| | Other topics
News articles on amphibian crisis
Mongabay.com news articles on amphibian crisis in blog format. Updated regularly.
(04/11/2014) Madagascar is one of the world’s hotspots for amphibian diversity, home to so many frog species that many of them don’t even have names. But soon the island may also harbor a fungus causing drastic declines – even extinctions – of frogs around the world. Ironically, the wildlife trade that’s often blamed for helping spread the disease may also give scientists a chance to prevent it.
The incredible shrinking salamander: researchers find another casualty of climate change
(04/04/2014) Climate change is contributing to a slew of global problems, from rising seas to desertification. Now, researchers have added another repercussion: shrinking salamanders. Many amphibian populations around the world are currently experiencing precipitous declines, estimated to be at least 211 times normal extinction rates. Scientists believe these declines are due to a multitude of factors such as habitat loss, agricultural contamination, and the accidental introduction of a killer fungus, among others.
Strange mouth-brooding frog driven to extinction by disease
(11/21/2013) An unusual species of mouth-brooding frog was likely driven to extinction by the fungus Batrachochytrium dendrobatidis (Bd), making an unusual example of 'extinction by infection', argue scientists writing in the open-access journal PLOS ONE. Rhinoderma rufum has not been seen in the wild since 1980.
Thought-to-be-extinct 'halloween' frog rediscovered in Costa Rica
(11/04/2013) A breeding population of a critically endangered harlequin toad thought to be extinct in Costa Rica has been discovered in a tract of highland forest in the Central American country, reports a paper published in Amphibia-Reptilia. Atelopus varius, an orange-and-black harlequin toad, was once relatively common from central Costa Rica to western Panama. But beginning in the 1980's the species experienced a rapid population collapse across most of its range.
Small invertebrates could be key to uncovering the mysteries of killer amphibian fungus
(10/22/2013) In 2004, the first-ever Global Amphibian Assessment (GAA) reviewed all 5,743 amphibian species known to science and concluded that 32% were threatened with extinction - a number far exceeding corresponding figures for birds and mammals (12 to 23% respectively). In addition to the usual culprits of climate change and habitat destruction, a startling 92.5% of amphibians listed as Critically Endangered were found to be undergoing enigmatic declines linked to an unexpected perpetrator - the chytrid fungus, Batrachochytrium dendrobatidis (Bd).
Amphibians evolve resistance to popular pesticide
(10/04/2013) Rachel Carson and, more recently, Sandra Steingraber have successfully drawn popular attention to the risks of pesticides on wildlife. Many of the environmental consequences of pesticides have now been well documented by scientists; however, studies investigating the evolutionary consequences of pesticides on non-target species are largely missing. Not surprisingly, most studies looking at how species evolve in response to pesticide-use have been on target species such as mosquitoes and crop pests, which show that some target species have evolved resistance to common pesticides.
Newly discovered chytrid fungus devastates salamander populations
(09/19/2013) A frightening disease has been ravaging amphibians across the planet. At least 350 species have been infected, two hundred of which have suffered massive population reductions or extinctions, some even occurring within the space of weeks. In 1999, a single fungal species called Batrachochytrium dendrobatidis (Bd), commonly known as the chytrid fungus, was identified as the causative agent for these rapid die-offs.
Vocal-sac breeding frog possibly extinct
(07/02/2013) Somewhere in the wet pine forests of Chile, a male frog is gulping-up a bunch of eggs. No he's not eating them, he's just being a good dad. Darwin's frogs are known for their unique parenting-style: tadpoles are incubated in the vocal sac of the father. First recorded by Charles Darwin during his world famous voyage aboard the Beagle, the amphibians were common in the native Chilean pine forests until the last few decades. Now, scientists believe that one of the two species, the northern Darwin's frog (Rhinoderma rufum), may have vanished for good. And the other is hanging on by a thread.
Amazonian students help monitor threatened frog populations
(07/01/2013) According to the International Union for Conservation of Nature, amphibians are the most threatened group of animals on Earth: currently around 30 percent of the world's amphibians are listed as threatened with extinction. However this percentage doesn't include those species about which too little is known to evaluate (26 percent). Amphibians face many threats but two of the largest are habitat loss and the lethal chytrid fungus, which has rapidly spread worldwide and is likely responsible for numerous extinctions. But conservationists are coming up with innovative and creative ways to keep amphibians from disappearing, including a program from the Detroit Zoological Society (DZS) that is working with students in the Peruvian Amazon to monitor frog populations.
Turning up the temperature might save frogs' lives
(05/28/2013) Over the past 30 years, amphibians worldwide have been infected with a lethal skin disease known as the amphibian chytrid fungus (Batrachochytrium dendrobatidis). "The disease can cause rapid mortality, with infected frogs of susceptible species dying within weeks of infection in the laboratory." Jodi Rowley, a herpetologist with the Australian Museum told mongabay.com. "This disease has now been associated with declines and extinctions in hundreds of species of amphibians worldwide, and is a serious threat to global amphibian biodiversity."
Scientists discover 8 new frogs in one sanctuary, nearly all Critically Endangered (photos)
(03/21/2013) Two surveys in the mountainous forests of Sri Lanka's Peak Wilderness Sanctuary have uncovered eight new species of frogs, according to a massive new paper in the Journal of Threatened Taxa. While every year over a hundred new amphibians are discovered, eight new discoveries in a single park is especially notable. Sri Lanka is an amphibian-lovers paradise with well over 100 described species, most of which are endemic, i.e. found only on the small island country. Unfortunately the country has also seen more frog extinctions than anywhere else, and seven of the eight new species are already thought to be Critically Endangered.
