Maternal transfer of dioxin-like compounds in artificially matured European eels
| Autor: | Marko Freese, Ralf Ebinghaus, Jan-Dag Pohlmann, Mehran Alaee, Lasse Marohn, Hendrik Wolschke, Jonathan D. Byer, Roxana Sühring, Reinhold Hanel |
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| Rok vydání: | 2017 |
| Předmět: |
Male
0106 biological sciences Muscle tissue Polychlorinated Dibenzodioxins Wet weight Health Toxicology and Mutagenesis 010501 environmental sciences Biology Dioxins Toxicology Mass spectrometry 01 natural sciences Gas Chromatography-Mass Spectrometry medicine Animals Toxicokinetics Furans 0105 earth and related environmental sciences Eels 010604 marine biology & hydrobiology General Medicine Anguilla Polychlorinated Biphenyls Pollution Early life medicine.anatomical_structure Maternal Exposure Lipid content Environmental chemistry Female Gas chromatography Oviparity Water Pollutants Chemical Environmental Monitoring |
| Zdroj: | Freese, M.; Suehring, R.; Marohn, L.; Pohlmann, J.-D.; Wolschke, H.; Byer, J.D.; Alaee, M.; Ebinghaus, R.; Hanel, R.: Maternal transfer of dioxin-like compounds in artificially matured European eels. In: Environmental Pollution. Vol. 227 (2017) 348-356. (DOI: 10.1016/j.envpol.2017.04.096) |
| ISSN: | 0269-7491 |
| Popis: | Several eel species of the genus Anguilla are considered endangered due to a severe decline in recruitment. Up to now, the reasons for this threatening development are not fully understood. The eel's highly specialized biology can lead to explicitly high accumulation of globally distributed organic lipophilic contaminants during its continental life. Because of this and due the particular toxicological sensitivity of early life stages of oviparous organisms towards dioxin-like compounds, it is crucial to improve our understanding concerning toxicokinetics and maternal transfer of organic contaminants in eels. This study presents analytical data on maternal transfer of dioxin-like (dl) compounds in relevant tissue samples taken from artificially matured and non-matured European silver eels (Anguilla anguilla) from German inland waters using gas chromatography coupled with mass spectrometry (GC/MS) and high-resolution mass spectrometry (GC/HRMS). Detected concentrations revealed a lipid-driven transfer of targeted compounds from muscle-fat-reserves to gonads and eggs respectively, with no distinct preferences concerning the chlorination degree of targeted compounds. Dl-PCBs were shown to contribute the major share of toxicity equivalents found in analysed eel tissues. Maternal muscle tissue to egg concentration ratios in wet weight–based samples had a mean of 6.95 ± 1.49 in accordance with the differences in total lipid content in the respective body matrices. Dioxins and furans in analysed samples were (from a toxicological point of view) of less relevance. Furthermore it was shown that muscle concentrations in silver eels could be used in future assessments to make conservative predictions for expected egg concentrations in female eels. |
| Databáze: | OpenAIRE |
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