Toxicity of synthetic Endocrine Disrupting Compounds on meiofauna: Estradiol benzoate as a case study
| Autor: | Manel Faiza, Naceur Essid, Derya Ürkmez, Mohammed Almalki, Fehmi Boufahja, Amor Hedfi |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Tunisia
010504 meteorology & atmospheric sciences biology Estradiol Nematoda Health Toxicology and Mutagenesis Meiobenthos Paracomesoma Species diversity General Medicine 010501 environmental sciences Toxicology biology.organism_classification 01 natural sciences Pollution chemistry.chemical_compound Animal science Nematode chemistry Toxicity Estradiol benzoate Endocrine system Animals Omnivore 0105 earth and related environmental sciences |
| Zdroj: | Environmental pollution (Barking, Essex : 1987). 286 |
| ISSN: | 1873-6424 |
| Popis: | An experimental study was carried out to determine the effects of the enrichment of sediments by endocrine perturbators on free-living nematodes from the Ghar El Melh lagoon, Tunisia. For 30 days, four concentrations of Estradiol Benzoate (hereafter EB) (0.43, 4.3, 8.6 and 12.9 ng l−1). The average nematode abundances showed a significant increase after the introduction of EB in their close environment. In contrast, the taxonomic examination has shown a decrease in species diversity of nematodes. The ordination of treatments according to the nMDS showed a clear structural separation of the enriched replicates with EB from controls based on species lists, in particular for concentrations EB3 and EB4. Indeed, under such conditions, the nematofauna exhibited a more remarkable presence of a new record for Science Theristus n. sp. and a decrease in relative abundances of Paracomesoma dubium. On feeding level, a predominance of non-selective deposit-feeders and a decline in proportions of epistrate feeders and carnivorous omnivores was observed with increasing concentrations of EB. Furthermore, in treated replicates with EB, females discernibly showed an increase compared to controls. Overall, EB affect significantly features of meiobenthic nematodes starting from the concentration of 4.3 ng l−1. |
| Databáze: | OpenAIRE |
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