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News articles on amphibians
Mongabay.com news articles on amphibians in blog format. Updated regularly.
(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.
Earthquake triggers decline in a frog species
(12/03/2007) In 1999 a 7.3 earthquake struck Nantou County at the center of quake-prone Taiwan. The earthquake caused considerable damage: over 2,000 people died and just under 45,000 houses were destroyed. It was Taiwan's strongest quake in a hundred years. The quake also devastated a subpopulation of riparian frogs, Rana swinhoana, which had been under scientific study for three years prior. This devastation allowed scientists the opportunity to study the population changes in a species affected suddenly and irretrievably by natural disaster.
Global warming may provoke evolution
(11/26/2007) Some 80 million years ago, during a period of global warming, a group of relatively immobile salamanders trekked from western North America to the continent that became Asia, report researchers writing in this week's issue of the journal Proceedings of the National Academy of Science.
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.
Scientists find treatment for killer frog disease
(10/29/2007) New Zealand scientists have found a treatment for a disease blamed for the death of millions of amphibians worldwide, according to a report from BBC News. However, at best, the cure would only be applicable to captive populations. The disease is killing many amphibians in apparently pristine habitats.
As colorful frog leaps toward extinction, experts look for clues
(10/29/2007) A brightly coloured tropical frog under threat of extinction is the focus of a new research project hoping to better understand how environment and diet influence its development and behaviour.
16,306 species threatened with extinction
(09/12/2007) 16,306 of 41,415 species on the IUCN Red List are threatened with extinction, reports the World conservation Union (IUCN). The total number of known extinct species now stands at 785, while a further 65 are only found in captivity or in cultivation. One in four mammals, one in eight birds, one third of all amphibians and 70% of the world's assessed plants on the 2007 IUCN Red List are considered at risk.
Two new species of salamander discovered in Panama
(09/09/2007) Scientists have discovered two new species of salamanders from the mountainous Costa Rica-Panama border region. The findings, published by David B. Wake, Jay M. Savage, and James Hanken in the journal Copeia, push the number of salamanders known in the region to 24, making it a hotspot in terms of salamander biodiversity.
New poison frog species discovered in Colombia
(08/28/2007) Scientists have discovered a previously unknown species of poison frog in a remote mountainous region in Colombia. The tiny frog has been dubbed the "golden frog of Supata" and lives only in a 20 hectare area in Colombia's Cundinamarca region.
Scientists meet in Hungary to discuss saving dying frogs
(08/27/2007) Scientists are meeting this week in Budapest, Hungary to discuss last-ditch efforts to save the world's most threatened frogs from extinction.
Frog killing diseases worse than thought in California
(08/06/2007) The deadly fungal disease that is killing amphibians worldwide can likely be spread by sexual reproduction reports a new study published in the early online edition of the journal Proceedings of the National Academy of Sciences. The findings suggest that protecting frogs and other amphibians from the pathogen will be more complicated than previously believed.
Forest disturbance reduces biodiversity in the Amazon rainforest
(07/02/2007) Two new studies in the Amazon rainforest show that plantation forests and second-growth forests have lower species counts for butterflies, reptiles, and amphibians than adjacent primary forest areas. The research has important implications for conservation of tropical biodiversity in a world where old-growth forest is increasingly replaced by secondary forests, industrial plantations, and agricultural landscapes.
Pictures of newly discovered species in Suriname
(06/04/2007) Scientists documented 467 species, including 24 species believed new to science, during a rainforest survey in eastern Suriname, South America. The expedition, led by conservation International (CI), was sponsored by two mining companies, BHP-Billiton Maatschappij Suriname (BMS) and Suriname Aluminium Company LLC (Suralco), hoping to mine the area for bauxite, the raw material used to make aluminum. conservation International said the Rapid Assessment Survey (RAP) will help "give miners guidance on protecting unique plants and animals during potential future development," according to a statement from the organization.