Captive frogs may be spreading diseases to wild cousins across Southeast Asia
(03/07/2013) 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.
Two new species of mini-salamander discovered in Colombia
(02/28/2013) Biologists have discovered two new species of salamander in Tamá National Natural Park in Colombia. While the discovery should be cause for celebration, the news was dampened by the fact that both species are already infected with the deadly fungal disease, known as Batrachochytrium dendrobatidis (Bd), which has wiped out amphibian populations worldwide. Both of the new salamanders belong to the genus Bolitoglossa, which are web-footed salamanders found in the tropical Americas.
Popular pesticides kill frogs outright
(01/28/2013) Commonly used agrochemicals (pesticides, fungicides and herbicides) kill frogs outright when sprayed on fields even when used at recommended dosages, according to new research in Scientific Reports. Testing seven chemicals on European common frogs (Rana temporaria), the scientists found that all of them were potentially lethal to amphibians. In fact, two fungicides—Headline and Captain Omya—wiped out the entire population of frogs at the recommended dosage. The study warns that agricultural chemicals could be having a large-scale and largely unrecorded impact on the world's vanishing amphibians.
Common toads ravaged by killer disease in Portugal
(01/14/2013) The chytrid fungus—responsible for millions of amphibian deaths worldwide—is now believed to be behind a sudden decline in the common midwife toad (Alytes obstetricans), according to a new paper in Animal Conservation. Researchers have detected the presence of the deadly fungus in the Serra da Estrela, north-central Portugal, home to a population of the midwife toad.
Meet Cape Town's volunteer 'toad shepherds'
(11/08/2012) August marks the last month of winter in South Africa, and, as temperatures begin to rise, activists in Cape Town prepare for a truly unique conservation event. Every year at this time western leopard toads (Amietophrynus pantherinus) endemic to the region and Critically Endangered, embark on a night-time migration through Cape Town from their homes in the city's gardens to the ponds they use as breeding sites—as far as three kilometers away. This season over one hundred volunteers took to the streets, flashlights in hand, to assist the toads in navigating the increasing number of man-made obstacles in their path. Among them was life-long resident and mother, Hanniki Pieterse, who serves as an organizer for volunteers in her area.
Artificial 'misting system' allows vanished toad to be released back into the wild
(11/01/2012) In 1996 scientists discovered a new species of dwarf toad: the Kihansi spray toad (Nectophrynoides asperginis). Although surviving on only two hectares near the Kihansi Gorge in Tanzania, the toads proved populous: around 17,000 individuals crowded the smallest known habitat of any vertebrate, living happily off the moist micro-habitat created by spray from adjacent waterfalls. Eight years later and the Kihansi spray toad was gone. Disease combined with the construction of a hydroelectric dam ended the toads' limited, but fecund, reign.
Climate change may be worsening impacts of killer frog disease
(08/13/2012) Climate change, which is spawning more extreme temperatures variations worldwide, may be worsening the effects of a devastating fungal disease on the world's amphibians, according to new research published in Nature Climate Change. Researchers found that frogs infected with the disease, known as chytridiomycosis, perished more rapidly when temperatures swung wildly. However scientists told the BBC that more research is needed before any definitive link between climate change and chytridiomycosis mortalities could be made.
3000 new species of amphibians discovered in 25 years
(07/31/2012) The number of amphibians described by scientists now exceeds 7,000, or roughly 3,000 more than were known just 25 years ago, report researchers in Berkeley.
New colorful rainforest frog named after Prince Charles (PICTURES)
(07/04/2012) Researchers have discovered a previously unknown species of frog and named it in honor of Price Charles, according to a paper published in the journal Zootaxa.
EPA considers ban on herbicide that triggers sex reversal in frogs
(06/08/2012) The Environmental Protection Agency (EPA) will weigh a ban on Atrazine, a widely used herbicide linked to sex reversal and other reproductive problems in amphibians and fish. The chemical, which is manufactured by Syngenta, has been banned in the European Union since 2004 but some 80 million pounds Atrazine are applied to corn, sugarcane, sorghum and rice in the United States each year.
Celebrate frogs on leap day!
(02/20/2012) The NGO Amphibian Ark is asking frog-lovers to visit their local zoos on up-coming leap day, February 29th. Dubbed, Leaping Ahead of Extinction, the program includes 58 zoos and other amphibian breeding facilities in seventeen countries that have captive breeding populations of endangered amphibians.
Vampire and bird frogs: discovering new amphibians in Southeast Asia's threatened forests
(02/06/2012) In 2009 researchers discovered 19,232 species new to science, most of these were plants and insects, but 148 were amphibians. Even as amphibians face unprecedented challenges—habitat loss, pollution, overharvesting, climate change, and a lethal disease called chytridiomycosis that has pushed a number of species to extinction—new amphibians are still being uncovered at surprising rates. One of the major hotspots for finding new amphibians is the dwindling tropical forests of Southeast Asia.
Frog plague found in India
(01/03/2012) The chytrid fungus, which is responsible for the collapse of numerous amphibian populations as well as the extinction of entire species, has been located for the first time in India, according to a paper in Herpetological Review. Researchers took swabs of frog in the genus Indirana in the Western Ghats and found the killer fungus known as chytridiomycosis.
Photos: two new paper clip-sized frogs discovered in Vietnamese mountains
(12/07/2011) Researchers have discovered two new frog species living in the montane tropical forests of Vietnam. Known as moss frogs, these small amphibians employ camouflage as one way to keep predators at bay, in some cases resembling the moss that gives them their name.
