat destruction, disease, invasive species, pesticides and parasites have all taken a heavy toll on frogs and other amphibians world-wide, said Rissler, program director in the National Science Foundation’s division of environmental biology while on sabbatical from Alabama. Even if you don’t particularly care about amphibians, she said, they are great indicators of problems in our own environment — problems that could potentially impact our own health.

"They are a good model to examine environmental threats or degradation because part of their life history is spent in the water and part spent on land," Rissler said. "They are subject to all of the problems that happen to both of these environments."   

The findings show that even in densely-populated, well-studied areas, there are still new discoveries to be made, said Shaffer, the conservation ecologist. The newly identified frogs appear to have a startlingly limited range, and as the director of UCLA’s La Kretz Center for California Conservation Science, Shaffer sees an immediate link to conservation.

"One of the real mantras of conservation biology is that you cannot protect what you don’t recognize," Shaffer said. "If you don’t know two species are different, you can’t know whether either needs protection."

The newly identified frogs have so far been found in scattered populations in northern New Jersey, southeastern mainland New York, and on Staten Island. Although they may even extend into parts of Connecticut and extreme northeastern Pennsylvania, evidence suggests they were once common on Long Island and other nearby regions but went extinct there in just the last few decades, Feinberg and Burger said.

"The extensive extinctions over the last few decades raise added conservation concerns that must be addressed," Burger said, adding "It is amazing to discover a new frog in Rutgers backyard and the metropolitan area of New York and New Jersey."

"This frog was probably once more widely distributed," Rissler agreed. "They are still able to hang on. They are still here, and that is amazing."

Until the scientists settle on a new name, they refer to the frog as "Rana sp. nov.," meaning "new frog species" — though more often they’re apt to call it "the weird Rana," one researcher confessed.

The paper, "A new species of leopard frog (Anura: Ranidae) from the urban northeastern US," can be found online in the journal "Molecular Phylogenetics and Evolution" at Science Direct, at www.sciencedirect.com/science/article/pii/S1055790312000383.

New Frog Discovered in NYC: Freshwater Species of the Week
Brian Clark Howard National Geographic News 16 Mar 12;

Although the discovery of a previously unknown species is never routine, it is at least more expected in remote corners of the globe, from the deep Amazon to Pacific atolls. But few people expect to find a new species in New York City! (Except perhaps a mutated cockroach or sewer rat.)

But scientists from UCLA, Rutgers University, UC Davis, and the University of Alabama have just announced the discovery of a new species of frog in the journal Molecular Phylogenetics and Evolution. Scientists have not yet named the amphibian, so they are currently calling it ”Rana sp. nov.,” meaning “new frog species,” although they sometimes call it “the weird Rana,” one researcher admitted.

Observers have noted for some time that certain leopard frogs in the New York and New Jersey area have different-sounding calls to their kin, although it wasn’t until recently that scientists used DNA analysis to confirm that the animals are genetically distinct from the dozen or so other species of leopard frogs.

This newly identified wetland species likely lived on Manhattan, before it was largely drained and paved over, as well as other low spots throughout the five boroughs and beyond.

Today the new species hangs on in part of Staten Island (officially part of NYC). The scientists noted that the center of its current known range is actually near Yankee Stadium in the Bronx.

“For a new species to go unrecognized for all this time in this area is amazing,” said UCLA Professor Brad Shaffer in a statement. Shaffer is one of the authors of the new paper.

The discovery of a new species of frog in the country’s largest city is a good reminder that scientists have much more work to do to better understand the natural world. It is also a reminder of how important it is to protect the world’s remaining wetlands. In the case of the U.S., more than 90% of our original wetland cover is gone, thanks largely to development.

What other species remain in the patchwork of existing wetlands, and what can they teach us?

Brian Clark Howard is a writer and editor with NationalGeographic.com. He was formerly an editor at The Daily Green and E/The Environmental Magazine and has contributed to many publications, including TheAtlantic.com, FastCompany.com, MailOnline.com, PopularMechanics.com, Yahoo!, MSN and elsewhere. His latest book, with Kevin Shea, is Build Your Own Small Wind Power System.


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World's smallest frog discovered

Richard Black BBC News 11 Jan 12;

A frog species that appears to be the world's smallest has been discovered in Papua New Guinea by a US-based team.

