Mortality of Little Brown Bats (Myotis lucifugus carissima) Naturally Exposed to Microcystin-LR

ABSTRACT We describe a die-off of little brown bats (Myotis lucifugus carissima) associated with acute intoxication with microcystin-LR in 2016 at Scofield Reservoir in Utah, US. High levels of this cyanotoxin in water from the reservoir and gastrointestinal content of bats supported this diagnosis.