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

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 z...

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Autores principales: Cozzarolo, Camille‐Sophie, Jenkins, Tania, Toews, David P. L., Brelsford, Alan, Christe, Philippe
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6202724/
https://www.ncbi.nlm.nih.gov/pubmed/30386579
http://dx.doi.org/10.1002/ece3.4469
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author Cozzarolo, Camille‐Sophie
Jenkins, Tania
Toews, David P. L.
Brelsford, Alan
Christe, Philippe
author_facet Cozzarolo, Camille‐Sophie
Jenkins, Tania
Toews, David P. L.
Brelsford, Alan
Christe, Philippe
author_sort Cozzarolo, Camille‐Sophie
collection PubMed
description 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, Setophaga coronata coronata and S. c. auduboni, 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 S. c. coronata and S. c. auduboni. We screened birds from five transects across the hybrid zone for three phylogenetic groupings of avian haemosporidians Plasmodium, Haemoproteus and Leucocytozoon parasites and quantified intensity of infection. Contrary to our prediction, hybrids did not have higher haemosporidian parasite prevalence. Variation in Haemoproteus prevalence was best explained by an interaction between a birds’ hybrid index and elevation, while the probability of infection with Leucocytozoon 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 Haemoproteus 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.
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spelling pubmed-62027242018-11-01 Prevalence and diversity of haemosporidian parasites in the yellow‐rumped warbler hybrid zone Cozzarolo, Camille‐Sophie Jenkins, Tania Toews, David P. L. Brelsford, Alan Christe, Philippe Ecol Evol Original Research 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, Setophaga coronata coronata and S. c. auduboni, 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 S. c. coronata and S. c. auduboni. We screened birds from five transects across the hybrid zone for three phylogenetic groupings of avian haemosporidians Plasmodium, Haemoproteus and Leucocytozoon parasites and quantified intensity of infection. Contrary to our prediction, hybrids did not have higher haemosporidian parasite prevalence. Variation in Haemoproteus prevalence was best explained by an interaction between a birds’ hybrid index and elevation, while the probability of infection with Leucocytozoon 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 Haemoproteus 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. John Wiley and Sons Inc. 2018-09-12 /pmc/articles/PMC6202724/ /pubmed/30386579 http://dx.doi.org/10.1002/ece3.4469 Text en © 2018 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Research
Cozzarolo, Camille‐Sophie
Jenkins, Tania
Toews, David P. L.
Brelsford, Alan
Christe, Philippe
Prevalence and diversity of haemosporidian parasites in the yellow‐rumped warbler hybrid zone
title Prevalence and diversity of haemosporidian parasites in the yellow‐rumped warbler hybrid zone
title_full Prevalence and diversity of haemosporidian parasites in the yellow‐rumped warbler hybrid zone
title_fullStr Prevalence and diversity of haemosporidian parasites in the yellow‐rumped warbler hybrid zone
title_full_unstemmed Prevalence and diversity of haemosporidian parasites in the yellow‐rumped warbler hybrid zone
title_short Prevalence and diversity of haemosporidian parasites in the yellow‐rumped warbler hybrid zone
title_sort prevalence and diversity of haemosporidian parasites in the yellow‐rumped warbler hybrid zone
topic Original Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6202724/
https://www.ncbi.nlm.nih.gov/pubmed/30386579
http://dx.doi.org/10.1002/ece3.4469
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