Trends of persistent organic pollutants in American eel (Anguilla rostrata) from eastern Lake Ontario, Canada, and their potential effects on recruitment

التفاصيل البيبلوغرافية
العنوان: Trends of persistent organic pollutants in American eel (Anguilla rostrata) from eastern Lake Ontario, Canada, and their potential effects on recruitment
المؤلفون: Mehran Alaee, Michel Lebeuf, Peter V. Hodson, John M. Casselman, Meriem Raach, R. Stephen Brown, Steve Trottier, Jonathan D. Byer, Sean Backus
المصدر: The Science of the total environment. 529
سنة النشر: 2015
مصطلحات موضوعية: endocrine system, Anguilla rostrata, animal structures, Environmental Engineering, Biology, Dioxins, Polybrominated diphenyl ethers, Halogenated Diphenyl Ethers, Hydrocarbons, Chlorinated, Water Pollution, Chemical, Environmental Chemistry, Animals, Pesticides, Waste Management and Disposal, Chronic toxicity, Salvelinus, Ontario, Aquatic animal, Pesticide, biology.organism_classification, Anguilla, Pollution, Polychlorinated Biphenyls, Fishery, Trout, Lakes, Polybrominated Biphenyls, Female, Water Pollutants, Chemical, Environmental Monitoring
الوصف: This study reports the history of contamination of American eels (Anguilla rostrata) from eastern Lake Ontario (LO) by persistent organic pollutants (POPs). Three groups of 10 large female eels captured in eastern LO in each of 1988, 1998, and 2008 were analysed for polychlorinated dibenzo-p-dioxins and furans, polychlorinated biphenyls, several organochlorine pesticides, and polybrominated diphenyl ethers. Mean concentrations were up to 3-fold lower in 2008 compared to previous years. When combined with the results of previous studies, these data show that concentrations of POPs in American eels have declined exponentially since the early 1980s by an average of 9.1±1.9% per year. Toxic equivalent (TEQ) concentrations of dioxin-like compounds (DLCs) were calculated from fish toxic equivalency factors. Assuming an efficient transfer of DLCs to their eggs, egg TEQs prior to 2000 exceeded the threshold for chronic toxicity to embryos of European eels (Anguilla anguilla) and lake trout (Salvelinus namaycush) (4-5 pg/g ww of TEQ). These results suggest that embryotoxicity of maternally-derived DLCs from LO eels, historically a major contributor to the spawning stock of American eels, could have impaired the reproductive and recruitment success of the species.
تدمد: 1879-1026
URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c65e28c626b41b9061b68bd6344bac10
https://pubmed.ncbi.nlm.nih.gov/26022407
حقوق: CLOSED
رقم الأكسشن: edsair.doi.dedup.....c65e28c626b41b9061b68bd6344bac10
قاعدة البيانات: OpenAIRE