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Preview: Brightsurf Science News :: Amphibians News

Amphibians Current Events and Amphibians News from Brightsurf

Amphibians Current Events and Amphibians News Events, Discoveries and Articles from Brightsurf

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This dance is taken: Hundreds of male frog species change colors around mating time

Wed, 20 Sep 17 00:11:40 -0700

Some of nature's most vibrant colors occur in frogs, who peek out from rainforests and marshes in startling shades of blue, yellow and red. But for hundreds of species, only males flaunt flashy colors -- and sometimes only for a few hours, days or weeks each year. Scientists report that the males of at least 178 species of frogs undergo a temporary color change during their breeding season. Their research will help them understand why.

Foster tadpoles trigger parental instinct in poison frogs

Wed, 20 Sep 17 00:01:10 -0700

Especially male poison frogs piggyback their offspring to pools in the rainforest. Now, researchers from Vetmeduni Vienna, the University of Vienna and Harvard University showed that this parental behavior can be triggered experimentally. With unrelated tadpoles placed on their backs, male -- and even female -- 'foster parents' behave as if they had picked up the tadpoles themselves. This showed for the first time that an external stimulus triggers complex behaviors in amphibians.

Emerging disease further jeopardizes North American frogs

Tue, 19 Sep 17 00:08:30 -0700

A deadly amphibian disease called severe Perkinsea infections, or SPI, is the cause of many large-scale frog die-offs in the United States, according to a new study by the US Geological Survey.

When it comes to the threat of extinction, size matters

Mon, 18 Sep 17 00:16:10 -0700

Animals in the Goldilocks zone -- neither too big, nor too small, but just the right size -- face a lower risk of extinction than do those on both ends of the scale, according to an extensive global analysis.

Ancient amphibian had mouthful of teeth ready to grab you: UTM research

Fri, 15 Sep 17 00:00:00 -0700

The idea of being bitten by a nearly toothless modern frog or salamander sounds laughable, but their ancient ancestors had a full array of teeth, large fangs and thousands of tiny hook-like structures called denticles on the roofs of their mouths that would snare prey, according to new research by paleontologists at the University of Toronto Mississauga (UTM).

The evolution of 'true frogs' defies long-held expectations of science

Wed, 13 Sep 17 00:06:20 -0700

New research from the University of Kansas appearing in Royal Society Biology Letters shows, in contrast to expectations, 'the rapid global range expansion of true frogs was not associated with increased net-diversification.'

Climate change challenges the survival of fish across the world

Wed, 13 Sep 17 00:00:50 -0700

University of Washington researchers have published the first analysis looking at how vulnerable the world's freshwater and marine fishes are to climate change. Their paper, appearing online Sept. 11 in Nature Climate Change, used physiological data to predict how nearly 3,000 fish species living in oceans and rivers will respond to warming water temperatures in different regions.

UT faculty member helps identify new species of prehistoric crocodile

Tue, 12 Sep 17 00:00:50 -0700

Around 95 million years ago, a giant relative of modern crocodiles ruled the coastlines and waterways of what would one day become north central Texas. A team including the University of Tennessee, Knoxville's Stephanie Drumheller-Horton has identified this species, Deltasuchus motherali.

Neuroscientists explore the risky business of self-preservation

Thu, 07 Sep 17 00:02:30 -0700

Northwestern University researchers have learned that the escape response for prey is more nuanced than previously thought. In a study of larval zebrafish, the researchers are the first to find that the animal's innate escape response incorporates the speed of the approaching predator -- not just the proximity of the predator -- in its calculation of how best to flee. The new information can help scientists understand the neural mechanics that fuel the most elemental self-preservation instincts.

More research needed on effects of maternal stress in wild animals

Thu, 31 Aug 17 00:16:00 -0700

If a human mother is stressed while pregnant, research shows her child is much more likely to have emotional, cognitive or even physiological problems, such as attention deficit, hyperactivity, anxiety, language delay, obesity, diabetes and hypertension. Conversely, the results of maternal stress on the offspring of other animals -- particularly wildlife under threat from predators -- is believed to be positive, and contributes to their survival.

Countries in Europe with the richest biodiversity do not always receive more funding

Wed, 23 Aug 17 00:14:50 -0700

A recent study, published in the journal Conservation Biology, reveals that the investments and resources allotted for conservation only partially tally with the levels of biodiversity in the European Union. Thus, countries such as Portugal, Slovakia, Greece and the Czech Republic receive less funding than they would be entitled to as per their biodiversity.

Wood frogs research clarifies risks posed to animals by warming climate

Sat, 19 Aug 17 00:10:30 -0700

As conditions warm, fish and wildlife living at the southern edge of their species' ranges are most at risk, according to Penn State researchers who led a major collaborative study of how wood frogs are being affected by climate change.

Mechanisms explaining positional diversity of the hindlimb in tetrapod evolution

Fri, 18 Aug 17 00:06:00 -0700

Elucidating how body parts in their earliest recognizable form are assembled in tetrapods during development is essential for understanding the nature of morphological evolution. Nagoya University researchers found in eight tetrapod species that the position of the sacral vertebrae and the hindlimbs is determined by the initiation timing of Gdf11 gene expression. This will contribute to a forthcoming model explaining the coupling of spine and hindlimb positioning - a major step in fully understanding tetrapod evolution.

Frogs that adapt to pesticides are more vulnerable to parasites

Tue, 15 Aug 17 00:08:40 -0700

Amphibians can evolve increased tolerance to pesticides, but the adaptation can make them more susceptible to parasites, according to a team that includes researchers at Rensselaer Polytechnic Institute.

Three species of tiny frogs discovered in Peruvian Andes

Thu, 27 Jul 17 00:05:10 -0700

A University of Michigan ecologist and his colleagues have discovered three more frog species in the Peruvian Andes, raising to five the total number of new frog species the group has found in a remote protected forest since 2012.

Humans identify emotions in the voices of all air-breathing vertebrates

Wed, 26 Jul 17 00:01:20 -0700

Amphibians, reptiles, mammals -- all of them communicate via acoustic signals. And humans are able to assess the emotional value of these signals. This has been shown in a new study reported in 'Proceedings of the Royal Society B'. The authors interpreted their findings as evidence that there might be a universal code for the vocal expression and perception of emotions in the animal kingdom.

USF Biologists find frog's future health influenced by gut microbes as tadpoles

Thu, 20 Jul 17 00:14:40 -0700

University of South Florida biologists have found that a crucial window in the development of tadpoles may influence a frog's later ability to fight infectious diseases as an adult.

Amphibians can become tolerant to pesticides, but at a cost

Mon, 17 Jul 17 00:02:00 -0700

Amphibians can develop tolerance to pesticides, but this tolerance can lead to increased susceptibility to parasites, according to new research from Binghamton University, State University of New York.

Prelude to global extinction

Mon, 10 Jul 17 00:04:30 -0700

In the first such global evaluation, Stanford biologists found more than 30 percent of all vertebrates have declining populations. They call for curbs on the basic drivers of these losses.

In the egg, American bullfrogs learn how to avoid becoming lunch
When exposed to potential predators as an embryo, the invasive American bullfrog