Tag: "frogs" at biology news
European common frog found to use novel mating strategy
Berkeley -- One of Europe's most common backyard frogs
has been keeping a secret that, despite centuries ... by more than one male. In addition, numerous male frogs
typically gang around the egg clutch for their turn at fertilization. According to Vieites, genetic ...
Viral suspect for amphibian decline traced to human spread through bait
...lu have to do with the world-wide disappearance of frogs
and salamanders, otherwise known as "Amphibian Dec...rchers suspect resulted when the virus jumped from frogs
to fish. The salamander virus however, is distinct from either of these and may be a recent developm...
Excess levels of nitrogen, phosphorus linked to deformed frogs
... more rapid pace in the oughts: scores of deformed frogs
flopping around as best they can, found often near...for chemical pollutants or hormonal changes in the frogs
as culprits. But recent evidence linked the deformities missing, extra, or deformed limbs to the ...
Nutrients cause increase in parasites and frog deformities
Extra and missing-legged frogs
have become increasingly common in North American wetlands over the last decade. Research implicates a flatworm parasite, Ribeiroia ondatrae, as the culprit of these deformities. Reasons for the apparent increase in infection and malformations, howev...
Concerns remain about UVB damage to amphibians
...ne site near Corvallis, Ore., 75-80 percent of the frogs
are deformed, mostly linked to a parasite and other ecological changes. And egg mortality in embryos of the western toad and some other species in parts of the Oregon Cascade Range have approached 100 percent in some recent years. ...
Without words, bullfrogs communicate through stutters in their croaks
... single sound'?" Within a single vocalization, the frogs
exhibited a pattern of croaks with and without stu...egan with a croak containing no stutters; when the frogs
started stuttering they generally did so within a croak that contained one stutter only; when they i...
Dramatic decline of California native frog linked to introduced trout in mountain lakes
...ra lakes, but that removing the fish can allow the frogs
to flourish once more. Vredenburg's study was publ...ph Grinnell complained that mountain yellow-legged frogs
(Rana muscosa) were so abundant that his survey team was stepping on them. Today there are probably ...
More than 300 critically endangered species completely unprotected, new study shows
...ecies from the Mantella genus, a group of colorful frogs
endemic to Madagascar, such as the harlequin mantella (Mantella cowanii) and the black-eared mantella (Mantella milotympanum). BIRDS: The world's 1,171 threatened bird species were analyzed, revealing 232 threatened gap species. CR bird species witho...
New study of land use effects on amphibian populations gets underway at UGA laboratory
... as differences in life history among salamanders, frogs
and toads. Second, because recent research is revealing the extent and importance of upland habitat use by amphibians, this study will focus on the responses of terrestrial life stages of pond-breeding amphibians to upland habitat alteration." The re...
Watching genes in action
...iously to show simultaneous action of two genes in frogs
and in zebrafish by painting the genes with flores...model for human kidney development because, unlike frogs
and fish, the chicken kidney develops in three stages like the human kidney," says Mauch. She ...
Out-of-balance ecosystems play role in demise of amphibian populations
...t players in ecosystem functioning, he added. "The frogs
that develop from tadpoles subsequently devour thousands of insects," he said. "The frogs
themselves are also important prey for reptiles, birds and mammals." In 1999, two teams of researche...
History of frog deformities suggests emerging disease
... historical examination of amphibian deformities - frogs
with extra legs growing out of the abdomen, for ex... or escape predators. "We know that most malformed frogs
die before sexual maturity," says Johnson, adding that these malformations, coupled with other facto...
Prescribed burns can threaten pine Savannah amphibians
.... "A single pond can easily harbor more species of frogs
than inhabit entire states in the northern and western U.S.," says Fauth. Schurbon and Fauth found that amphibian diversity and abundance was far lower in areas that had been burned more recently. An analysis correcting for variations in environmenta...
UC Berkeley museum biologists to repeat 85-year-old Yosemite National Park wildlife survey
...s fall and next spring to look for amphibians like frogs
and salamanders. A museum photographer will follow up by taking photos of the same areas as did Grinnell and his crew, ideally from the exact same spot. Though the study is designed to assess the status of all vertebrates, there are some animals th...
Science Picksleads, feeds and story seeds (July 2003)
Looking for summer science stories? Coral to frogs
to volcanoes. This monthly collection of science stories can help you cover ongoing earth and natural science research and investigations at USGS---photos and web links are provided to enhance your story. LEAD : The Nighttime Journey of Coral Larvae...
ACS announces awards for environmentally conscious business innovation
...people. Studies show other fungicides are toxic to frogs
and earthworms and, when they leach into the ocean, to shrimp and other forms of life. Since Serenade® consists of natural products used in a fermentation process its byproducts can actually be used as fertilizer....
Chirping frogs keep UH scientists hopping
...ble. Last year, the team found no eggs at all. The frogs
have been successfully kept in captivity in a UH lab, but breeding the frogs
has proved elusive. So, the Wells team decided to go back to basics understand the frogs
in their e...
From slime to saviors: Sorting out the fungal family tree
... deal with an aquatic fungus that is now attacking frogs
and may be partly responsible for their recent worldwide decline. The study could also point researchers to species of fungi that, by virtue of being related to medically or commercially important species, may produce drugs or other useful products. ...
Scientists hone in on cause of amphibian deformities
CORVALLIS, Ore. A dramatic increase in deformed frogs
and other amphibians is being caused by a range of... received widespread media attention when deformed frogs
were spotted by school children in Minnesota in 1995, but it quickly became apparent that its scope ...
Study employs backyard scientists to document global warming impact
... at bird feeders, heard in the earlier croaking of frogs
and sniffed in the first waft of lilacs. "Local weather is extremely variable from year to year, and animals and plants respond to many other factors besides temperature," Hall said. "To be able to detect impacts of climate warming, we have to hav...
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