Biased sex ratio in the European eel (Anguilla anguilla) swimbladder parasite Anguillicola crassus, experimentally induced by 11-ketosterone

International audience Parasites are intimately connected to the host in which they live, and some may be affected by the polluted environment of their host. The present study describes the effect of a steroid hormone (11-ketotestosterone) on the sex ratio of the invasive hematophagous nematode Angu...

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Bibliographic Details
Published in:Journal of Parasitology
Main Authors: Fazio, G., Moné, H., Mouahid, G., Sasal, P.
Other Authors: Biologie et écologie tropicale et méditerranéenne 2007-2010 (BETM), Université de Perpignan Via Domitia (UPVD)-École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)
Format: Article in Journal/Newspaper
Language:English
Published: HAL CCSD 2008
Subjects:
[SDE.BE]Environmental Sciences/Biodiversity and Ecology
Anguilla anguilla
Online Access:https://hal.archives-ouvertes.fr/halsde-00344534
https://hal.archives-ouvertes.fr/halsde-00344534/document
https://hal.archives-ouvertes.fr/halsde-00344534/file/Fazio-Biased-manuscrit.pdf
https://doi.org/10.1645/GE-1486.1
Description
Summary:International audience Parasites are intimately connected to the host in which they live, and some may be affected by the polluted environment of their host. The present study describes the effect of a steroid hormone (11-ketotestosterone) on the sex ratio of the invasive hematophagous nematode Anguillicola crassus Kuwahara, Niimi & Itagaki, 1974, when experimentally injected to European eels, Anguilla anguilla, Our results showed that this steroid induced a significant male-biased ratio in the nematode A. crassus infrapopulations, suggesting that the presence of endocrine disruptors in the environment may lead to skewed sex ratios among parasites.

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