Habitat heterogeneity favors asexual reproduction in natural populations of grassthrips.

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Etat: Public
Version: Final published version
ID Serval
serval:BIB_B8FBC2F94601
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Habitat heterogeneity favors asexual reproduction in natural populations of grassthrips.
Périodique
Evolution
Auteur(s)
Lavanchy G., Strehler M., Llanos Roman M.N., Lessard-Therrien M., Humbert J.Y., Dumas Z., Jalvingh K., Ghali K., Fontcuberta García-Cuenca A., Zijlstra B., Arlettaz R., Schwander T.
ISSN
1558-5646 (Electronic)
ISSN-L
0014-3820
Statut éditorial
Publié
Date de publication
2016
Peer-reviewed
Oui
Volume
70
Numéro
8
Pages
1780-1790
Langue
anglais
Résumé
Explaining the overwhelming success of sex among eukaryotes is difficult given the obvious costs of sex relative to asexuality. Different studies have shown that sex can provide benefits in spatially heterogeneous environments under specific conditions, but whether spatial heterogeneity commonly contributes to the maintenance of sex in natural populations remains unknown. We experimentally manipulated habitat heterogeneity for sexual and asexual thrips lineages in natural populations and under seminatural mesocosm conditions by varying the number of hostplants available to these herbivorous insects. Asexual lineages rapidly replaced the sexual ones, independently of the level of habitat heterogeneity in mesocosms. In natural populations, the success of sexual thrips decreased with increasing habitat heterogeneity, with sexual thrips apparently only persisting in certain types of hostplant communities. Our results illustrate how genetic diversity-based mechanisms can favor asexuality instead of sex when sexual lineages co-occur with genetically variable asexual lineages.
Mots-clé
Asexuality, evolution of sex, parthenogenesis, Thysanoptera, Tangled Bank
Pubmed
Web of science
Open Access
Oui
Création de la notice
06/06/2016 7:51
Dernière modification de la notice
20/08/2019 15:27
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