Effort to save world's rarest frogs recognized with conservation award
(12/05/2011) An effort to save the world's most endangered amphibians has won mongabay.com's 2011 conservation award. Amphibian Ark — a joint effort of the World Association of Zoos and Aquariums, the IUCN/SSC Conservation Breeding Specialist Group, and the IUCN/SSC Amphibian Specialist Group — is working to evaluate the status of threatened amphibians, raise awareness about the global amphibian extinction crisis, and set up captive breeding programs. The initiative is targeting 500 species that will not survive without captive breeding efforts.
Smelly frogs may be key to fighting antibiotic-resistant infections
(12/01/2011) Foul smelling frogs may save lives, according to new research in the Journal of Proteome Research. Examining nine species of Chinese frogs, known as "odorous" frogs for their off-putting smell, researchers have discovered an astounding variety of antimicrobial peptides, or put simply bacteria-killers.
Extinct frog rediscovered in Israel
(11/21/2011) After its marshland was drained, researchers thought the Hula painted frog (Discoglossus nigriventer) had vanished for good. However a patrol at the Ha-Hula lake in Israel recently discovered a single female amphibian that turned out to be the long-lost, and long-sought, Hula painted frog.
Museum specimens reveal the tracks of an amphibian epidemic
(11/07/2011) Dead men tell no tales, but dead frogs can speak volumes. Scientists have shown that frogs and salamanders preserved in museums tell the history of a deadly fungus and its spread across Mexico and Central America. The new finding, published recently in the Proceedings of the National Academy of Sciences (PNAS), may help explain past and ongoing amphibian die-offs in the region.
New site is a match-maker for world's endangered frogs
(11/03/2011) A new initiative by the conservation group, Amphibian Ark, hopes to match lonely, vanishing frogs with a prince/princess to to save them. Dubbed FrogMatchMaker.com after online dating sites, the program is working to connect supporters and donors with amphibian conservation programs in need. Currently, amphibians are among the world's most imperiled species with 41 percent threatened with extinction according to the IUCN Red list.
Saving Ghana's vanishing frogs
(11/02/2011) Frogs need all the help they can get. With the IUCN Red List estimating that 41 percent of amphibians are endangered, frogs are currently the world's most imperiled animal family. Scientists estimate that around 200 amphibian species have been lost to extinction in recent decades to habitat loss, pollution, and a devastating fungal disease. Yet as the frog emergency worsens, there have been positive movements in conservation. The most recent comes from the small West African country of Ghana. Partnering with the enthusiastic US-based organization, SAVE THE FROGS!, two Ghanaian herpetologists, Gilbert Baase Adum and Caleb Ofori, have started a sister branch in their country: SAVE THE FROGS! Ghana.
Scientists find frog genes that provide immunity to extinction plague
(09/27/2011) Scientists with Cornell have discovered genetics that may provide immunity to frogs in face of the killer amphibian-disease chytridiomycosis. This plague, which is spreading to amphibian populations worldwide, is responsible for a number of frog species' recent extinction. But now researchers report in a new study in the Proceedings of the National Academy of Sciences (PNAS) that they are one step closer to understanding why some frog populations are able to fend off the disease, while others succumb with lightning-speed. In time, the results may lead to breeding strategies in captivity that could produce immune populations.
Could zooplankton save frogs from deadly epidemic?
(08/26/2011) Scientists have discovered that a species of zooplankton will eat a fungal pathogen that is killing amphibians around the world.
First ever picture of long lost rainbow toad
(07/13/2011) Scientists are elated after the surprise rediscovery of a wildly-colored frog not seen for 87 years and never before photographed—until now. The Bornean rainbow toad, also known as the Sambas Stream toad (Ansonia latidisca) was rediscovered on Borneo in the Malaysian state of Sarawak by local scientists inspired by a 2010 search for the world's missing amphibians by Conservation International (CI). Leading up to its search CI released the World's Top 10 Most Wanted Lost Frogs (out of a hundred being searched for): the Bornean rainbow toad was listed as number 10.
Amphibian-plague strikes frogs harder in pristine ecosystems
(05/31/2011) Frog populations worldwide are facing two apocalypses: habitat destruction and a lethal plague, known as chytridiomycosis. Over 30 percent of the world's amphibians are currently threatened with extinction and it is thought at least 120 species have gone extinct in just the last 30 years. Unfortunately, a new study in Proceedings of the National Academy of Sciences (PNAS) finds that the two threats—habitat loss and chytridiomycosis—are likely to leave no frog population undisturbed. According to the study, frogs that live in still-pristine habitats are more susceptible to chytridiomycosis than those that are already suffering from habitat loss.
Frog pictures for Save the Frogs Day
(04/29/2011) To raise awareness of the plight of amphibians, in 2009 biologist Kerry Kriger declared April 28th "Save the Frogs Day". This year the event focuses on Atrazine, a commonly used pesticide which triggers reproductive problems in frogs and humans. Atrazine is used primarily on corn. In recognition of Save the Frogs Day, here is a collection of frog photos taken Mongabay.com's Rhett Butler.
Scientists scramble to save dying amphibians
(04/28/2011) In forests, ponds, swamps, and other ecosystems around the world, amphibians are dying at rates never before observed. The reasons are many: habitat destruction, pollution from pesticides, climate change, invasive species, and the emergence of a deadly and infectious fungal disease. More than 200 species have gone silent, while scientists estimate one third of the more than 6,500 known species are at risk of extinction. Conservationists have set up an an emergency conservation measure to capture wild frogs from infected areas and safeguard them in captivity until the disease is controlled or at least better understood. The frogs will be bred in captivity as an insurance policy against extinction.
