Scientists track frog-killing fungus to help curb its spread

With the help of advanced genetic testing and hundreds of frog skin swabs, an international team of researchers has created the most complete map to date of when and where different genetic variants of the frog-killing Batrachochytrium dendrobatidis have infected frog populations around the world. The investigation also uncovered a whole new genetic lineage of the fungus, one that appears to have originated in Asia and may be the oldest variant yet discovered.

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Ecologists find strong evidence of fishing down the food web in freshwater lake

Research by ecologists shows strong evidence in a freshwater lake of 'fishing down the food web' – the deliberate shift away from top predatory fish on the food chain to smaller species closer to the base. While the effect has historically been observed almost exclusively in marine ecosystems and ocean fisheries, there has been little evidence of the effect in freshwater ecosystems.

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March of the multiple penguin genomes

A new article presents 19 high-coverage penguin genome sequences. Adding this to the two previously published penguin genomes, there are now genome sequences available for all living penguin species. Here, the Penguin Genome Consortium, made up of researchers from 10 countries, has produced an unparalleled amount of information that covers an entire biological order. Research from evolution, the impact of human activities impact, and environmental changes, will benefit from this work.

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Not the hairstyle, but the content: Hair indicates whether wild animals were 'stressed'

Scientists have now demonstrated that the 'stress' hormone cortisol is deposited in hair of wild mongooses in Portugal and determined baselines for cortisol in these carnivores. It is now possible to investigate whether different habitats and changed living conditions, such as the return of the Iberian lynx, place a particular burden on the mongooses.

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