Organic halogenated contaminants in mother-fetus pairs of harbor seals (Phoca vitulina richardii) from Alaska, 2000-2002.

Journal of Hazardous Materials
Dongli WangQing X Li

Abstract

This study measured organochlorine pesticides (OCPs) including hexachlorocyclohexanes (HCHs), hexachlorobenzene (HCB), heptachlor and dichlorodiphenyltrichloroethanes (DDTs), polychlorinated biphenyls (PCBs), polychlorinated naphthalenes (PCNs) and polybrominated diphenyl ethers (PBDEs) in tissues of six mother-fetus pairs of harbor seals that were hunted for subsistence in Alaska waters of the Northern Pacific Ocean. These data suggest that significant amounts of these contaminants were transferred from mother harbor seals to fetuses during pregnancy and distributed among fetal organs. The tissue distribution depended on the chemical groups, the specific compounds in the groups and the target organs. Concentration profiles of ∑OCPs, ∑PCBs, ∑PCNs and ∑PBDEs were remarkably similar among maternal blubber, liver, and placenta, fetal blubber, and liver (except for HCHs), possibly indicating that the placenta did not serve as a barrier for all of the compounds analyzed. DDTs, HCB, HCHs, PCBs and PBDEs could penetrate the placenta and accumulate in the blubber of the fetus in utero, while HCHs, PCBs and PBDEs penetrated the placenta and accumulated more preferentially in the fetal liver than in the fetal brain in comparison with DDT...Continue Reading

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Citations

Jan 18, 2015·Marine Pollution Bulletin·Liesbeth WeijsAdrian Covaci
Oct 4, 2016·Journal of Zoo and Wildlife Medicine : Official Publication of the American Association of Zoo Veterinarians·Kendra L BauerPamela Tuomi
Nov 10, 2020·Journal of Hazardous Materials·Ali Ranjbar JafarabadiTiziana Cappello

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