At 7mm (0.27 inches) long, Paedophryne amauensis may be the world's smallest vertebrate - the group that includes mammals, fish, birds and amphibians.

The researchers also found a slightly larger relative, Paedophryne swiftorum.

Presenting the new species in PLoS One journal, they suggest the frogs' tiny scale is linked to their habitat, in leaf litter on the forest floor.

Finding the frogs was not an easy assignment.

They are well camouflaged among leaves on the forest floor, and have evolved calls resembling those of insects, making them hard to spot.

"The New Guinea forests are incredibly loud at night; and we were trying to record frog calls in the forest, and we were curious as to what these other sounds were," said research leader Chris Austin from Louisiana State University in Baton Rouge, US.

"So we triangulated to where these calls were coming from, and looked through the leaf litter.

"It was night, these things are incredibly small; so what we did after several frustrating attempts was to grab a whole handful of leaf litter and throw it inside a clear plastic bag.

"When we did so, we saw these incredibly tiny frogs hopping around," he told BBC News.
Littering the leaves

The Paedophryne genus was identified only recently, and consists of a number of tiny species found at various points in the eastern forests of Papua New Guinea.

"They're occupying the relatively thick leaf litter of tropical forest in low-lying parts of the island, eating incredibly small insects that typically are much smaller than insects that frogs eat," said Professor Austin.

"And they're probably prey for a large number of relatively small invertebrates that don't usually prey on frogs."

Predators may well include scorpions.

Intriguingly, other places in the world that also feature dense, moist leaf litter tend to possess such small frog species, indicating that amphibians are well placed to occupy this ecological niche.

Before the Paedophrynes were found, the title of "world's smallest frog" was bestowed on the Brazilian gold frog (Brachycephalus didactylus) and its slightly larger Cuban relative, the Monte Iberia Eleuth (Eleutherodactylus iberia). They both measure less than 1cm long.

The smallest vertebrates have until now been fish.

Adult Paedocypris progenetica, which dwells in Indonesian swamps and streams, measure 7.9-10.3 mm long.

Male anglerfish of the species Photocorynus spiniceps are just over 6mm long. But they spend their lives fused to the much larger (50mm long) females, so whether they should count in this contest would be disputed.

Paedophryne amaunensis adults average 7.7mm, which is why its discoverers believe it how holds the crown.

The remote expanses of Papua New Guinea rank alongside those of Madagascar as places where hitherto undiscovered amphibian species are expected to turn up, as they are largely undeveloped and not well explored.

Tiny frog claimed as world's smallest vertebrate
Janet McConnaughey Associated Press Yahoo News 11 Jan 12;

NEW ORLEANS (AP) — A frog that can perch on the tip of your pinkie with room to spare has been claimed as the world's smallest vertebrate species, out-tinying a fish that got the title in 2006. But the discoverer of another weensy fish disputes the claim.

A tempest in a thimble, some might say.

An article Wednesday in the journal PLoS One named Paedophryne amauensis as the world's smallest animal with a spine.

The adult frogs are about three-tenths of an inch long, and a millimeter or so smaller than a carp found on the Indonesian island of Sumatra. The frogs are so small that Louisiana State University herpetologist and environmental biologist Christopher Austin had to enlarge close-up photos to describe them.

But the males of a species of deep-sea anglerfish are about 2 mm smaller, said University of Washington ichthyologist Theodore Pietsch, who described them in 2006. The males don't have stomachs and live as parasites on 1.8-inch (4.57-centimeter)-long females.

Austin discovered the tiny frogs — along with another small frog species — in August 2009 while on a trip to Papua New Guinea to study the extreme diversity of the island's wildlife. He said he knew about the anglerfish but felt that average species size made more sense for comparison.

Steven J. Beaupre, a University of Arkansas scientist and president-elect of the American Society of Ichthyologists and Herpetologists, said many vertebrates have males and females of very different sizes, "so it is reasonable that the world's smallest vertebrate may end up being either the males or the females of some specific fish or amphibian species."

He said he doesn't pay attention to "tiniest" reports, but the frogs themselves are a significant discovery.

"The discovery of two new frog species comes as great news against the background of more prevalent accounts of tropical amphibian extinction," he wrote in an email.

