Organochlorine pesticides and polychlorinated biphenyls in California sea lions (Zalophus californianus californianus) from the Gulf of California, México.
We report concentrations of several classes of organochlorines (OCs) in the blubber of California sea lions (Zalophus californianus) from the Gulf of California. Summed OC levels measured in 34 wild-ranging animals were, in general, lower than those previously reported in sea lions from the eastern Pacific. The rank order of OCs was SigmaDDTs (mean=3400 ng g(-1 ) lipid weight [lw]) > SigmaPCBs (1400 ng g(-1 ) lw) > SigmaHCHs (50 ng g(-1 ) lw) >or= SigmaCHLORs (46 ng g(-1 ) lw). The most abundant OC measured was the DDT metabolite, p,p'-DDE. No significant differences in OC profiles were found between genders or rookeries. Although the mean concentrations of OCs measured in adult males and females were similar, only adult females had significantly higher (p<0.05) mean blubber concentrations of summation SigmaDDTs and summation SigmaHCHs than pups.
Postgraduate Program in Marine Sciences and Limnology, National Autonomous University of México, A.P. 70-305, Ciudad Universitaria, 04510 México, DF, Mexico. carlosalni@gmail.com
Carlos Alberto
CA
Niño-Torres
Susan C
SC
Gardner
Tania
T
Zenteno-Savín
Gina M
GM
Ylitalo
D000273:Adipose Tissue / Q000737:chemistry / Q000378:metabolism*; D000818:Animals; D004784:Environmental Monitoring; D005260:Female; D006843:Hydrocarbons, Chlorinated / Q000032:analysis* / Q000493:pharmacokinetics; D008297:Male; D008800:Mexico; D010140:Pacific Ocean; D010575:Pesticides / Q000032:analysis* / Q000493:pharmacokinetics; D011078:Polychlorinated Biphenyls / Q000032:analysis* / Q000493:pharmacokinetics; D046070:Sea Lions / Q000378:metabolism*; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000493:pharmacokinetics
D006843:Hydrocarbons, Chlorinated; D010575:Pesticides; D014874:Water Pollutants, Chemical; D011078:Polychlorinated Biphenyls