在阿拉斯加的威廉王子湾和白令海，生活的北方象海豹（Eumetopias jubatus）体内多氯联苯的积累和母体转移。
Accumulation and maternal transfer of polychlorinated biphenyls in Steller Sea Lions (Eumetopias jubatus) from Prince William Sound and the Bering Sea, Alaska.
机构信息
Department of Molecular Biosciences and Bioengineering, University of Hawaii, 1955 East-West Road, Honolulu, HI 96822, USA.
National Institute of Agricultural Science and Technology, Rural Development Administration, Suwon 441-707, Republic of Korea.
出版信息
Environ Pollut. 2011 Jan;159(1):71-77. doi: 10.1016/j.envpol.2010.09.022.
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 [corrected] 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 7.4 pg/g lw in the kidney, liver, and blubber samples, respectively. The mean TEQ in placentae was 8 pg/g lw. Total PCBs concentrations (2.6-7.9 μg/g lw) in livers of some males were within a range known to cause physiological effects, further [corrected] suggesting the possibility of adverse effects on this stock.
过去 30 年来，北太平洋西部的斯特勒海狮（Eumetopias jubatus）数量减少了约 80%。这导致该海狮种群于 1997 年被列为濒危物种。化学污染是造成这种情况的几个原因之一。在本研究中，从塔堤雷克（威廉王子湾）和圣保罗岛（白令海）的雄性海狮组织以及阿留申群岛的胎盘中确定了 145 种个体多氯联苯。所有样本中均含有大量的多氯联苯 90/101、118 和 153。肾脏、肝脏和鲸脂样本中的平均毒性当量（TEQ）分别为 2.6、4.7 和 7.4 pg/g lw。胎盘的平均 TEQ 为 8 pg/g lw。一些雄性肝脏中的总多氯联苯浓度（2.6-7.9 μg/g lw）处于已知会引起生理效应的范围内，这进一步表明对该种群可能产生不利影响。
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