Comparative phylogeography of mutualists and the effect of the host on the genetic structure of its partners.

Détails

ID Serval
serval:BIB_7C7117410FA0
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Comparative phylogeography of mutualists and the effect of the host on the genetic structure of its partners.
Périodique
Biological Journal of the Linnean Society
Auteur⸱e⸱s
Espindola A., Carstens B.C., Alvarez N.
ISSN
1095-8312 (electronic)
ISSN-L
0024-4066
Statut éditorial
Publié
Date de publication
2014
Peer-reviewed
Oui
Volume
113
Numéro
4
Pages
1021-1035
Langue
anglais
Résumé
Whether or not species participating in specialized and obligate interactions display similar and simultaneous demographic variations at the intraspecific level remains an open question in phylogeography. In the present study, we used the mutualistic nursery pollination occurring between the European globeflower Trollius europaeus and its specialized pollinators in the genus Chiastocheta as a case study. Explicitly, we investigated if the phylogeographies of the pollinating flies are significantly different from the expectation under a scenario of plant-insect congruence. Based on a large-scale sampling, we first used mitochondrial data to infer the phylogeographical histories of each fly species. Then, we defined phylogeographical scenarios of congruence with the plant history, and used maximum likelihood and Bayesian approaches to test for plant-insect phylogeographical congruence for the three Chiastocheta species. We show that the phylogeographical histories of the three fly species differ. Only Chiastocheta lophota and Chiastocheta dentifera display strong spatial genetic structures, which do not appear to be statistically different from those expected under scenarios of phylogeographical congruence with the plant. The results of the present study indicate that the fly species responded in independent and different ways to shared evolutionary forces, displaying varying levels of congruence with the plant genetic structure
Mots-clé
Approximate Bayesian computation, Chiastocheta, climatic oscillations, coalescent modelling, coevolution, Last Glacial Maximum, nursery pollination mutualism, spatial genetic structure, Trollius europaeus
Web of science
Open Access
Oui
Création de la notice
22/09/2014 10:52
Dernière modification de la notice
20/08/2019 15:38
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