title: Sex-dependent accumulation and maternal transfer of Dechlorane Plus flame retardant in fish from an electronic waste recycling site in South China.
abstract: Knowledge is limited on sex-related accumulation and maternal transfer of Dechlorane Plus (DP) flame retardant in wildlife. In the present study, DP isomers were examined in liver and eggs of two fish species, northern snakehead and crucian carp, from an electronic waste recycling site in China. Hepatic ∑DP (sum of syn- and anti-DP) concentrations ranged 260-1920 ng/g lipid in northern snakehead and 340-1670 ng/g in crucian carp, with significantly higher levels in males relative to females. ∑DP concentrations ranged 4.6-310 ng/g lipid in the eggs, demonstrating their maternal transfer in the female fish. The mean eggs to liver concentration ratios (E/L ratios) were 0.03 and 0.03 in northern snakehead, and 0.26 and 0.25 in crucian carp, for syn- and anti-DP, respectively. A significantly negative correlation between the E/L ratios and the hepatic DP concentrations was observed, indicating a dose-dependent maternal transfer of DP isomers in the fish.
authors.affiliation: State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China.
authors.forename: Jiang-Ping
authors.initials: JP
authors.lastname: Wu
authors.forename: Ya-Zhe
authors.initials: YZ
authors.lastname: She
authors.forename: Ying
authors.initials: Y
authors.lastname: Zhang
authors.forename: Ying
authors.initials: Y
authors.lastname: Peng
authors.forename: Ling
authors.initials: L
authors.lastname: Mo
authors.forename: Xiao-Jun
authors.initials: XJ
authors.lastname: Luo
authors.forename: Bi-Xian
authors.initials: BX
authors.lastname: Mai
mesh_terms: D000818:Animals; D002681:China; D059029:Electronic Waste; D004784:Environmental Monitoring; D005260:Female; D005399:Fishes / Q000378:metabolism*; D005411:Flame Retardants / Q000032:analysis / Q000378:metabolism*; D006843:Hydrocarbons, Chlorinated / Q000032:analysis / Q000378:metabolism*; D008099:Liver / Q000378:metabolism; D008297:Male; D011083:Polycyclic Compounds / Q000032:analysis / Q000378:metabolism*; D012737:Sex Factors; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000378:metabolism*
chemical_list: D005411:Flame Retardants; D006843:Hydrocarbons, Chlorinated; D011083:Polycyclic Compounds; D014874:Water Pollutants, Chemical; C526360:dechlorane plus