Mobility affects copulation and oviposition dynamics in Pieris brassicae in seminatural cages

Nicolas Larranaga; Michel Baguette; Olivier Calvez; Delphine Legrand

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Mobility affects copulation and oviposition dynamics in Pieris brassicae in seminatural cages

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When,how often and for how long organisms mate can have strong consequences for individual fitness and are crucial aspects of evolutionary ecology.Such determinants are likely to be of even greater importance in monandrous species and species with short adult life stages.Previous work suggests that mobility,a key dispersalrelated trait,may affect the dynamics of copulations,but few studies have investigated the impact of individual mobility on mating latency,copulation duration and oviposition latency simultaneously.In this paper,we monitored the copulation dynamics of 40 males and 40 females,as well as the oviposition dynamics of the females of the Large White butterfly Pieris brassicae,a facultative long-distance disperser butterfly.Individuals from a breeding were selected to create a uniform distribution of mobility and we recorded the timing,number and duration of all copulations in a semiexperimental system.We showed that mobility,measured as the time spent in flight under stressful conditions (a proxy of dispersal tendency),correlates with all aspects of copulation dynamics:mobile males and females mated earlier and for shorter periods than less mobile individuals.In tum,late mating females increased the time between copulation and oviposition.These results feed the previously described mobility syndrome ofP brassicae,involving morphological and physiological characters,with life-history traits.We suggest that the reduction of mating latency and copulation duration has an adaptive value in dispersing individuals,as their life expectancy might be shorter than that of sedentary individuals.

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《中国昆虫科学：英文版》 |2019年第4期|743-752|共10页
作者
Nicolas Larranaga; Michel Baguette; Olivier Calvez; Delphine Legrand;
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Centre National de la Recherche Scientifique and Université Paul Sabatier Toulouse Ⅲ, SETE Station d'Ecologie Théorique et Expérimentale, UMR 5321, Moulis, France;

University of Gothenburg, Department of Biological and Environmental Sciences, Box 463, SE-405 30,Gothenburg, Sweden;

Centre National de la Recherche Scientifique and Université Paul Sabatier Toulouse Ⅲ, SETE Station d'Ecologie Théorique et Expérimentale, UMR 5321, Moulis, France;

Muséum National d'Histoire Naturelle(Sorbonne Universités), Institut de Systématique,Evolution et Biodiversité, UMR 7205, 57 rue Cuvier, 75005, Paris, cedex 5, France;

Centre National de la Recherche Scientifique and Université Paul Sabatier Toulouse Ⅲ, SETE Station d'Ecologie Théorique et Expérimentale, UMR 5321, Moulis, France;

Centre National de la Recherche Scientifique and Université Paul Sabatier Toulouse Ⅲ, SETE Station d'Ecologie Théorique et Expérimentale, UMR 5321, Moulis, France;

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Mobility affects copulation and oviposition dynamics in Pieris brassicae in seminatural cages

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