Save the Frogs Day focuses on banning Atrazine in US
(04/26/2011) This year's Save the Frogs Day (Friday, April 29th) is focusing on a campaign to ban the herbicide Atrazine in the US with a rally at the steps of the Environmental Protection Agency (EPA). Kerry Kriger, executive director of frog-focused NGO Save the Frogs! and creator of Save the Frogs Day, says that Atrazine is an important target in the attempt to save amphibians worldwide, which are currently facing extinction rates that are estimated at 200 times the average. "Atrazine weakens amphibians' immune systems, and can cause hermaphroditism and complete sex reversal in male frogs at concentrations as low as 2.5 parts per billion," Kriger told mongabay.com.
Researchers rediscover one of the world's most sought-after lost frogs
(02/17/2011) The Search for Lost Frogs, a global expedition to uncover amphibian species not seen for decades, has uncovered one of the expedition's most sought-after species: the Pescado stubfoot toad (Atelopus balios). The discovery in Ecuador was one bright spot in a search that revealed more about the crisis and extinctions of frogs than it did about the hopefulness of finding cryptic communities. In total the expedition rediscovered 4 of its 100 targeted species.
Worldwide search for 'lost frogs' ends with 4% success, but some surprises
(02/16/2011) Last August, a group of conservation agencies launched the Search for Lost Frogs, which employed 126 researchers to scour 21 countries for 100 amphibian species, some of which have not been seen for decades. After five months, expeditions found 4 amphibians out of the 100 targets, highlighting the likelihood that most of the remaining species are in fact extinct; however the global expedition also uncovered some happy surprises. Amphibians have been devastated over the last few decades; highly sensitive to environmental impacts, species have been hard hit by deforestation, habitat loss, pollution, agricultural chemicals, overexploitation for food, climate change, and a devastating fungal disease, chytridiomycosis. Researchers say that in the past 30 years, its likely 120 amphibians have been lost forever.
The march to extinction accelerates
(10/26/2010) A fifth of the world's vertebrate species (i.e. mammals, birds, reptiles, amphibians, and fish) are threatened with extinction, according to a massive new study by the International Union for the Conservation of Nature (IUCN); and the situation is worsening for the world's wildlife: on average 52 species of mammals, birds, and amphibians move one category closer to extinction every year (the IUCN Red List categorizes species as Least Concern, Near Threatened, Vulnerable, Endangered, Critically Endangered, Extinct in the Wild, and then Extinct). However, the news isn't all bad. The study found that conservation action does work: in the first analysis of its kind, researchers found that the global biodiversity decline would have been 18% worse if not for conservation attention, "nonetheless," the authors—174 scientists from 38 countries—write, "current conservation efforts remain insufficient to offset the main drivers of biodiversity loss." According to the study, these drivers include agricultural expansion, logging, over-exploitation of species, and invasive species.
Frogs and friends at risk from booming global wildlife trade
(09/08/2010) Alejandra Goyenechea, International Counsel at Defenders of Wildlife and Chair of the Species Survival Network's (SSN) Amphibian Working Group, spoke with Laurel Neme on her 'The WildLife' radio show and podcast about the global amphibian trade. In her interview, Alejandra Goyenechea discusses the benefits of frogs and the many threats – such as habitat loss, climate change, pollution, invasive species, disease, and overexploitation – to their survival. Did you know frogs indicate environmental quality, like canaries in a coal mine? Or that many have medicinal properties, like the phantasmal poison dart frog which produces a painkiller 200 times the potency of morphine?
Photos: Asia's tiniest frog discovered living inside carnivorous plants in Borneo
(08/25/2010) One of the world's smallest frogs has been discovered living inside carnivorous plants in Borneo, reports Conservation International, a conservation group that is jointly supporting a campaign with IUCN to search for some of the world's 'lost amphibians.' The species, described in Zootaxa by Indraneil Das and Alexander Haas of the Institute of Biodiversity and Environmental Conservation at the Universiti Malaysia Sarawak and Biozentrum Grindel und Zoologisches Museum of Hamburg, is named Microhyla nepenthicola after the plant in which is was found, Nepenthes ampullaria, a species of pitcher plant from Malaysian Borneo.
Golden toad saved from brink of extinction
(08/17/2010) One hundred Kihansi Spray Toads have been flown to their native Tanzania after a close brush with extinction, reports the Wildlife Conservation Society (WCS).
Photos: world's top ten 'lost frogs'
(08/09/2010) The International Union for the Conservation of Nature (IUCN) and Conservation International (CI) have sent teams of researchers to 14 countries on five continents to search for the world's lost frogs. These are amphibian species that have not been seen for years—in some cases even up to a century—but may still survive in the wild. Amphibians worldwide are currently undergoing an extinction crisis. While amphibians struggle to survive against habitat loss, climate change, pollution, and overexploitation, they are also being wiped out by a fungal disease known as chytridiomycosis.
Scientists hunt for 'lost frogs' around the globe
(08/09/2010) From now through October, teams of scientists will be scouring through leaf litters, in shallow pools, under rocks, and in tree trunks for the world's 'lost frogs'. Searching in 14 countries on five continents, the researchers are looking for some 100 species of frogs that have not been seen in decades and in some cases up to a century. While some of the species may well be extinct, researchers are holding out hope that they can find the ones that are still hanging on, albeit by a thread.
Endangered Animals: 10 Reasons for Hope
(08/03/2010) Earlier last month the Zoological Society of San Diego launched two far reaching media and development projects which showcase the Zoo's extensive global field conservation programs. Mongabay had the opportunity to attend the launch ceremony of the Zoo's new 'Global Action Team' and the accompanying 'Ten Reasons for Hope' campaign. While at this event, we spoke with Alan Lieberman, Director of Regional Conservation Programs, about the development of both projects.
