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Individual boldness is life stage-dependent and linked to dispersal in a hermaphrodite land snail

Abstract : Both individual variation in dispersal tendency and animal personalities have been shown to be widespread in nature. They are often associated in personality-dependent dispersal, and both have major but underappreciated consequences for ecological and evolutionary dynamics. In addition, changes in animal personality can appear through ontogeny, leading to life stage-dependent behaviours. We investigated relationships between dispersal, life stage and boldness in an invertebrate with between- and within-life stages variation in dispersal tendency, the land snail Cornu aspersum. Latency to exit the shell following a simulated attack was repeatable, indicating boldness is a personality trait in Cornu aspersum. Subadults were bolder and more dispersive than adults. Dispersers were bolder than non-dispersers, independently of boldness changes between life stages. We discuss how these results can be explained in relation with life history strategies in this hermaphrodite species, in particular risk management in the context of reproductive investment.
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https://hal-univ-rennes1.archives-ouvertes.fr/hal-01616988
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Submitted on : Sunday, October 15, 2017 - 8:14:47 PM
Last modification on : Monday, April 29, 2019 - 2:30:48 PM

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Maxime Dahirel, Alexandre Vong, Armelle Ansart, Luc Madec. Individual boldness is life stage-dependent and linked to dispersal in a hermaphrodite land snail. Ecological Research, Ecological Society of Japan, 2017, 32 (5), pp.751-755. ⟨10.1007/s11284-017-1484-x⟩. ⟨hal-01616988⟩

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