Knowing about such tiny creatures and their ecology, he said, helps scientists "better understand the advantages and disadvantages of extreme small size and how such extremes evolve. Fundamentally, these tiny vertebrates provide a window on the principles that constrain animal design."

Austin said that since these frogs hatch out as hoppers rather than tadpoles and live on the ground, their existence contradicts the hypothesis that evolution at large and small extremes is linked to life in water.

At least 29 species of minuscule frogs in equatorial regions worldwide live in leaf litter or moss that is moist year-round and eat even tinier invertebrates, creating a previously unknown "ecological guild" of similar animals with similar life habits, he said.

"We realized these frogs were probably doing something incredibly different from what normal frogs do — invading this open niche of wet leaf litter that is full of really tiny insects that other frogs and possibly other creatures weren't eating," Austin said.

In August 2009, Austin and graduate student Eric Rittmeyer were collecting and recording the mating calls of frogs at night in a tropical forest near the village of Amau in eastern Papua New Guinea, when they heard a chorus of high-pitched "tinks."

"This frog has a call that doesn't sound like a frog at all. It sounds like an insect," he said. The calls seemed to surround them, and it took a while to be sure they were coming from the ground.

Since they couldn't locate the noise-maker, they snatched up some habitat, expecting to find a six-legger in it.

"We found it by grabbing a whole handful of leaf litter and putting it into a clear plastic bag and very, very slowly going through that litter leaf by leaf by leaf until we saw that small frog hop off one of those leaves," he said.

Getting photos took some effort — the frogs can leap 30 times their own length. After hopping around for a bit, they settled down long enough for a close-up or two, Austin said.

Their expedition, sponsored by the National Science Foundation, later turned up another new species of tiny frog, found farther west along the island's coast. The other is closely related, but a millimeter or so larger, and it had a different call.

Austin estimated that they found 20 previously unknown species in New Guinea, which is such a hotspot of diversity that scientists figure they've described only about six-tenths of all the species living there.

Maurice Kottelat, a Swiss scientist who found the tiny carp called Paedocypris progenetica, wrote in an email that it's hard to compare frogs and fish, because they're measured differently: frogs from nose-tip to the excretory vent, and fish from nose to tail.

"It is not so interesting to know which is really the smallest. Tomorrow will bring another smallest anyway," he wrote.

He concluded a long email, "I have a great concern. It is not when will we discover the next smallest, but whether habitats where to discover them will still be there. Or how long will the habitats survive.

"Since the discovery of Paedocypris most of the fragile peat swamps that it inhabits have been destroyed."

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Online:

AP interactive - http://hosted.ap.org/interactives/2012/tiny-frog/


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World's smallest frogs discovered in New Guinea

Pensoft Publishers EurekAlert 12 Dec 11;


Paedophryne dekot (A) and (B), and P. verrucosa (C), and (D). Credit: Photos by Fred Kraus

Field work by researcher Fred Kraus from Bishop Museum, Honolulu has found the world's smallest frogs in southeastern New Guinea. This also makes them the world's smallest tetrapods (non-fish vertebrates). The frogs belong to the genus Paedophryne, all of whose species are extremely small, with adults of the two new species - named Paedophryne dekot and Paedophryne verrucosa - only 8-9 mm in length. The study was published in the open access journal ZooKeys.

Previous research had led to the discovery of Paedophryne by Kraus in 2002 from nearby areas in New Guinea, but the genus was not formally described until last year (Kraus 2010, also in Zookeys). The two species described earlier were larger, attaining sizes of 10-11 mm, but the genus still represents the most miniaturized group of tetrapods in the world.

"Miniaturization occurs in many frog genera around the world," said the author, "but New Guinea seems particularly well represented, with species in seven genera exhibiting the phenomenon. Although most frog genera have only a few diminutive representatives mixed among larger relatives, Paedophryne is unique in that all species are minute." The four known species all inhabit small ranges in the mountains of southeastern New Guinea or adjacent, offshore islands. Their closest relatives remain unclear.

The members of this genus have reduced digit sizes that would not allow them to climb well; all inhabit leaf litter, and their reduced digits may be a corollary of a reduced body size required for inhabiting leaf litter and moss. Habitation in leaf litter and moss is common in miniaturized frogs and may reflect their exploitation of novel food sources in that habitat. The frogs' small body sizes have also reduced the egg complements that females carry to only two, although it is not yet known whether both eggs are laid simultaneously or at staged intervals.

