Environmental contaminants in bald eagle eggs
Journal of Raptor Research
Abstracts of presentations made at the annual meeting of the Raptor Research Foundation, Inc., held at Tulsa, Oklahoma, on 6-10 November 1991
By: Stanley N. Wiemeyer, C.M. Bunck, and C. J. Stafford
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Abstract
Bald Eagle eggs (1968-84) were analyzed for organochlorine pesticides, PCBs and mercury. DDE declined in WI, ME and the Chesapeake Bay. DDE was most closely related to shell thickness and reproduction at sampled breeding areas. Sixteen ppm DDE (wet weight) was associated with 15% shell thinning. Reproduction was normal when eggs at sampled breeding areas contained <3.6 ppm DDE; success was nearly halved between 3.6 and 6.3 ppm and halved again when concentrations exceeded 6.3 ppm. Other contaminants were associated with poor reproduction and eggshell thinning; however, their impact appeared secondary to that of DDE.
Suggested Citation
Wiemeyer, S.N., Bunck, C., Stafford, C.J., 1991, Environmental contaminants in bald eagle eggs: Journal of Raptor Research, v. 25, no. 4.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Environmental contaminants in bald eagle eggs |
| Series title | Journal of Raptor Research |
| Volume | 25 |
| Issue | 4 |
| Year Published | 1991 |
| Language | English |
| Contributing office(s) | Patuxent Wildlife Research Center |
| Description | 162 (abstract) |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Journal of Raptor Research |
| First page | 162 (abs) |