Presence of organochlorine pollutants in fat and scats of pinnipeds from the Antarctic Peninsula and South Shetland Islands, and their relationship to trophic position
| Autor: | Cristóbal Galbán-Malagón, E.G. Vergara, Gustavo Chiang, Kelly R. Munkittrick, Ricardo Barra, V. Hernández |
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| Rok vydání: | 2019 |
| Předmět: |
Food Chain
Environmental Engineering 010504 meteorology & atmospheric sciences Heptachlor Antarctic Regions Zoology 010501 environmental sciences Biology 01 natural sciences chemistry.chemical_compound Blubber Hydrocarbons Chlorinated Animals Environmental Chemistry Aldrin Waste Management and Disposal 0105 earth and related environmental sciences Trophic level Isotope analysis Methoxychlor Pesticide Pollution Caniformia chemistry 13. Climate action Endrin Water Pollutants Chemical Environmental Monitoring |
| Zdroj: | Science of The Total Environment. 685:1276-1283 |
| ISSN: | 0048-9697 |
| DOI: | 10.1016/j.scitotenv.2019.06.122 |
| Popis: | Antarctic is still considered one of the few pristine areas in the globe. Despite this, several studies have shown phased out organic pollutants are present in several environmental abiotic and biological compartments. This study, based on blubber and fecal samples collected from five species of Antarctic pinnipeds assessed the relationship between organochlorine pesticides (OCs) levels and trophic characterization using stable isotope analysis (δ 13 C & δ 15 N). The prevailing pollutants found in blubber were HCHs, HCB, Heptachlor and Aldrin (100–500 ng g −1 l.w.). We also report the presence of Endrin, Endosulfan and Methoxychlor in feces which have not been detected at these magnitudes before in the same species and could be suggesting a detoxification mechanism. All the species tend to high trophic positions (3.4–4.9), but with considerable variation in trophic niche and organochlorine pesticides concentrations per sampling site. This finding suggests that differences in pesticide levels in individuals are associated to foraging ecology. |
| Databáze: | OpenAIRE |
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