Introduced diseases and native diseases outside of their natural range can contribute to the decline of native species either through direct mortality or by increasing species' vulnerability to other limiting factors.

The emergence of white-nose syndrome, a fungal disease that is decimating hibernating bat populations in the eastern United States, poses a potential threat to northern myotis populations in Minnesota.

Northern Myotis (Myotis septentrionalis)


Ten reasons why species become rare

Habitat loss and degradation Invasive species and competition Pollution Habitat specificity Persecution and exploitation

Peripheral populations Vunerable characteristics Relict populations Disease Global climate change

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