Frogs rafted from South America to the Caribbean 29M years ago
(06/04/2007) Large populations of frogs in Central America and the Caribbean rafted, over the ocean from South America more than 29 million years ago, reports a new study published in the June 4 early online edition of The Proceedings of the National Academy of Sciences.
Global warming may be key factor in frog deaths
(05/30/2007) Three papers published in this week's issue of the journal Nature debate the proximate causes for the global decline of amphibians, but nonetheless reveal mounting concerns among scientists over the continuing disappearance of frogs, salamanders, and their relatives.
Scientists find possible cure for global amphibian-killing disease
(05/23/2007) Scientists have discovered a possible treatment for the fungal disease that has killed millions of amphibians worldwide. Presenting Wednesday at the General Meeting of the American Society for Microbiology in Toronto, Professor Reid N. Harris at James Madison University reported that Pedobacter cryoconitis, a bacteria found naturally on the skin of red-backed salamanders, wards off the deadly chytridiomycosis fungus, an infection cited as a contributing factor to the global decline in amphibians observed over the past three decades.
Why poison dart frogs are poisonous
(05/14/2007) Mites -- not ants as long believed -- appear to be the primary source of toxins used by poison arrow frogs to defend against predators, reports new research published in the early online edition of Proceedings of the National Academy of Sciences (PNAS). Poison dart frogs, colorful amphibians with skin secretions so toxic that they are used by indigenous populations to poison the tips of hunting arrows, are one of several groups of animals capable of sequestering deadly compounds from dietary sources without being harmed. Until now, it was believed that ants were the primary source of these defensive skin alkaloids in frogs.
Frogs avoid damaging UV-B radiation, reducing extinction risk
(04/18/2007) Poison arrow frogs appear to make special effort to avoid exposure to damaging ultraviolet-B radiation, according to research published in the journal Biotropica. The findings are significant in light of increasing levels of UV-B radiation due to ozone depletion.
First amphibians were biters not suckers
(04/16/2007) Prehistoric aquatic amphibians developed the ability to feed on land well before they became terrestrial reports a new study in the early online edition of Proceedings of the National Academy of Sciences (PNAS).
Bad news for frogs; amphibian decline worse than feared
(04/16/2007) Chilling new evidence suggests amphibians may be in worse shape than previously thought due to climate change. Further, the findings indicate that the 70 percent decline in amphibians over the past 35 years may have been exceeded by a sharp fall in reptile populations, even in otherwise pristine Costa Rican habitats. Ominously, the new research warns that protected areas strategies for biodiversity conservation will not be enough to stave off extinction. Frogs and their relatives are in big trouble.
Cane toads to invade 2 million square kilometers of Australia
(04/03/2007) Cane toads are dramatically expanding their range in Australia and may eventually double their current extent to occupy over 2 million square kilometers, according to new projections by a team of scientists writing in Proceedings of The Royal Society B: Biological Sciences. The researchers report that the invasive amphibians increasingly occupying zones outside their native conditions, putting native Australian species at ever greater risk.
Photos of monster cane toad captured in Australia
(03/27/2007) A conservation group captured a giant cane toad in the Australian city of Darwin. The beast weighed 840 grams (1.8 pounds) and measured 20.5 cm (8 inches).
Salamanders dying due to common pesticide
(03/25/2007) Atrazine, one of the most widely used pesticides in the United States, may be killing salamanders, according to American biologists writing in the journal Environmental Health Perspectives.
Poisonous tree frog brings hope to indigenous community in the Amazon
(03/19/2007) Used for centuries as a natural disease prevention and physical stimulant, an Amazonian tree frog has become a symbol of Brazil's fight to benefit the Indigenous from scientific developments based on their knowledge.
'Ark' aims to save amphibians from extinction
(02/15/2007) Scientists are meeting in Atlanta is discuss last minute efforts to save disappearing amphibians from extinction. A mysterious outbreak of fungal disease has wiped out an estimated 170 species in the past decade, and put more than one-third of the world's remaining amphibians at risk.
