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Northern Alabama colonies of the endangered grey bat Myotis grisescens: Organochlorine contamination and mortality

Biological Conservation

doi:10.1016/0006-3207(88)90114-0
By:
, , and

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Abstract

From 1976 to 1986, dead and dying grey bats Myotis grisescens and grey bat guano were collected from caves along the Tennessee River in northern Alabama to determine the possible role of organochlorine chemicals.sbd.in particular wastes from a former DDT manufacturing plant near Huntsville.sbd.in the mortalities. Concentrations of chemical residues in brains were less than known lethal levels: certain observations and analyses did indicate the possibility of past organochlorine-induced bat deaths. Levels of contaminants in bats declined slowly during the 10-year sampling period, but heavy residue burdens persist. The high ratio of DDD to DDE in residue from the former DDT plant made them identifiable as far as 140 km downriver. Grey bats concentrated chemical rsidues to higher levels and demonstrated the presence of these residues over much greater distances than did red-winged blackbirds Agelaius phoeniceus. Grey bats may be the most sensitive indicator available for monitoring the contamination from this former DDT manufacturing site.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Northern Alabama colonies of the endangered grey bat Myotis grisescens: Organochlorine contamination and mortality
Series title:
Biological Conservation
Volume
43
Issue:
3
Year Published:
1988
Language:
English
Publisher:
U.S. Fish and Wildlife Service
Contributing office(s):
Patuxent Wildlife Research Center
Description:
213-225
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Biological Conservation
First page:
213
Last page:
225
Number of Pages:
13