Effects of fluoxetine on the reproduction of two prosobranch mollusks: Potamopyrgus antipodarum and Valvata piscinalis | Effets de la fluoxétine sur le reproduction de deux mollusques prosobranches: Potamopyrgus antipodarum et Valvata piscinalis
2009
Gust, M. | Buronfosse, T. | Giamberini, Laure | Ramil, M. | Mons, R. | Garric, Jeanne | Biologie des écosystèmes aquatiques (UR BELY) ; Centre national du machinisme agricole, du génie rural, des eaux et forêts (CEMAGREF) | ECOLE VETERINAIRE LYON FRA ; Partenaires IRSTEA ; Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA) | Laboratoire des Interactions Ecotoxicologie, Biodiversité, Ecosystèmes (LIEBE) ; Université Paul Verlaine - Metz (UPVM)-Centre National de la Recherche Scientifique (CNRS) | BFG FEDERAL INSTITUTE OF HYDROLOGY KOBLENZ DEU ; Partenaires IRSTEA ; Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)
[Departement_IRSTEA]Eaux [TR1_IRSTEA]BELCA
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Show more [+] Less [-]English. Fluoxetine is a widely used antidepressant, frequently found in aquatic ecosystems. We investigated its effects on two freshwater prosobranch gastropods: Valvata piscinalis (European valve snail) and Potamopyrgus antipodarum (New Zealand mudsnail), which have different reproductive modes. The fecundity of V. piscinalis (cumulate number of eggs at day 42) was not affected with a NOEC of 100µg/L nominal concentration (69µg/L measured concentration). The mudsnail P. antipodarum responded in a biphasic dose-effect curve at low concentrations. The cumulate number of neonates at day 42 had a LOEC of 100µg/L (69µg/L) and a NOEC of 33.3µg/L (13µg/L), whereas the embryos in the brood pouch at day 42 only showed a LOEC of 3.7 µg/L (1µg/L). We also observed histological effects in P. antipodarum (gonadal thickness). Among the sexual steroids we measured only testosterone which varied, independent of reproduction. Moreover the use of two closely related species highlights the interspecific variability.
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