期刊
MARINE POLLUTION BULLETIN
卷 56, 期 12, 页码 1973-1982出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2008.08.011
关键词
California sea lion; Pacific harbor seal; Northern elephant seal; Organochlorines; Dichlorodiphenyltrichloroethane; Polychlorinated biphenyls; DDT; PCBs; Southern California Bight; Bioaccumulation
资金
- CSULB Graduate Research Fellowship
- Boeing-College of Natural Sciences and Mathematics Graduate Fellowship
- Richard B. Loomis Award at California State University Long Beach
- SCTC Marine Biology Education Foundation scholarship
Highly industrialized areas, such as the Southern California Bight, often have high levels of contaminants in marine sediments, which can cause chronic exposure to organisms long after their use has ceased. tDDT and tPCB were analyzed in the blubber of 145 stranded pinnipeds that died at local marine mammal centers between 1994 and 2006. Resident species (California sea lion and Pacific harbor seal) had significantly higher concentrations of tDDT and tPCB than the transient species (northern elephant seal). Adult female California sea lions had significantly lower concentrations of tDDT and tPCB than pups, yearlings, and adult males. Concentrations of both tDDT and tPCB in California sea lions significantly declined over time, but did not change in northern elephant seals. Current concentrations of tDDT and tPCB in California sea lions and harbor seals are among the highest values reported worldwide for marine mammals and exceed those reported to cause adverse health effects. (C) 2008 Elsevier Ltd. All rights reserved.
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