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Organochlorine and metal residues in royal terns nesting on the central Texas coast

Colonial Waterbirds

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Abstract

Royal Tern (Sterna maxima) eggs collected from two study areas on the central Texas coast in 1978 contained organochlorine residues at levels below those known to have adverse effects on avian reproduction and survival. Residues of zinc, copper, selenium, and arsenic were present at what appeared to be background levels. Mercury residues were elevated. Average organochlorine and metals residues did not differ significantly between an agricultural-industrial study area and a less developed control area. The thickness of eggshells collected in 1978 was statistically similar to the thickness of shells collected before 1943. There was a significant improvement in mean eggshell thickness from 1970 to 1978 with a corresponding decline in DDE and PCB residues.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Organochlorine and metal residues in royal terns nesting on the central Texas coast
Series title:
Colonial Waterbirds
Volume
5
Issue:
1
Year Published:
1982
Language:
English
Contributing office(s):
Patuxent Wildlife Research Center
Description:
177 (abstract)
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Colonial Waterbirds
First page:
177 (abs)