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Étude d'un modèle comportemental du vieillissement : la construction de la toile chez une araignée orbitèle

Abstract : Ageing is an obligatory and natural progressive process often associated with a decline in organism functions and performances. Although behaviours inform us about the physiological and neurological state of an organism, relationship between behaviour and ageing remains largely misunderstood. Thus, the research of new animal models that could assess this relationship would be crucial. In orb weaving spiders, the web is a complex geometrical structure, which presents a visible regularity. Its construction results of a succession of organized and repeatable behaviours and each variation in web characteristics could be interpreted as a behavioural variation during web construction. The objective of this study was to highlight structural variations in web's structure of the spider Zygiella-x-notata, which were correlated with spider's age, and to know how ageing affected spider mobility during web construction and prey capture. Our results showed that ageing influenced the geometrical structure of the orb-web, and the spider web-building and prey capture behaviours. Our study allowed to validate the pertinence of the use of spiders and their orb web as innovative models for studies of relationships between ageing and behaviour
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https://hal.univ-lorraine.fr/tel-01749655
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  • HAL Id : tel-01749655, version 1

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Mylène Anotaux. Étude d'un modèle comportemental du vieillissement : la construction de la toile chez une araignée orbitèle. Médecine humaine et pathologie. Université de Lorraine, 2012. Français. ⟨NNT : 2012LORR0309⟩. ⟨tel-01749655⟩

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