CUMBERLAND — Several dead bats and more than 200 visibly affected bats were found during a survey conducted in an Allegany County cave near Cumberland last week.
The bats observed during the survey exhibited a white fungus concentrated around their muzzle that is consistent with white-nose syndrome and, if confirmed, this will be Maryland’s first documented occurrence of the disease.
“Many biologists suspect that the WNS fungus, Geomyces destructans, is a nonnative pathogen recently introduced to the United States,” said Dana Limpert, Maryland Department of Natural Resources Wildlife and Heritage Service ecologist and bat expert. “Fortunately WNS is not known to be harmful to humans. Unfortunately there is no known cure for bats infected with the disease, so our priority is preventing the spread of this deadly syndrome to other bat caves or hibernacula.”
WNS, likely spread by contact among bats and their environment, is a disease suspected of killing more than a million bats in the northeastern United States. Bat carcasses and fungal samples from the Cumberland cave were sent to the National Wildlife Health Center in Madison, Wis., for verification. Positive laboratory confirmation of the fungus is expected to take several weeks.
The disease has been documented in caves and mines where large numbers of bats hibernate. It has not been found in bats that use buildings or other manmade structures. Based on its distribution in the northeastern states, WNS in Maryland is only expected to occur in the mountainous parts of the state where caves occur. It is not expected to be found in metropolitan environments.
“It is unclear how this cave became infected but there is evidence from other locations in the Northeast that cavers may be a source for spreading the WNS fungus,” said Dan Feller, the DNR ecologist who discovered the dead bats. “Cavers are generally responsible outdoor enthusiasts, but contaminated clothing and gear may inadvertently transmit spores into new areas, potentially impacting vital bat populations. We will begin immediately to elicit support from the local caving community to help us limit the spread of this disease.”
WNS was first discovered in a cave near Albany, N.Y., in February 2006. It has been confirmed or suspected in 10 states in the eastern U.S. from New Hampshire to Tennessee. Since 2006, biologists across the Northeast have reported as much as a 100 percent decline in hibernating bats in affected caves.
The U.S. Fish and Wildlife Service requests that cavers refrain from caving in all WNS-affected states and adjoining states. And cavers should refrain from caving anywhere during the hibernation period, generally September through May, to minimize disturbance and mortality to bats.
DNR biologists, following strict protocols established by the Northeastern WNS Working Group, will continue their monitoring efforts to determine if any other hibernation sites are affected in the state. Additional information on white-nose syndrome can be found at http://dnr.maryland.gov/wildlife/bats/nhpbatdisease.asp.
Local News
Bat disease suspected in Cumberland area cave
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