Tag: "amphibians" at biology news
Enticed By A Chemical Tease, Female Beetles Are Rewarded With A Nuptial Gift To Protect The Next Generation
...rections (or priapism) after eating frog-legs from amphibians
that ate blister beetles. Cantharidin is not only painful but toxic, and as little as 20 blister beetles' worth can be fatal to humans, Eisner reported in a 1990 article in the journal Chemoecology. Repeated tests in the Cornell laboratories demonst...
At Life's Most Sensitive Stage, Embryos Cope With Stress
...fied some contributing factors that could apply to amphibians
in manylocations if their embryos are exposed to extra ultraviolet light from the sun,thanks to a thinning ozone layer. When frog eggs are exposed to ultraviolet-B radiation, the light damages theembryos1 DNA. The damage can cause mutations and can ...
Two Environmental Articles: Deformed Frogs & Dioxin In Old Soil
...different states and Canadaspanned a wide range of amphibians
and was not limited to species, geography orclimate, according to James J. La Clair of The Scripps Research Institute in LaJolla, Calif. In a new report in the April 14 Web edition of EnvironmentalScience & Technology, La Clair and colleague John Ba...
Increasing Threat Of Extinction For Amphibians? Scientists To Seek Answers At NSF Workshop
... frogs and toads, andendangered several species of amphibians
with restricted ranges, scientists say.Alarming ne... These issues and some of the latest research on amphibians
will be the subjectof the NSF workshop. Experts from leading institutions in this field of biologyw...
USGS Responds to Amphibian Declines With Program In Great Smokey Mountains National Park
... Park, a region that has the greatest diversity of amphibians
in North America. The USGS survey is in respo...elieve that by monitoring the status and trends of amphibians
in the Great Smoky Mountains National Park they can help predict trends in amphibian populations els...
Fungus Suspect In Frog Deaths
...aboratory trials. A similar fungus was found on amphibians
in Panama last year. In the last two decades there have been many reports of frog population crashes around the world. Some are clearly due to pollution and other environmental changes. The idea has emerged that frog disappearances are an early...
Fatal Frog Fungus Found In The United States
...rid outbreaks in U.S. zoos. Untilnow, the few wild amphibians
found with the fungus -- in Maryland and Illinois --did not seem ill. The Arizona frog, however, had a life-threatening illness,reports herpetologist Philip C. Rosen, at the University of Arizona in Tucson.He collected the frog in a relatively undis...
Advances In Analyzing Environmental Endocrine Disruptors And Their Effects On
...tential Links To AmphibianDecline The decline of amphibians
have many researchers searching for the cause of t...ey ofCalifornia. These data are now in use to test amphibians
during their mostvulnerable stage as tadpoles. The researchers have collected tadpoles from thePacif...
USGS Issues Wildlife Health Alert: Associates Virus With Salamander Die-Offs
... die-offs are troubling to scientists because many amphibians
(the group including frogs, toads and salamanders)...s "double life" and which refers to the ability of amphibians
to live both on land and in water. Amphibians, which have been on Earth for some 350 million years a...
Scientist Fancies Frogs For Pain Research
...n the actionsof morphine and other opioid drugs in amphibians
and mammals." Dr. Stevens' lab is located in Tulsa, Oklahoma and houses approximately 100frogs involved in ongoing studies. He is director of the Analgesia ResearchLaboratory, a biomedical group dedicated to pain research using non-mammalianmodels. ...
Alien Species Cost U.S. $123 Billion A Year
...eextinction of at least 12 species of reptiles and amphibians
in Puerto Rico andother islands of the West Indies is blamed on mongooses, which also carry thepathogenic organisms for rabies and leptospirosis. Meanwhile, the United States has become the land of a billion rats, most of themthe introduced "Rattus r...
Largest Acoustics Meeting In History Expected
...s, is that sea lions and other"pinnipeds" are true amphibians
which perform reproductive activities in many cases on land and ice. Such animals have to adapt their hearing systems for land as well as water. And they developed other talents too--Schusterman will describe observations of an elephant seal with e...
Amphibian Revival: Build It And They Will Come
...sts at Washington University in St. Louis. Because amphibians
live in water and on land and are a vital link in ...not created -- then conditions can befavorable for amphibians
to thrive. I think this also shows that long-termstudies are needed to get a better grasp of what m...
Parasites, Not Pollution, Responsible For Some Frog Deformities, As Reported In The 30 April Issue Of Science
...rs, feeding worries thatthe ecologically sensitive amphibians
are bellwethers of some largerenvironmental catastrophe. But now two studies in the 30 April issue of Science provide the strongest evidence yet that at least some of thefrogs' bizarre deformities are the direct result not of pesticides or ozoneloss...
Salamanders may one day monitor degradation in small streams
...ypes of pollution, lungless salamanders are choice amphibians
tomonitor stream community health. "Four species of lungless salamander appear to be sufficiently abundantand widespread in Pennsylvania to qualify as potential bioindicators," Roccotold attendees today (June 25) at the 1999 joint annual m...
Agriculture linked to red-legged frog decline in California
The global decline in amphibians
has been attributed to everything from UVradiation to global warming. The first concrete evidence that agriculture mayplay a role in amphibian decline was presented by Carlos Davidson of theUniversity of California, Davis, at the June 1999 Society fo...
Mosquitofish threaten amphibians
...ars. Because these streams have no native fish,the amphibians
that live there lack defenses against fish predati... Previous studies have shown that mosquitofish eat amphibians
such as Californianewt larvae in Santa Monica Mountain streams. But these studies have beencriticize...
Trouble for the world's turtles
...e survival crisis." The main causes ofdeclines in amphibians
are associated with ecological change. The turtle declineseems first and foremost to be driven by human consumption. The wealthy eatturtles as a luxury food item especially in Southeast Asia. In places likeMadagascar and Mexico, they are eaten by t...
USGS issues wildlife health alert: Chytrid fungus infection
... can do to fix the situation." Chytrid fungus in amphibians
was first identified in 1998 by Green and other re... Arizona and has caused the death of many zoo-kept amphibians
in the United States. Scientists don't know how this fungus is transmitted from one area to anothe...
Hurricane Hugo serves as living laboratory for Clemson University forest
...t six months after Hugo, thenumber of reptiles and amphibians
remained significantly lower than before thestorm. One of the hardest hit areas was the Santee Experimental Forest in theFrancis Marion National Forest north of Charleston. This area received the fullbrunt of the strongest winds, called the ...
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