Influence of Crassostrea gigas (Thunberg) sexual maturation stage and ploidy on uptake of paralytic phycotoxins. - Université de Bretagne Occidentale Access content directly
Journal Articles Toxicon Year : 2012

Influence of Crassostrea gigas (Thunberg) sexual maturation stage and ploidy on uptake of paralytic phycotoxins.

Abstract

The purpose of this study was to assess paralytic phycotoxin uptake in diploid and triploid oysters at two stages of their sexual cycle corresponding to their status in early summer (June) and winter (November). Samples of diploid and triploid oysters were exposed to a toxic culture of Alexandrium minutum for 4 days in each season. No significant differences in filtration or clearance rates were observed during either November or June experiments. When diploid oysters were at resting stage (November), toxin uptake showed no significant difference between the ploidy classes. In contrast, when the diploid oysters were at the peak of their sexual maturation (June), the triploid oysters were seen to accumulate almost double the amount of paralytic toxins as the diploid ones.

Dates and versions

hal-00788424 , version 1 (14-02-2013)

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Marielle Guéguen, Régis Baron, Michèle Bardouil, Hansy Haberkorn, Philippe Soudant, et al.. Influence of Crassostrea gigas (Thunberg) sexual maturation stage and ploidy on uptake of paralytic phycotoxins.. Toxicon, 2012, 60 (1), pp.40-3. ⟨10.1016/j.toxicon.2012.03.003⟩. ⟨hal-00788424⟩
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