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Original source: Kraus F (2011) At the lower size limit for tetrapods, two new species of the miniaturized frog genus Paedophryne (Anura, Microhylidae). ZooKeys 154: 71-88. doi: 10.3897/zookeys.154.1963

References: Kraus, F. (2010) New genus of diminutive microhylid frogs from Papua New Guinea. ZooKeys 48 (2010) : 39-59. doi: 10.3897/zookeys.48.446


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Killer frog fungus 'spread by trade'

Richard Black BBC News 8 Nov 11;

The fungus killing frogs around the world comes in several forms, and has almost certainly been distributed by trade in amphibians, research shows.

Scientists led from Imperial College London found three distinct lineages of the chytrid fungus in various nations.

The most widespread and lethal form was probably created by a crossing of two prior forms, they report in Proceedings of the National Academy of Sciences.

Chytrid is now found on every continent and has wiped out a number of species.

Identified just over a decade ago, it kills amphibians by blocking the transfer of vital substances through their skins, eventually causing cardiac arrest.

Its origins are believed to lie in southern Africa.

"Before this study, no-one knew there were any different lineages," said Rhys Farrer, the project leader from Imperial.

"This work comes from using the new whole-genome sequencing technique, combining data from all over the world.

"And it's obviously important, as chytrid is one one of the most devastating wildlife diseases with the largest host range of any, and responsible for dozens of species extinctions and many more extirpations of local populations."
Cape of good hope

The team took samples from amphibians in 20 sites spanning Europe, North America, Central America, the Caribbean and South Africa.

The majority carried Batrachochytrium dendrobatidis (Bd) fungus of the type that has a truly global spread, which they dubbed BdGPL.

But their Swiss sample showed a different form, or clade, named BdCH, while a third clade (named BdCAPE) turned up in the Cape Province of South Africa and the Mediterranean island of Mallorca.

The Mallorcan chytrid was almost certainly carried from South Africa, probably via the trade in amphibians for zoos or private collections.

The Swiss form probably came via a similar route, researchers believe.

Laboratory tests showed that BdCAPE was substantially less damaging to amphibians than BdGPL. (The Swiss form was identified too late in the project to be tested in this way.)

The genetic differences that make BdGPL more lethal have not been identified. But the team believes it became so deadly through a chance encounter between two or more prior strains.

"We think we are seeing unique evidence of recombination within BdGPL - we can't say for sure if it's a hybridisation event but it's the most likely explanation," said Mr Farrer.

"From the dating work we've done it's safe to say that it arose in the 20th Century, and that's in the realm of time for the trade in amphibians."

Although the transport of exotic amphibians for pets is a prime suspect, another theory holds that the lethal BdGPL chytrid spread through the importation of frogs from Africa to North America and Europe for use in pregnancy testing.

However, yet another form of the fungus was recently discovered in Japan, its relationship to African-derived lineages uncertain.

The latest research marks a new staging post on a fast and fascinating voyage of scientific discovery.

Whether it can help combat the disease is another matter.

Analysing the genomes of the various strains may show scientists what makes some virulent and others relatively benign.

The Imperial team believes it is also worth investigating whether the less virulent forms can be used to give amphibians a degree of resistance, in the same way that some vaccines do through using attenuated forms of disease-causing microbes.


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Malaysia: Leap in demand for frog meat

Abby Lu The Star 24 Oct 11;

Frog farming is a risky business but the rewards are there for those who persevere.

IT WAS the strangest place to hear the wail of a cat in heat: a former pig farm with still-intact concrete pens containing hundreds upon hundreds of hopping frogs. And these are bullfrogs, to be precise. As its name suggests, they croak like a bull, not meow like a cat.

Just what is going on?

The owner of the 1,018sqm bullfrog farm, who wants to be known as just Pang, grins knowingly. “That is the call of a sick frog – it is crying out in pain,” he says. Amazingly, of the dozens of pens filled with thousands of four-legged amphibians, Pang was able to single out the frog that was causing the ruckus.

His knowledge is understandable. Pang has been farming frogs for more than 10 years in Sepang, Selangor, following the Nipah virus outbreak in 1999. Like other pig farmers in the affected areas, Pang saw his entire livestock – and livelihood – being destroyed in a single stroke. Subsequently, the decree that there was to be no more pig farming within an 8km radius of the affected areas was made. Pang had no choice but to look for a viable alternative.