Following public outcry, New Zealand drops plan to mine protected areas
(07/20/2010) The New Zealand government has caved to public pressure, announcing that it is dropping all plans to mine in protected areas. The plan to open 7,000 hectares of protected areas to mining would have threatened a number of rare and endemic species, including two frogs that are prehistoric relics virtually unchanged from amphibian fossils 150 million years old: Archey's frog (Leiopelma archeyi) and Hochstetter's frog (Leiopelma hochstetteri).
30 frog species, including 5 unknown to science, killed off by amphibian plague in Panama
(07/19/2010) With advanced genetic techniques, researchers have drawn a picture of just how devastating the currently extinction crisis for the world's amphibians has become in a new study published in the Proceedings of the Nation Academy of Sciences (PNAS). Studying frog populations using DNA barcoding in Panama's Omar Torrijos National Park located in El Copé researchers found that 25 known species and 5 unknown species have vanished since 1998. None have returned.
Two new frogs discovered in Panama amidst amphibian plague
(06/06/2010) Researchers working to save Panama's frogs from a fatal disease have stumbled on two species unknown to science. In Omar Torrijos National Park they found a bigger version of a common species, which is now known to be a unique species, and near the Colombian border they discovered a new frog that has been named after Spanish for DNA. Both frogs were discovered while researchers searched for frog populations in chytridiomycosis-infected areas. The highly contagious disease chytridiomycosis has devastated frog species worldwide and is believe to be at least in part responsible for some 100 extinctions of amphibians.
World's 'number one frog' faces extinction from New Zealand government
(05/26/2010) Archey's frog is a survivor: virtually unchanged evolutionarily for 150 million years, the species has survived the comet that decimated the dinosaurs, the Ice Age, and the splitting of continents. Seventy million years ago New Zealand broke away from Australia, essentially isolating Archey's frog and its relatives from all predatory mammals. Yet, if the New Zealand government has its way this species may not survive the century, let alone the next few decades. The New Zealand government has put forward a controversial proposal to begin opening three of the nation's protected areas to mining: Great Barrier Island, Paparoa National Park, and Coromandel Peninsula where the last populations of Archey's frogs live. According to critics, the government's proposal could push Archey's frog toward extinction, while negatively impacting a number of other endangered species, beloved wild lands, and a nation driven by tourism.
A day to celebrate (and save) the world's amphibians: the 2nd Annual Save the Frogs Day
(04/28/2010) Friday, April 30th is for the frogs: educational programs, conservation walks with experts, frog leaping races, and the world's first protest to save frogs are all planned for the world's 2nd Annual Save the Frogs Day. Organized by the non-profit SAVE THE FROGS!, events are so far planned in 15 countries on every continent besides Antarctica—fittingly the only continent that lacks amphibians.
Frog in Australia goes from 'extinct' to very, very endangered
(03/08/2010) Facing habitat loss, pollution, climate change, and the devastating chytrid fungus, there has been little positive news about amphibians recently. However, a story out of Australia brings a much needed respite from bad news. In 2008 Luke Pearce, a fisheries conservation officer, stumbled on a frog that had been thought to be extinct for over thirty years. Not recorded since the 1970s, Pearce rediscovered the yellow-spotted bell frog (Litoria castanea) on rural Australian farmland in the Southern Tableland of New South Wales.
Photos: Madagascar's wonderful and wild frogs, an interview with Sahonagasy
(03/03/2010) To save Madagascar's embattled and beautiful amphibians, scientists are turning to the web. A new site built by herpetologists, Sahonagasy, is dedicated to gathering and providing information about Madagascar's unique amphibians in a bid to save them from the growing threat of extinction. "The past 20 years have seen resources wasted because of a poor coordination of efforts," explains Miguel Vences, herpetologist and professor at the Technical University of Braunschweig. "Many surveys and reports have been produced that were never published, many tourists found and photographed amphibians but these photos were not made available to mapping projects, many studies carried out by Malagasy students did not make use of literature because it was not available."
Common pesticide changes male frogs into females, likely devastating populations
(03/01/2010) One of the world's most popular pesticides, atrazine, chemically castrates male frogs and in some instances changes them into completely functionally females, according to a new study in the Proceedings of the National Academy of Sciences. The authors conclude that atrazine likely plays a large, but unsuspected role in the current global amphibian crisis.
Bronx Zoo puts 'extinct' frogs on display
(02/02/2010) The Bronx Zoo has a put a most unusual frog on display: the Kihansi spray toad. For one thing, the Kihansi spray toad survived on only 5 acres in the Kihansi gorge in Tanzania, adapted to the areas' unique and constant mist from the gorge and a waterfall. For another, female Kihansi spray toads give birth to live young, instead of laying eggs. Finally, the Kihansi spray toad is extinct—at least in the wild.
Photos: expedition in Ecuador reveals numerous new species in threatened cloud forest
(01/14/2010) An expedition into rainforests on Ecuador's coast by Reptile & Amphibian Ecology International (RAEI) have revealed a number of possible new species including a blunt-snouted, slug-eating snake; four stick insects; and up to 30 new 'rain' frogs. The blunt-snouted snake, which feeds on gastropods like slugs, is especially interesting, as its closest relative is in Peru, 350 miles away. In addition, a fifteen-year-old volunteer with the organization found a snake that specializes on snails. The researchers are unsure of this is a new species: the closest similar snake is 600 miles away in Panama.
