Maternal-to-fetal transfer and concentration profiles of PCB congeners for Steller sea lions (Eumetopias jubatus) from Hokkaido, Japan

作者：Kubo Keiko; Yamaguchi Katsuyuki^*; Ishinazaka Tsuyoshi; Yamada Wakana; Hattori Kaoru; Tanaka Shunitz

来源：Marine Pollution Bulletin, 2014, 78(1-2): 165-172.

DOI：10.1016/marpolbul.2013.10.047

• PCBs
• Congeners
• Steller sea lion
• Fetus
• Maternal-to-fetal transfer
• Hokkaido, Japan

The concentrations of PCB congeners in the blubber and liver of mother Steller sea lions (Eumetopias jubatus; SSLs) and their fetuses from the coast of Hokkaido, Japan in 2008, 2010 and 2012 were analyzed by HRGC-HRMS, in order to elucidate PCB congener profiles and maternal-to-fetal transfer of PCBs in SSLs. Sigma PCBs in the fetuses were 1400 +/- 660 (the mean +/- SD) ng/g-fat in the blubber and 570 +/- 320 ng/g-fat in the liver, respectively. There was a concern that SSLs had been contaminated by PCBs during the fetal period. The concentrations of the major congeners in the blubber and liver were a correlation between the fetus and mother (blubber: r = 0.9934, liver: r = 0.8616; P <= 0.05). The results indicated that PCBs in the fetuses came from the mothers. #177 and #199 showed no correlations between the fetus and the mother in the blubber and liver. This indicated a selective capture by some natural protector such as the placenta.

• 出版日期2014-1-15