Brown pelican populations and pollutants in Texas 1975-1981
The Wilson Bulletin
By: Kirk A. King, D.R. Blankinship, E. Payne, A. J. Krynitsky, and Gary L. Hensler
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Abstract
The population status, reproductive success, and levels of environmental contaminants in brown pelicans (P. occidentalis) in Texas were studied from 1975 through 1981. Breeding populations increased from 18 pairs in 1975 to 57 pairs in 1981. All unhatched eggs salvaged for analyses of contaminant residues contained DDT metabolites. Mean DDE levels varied from 0.9 to 2.4 ppm and about 7% of the samples had residues that approached critical levels that could affect reproductive success. DDE levels did not decline from 1975 to 1981 and residues leveled off at higher values than those in South Carolina and Louisiana pelican populations. PCB [polychlorinated biphenyl] residues also remained stable. Endrin was detected only in 1975.
Suggested Citation
King, K.A., Blankinship, D., Payne, E., Krynitsky, A.J., and Hensler, G.L., 1985, Brown pelican populations and pollutants in Texas 1975-1981: The Wilson Bulletin, v. 97, no. 2, p. 201-214.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Brown pelican populations and pollutants in Texas 1975-1981 |
| Series title | The Wilson Bulletin |
| Volume | 97 |
| Issue | 2 |
| Year Published | 1985 |
| Language | English |
| Contributing office(s) | Patuxent Wildlife Research Center |
| Description | 201-214 |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Wilson Bulletin |
| First page | 201 |
| Last page | 214 |