Gone: a look at extinction over the past decade
(01/03/2010) No one can say with any certainty how many species went extinct from 2000-2009. Because no one knows if the world's species number 3 million or 30 million, it is impossible to guess how many known species—let alone unknown—may have vanished recently. Species in tropical forests and the world's oceans are notoriously under-surveyed leaving gaping holes where species can vanish taking all of their secrets—even knowledge of their existence—with them.
Kihansi spray toad goes extinct in the wild
(11/04/2009) This year's IUCN Red List has updated its assessment of the Kihansi spray toad, moving the species from Critically Endangered to Extinct in the Wild. With that another amphibian species has been lost to a combination of habitat loss and the devastating amphibian disease, the chytrid fungus. The Kihansi spray toad Nectophrynoides asperginis, which still survives in a number of zoos in the United States, had lived on just two hectares along the Kihansi gorge in Tanzania. The toad was specially adapted to the spray region of the Kihansi waterfall, which kept its small environment at a constant temperature and humidity.
Scientists uncover mystery of how frog plague kills its victims
(10/22/2009) One hundred and twenty species of frogs are reported to have gone extinct since 1980 (although the number is likely even higher). While devastated by habitat loss, pollution, and climate change, a baffling disease may be the biggest factor behind the alarming extinctions of frogs. Called chytridiomycosis, the disease is caused by the microscopic fungus Batrachochytrium dendrobatidis which kills its tiny victims indiscriminately.
Freshwater species worse off than land or marine
(10/15/2009) Scientists have announced that freshwater species are likely the most threatened on earth. Extinction rates for freshwater inhabitants are currently four to six times the rates for terrestrial and marine species. Yet, these figures have not lead to action on the ground.
South Korea's frogs have avoided amphibian crisis so far, an interview with Pierre Fidenci
(09/09/2009) Frogs are on the edge. Blasted by habitat loss, pollution, and a terrible disease, the chytrid fungus, species are vanishing worldwide and those that remain are clinging to existence, rather than thriving. However, an interview with Pierre Fidenci, President of Endangered Species International (ESI), proves that there are still areas of the world where amphibians remain in abundance. South Korea is not a country that is talked about frequently in conservation circles. Other nations in the region attract far more attention, such as Malaysia and Indonesia. But it was just this neglect that drove Pierre Fidenci to visit the nation and survey the amphibians there.
Save the frogs, save ourselves
(09/04/2009) Amphibians are going extinct around the globe. As a scientist specializing in frogs, I have watched dozens of species of these creatures die out. The extinction of frogs and salamanders might seem unimportant, but the reality couldn't be farther from the truth. Indeed, from regulating their local ecosystems, to consuming and controlling the population of mosquitoes and other insects that spread disease, to potentially pointing the way to new drugs for fighting diseases such as cancer or HIV-AIDS, the fate of these creatures is inexorably linked to our own.
Approximately 200 new frogs discovered in Madagascar threatened by political instability
(05/11/2009) Amid the amphibian extinction crisis—where amphibians worldwide are disappearing due to habitat loss, pollution, and a devastating fungal epidemic—the Spanish Scientific Research Council (CSIC) has announced some good news. In a survey of the island-nation of Madagascar they have identified between 129 and 221 new species of frogs. The discovery of so many new species nearly doubles the island’s total number of frogs.
The story of ‘Save the Frogs Day’, April 28th, An Interview with Kerry Kriger
(04/26/2009) Founder and director of SAVE THE FROGS!, Dr. Kerry Kriger is responsible for the first annual Save The Frogs Day on Tuesday, April 28th with events planned worldwide from the United States to Nepal, and Australia to China. “I’m continually amazed at the positive response it’s gotten. I thought of Save The Frogs Day one night last December when I was the only full-time SAVE THE FROGS! employee and I only had a couple part-time volunteers,” Kriger explains.
After disease engulfs island, rare mountain chicken frogs airlifted to safety
(04/23/2009) In a rescue operation that sounds straight out of an action film, 50 mountain chicken frogs were airlifted from the Caribbean island Montserrat after the discovery of Chytridomycosis, a fungal disease that has wiped out amphibian populations worldwide. Already, hundreds of the critically-endangered mountain chicken frogs succumbed to the disease, which is thought to have made its way to the island in late 2008 or early 2009.
Mexican Salamanders Used in Neurology Labs May Go Extinct in Wild
(04/21/2009) Ambystoma mexicanum, a salamander found only in the fetid canals surrounding Mexico City, faces extinction despite the efforts of researchers. As reported by Robert Koenig in the 5 December issue of Science, ecologists estimate that there are now only 100 of these salamanders per square kilometer in the canals, swamps, and lakes around the city – a rapid drop from their density of 600 per square kilometer in the 1980s. The population has dwindled as the system of waterways has dried up and become more polluted, and the salamander is now designated as critically endangered by the International Union for the Conservation of Nature (IUCN). Luis Zambrano of the National Autonomous University of Mexico is studying the axolotl to better understand its ecology, reproduction, and conservation. He’s working to identify the best areas of habitat and establish reserves.
Amphibians could develop immunity against devastating fungal disease
(04/03/2009) The fungal disease chytridiomycosis has ravaged amphibian populations, including contributing to several extinctions. But new research may bring some hope for currently threatened amphibians.
Poison frog diversity linked to the Andes
(03/10/2009) Electric colors, wild markings, and toxic skin have made poison frogs well-known inhabitants of the Amazon rainforest. With 353 recognized species, and probably more awaiting discovery, poison frogs are an incredibly diverse group of amphibians. While it has long been believed that the Amazon basin, itself, was the source of their diversity, a new study published in PLoS Biology has uncovered that the Andes mountain chain has served as an oven of evolutionary biodiversity for poison frogs over several million years.
