Technical Summary and Supporting Information for an Emergency Assessment of the Tri-colored Bat Perimyotis subflavus
Between 5.7 and 6.7 million bats, of several species, but mainly Little Brown Myotis, are estimated to have died in the last 6 years in the northeastern United States and eastern Canada. Tri-colored Bats are relatively rare in Canada and the response to White-nose Syndrome (WNS) by Little Brown Myotis is used as a surrogate for the response by Tri-colored Bat when information on Tri-colored is lacking. Mortality associated with White-nose Syndrome (WNS), caused by a fungus likely from Europe, has reduced populations of Little Brown Myotis by >75% in infected hibernacula, and this species has been modelled to be functionally extirpated (<1% population) in 16 years in the northeastern U.S. (Frick et al. 2010). There is strong evidence that the same result will occur in the Canadian population of Tri-colored Bat; significant declines and mortality events were recorded in Canada in 2011 and susceptibility to WNS is expected to be similar across most of Canada.
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- "Technical Summary and Supporting Information for an Emergency Assessment of the Tri-colored Bat Perimyotis subflavus" (2012-02-27) (PDF format, 641.12 KB)
c/o Canadian Wildlife Service
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