当前位置： SCI文献检索 > CHEMOSPHERE期刊下所有文献 > Accumulation of hydroxylated polychlorinated biphenyls (OH-PCBs) and implications for PCBs metabolic capacities in three porpoise species.

Accumulation of hydroxylated polychlorinated biphenyls (OH-PCBs) and implications for PCBs metabolic capacities in three porpoise species.

Abstract：

:The present study investigated polychlorinated biphenyls (PCBs) and hydroxylated metabolites of PCBs (OH-PCBs) in blood from three porpoise species: finless porpoises (Neophocaena phocaenoides), harbor porpoises (Phocoena phocoena), and Dall's porpoises (Phocoenoides dalli). The porpoises were found stranded or were bycaught along the Japanese coast. Concentrations of OH-PCB were the highest in Dall's porpoises (58pgg(-1) wet wt), second highest in finless porpoises (20pgg(-1) wet wt), and lowest in harbor porpoises (8.3pgg(-1) wet wt). The concentrations in Dall's porpoises were significantly higher than the concentrations in finless porpoises and harbor porpoises (p<0.05 and p<0.01, respectively). There was a positive correlation between PCB and OH-PCB concentrations (r=0.67, p<0.001), suggesting the possible concentration-dependent induction of CYP enzymes. The three porpoise species may have exceptionally low metabolic capacities compared with other marine and terrestrial mammals, because low OH-PCB/PCB concentration ratios were found, which were 0.0016 for Dall's porpoises, 0.0013 for harbor porpoises, and 0.00058 for finless porpoises. Distinct differences in the OH-PCB congener patterns were observed for the three species, even though they are taxonomically closely related.

journal_name

Chemosphere

journal_title

Chemosphere

authors

Ochiai M,Nomiyama K,Isobe T,Mizukawa H,Yamada TK,Tajima Y,Matsuishi T,Amano M,Tanabe S

doi

10.1016/j.chemosphere.2013.04.024

subject

Has Abstract

pub_date

2013-08-01 00:00:00

pages

803-10

issue

7

eissn

0045-6535

issn

1879-1298

pii

S0045-6535(13)00622-X

journal_volume

92

pub_type

杂志文章

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