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Toxicity of synthetic Endocrine Disrupting Compounds on meiofauna: estradiol benzoate as a case study
Essid, N.; Faiza, M.; Hedfi, A.; Almalki, M.; Ürkmez, D.; Boufahja, F. (2021). Toxicity of synthetic Endocrine Disrupting Compounds on meiofauna: estradiol benzoate as a case study. Environ. Pollut. 286: 117300. https://dx.doi.org/10.1016/j.envpol.2021.117300
In: Environmental Pollution. Elsevier: Barking. ISSN 0269-7491; e-ISSN 1873-6424, meer
|  |
| Trefwoorden |
Nematoda [WoRMS]; Paracomesoma dubium (Filipjev, 1918) Schuurmans Stekhoven, 1950 [WoRMS]
Marien/Kust |
| Author keywords |
Closed microcosms, Meiobenthic nematodes, Estradiol benzoate, Taxonomic diversity |
| Auteurs | | Top |
- Essid, N.
- Faiza, M.
- Hedfi, A.
|
- Almalki, M.
- Ürkmez, D.
- Boufahja, F.
|
|
| Abstract |
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. |
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