Organochlorine residues in females and nursing young of the big brown bat (Eptesicus fuscus)
Bulletin of Environmental Contamination and Toxicology
By: D. R. Clark Jr. and T. G. Lamont
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Abstract
Carcasses and brains of 18 big brown bats from Gaithersburg, Maryland, were analyzed for residues of organochlorine insecticides and PCB's. Eleven bats were adult females, and six of these had seven nursing young associated with them....Young bats resembled their parents in microgram amounts of PCB and DDE present in carcasses. However, concentrations of chemicals (expressed as ppm) were significantly higher in young. Brains of three young contained detectable residues of PCB and DDE....Younger adult females contained higher levels of PCB and DDE than did older ones. However, among the oldest females, amounts appeared to begin rising again. This pattern resembles that in free-tailed bats from Bracken Cave, Texas, but differs from the continuous linear decline seen in a Laurel, Maryland population of big brown bats, in which initial levels among younger females were higher than those in the Gaithersburg population....DDE was transferred from female to young more readily than was PCB by nursing. Five of 51 neonate big brown bats from the Laurel population were thought to have been born dead because of residues of PCB that were transferred across the placenta. Present data show that even greater amounts of PCB may be transferred to young by lactation and nursing.
Suggested Citation
Clark, D.R., and Lamont, T.G., 1976, Organochlorine residues in females and nursing young of the big brown bat (Eptesicus fuscus): Bulletin of Environmental Contamination and Toxicology, v. 15, no. 1, p. 1-8, https://doi.org/10.1007/BF01686188.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Organochlorine residues in females and nursing young of the big brown bat (Eptesicus fuscus) |
| Series title | Bulletin of Environmental Contamination and Toxicology |
| DOI | 10.1007/BF01686188 |
| Volume | 15 |
| Issue | 1 |
| Year Published | 1976 |
| Language | English |
| Publisher | Springer |
| Contributing office(s) | Patuxent Wildlife Research Center |
| Description | 8 p. |
| First page | 1 |
| Last page | 8 |