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Étude comportementale des interactions entre une mère lycose errante, Pardosa saltans (Araneae), et son cocon

Abstract : Parental care is widespread among animal kingdom and is more or less expressed. Thus, the study of these behaviours among primitive species, can let us understand how parental behaviours were implemented during evolution. In this thesis we studied maternal behaviour in a wandering spider Pardosa saltans (Lycosidae) with her egg-sac and her young which she actively transports. We have described maternal behaviour towards the egg-sac and highlighted the presence of ontogeny of maternal behavior in this species. Furthermore, we were able to evaluate some of the physiological and ecological investment associated with maternal care of the egg-sac and young. Finally, we have, for the first time, identify chemical compounds on the surface of the silk egg-sac, and placed in evidence the presence of a chemical and vibrational communication between the mother and her cocoon.
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Fanny Ruhland. Étude comportementale des interactions entre une mère lycose errante, Pardosa saltans (Araneae), et son cocon. Biologie animale. Université Rennes 1, 2016. Français. ⟨NNT : 2016REN1B019⟩. ⟨tel-01691641⟩

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