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Study focuses on only carnivore with 'fingerprints'

A new study in the May issue of the Journal of Wildlife Management reports that scientists from the New York State Museum, Wildlife Conservation Society and other groups have teamed up with the New York State Department of Criminal Justice to developed a new technique that uses fingerprints to track the fisher--an elusive member of the weasel family, and the only carnivore species known to have unique fingerprints.

Fingerprints left behind at special tracking-boxes allow field biologists to identify which individual fisher had come in for the bait and, therefore, count the exact number of animals using an area. Scientists teamed with fingerprint experts at the New York State Department of Criminal Justice (DCJS) to develop this method, which is far simpler and less expensive compared to alternatives such as DNA fingerprinting.

Fisher prints differ from human fingerprints because they are made up of patterns of dots rather than ridges, so standard criminology software did not work. "We tried submitting fisher prints to the state's fingerprint database but it didn't pair up the prints well," says Richard Higgins, retired chief of the DCJS Bureau of Criminal Identification. "But looking at them side-by-side it was obvious when you had a match."

The fisher, an eight-pound member of the weasel family, is the only carnivore known to have fingerprints, which are also known from primates and koalas. Other species may also have unique patterns in their tracks that would help in counting their numbers in the wild.

"The few porcupine and opossum tracks we got had incredible patterns and will probably turn out to be unique with more study." says Dr. Roland Kays, curator of mammals at the State Museum, who co-authored the Journal article, along with Higgins and others.

"Identifying individuals allows us to actually count how many animals are in different areas, which is essential information for monitoring their conservatio
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Contact: John Delaney
jdelaney@wcs.org
718-220-3275
Wildlife Conservation Society
22-May-2007


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