Prevalence and diversity of haemosporidian parasites in the yellow-rumped warbler hybrid zone.

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Ressource 1Télécharger: Cozzarolo_et_al-2018-Ecology_and_Evolution.pdf (1561.02 [Ko])
Etat: Serval
Version: Final published version
ID Serval
serval:BIB_377F098B898A
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Prevalence and diversity of haemosporidian parasites in the yellow-rumped warbler hybrid zone.
Périodique
Ecology and Evolution
Auteur(s)
Cozzarolo C.S., Jenkins T., Toews DPL, Brelsford A., Christe P.
ISSN
2045-7758 (Print)
ISSN-L
2045-7758
Statut éditorial
Publié
Date de publication
10/2018
Peer-reviewed
Oui
Volume
8
Numéro
19
Pages
9834-9847
Langue
anglais
Résumé
Parasites can play a role in speciation, by exerting different selection pressures on different host lineages, leading to reproductive barriers in regions of possible interbreeding. Hybrid zones therefore offer an ideal system to study the effect of parasites on speciation. Here, we study a hybrid zone in the foothills of the Rocky Mountains where two yellow-rumped warbler subspecies, <i>Setophaga coronata coronata</i> and <i>S. c. auduboni</i> , interbreed. There is partial reproductive isolation between them, but no evidence of strong assortative mating within the hybrid zone, suggesting the existence of a postzygotic selection against hybrids. Here, we test whether haemosporidian parasites might play a role in selecting against hybrids between <i>S. c. coronata</i> and <i>S. c. auduboni</i> . We screened birds from five transects across the hybrid zone for three phylogenetic groupings of avian haemosporidians <i>Plasmodium</i> , <i>Haemoproteus</i> and <i>Leucocytozoon</i> parasites and quantified intensity of infection. Contrary to our prediction, hybrids did not have higher haemosporidian parasite prevalence. Variation in <i>Haemoproteus</i> prevalence was best explained by an interaction between a birds' hybrid index and elevation, while the probability of infection with <i>Leucocytozoon</i> parasites was only influenced by elevation. We also found no significant difference in the diversity of haemosporidian lineages between the warbler subspecies and their hybrids. Finally, intensity of infection by <i>Haemoproteus</i> increased significantly with elevation, but was not significantly linked to birds' hybrid index. In conclusion, our data suggest that haemosporidian parasites do not seem to play a major role in selecting against hybrids in this system.
Mots-clé
Setophaga coronata auduboni, Setophaga coronata coronata, avian malaria, elevation, hybrid zone, postzygotic reproductive barrier
Pubmed
Web of science
Open Access
Oui
Création de la notice
15/08/2018 13:48
Dernière modification de la notice
08/05/2019 17:05
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