A fungus that causes White-nose Syndrome in bats has been detected in Louisiana.
According to the Louisiana Department of Wildlife and Fisheries, under certain environmental conditions, the fungus can be deadly to bats.
The fungus that causes white-nose syndrome in bats, was detected in Louisiana for the first time in samples collected from Brazilian free-tailed bats in Natchitoches Parish during surveillance sampling in 2021. The disease is not contagious to humans or other animals.
White-nose syndrome was first detected near Albany, New York, in Feb. 2006. LDWF says that since initial detection, the disease has resulted in the deaths of more than 6 million bats in North America. WNS has been found in 37 states and seven Canadian provinces.
LDWF says bats are susceptible to infection by the fungus during hibernation when body temperature decreases. The cold-loving fungus invades their skin, leading to dehydration and starvation along with other signs of illness. Infected bats may awaken from hibernation more frequently and exhibit unusual behaviors such as flying outside during the day or clustering at hibernating openings. The increased activity levels reduce or completely deplete fat reserves critical for hibernation, resulting in death.
LDWF monitors known bat hibernation and roost locations to conduct annual Pd and WNS surveillance. The samples from Natchitoches Parish were collected as part of routine monitoring.
No evidence of the disease WNS has been observed in the state, they say.
State wildlife officials are closely monitoring WNS and susceptible bat colonies throughout the state as part of their ongoing work to conserve vulnerable species.
Louisiana is home to 12 bat species, of which three are susceptible to WNS and four are susceptible to the fungus. Due to warmer winter temperatures in Louisiana, which allow the bats to feed during the winter months, impacts of Pd may not be as severe as in colder northern latitudes.
Laboratory testing is required to confirm the presence of Pd. WNS can be identified by clinical symptoms, however, laboratory testing is required for confirmation the disease.
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