Precedence of the first male sperm in successive matings in the HymenopteraDiadromus pulchellus |
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Authors: | Mona El Agoze Marylène Poirié Georges Périquet |
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Affiliation: | (1) Institut de Biocénotique Expérimentale des Agrosystèmes, Université F. Rabelais, Parc Grandmont, 37200 Tours, France |
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Abstract: | In most insect species where double matings occur, sperm from the second male preferentially fertilize subsequent eggs. However, we demonstrate here that, as already shown for some other hymenopteran species, this is not the case in the ichneumonid waspDiadromus pulchellus (Wesmeal): sperm from the first male usually father all the female progeny. This precedence of the first male sperm is also observed in double matings involving an haploid male and a diploid sterile male, whichever is the first mating male. We discuss the consequences of this phenomenon from an evolutionary point of view. |
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Keywords: | Diadromus pulchellus Ichneumonidae double mating diploid males sperm precedence |
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