Salamander diversity tied to elevation in the tropics
(02/13/2007) Scientists have long documented high levels of biodiversity at mid-elevation ecosystems in the tropics, but no one has ever conclusively determined the underlying causes of this species richness. A new study, which examined 13 genera and 137 species of tropical salamanders, suggests that this pattern may result from the time when the habitats were first colonized.
Pesticides threaten cloud forests in Costa Rica - new study
(01/22/2007) Pesticides from coffee and banana cultivation are accumulating in Costa Rica's biodiverse cloud forests according to research published earlier this month in Environmental Science & Technology. The findings have implications for conservation efforts in both the Central American country and in other parts of the world.
Poison frogs less toxic when habitat degraded
(10/02/2006) A new study suggests habitat degradation may put some frogs at greater risk of predation by reducing their toxicity. Studying Mantella poison frogs on the island of Madagascar, a team of researchers led by Valerie C. Clark, a chemistry PhD student at Cornell University who earlier this year published a paper describing the origin of frog toxins as being the insects upon which they feed, found that frogs collected from intact forests "consistently have a greater diversity of insect-derived toxins accumulated in their skin than do frogs from disturbed and fragmented forests."
$400-Million Initiative Proposed to Address Amphibian Crisis
(07/09/2006) Fifty of the leading amphibian researchers in the world have called for a new Amphibian Survival Alliance, a $400-million initiative to help reduce and prevent amphibian declines and extinctions -- an ecological crisis of growing proportion that continues to worsen.
Frog extinction crisis requires unprecedented conservation response
(07/06/2006) The world's leading amphibian experts are calling for dramatic steps, including the formation of an Amphibian Survival Alliance (ASA), to prevent the massive extinction of amphibians worldwide. Scientists say amphibians -- cold-blooded animals that include frogs, toads, salamanders, newts and caecilians -- are under grave threat due to climate change, pollution, and the emergence of a deadly and infectious fungal disease, which has been linked to global warming. According to the Global Amphibian Assessment, a comprehensive status assessment of the world's amphibian species, one-third of the world's 5,918 known amphibian species are classified as threatened with extinction. Further, at least 9, and perhaps 122, have gone extinct since 1980.
Climate change fuels more forest fires in the United States
(07/06/2006) New research says the frequency of large forest fires has increased in the western United States since the mid-1980s as spring temperatures climbed, mountain snows melted earlier and summers got hotter. The new findings, published in the July 6 issue of Science Express, suggest that climate change, not fire suppression policies and forest accumulation, is the primary driver of recent increases in large forest fires.
Previously undiscovered species found in Tanzania
(06/22/2006) The first field surveys of the Rubeho Mountains in Tanzania revealed over 160 animal species--including a new species of frog and eleven endemic species--according to an article published in the African Journal of Ecology this month. The findings elevate the importance of protecting this biologically-rich wilderness area and the broader Eastern Arc Mountain range from destructive activities underway such as clear-cutting for agriculture, logging and poaching.
'Extinct' frog rediscovered in Colombia
(05/18/2006) Researchers exploring a Colombian mountain range found surviving members of a species of Harlequin frog believed extinct due to a killer fungus wiping out amphibian populations in Central and South America. The discovery of what could be the last population of the painted frog (Atelopus ebenoides marinkellei) indicates the species has survived the fungus, providing hope that other species also might avoid elimination from the epidemic caused by a pathogenic fungus of unknown origin.
In tungara frogs, female choice for complex calls led to evolution of unusual male vocal cord
(05/03/2006) Male tropical tungara frogs have evolved masses on their vocal cords that help them woo females with complex calls, show scientists working at the Smithsonian Tropical Research Institute (STRI) in Panama.
