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Hybridization and population structure of the Culex pipiens complex in the islands of Macaronesia

The Culex pipiens complex includes two widespread mosquito vector species, Cx. pipiens and Cx. quinquefasciatus. The distribution of these species varies in latitude, with the former being present in temperate regions and the latter in tropical and subtropical regions. However, their distribution ra...

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Autores principales: Gomes, Bruno, Alves, Joana, Sousa, Carla A, Santa-Ana, Marta, Vieira, Inês, Silva, Teresa L, Almeida, António PG, Donnelly, Martin J, Pinto, João
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Blackwell Publishing Ltd 2012
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3433992/
https://www.ncbi.nlm.nih.gov/pubmed/22957190
http://dx.doi.org/10.1002/ece3.307
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author Gomes, Bruno
Alves, Joana
Sousa, Carla A
Santa-Ana, Marta
Vieira, Inês
Silva, Teresa L
Almeida, António PG
Donnelly, Martin J
Pinto, João
author_facet Gomes, Bruno
Alves, Joana
Sousa, Carla A
Santa-Ana, Marta
Vieira, Inês
Silva, Teresa L
Almeida, António PG
Donnelly, Martin J
Pinto, João
author_sort Gomes, Bruno
collection PubMed
description The Culex pipiens complex includes two widespread mosquito vector species, Cx. pipiens and Cx. quinquefasciatus. The distribution of these species varies in latitude, with the former being present in temperate regions and the latter in tropical and subtropical regions. However, their distribution range overlaps in certain areas and interspecific hybridization has been documented. Genetic introgression between these species may have epidemiological repercussions for West Nile virus (WNV) transmission. Bayesian clustering analysis based on multilocus genotypes of 12 microsatellites was used to determine levels of hybridization between these two species in Macaronesian islands, the only contact zone described in West Africa. The distribution of the two species reflects both the islands' biogeography and historical aspects of human colonization. Madeira Island displayed a homogenous population of Cx. pipiens, whereas Cape Verde showed a more intriguing scenario with extensive hybridization. In the islands of Brava and Santiago, only Cx. quinquefasciatus was found, while in Fogo and Maio high hybrid rates (∼40%) between the two species were detected. Within the admixed populations, second-generation hybrids (∼50%) were identified suggesting a lack of isolation mechanisms. The observed levels of hybridization may locally potentiate the transmission to humans of zoonotic arboviruses such as WNV.
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spelling pubmed-34339922012-09-06 Hybridization and population structure of the Culex pipiens complex in the islands of Macaronesia Gomes, Bruno Alves, Joana Sousa, Carla A Santa-Ana, Marta Vieira, Inês Silva, Teresa L Almeida, António PG Donnelly, Martin J Pinto, João Ecol Evol Original Research The Culex pipiens complex includes two widespread mosquito vector species, Cx. pipiens and Cx. quinquefasciatus. The distribution of these species varies in latitude, with the former being present in temperate regions and the latter in tropical and subtropical regions. However, their distribution range overlaps in certain areas and interspecific hybridization has been documented. Genetic introgression between these species may have epidemiological repercussions for West Nile virus (WNV) transmission. Bayesian clustering analysis based on multilocus genotypes of 12 microsatellites was used to determine levels of hybridization between these two species in Macaronesian islands, the only contact zone described in West Africa. The distribution of the two species reflects both the islands' biogeography and historical aspects of human colonization. Madeira Island displayed a homogenous population of Cx. pipiens, whereas Cape Verde showed a more intriguing scenario with extensive hybridization. In the islands of Brava and Santiago, only Cx. quinquefasciatus was found, while in Fogo and Maio high hybrid rates (∼40%) between the two species were detected. Within the admixed populations, second-generation hybrids (∼50%) were identified suggesting a lack of isolation mechanisms. The observed levels of hybridization may locally potentiate the transmission to humans of zoonotic arboviruses such as WNV. Blackwell Publishing Ltd 2012-08 2012-07-06 /pmc/articles/PMC3433992/ /pubmed/22957190 http://dx.doi.org/10.1002/ece3.307 Text en © 2012 Published by Blackwell Publishing Ltd. http://creativecommons.org/licenses/by/2.5/ Re-use of this article is permitted in accordance with the Creative Commons Deed, Attribution 2.5, which does not permit commercial exploitation.
spellingShingle Original Research
Gomes, Bruno
Alves, Joana
Sousa, Carla A
Santa-Ana, Marta
Vieira, Inês
Silva, Teresa L
Almeida, António PG
Donnelly, Martin J
Pinto, João
Hybridization and population structure of the Culex pipiens complex in the islands of Macaronesia
title Hybridization and population structure of the Culex pipiens complex in the islands of Macaronesia
title_full Hybridization and population structure of the Culex pipiens complex in the islands of Macaronesia
title_fullStr Hybridization and population structure of the Culex pipiens complex in the islands of Macaronesia
title_full_unstemmed Hybridization and population structure of the Culex pipiens complex in the islands of Macaronesia
title_short Hybridization and population structure of the Culex pipiens complex in the islands of Macaronesia
title_sort hybridization and population structure of the culex pipiens complex in the islands of macaronesia
topic Original Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3433992/
https://www.ncbi.nlm.nih.gov/pubmed/22957190
http://dx.doi.org/10.1002/ece3.307
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