Dr C.K. Lim, a resident of nearby Sungai Pelek, says that many pig farmers, unsure of what to do with their land and existing infrastructure, ventured into new entreprises. “Some converted the (pig) pens into tanks to rear freshwater fishes, while others tried crab farming. Most of them failed,” says Lim.

A veterinarian by training, Lim was spurred to do some research on his own. “I felt for the farmers who have lost their livelihood and looked into the things they could do to replace the loss of income,” says Lim.

He found that bullfrog farming was a viable alternative and introduced it to a number of pig farmers – and that was how an agricultural disaster became a catalyst for the bullfrog farming industry in Malaysia.

However, frog farming is nothing new. “People have been trying to farm them since the 1950s but met with little success,” reveals Lim. “Frogs live in the wild. They don’t survive or breed well in captivity. They have to be fed live insects and fresh cockles; sometimes it is necessary to agitate the water to make them believe the cockles are alive!” he recalls.

It was only after years of selective breeding that the American bullfrogs reared by the Taiwanese started accepting pellets as food. This makes the American bullfrog the amphibian of choice at many frog farms, not only in Malaysia, but in China, Brazil and Thailand.

Back in the 1970s when Lim was a student at the University of Nottingham in England, a pair of breeders sold for 500 Malaysian dollars then. Now the market price is cheaper at RM11 per kg.

“Most people will start off with, say, 10 male and 50 female frogs,” says Lim.

A breeder is a frog that weighs between 300g and 500g. In Malaysia, it takes four to seven months for bullfrogs to reach that size. In Taiwan, it may take up to 14 months as they hibernate during winter. “This makes our weather very conducive for frog rearing,” says Lim.

Nevertheless, frog farming is hard work and many bullfrog farms have since ceased operations. For starters, even species which have been identified as relatively domestic take time to settle in. Lim describes frogs as “extremely nervous creatures” – they are frightened easily.

At Pang’s farm, for example, several scarecrows hang atop the frog enclosures to scare away kingfishers that may swoop in for a quick snack or two. However, Pang says that being eaten by the bird is not too bad – at maximum, they eat a couple. “More deaths will come from them crushing each other!” he exclaims.

When frightened, the frogs will hop on top of one another, forming a little amphibian hill. The ones at the bottom of the pile are crushed or suffocated, while others become sick from the stress.

Pang, who earns about RM3,000 a month, was once hit by a six-month lull during which he had nothing to sell.

These massive losses have made frog farmers extremely superstitious and wary. When contacted, many of them refused a visit. A supplier who wishes to be known as Ah Keong says that these frogs “cannot stand the sight of people” and that outsiders may be carriers of unwanted diseases.

It wasn’t always that way. Thomas Koh from Johor, for example, started out on a positive note. In 1999, Koh headed over to Taiwan to learn the ropes of the trade. He subsequently built a frog farm with 200 concrete ponds stretching over a hectare. Ten years ago, those ponds cost about RM1,000 each.

However, after being in the business for six years, he decided to call it a day even though he says the market is not bad. “Singapore alone requires about 200 tonnes per month,” Koh says. Still, the frequent outbreak of diseases became too much to bear.

“American bullfrogs thrive in temperatures below 30°C. Our weather can get too hot sometimes and because they live in the water, diseases spread very quickly,” he says.

Similar problems have been observed in many South-East Asian countries. In Indonesia, commercial farming of native frogs has failed. Bullfrog farming, which was initially encouraged by the Government in 1982, has seen little success.

The Chinese, Thais and Vietnamese are not the only ones who love frog meat. Greek and Roman culinary traditions have long considered frogs a delicacy.

In several Latin American, Asian and African countries, frogs are considered an important source of protein.

The French, who consider themselves purveyors of haute cuisine, have long held frogs’ legs (cuisses de grenouilles) in high esteem and have been heartily tucking in, for at least 1,000 years.

So much so that by the late 1970s, frog numbers became so dangerously low that the authorities took measures to shore up the population. In 1980, commercial frog harvesting was banned. According to an article in The Guardian by Jon Henley, poachers can be fined up to ‚10,000 (RM42,000) and have their vehicles and equipment confiscated.

