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Tag: "salamanders" at biology news

Salamanders suffer delayed effects of common herbicide

... metamorphosis, the stage where the water-dwelling salamanders lose their gills and develop lungs that enable the...ter exposure ceased, said researchers. Compared to salamanders not exposed to atrazine, survivors of the atrazine exposure had significantly lower survival 421 day...

How fish mend a broken heart

...ration," they said. For instance, certain newts or salamanders can regenerate limbs, spinal cord, retina, brain, and heart tissue. While progenitor cell populations have been identified within most mammalian organs, including skin, skeletal muscle, brain, and heart, these cells vary widely in frequency and the...

Habitat microstructure drives salamander metamorphosis

Whether salamanders transform into their terrestrial, adult form or re...t and Chippindale's results show that paedomorphic salamanders prevailed in streambeds made of large well-sorted gravel, whereas metamorphic salamanders were found...

Climate change drives widespread amphibian extinctions

...he world's 6,000 or so species of frogs, toads and salamanders face extinction--a figure far greater than that for any other group of animals. ...

Cattle grazing may help rather than hurt endangered species

...ntially, leaving endangered fairy shrimp and tiger salamanders without enough time to mature before their temporary aquatic environments disappear. "Consequently, land managers can play an important role in climate change impacts, i.e. they can exacerbate or ameliorate, the local impacts of global change." Pyke...

Elusive salamanders have role in developing new sampling models

Rare salamanders at a Georgia military base are the guinea pigs for...ies has vanished. After not finding any flatwoods salamanders since 2001, Fort Stewart biologists were a bit concerned and were looking for a better survey method...

Retina adapts to seek the unexpected, ignore the commonplace

...s." While manipulating the visual scenes faced by salamanders and rabbits, Meister and colleagues recorded neura...ironment. Because this adaptation occurred in both salamanders and rabbits, Meister concluded that it typifies retinal function in both amphibians and mammals, ani...

Discovery of an American salamander where it shouldn't be: Korea

.... "I've discovered and named nearly 50 species of salamanders - more than 10 percent of the total in the world. ...ue of Nature. The find suggests that the lungless salamanders are more widespread than people thought, and some 60 to 100 million years ago may have had a worldwi...

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