Evolution of asexuality via different mechanisms in grass thrips (thysanoptera: Aptinothrips).

Détails

ID Serval
serval:BIB_3E385487EC72
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Evolution of asexuality via different mechanisms in grass thrips (thysanoptera: Aptinothrips).
Périodique
Evolution
Auteur⸱e⸱s
van der Kooi C.J., Schwander T.
ISSN
1558-5646 (Electronic)
ISSN-L
0014-3820
Statut éditorial
Publié
Date de publication
2014
Peer-reviewed
Oui
Volume
68
Numéro
7
Pages
1883-1893
Langue
anglais
Résumé
Asexual lineages can derive from sexual ancestors via different mechanisms and at variable rates, which affects the diversity of the asexual population and thereby its ecological success. We investigated the variation and evolution of reproductive systems in Aptinothrips, a genus of grass thrips comprising four species. Extensive population surveys and breeding experiments indicated sexual reproduction in A. elegans, asexuality in A. stylifer and A. karnyi, and both sexual and asexual lineages in A. rufus. Asexuality in A. stylifer and A. rufus coincides with a worldwide distribution, with sexual A. rufus lineages confined to a limited area. Inference of molecular phylogenies and antibiotic treatment revealed different causes of asexuality in different species. Asexuality in A. stylifer and A. karnyi has most likely genetic causes, while it is induced by endosymbionts in A. rufus. Endosymbiont-community characterization revealed presence of Wolbachia, and lack of other bacteria known to manipulate host reproduction. However, only 69% asexual A. rufus females are Wolbachia-infected, indicating that either an undescribed endosymbiont causes asexuality in this species or that Wolbachia was lost in several lineages that remained asexual. These results open new perspectives for studies on the maintenance of mixed sexual and asexual reproduction in natural populations.
Mots-clé
Asexual reproduction, Wolbachia, endosymbiont, haplodiploidy, hybridization, parthenogenesis
Pubmed
Web of science
Création de la notice
04/03/2014 13:13
Dernière modification de la notice
20/08/2019 13:34
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