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- W4200336779 endingPage "128115" @default.
- W4200336779 startingPage "128115" @default.
- W4200336779 abstract "Accumulation of organochlorine pesticides (OCPs) in Antarctic krill (Euphausia superba), a keystone species in the Southern Ocean, is potentially harmful to the Antarctic ecosystem and human health. In the current study, we collected E. superba specimens (including muscle and carapace tissues) from Bransfield Strait in northern Antarctic Peninsula and South Georgia to analyze the profile, influencing factors and mechanisms of OCPs bioaccumulation in them. Results indicated that the biological traits (δ13C, δ15N and lipid contents) of krill were significantly affected by habitat. There may exist growth dilution of OCPs in Antarctic krill and no fresh OCPs input in Antarctica, except for endosulfan I. Based on lipid-normalized concentrations, no significant differences were observed between the two regions at most sampling sites. However, OCP levels showed tissue and sex dependence. Boosted regression trees (BRTs) and partial least squares structural equation models (PLS-SEMs) were built to better investigate the main factors affecting the bioaccumulation of OCPs. Lipid content, negatively correlated with OCP levels, was the main factor. In vitro silicon modeling indicated that CYP3A4 metabolism capacity in krill contributed to the OCP residues except for endosulfan I. The results of this study expand current knowledge of OCPs in Antarctic marine biota, as well as their influencing factors and potential mechanisms." @default.
- W4200336779 created "2021-12-31" @default.
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- W4200336779 date "2022-03-01" @default.
- W4200336779 modified "2023-10-18" @default.
- W4200336779 title "Bioaccumulation of organochlorine pesticides in Antarctic krill (Euphausia superba): Profile, influencing factors, and mechanisms" @default.
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- W4200336779 doi "https://doi.org/10.1016/j.jhazmat.2021.128115" @default.
- W4200336779 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/34959217" @default.
- W4200336779 hasPublicationYear "2022" @default.
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