Accumulation and maternal transfer of polychlorinated biphenyls in Steller Sea Lions (Eumetopias jubatus) from Prince William Sound and the Bering Sea, Alaska

Accumulation and maternal transfer of polychlorinated biphenyls in Steller Sea Lions (Eumetopias... The western stock of the Steller sea lion (Eumetopias jubatus) in the northern Pacific Ocean has declined by approximately 80% over the past 30 years. This led to the listing of this sea lion population as an endangered species in 1997. Chemical pollution is a one of several contributing causes. In the present study, 145 individual PCBs were determined in tissues of male sea lions from Tatitlek (Prince William Sound) and St. Paul Island (Bering Sea), and placentae from the Aleutian Islands. PCBs 90/101, 118, and 153 were abundant in all the samples. The mean toxic equivalents (TEQ) were 2.6, 4.7 and 7.4pg/g lw in the kidney, liver, and blubber samples, respectively. The mean TEQ in placentae was 8pg/g lw. Total PCBs concentrations (2.67.9g/g lw) in livers of some males were within a range known to cause physiological effects. Further suggesting the possibility of adverse effects on this stock. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Environmental Pollution Elsevier

Accumulation and maternal transfer of polychlorinated biphenyls in Steller Sea Lions (Eumetopias jubatus) from Prince William Sound and the Bering Sea, Alaska

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Publisher
Elsevier
Copyright
Copyright © 2010 Elsevier Ltd
ISSN
0269-7491
D.O.I.
10.1016/j.envpol.2010.09.022
Publisher site
See Article on Publisher Site

Abstract

The western stock of the Steller sea lion (Eumetopias jubatus) in the northern Pacific Ocean has declined by approximately 80% over the past 30 years. This led to the listing of this sea lion population as an endangered species in 1997. Chemical pollution is a one of several contributing causes. In the present study, 145 individual PCBs were determined in tissues of male sea lions from Tatitlek (Prince William Sound) and St. Paul Island (Bering Sea), and placentae from the Aleutian Islands. PCBs 90/101, 118, and 153 were abundant in all the samples. The mean toxic equivalents (TEQ) were 2.6, 4.7 and 7.4pg/g lw in the kidney, liver, and blubber samples, respectively. The mean TEQ in placentae was 8pg/g lw. Total PCBs concentrations (2.67.9g/g lw) in livers of some males were within a range known to cause physiological effects. Further suggesting the possibility of adverse effects on this stock.

Journal

Environmental PollutionElsevier

Published: Jan 1, 2011

References

  • Concentration of chlorinated hydrocarbons and heavy metals in Alaska Arctic marine mammals
    Becker, P.R.
  • Ecological fate, effects and prospects for the elimination of environmental polychlorinated biphenyls (PCBs)
    Hooper, S.W.; Pettigrew, C.A.; Sayler, G.S.
  • Persistent organochlorines in Steller sea lion (Eumetopias jubatus) from the bulk of Alaska and the Bering Sea, 19761981
    Lee, J.S.; Tanabe, S.; Umino, H.; Tatsukawa, R.; Loughlin, T.R.; Calkins, D.C.
  • Distribution of polychlorinated biphenyls in marine species from French Shoals, North Pacific Ocean
    Miao, X.S.; Swenson, C.; Woodward, L.A.; Li, Q.X.
  • Organochlorine contaminants in endangered Steller sea lion pups (Eumetopias jubatus) from western Alaska and Russian far east
    Myers, M.J.; Ylitalo, G.M.; Krahn, M.M.; Boyd, D.; Calkins, D.; Burkanov, V.; Atkinson, S.
  • The expression and regulation of drug metabolism in human placenta
    Pasanen, M.
  • Organochlorines in harbor seal (Phoca vitulina) tissues from the northern Gulf of Alaska
    Wang, D.; Atkinson, S.; Hoover-Miller, A.; Lee, S.E.; Li, Q.X.

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