However, this lack of local supply does not mean that frog legs have leapt off the menu. Every year, an estimated 4,000 tonnes of frog legs still find their way to the dining table, thanks to imports from Asia. This makes France one of the largest markets for frog legs.

High demands from other European Union countries such as Belgium, Italy and the Netherlands, have made the EU the largest importer of frog legs in the world.

According to Canapés To Extinction: The International Trade In Frogs’ Legs And Its Ecological Impact, a report commissioned by three wildlife conservation bodies, the EU imported a total of 46,400 tonnes of frog legs, mainly from Asia, between 2000 and 2009. This number may represent about 928 million to 2.3 billion frogs.

Close on the heels of the EU comes America. In the last decade, the United States imported a total of 43,137 tonnes of frogs and frog parts.

Frogs are popular amongst people living in the former French colony of Louisiana as well as the southern states of Texas and Arkansas. Members of the Asian-American communities love it, too. Even US President Barack Obama has been photographed munching on frog legs.

Like France, the frog population in the United States has been depleted; demand is met by sourcing from other countries.

Ironically, it is a homecoming of sorts because the bulk of the frogs that they buy comprises the American bullfrog. Most of these frogs come from the top exporting countries of Indonesia, Vietnam, Taiwan and China.

In Malaysia, several sources put our local production at 40 to 80 tonnes a month.

Almost all the frogs that are produced locally are absorbed by the local market and a small amount is exported to Singapore.

Apart from that, there are also indications that there is a shortage in the local market. For example, farmers are no longer required to sell their frogs according to grades.

“There used to be Grade A and B frogs, but due to the shortage, this grading is no longer observed,” adds Pang.

Frog population under threat
The Star 24 Oct 11;

IT MAY not be immediately clear but frogs play a vital role in our ecosystem as predator and prey.

As tadpoles, they are food for larger animals and filter feeders that consume bacteria and algae in a particular aquatic system. As frogs, they consume agricultural pests and mosquitoes, some of which carry deadly diseases.

Many countries that report a declining frog population are also reporting a corresponding increase in use of pesticides. This is disturbing because excessive use of pesticides is known to be harmful to people and the environment.

It is about time these creatures are given due attention. Amphibians – animals that live partly on land and in water – are the most threatened animal group. One-third of all amphibian species are now listed as threatened.

Besides the threats posed by environmental and climate changes, the global demand for frog meat is endangering the survival of the species.

At first glance, farming may seem to be the solution to a rapidly declining frog population. After all, it makes sense – more frogs from farms means less pressure on those in the wild, right?

Not true, says a 2009 paper published in Frontiers In Ecology And The Environment. Biologist Brian Gratwicke and his colleagues stress that farming is not an ecologically responsible option.

Firstly, farmed frogs have the potential to spread deadly diseases such as the chytridiomycosis fungus – the cause of numerous population die-offs – ranaviruses and Salmonella bacteria to other farmed stocks and wild populations.

The farming of non-native frogs can also cause serious problems if those species are released or escape and become invasive. The popular American bullfrog, for example, is on the list of “100 of the world’s worst invasive alien species”.

Cruelty towards frogs
The Star 24 Oct 11;

MANY people do not know much about frogs. They’re not as awe-inspiring as the majestic lion, or cute and cuddly like the koala bear.

And while birds sing, frogs croak. No wonder these slimy creatures are not on our radar.

While livestock may be accorded some care when they are being raised, transported or slaughtered, frogs are not so fortunate. Kept in small cages without water or food, frogs often meet an excruciating death. Frogs sold at the market and pasar malam are often skinned and cut open alive. Who can forget the sight of these miserable creatures wriggling and twitching in pain as their guts spill out?

Cruelty towards frogs is not only documented in Malaysia but in a lot of countries where they end up on the dinner plate.

In India, live frogs are dismembered by hand or have their legs snipped off by a pair of scissors.

Frogs that are captured from the wild also experience trauma. Although a variety of tools are used, the three-pronged spear is favoured and it sometimes causes such severe bruising that the animal is rejected by the buyer.

This is troubling because scientific studies show that frogs possess the appropriate neurological components for transmitting pain and demonstrate behavioural and physiological reactions to pain. This means that a frog’s ability to feel pain is probably similar to that of a mammal.


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