title: Trophic magnification of Dechlorane Plus in the marine food webs of Fildes Peninsula in Antarctica.
abstract: The food web composition, assimilation efficiency of Dechlorane Plus (DP) in food web components, and even extrinsic conditions can affect the trophic biomagnification potentials of DP isomers in food webs. Antarctica ecological system is characterized by the presence of few consumers and simple trophic levels (TLs), which are crucial in discussing the behavior of contaminants. To assess the biomagnification potential of DP in the Antarctic food web, nine representative species were sampled and analyzed from the Fildes Peninsula. Results showed the DP concentrations ranged from 0.25ngg-1to 6.81ngg-1lipid weight in Antarctic biota and the concentrations of anti-DP and syn-DP showed significantly positive correlations with TLs (p<0.05, ra=0.85; rs=0.81, respectively), suggesting that syn-DP and anti-DP underwent biomagnification and the biomagnification ability of anti-DP was higher than that of syn-DP. The anti-DP fraction (anti-DP/∑DP) (ƒanti=0.23-0.53) of the organisms was lower than that of commercial products (ƒanti=0.68), demonstrating ƒantiwas changed during long-range atmospheric transport or stereoselection enrichment through the food web. Furthermore, based on food web magnification factors (FWMF) comparison between DP and polychlorinated biphenyls (PCBs), the biomagnification potential of DP was found to be similar to that of highly chlorinated PCBs.
authors.affiliation: National Marine Environmental Monitoring Center, Dalian, Liaoning 116023, China. Electronic address: gsna@nmemc.org.cn.
authors.forename: Guangshui
authors.initials: G
authors.lastname: Na
authors.affiliation: Shanghai Ocean University, Shanghai 201306, China.
authors.forename: Yao
authors.initials: Y
authors.lastname: Yao
authors.affiliation: National Marine Environmental Monitoring Center, Dalian, Liaoning 116023, China.
authors.forename: Hui
authors.initials: H
authors.lastname: Gao
authors.affiliation: National Marine Environmental Monitoring Center, Dalian, Liaoning 116023, China.
authors.forename: Ruijing
authors.initials: R
authors.lastname: Li
authors.affiliation: National Marine Environmental Monitoring Center, Dalian, Liaoning 116023, China.
authors.forename: Linke
authors.initials: L
authors.lastname: Ge
authors.affiliation: Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, USA.
authors.forename: Ivan A
authors.initials: IA
authors.lastname: Titaley
authors.affiliation: Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, USA.
authors.forename: Lisandra
authors.initials: L
authors.lastname: Santiago-Delgado
authors.affiliation: Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, USA; Department of Environmental and Molecular Toxicology, Oregon State University, Corvallis, Oregon 97331, USA.
authors.forename: Staci L
authors.initials: SL
authors.lastname: Massey Simonich
mesh_terms: D000864:Antarctic Regions; D004784:Environmental Monitoring; D005411:Flame Retardants / Q000032:analysis*; D020387:Food Chain; D006843:Hydrocarbons, Chlorinated / Q000032:analysis*; D011078:Polychlorinated Biphenyls / Q000032:analysis; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D005411:Flame Retardants; D006843:Hydrocarbons, Chlorinated; D014874:Water Pollutants, Chemical; D011078:Polychlorinated Biphenyls
keywords: Dechlorane Plus; Food web; Stereoselection; The Antarctic; Trophic magnification