16,119 species at risk of extinction
(05/02/2006) The number of known threatened species reaches 16,119. The ranks of those facing extinction are joined by familiar species like the polar bear, hippopotamus and desert gazelles; together with ocean sharks, freshwater fish and Mediterranean flowers. Positive action has helped the white-tailed eagle and offers a glimmer of hope to Indian vultures. The total number of species declared officially Extinct is 784 and a further 65 are only found in captivity or cultivation. Of the 40,177 species assessed using the IUCN Red List criteria, 16,119 are now listed as threatened with extinction. This includes one in three amphibians and a quarter of the world's coniferous trees, on top of the one in eight birds and one in four mammals known to be in jeopardy
6 species of frogs discovered in Laos
(04/20/2006) Six new species of frogs have been discovered in the Southeast Asia nation of Lao PDR, according to the Bronx Zoo-based Wildlife conservation Society (WCS). Three newly discovered frog species are described in the recent issue of Copeia, the journal of the American Society of Herpetologists and Ichthyologists. WCS says that little is known about the new frogs, other than the location they were found and how the compare morphologically to similar species.
Harmless frogs gain protection by mimicking toxic species
(03/13/2006) When predators learn to avoid a highly toxic frog, they generalize, and this allows a harmless frog to mimic and be more abundant than a frog whose poison packs less punch, biologists at The University of Texas at Austin studying poison dart frogs in the Amazon have discovered.
Pictures of new species discovered in New Guinea
(02/07/2006) A team of scientists led by conservation International (CI) found dozens of new species in a survey of New Guinea's Foja Mountains. The December 2005 trip by a team of U.S., Indonesian, and Australian scientists discovered new species of frogs, butterflies, plants, and an orange-faced honeyeater, the first new bird from the island of New Guinea in more than 60 years.
Fungus may be devastating amphibian populations worldwide
(02/06/2006) Her most likely culprit is a hugely infectious disease caused by a fungus. In just four months -- from mid-September of 2004 to mid-January of 2005 -- Lips and her colleagues saw more than half the amphibian population of El Cope, Panama, sicken and die from this disease.
Extinctions linked to climate change
(01/11/2006) A new report that links global warming to the recent extinction of dozens of amphibian species in tropical America is more evidence of a large phenomena that may affect broad regions, many animal species and ultimately humans, according to researchers at Oregon State University.
Climate change is killing frogs finds new research
(01/11/2006) The dramatic global decline of amphibians may be directly connected to global warming warns a new study published in the journal Nature.
Pantanal, the world's largest wetland, disappearing finds new report
(01/10/2006) Deforestation has destroyed 17 percent of the Pantanal, the world's largest wetland, according to a new report from conservation International. The Pantanal, an area of flooded grassland and savanna covering 200,000 square kilometers during the rainy season, includes parts of Brazil, Paraguay, and Bolivia and is fed by the Rio Paraguay. The wetland is home to some 3500 species of plant and 650 species of birds. About 125 types of mammals, 180 kinds of reptiles, 41 types of amphibians, and 325 species of fish have been found in the region. The Pantanal in an important source of freshwater to neighboring farming areas and downstream urban areas.
Salamanders feed on bat guano in cave system
(11/21/2005) A species of blind, cave-dwelling salamander in Oklahoma feeds on bat guano according to research published in Proceedings of the Royal Society and presented on the online version of Nature.
Frogs may help in fight against HIV
(10/01/2005) A new weapon in the battle against HIV may come from an unusual source -- a small tropical frog. Investigators at Vanderbilt University Medical Center reported this month in the Journal of Virology that compounds secreted by frog skin are potent blockers of HIV infection.
conservation scientists want $404 million to save disappearing amphibians
(09/20/2005) Yesterday conservation scientists proposed a $404 million effort to preserve declining global amphibian poplations. The strategy would call for funding from governments, private institutions and individual donors to finance long-term research, protect critical habitats, reduce the trade in amphibians for food and pets, and establish captive breeding programs.
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