Salamander populations collapse in Central America
(02/09/2009) Salamanders in Central America — like frogs, toads, and other amphibians at sites around the world — are rapidly and mysteriously declining, report researchers writing in the journal Proceedings of the National Academy of Sciences. Disturbingly, salamanders are disappearing from protected areas and otherwise pristine habitats.
12 new species of frogs discovered in India
(02/03/2009) A dozen previously unknown species of frogs have been discovered in the forests of Western Ghats according to a paper published in latest issue of Zoological Journal of Linnean Society, London. The 12 species have been identified following a revision of the Philautus genus and are the result of ten years of field study in Kerala, Tamil Nadu, Karnataka. Goa, Maharashtra, and part of Gujarat, in the Western Ghats. The Western Ghats are considered a global biodiversity hotspot for their species richness and the threats the mountain range faces.
One billion frogs harvested as food per year
(01/21/2009) The consumption of up to one billion frogs per year to satisfy human appetite for frog flesh is adding to the litany of pressures on global amphibian populations, write researchers in the upcoming issue of Conservation Biology.
Symposium tackles big question: how many species will survive our generation
(01/16/2009) Nine scientists dusted off their crystal balls Monday at the National Museum of Natural History in Washington DC, weighing in on the future of the world’s tropical forest. Despite the most up-to-date statistics, prognosis for the future of tropical forests varied widely. In the last few years a schism has occurred among biologists regarding the future of the tropics. No tropical scientist denies that rainforests and the species which inhabit them face unprecedented threats; neither do they argue that some of these forested regions and species will likely not survive the next fifty years. What has sparked debate, sometimes heated, is how bad will is it really? When the dust settles, what percentage of species will survive and how much forest will remain?
What is the greatest threat to rainforests: habitat destruction or climate change?
(01/13/2009) A symposium from the Smithsonian Institution meant to debate the level of threat by deforestation posed to the tropics shifted topic slightly near its end as scientists began to discus which was the most significant threat for rainforests and the species that inhabit them: habitat destruction or climate change?
Lack of information may slow conservation response to amphibian crisis
(12/01/2008) The Neotropics harbor between 30-50% of the world's reptiles and amphibians, but dramatic declines in both groups have been observed over recent decades. While a number of factors have been cited, many of the causes of reptile and amphibian declines are still poorly understood. The situation is paralleled by a lack of information of the natural history, ecology, and behavior of many species.
Invasive ant interferes with gecko's role in pollinating endangered plant
(11/28/2008) Invasive ants are destroying the symbiotic relationship between a colorful gecko and a critically endangered flower on the island of Mauritius, reports New Scientist citing research published by Dennis Hansen and Christine Müller in the journal Biotopica.
New hope of curing amphibian plague
(11/28/2008) Amphibians worldwide are in trouble. One of the most endangered animal groups, amphibians are increasingly threatened by habitat loss, pollution, and climate change. However the largest threat is chytridiomycosis, a devastating disease caused by a parasitic chytrid fungus known as Batrachochytrium dendrobatidis, otherwise known as Bd.
Prioritizing amphibian species for captive breeding to save them from extinction
(11/13/2008) Frogs, toads, salamanders and other amphibians are disappearing at an alarming rate. Of approximately 6,000 amphibian species in the world, about one third are classified as threatened or endangered. A disease caused by a chytrid fungus has devastated frogs living in mid to high elevation streams worldwide. Amphibians also face habitat destruction as forests and wetlands are developed and polluted by agricultural chemicals. In Panama, highland frog populations west of the Canal have declined at an alarming rate.
Scientists can't explain cause of amphibian extinction crisis
(11/13/2008) Scientists have yet to conclusively explain the underlying cause of global declines in amphibian populations, according to a study published in the journal Proceedings of the National Academy of Sciences. The research says that two leading theories for the demise of amphibians — both related to the emergence and spread of the deadly chytrid fungus — are not supported by scientific data.
Yellowstone amphibians in decline due to climate change
(10/27/2008) Climate change appears to be responsible for a "marked drop" in the population of three of four species of amphibian once common to Yellowstone National Park, report researchers writing in Proceedings of the National Academy of Sciences.
Mass amphibian die-offs affect ecosystems
(10/19/2008) Large-scale die-offs of amphibians due to the outbreak of a killer fungal disease is impacting the forest ecosystem in which they live, reports a new study published in the journal Ecosystems.
Armageddon for amphibians? Frog-killing disease jumps Panama Canal
(10/12/2008) Chytridiomycosis — a fungal disease that is wiping out amphibians around the world — has jumped across the Panama Canal, report scientists writing in the journal EcoHealth. The news is a worrying development for Panama's rich biodiversity of amphibians east of the canal.
52% of amphibians, 35% of birds at risk from climate change
(10/08/2008) 52 percent of the amphibians, 35 percent of birds and 71 percent of reef-building coral are "particularly susceptible" to climate change, warns an IUCN report.
More than half of Europe's amphibians face extinction by 2050
(09/28/2008) Researchers with the Zoological Society of London (ZSL) said over half of European amphibians face extinction in less than fifty years due to a perfect storm of threats: climate change, habitat loss, and disease. The announcement came at an event titled ‘Amphibians in a climate of change' hosted by Sir. David Attenborough, one of the world's most well-known wildlife enthusiasts due to his long career making nature documentaries.
Thought-to-be-extinct frog rediscovered in Australia
(09/11/2008) Scientists have rediscovered a thought-to-be-extinct species of frog in a creek in Northern Australia. The find offers hope that some species have survived a fungal epidemic that has devastated the amphibians of Queensland.
