This is a news story, published by Science News, that relates primarily to Sierra Nevada news.
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killer fungusScience News
•82% Informative
Sierra Nevada yellow-legged frogs are once again thriving after being driven to the brink of extinction.
The killer: the chytrid fungus Batrachochytrium dendrobatidis, or Bd for short.
Bd has been implicated in the population declines of at least 500 amphibian species, including 90 possible extinctions.
About 200 species of frogs have gone extinct since the 1970s .
Fungal Bd fungus has contributed to population declines in at least 500 species of frogs and toads.
The Western Hemisphere , especially Central and South America , has been hardest hit by the fungus.
In 2016 , nine new colonies out of the 12 reintroduced populations flourished.
Sierra Nevada yellow-legged frogs are recovering, but not how.
Researchers identify eight genes in a region of the genome called the major histocompatibility complex.
MHC genes play important roles in the immune system, and any of them could be giving frogs an edge against Bd.
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