|
 Back
Document Title:
Assessment of exposure risk of polychlorinated biphenyls to interior least terns (Sterna antillarum)
AUTHOR(S):
Brian C Sanchez Colleen A Caldwell
VOLUME:
27
ISSUE:
3
PAGES:
617 - 622
PUBLICATION DATE:
March 2008
ABSTRACT:
Risk of polychlorinated biphenyl (PCB) exposure and effects were assessed for a colony of federally endangered interior least terns (Sterna antillarum) nesting on the Bitter Lake National Wildlife Refuge (NM, USA). The colony feeds from an area on the Refuge (Hunter Marsh/Oxbow Complex) wherein fish with elevated concentrations of total PCBs have been documented. Concentrations of total PCBs in whole fish averaged 0.94 mg/kg with a maximum concentration of 2.77 mg/kg, wet weight. Estimated daily PCB intake rates by adult birds throughout their 180-d breeding season ranged from <0.01 mg/kg/d to 0.98 mg/kg/d, yielding hazard quotients that ranged from 0.01 to 21.68. Polychlorinated biphenyls pose a moderate risk to the colony of interior least terns that breed at the Bitter Lake National Wildlife Refuge, but the exposure rate is not likely to threaten their overall breeding success.
PUBLICATION:
Environmental Toxicology and Chemistry
PUBLISHED BY:
SETAC - Society of Environmental Toxicology and Chemistry
DOCUMENT LINK:
http://onlinelibrary.wiley.com/doi/10.1897/07-172.1/abstract, 80 KB
NOTE: This link will take you to a site outside of the U.S. Fish and Wildlife Service.
We do not control the content or policies of the site you are about to visit. You should always check site policies before providing personal information or reusing content.
|