Amphibians face mass extinction
(08/11/2008) Amphibians are in big trouble. At least one third of the world's 6,300 known species are threatened with extinction, while at least 200 species have gone extinct over the past 20 years. Worryingly the outbreak of a deadly fungal disease, chytridiomycosis, is spreading throughout the tropics leaving millions of victims. A new study, published in the early edition of the Proceedings of the National Academy of Sciences, warns that there is "little time to stave off a potential mass extinction" of frogs, salamanders, and caecilians.
Naming rights for newly discovered 'walking frog' to be auctioned for conservation
(05/20/2008) The Amphibian Ark, an initiative to save disappearing amphibians from extinction, will auction of the naming rights of a newly discovered 'walking frog' in Ecuador to raise money for local conservation efforts.
New cures for human ailments under threat by global extinction crisis
(04/24/2008) In the film Medicine Man, a researcher in the Amazon discovers a cure for cancer in a rare ant. However, a logging company arrives at the wrong moment and, despite protestations from the main characters, the company destroys the tract of rainforest where the ant once survived.
No global warming link to dying frogs?
(03/25/2008) Scientists have fired another salvo in the heated debate over the role of climate change in the global decline of amphibians. Writing in the March 25 issue of PLoS Biology, a team of researchers led by Karen Lips of Southern Illinois University-Carbondale report finding "no evidence to support the hypothesis that climate change has been driving outbreaks of amphibian chytridiomycosis" -- a disease blamed for large-scale die-offs of amphibians. Other researchers have argued that climate shifts are worsening the outbreak of the fungal disease.
Rare jewel-colored frog rediscovered in Colombia
(03/13/2008) A brilliantly-colored frog has been rediscovered 14 years after its last sighting in a remote mountainous region in Colombia.
Half of Madagascar's amphibians may still await discovery
(03/11/2008) Madagascar is one of the most unique places on Earth for wildlife. When the public thinks of Madagascar's fauna most likely they think of one of the fifty species of lemur. Yet, Madagascar possesses a wealth of endemic wildlife outside of these unique prosimians. For example, to frog-lovers Madagascar is a paradise. The only amphibians living on Madagascar are frogs; the island is devoid of toads, salamanders, or newts. But what it lacks in other amphibians it makes up for in the number and beauty of its frogs. Currently, 240 frogs have been catalogued in Madagascar, 99 percent of which are endemic. Yet, amphibian expert Dr. Franco Andreone believes that, according to recent field studies, this may only be half of the frogs that actually live in Madagascar. Dr. Andreone believes the final tally could reach 500 species!
A Doomsday Vault for Frogs?
(02/27/2008) The Amphibian Ark, a doomsday vault for amphibians, will highlight Leap Day, February 29th, to recognize 2008 as the Year of the Frog. The campaign seeks to raise awareness of the global plight of frogs and other amphibians threatened by habitat loss, climate change, pollution and an emergent disease. Joining in the effort is the Wildlife conservation Society?s (WCS) Bronx Zoo and New York Aquarium, facilities that house some of the world's most threatened amphibians.
The Panamanian golden frog declared extinct by BBC Natural History crew
(02/04/2008) A national symbol of Panama has been declared extinct by BBC filmmakers. The crew was in Panama to film the unique frog for David Attenborough's most recent series on reptiles and amphibians, entitled Life in Cold Blood. The filmmakers achieved their objective and captured the golden frog on film, including rarely seen behvaior.
New research refutes global warming's influence on amphibians' worst enemy
(01/30/2008) There is no doubt that global warming is having a negative effect on amphibians, but it is yet unclear whether or not a direct causal relationship exists between global warming and the spread of a specific fungal epidemic wreaking havoc on amphibian populations worldwide.
Photos: Top 100 most threatened amphibians named
(01/21/2008) Due to numerous factors--including habitat destruction, pollution, climate change, and chytrid fungus--amphibians are probably the most threatened taxon of species in the world. Dr Jonathan Baillie, head of the EDGE organization which has just established an amphibian program, stated that "tragically, amphibians tend to be the overlooked members of the animal kingdom, even though one in every three amphibian species is currently threatened with extinction, a far higher proportion than that of bird or mammal species." To help save these species on the brink, EDGE, apart of the Zoological Society of London, has compiled a list of the hundred most threatened and evolutionary distinct amphibians.
Three salamander species discovered in Costa Rica
(01/06/2008) Scientists from the Natural History Museum of London have discovered three new species of salamander in south-eastern Costa Rica. This brings the nation's total to forty-three species, meaning that this small tropical nation contains approximately nine percent of the world's salamanders.
As amphibians leap toward extinction, alliance pushes "The Year of the Frog"
(12/31/2007) With amphibians experiencing dramatic die-offs in pristine habitats worldwide, an alliance of zoos, botanical gardens and aquariums has launched a desperate public appeal to raise funds for emergency conservation measures. Scientists say that without quick action, one-third to one-half the world's frogs, toads, salamanders, newts and caecilians could disappear.
Migrating frogs fare poorly when habitat altered
(12/19/2007) Habitat loss and fragmentation are putting amphibians already threatened by climate change, pesticides, alien invasive species, and the outbreak of a deadly fungal infection at greater risk of extinction, reported a study published in Science last week.
Physicists join fight to save amphibians from extinction
(11/19/2007) Physicists have joined the fight to save amphibians from extinction by using Optical Coherence Tomography (OCT) to investigate the properties of frogs skin.
Amphibian extinction may be worse than thought
(10/31/2007) Amphibian extinction rates may be higher than previously thought, according to new DNA analysis that found more than 60 unrecognized species in the Guiana Shield of South America.
Page 1 | Page 2