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Premating Reproductive Barriers between Hybridising Cricket Species Differing in Their Degree of Polyandry
Understanding speciation hinges on understanding how reproductive barriers arise between incompletely isolated populations. Despite their crucial role in speciation, prezygotic barriers are relatively poorly understood and hard to predict. We use two closely related cricket species, Gryllus bimacula...
Autores principales: | , , , |
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Formato: | Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2011
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3088677/ https://www.ncbi.nlm.nih.gov/pubmed/21573165 http://dx.doi.org/10.1371/journal.pone.0019531 |
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author | Veen, Thor Faulks, Joseph Rodríguez-Muñoz, Rolando Tregenza, Tom |
author_facet | Veen, Thor Faulks, Joseph Rodríguez-Muñoz, Rolando Tregenza, Tom |
author_sort | Veen, Thor |
collection | PubMed |
description | Understanding speciation hinges on understanding how reproductive barriers arise between incompletely isolated populations. Despite their crucial role in speciation, prezygotic barriers are relatively poorly understood and hard to predict. We use two closely related cricket species, Gryllus bimaculatus and G. campestris, to experimentally investigate premating barriers during three sequential mate choice steps. Furthermore, we experimentally show a significant difference in polyandry levels between the two species and subsequently test the hypothesis that females of the more polyandrous species, G. bimaculatus, will be less discriminating against heterospecific males and hence hybridise more readily. During close-range mating behaviour experiments, males showed relatively weak species discrimination but females discriminated very strongly. In line with our predictions, this discrimination is asymmetric, with the more polyandrous G. bimaculatus mating heterospecifically and G. campestris females never mating heterospecifically. Our study shows clear differences in the strength of reproductive isolation during the mate choice process depending on sex and species, which may have important consequences for the evolution of reproductive barriers. |
format | Text |
id | pubmed-3088677 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2011 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-30886772011-05-13 Premating Reproductive Barriers between Hybridising Cricket Species Differing in Their Degree of Polyandry Veen, Thor Faulks, Joseph Rodríguez-Muñoz, Rolando Tregenza, Tom PLoS One Research Article Understanding speciation hinges on understanding how reproductive barriers arise between incompletely isolated populations. Despite their crucial role in speciation, prezygotic barriers are relatively poorly understood and hard to predict. We use two closely related cricket species, Gryllus bimaculatus and G. campestris, to experimentally investigate premating barriers during three sequential mate choice steps. Furthermore, we experimentally show a significant difference in polyandry levels between the two species and subsequently test the hypothesis that females of the more polyandrous species, G. bimaculatus, will be less discriminating against heterospecific males and hence hybridise more readily. During close-range mating behaviour experiments, males showed relatively weak species discrimination but females discriminated very strongly. In line with our predictions, this discrimination is asymmetric, with the more polyandrous G. bimaculatus mating heterospecifically and G. campestris females never mating heterospecifically. Our study shows clear differences in the strength of reproductive isolation during the mate choice process depending on sex and species, which may have important consequences for the evolution of reproductive barriers. Public Library of Science 2011-05-05 /pmc/articles/PMC3088677/ /pubmed/21573165 http://dx.doi.org/10.1371/journal.pone.0019531 Text en Veen et al. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited. |
spellingShingle | Research Article Veen, Thor Faulks, Joseph Rodríguez-Muñoz, Rolando Tregenza, Tom Premating Reproductive Barriers between Hybridising Cricket Species Differing in Their Degree of Polyandry |
title | Premating Reproductive Barriers between Hybridising Cricket Species Differing in Their Degree of Polyandry |
title_full | Premating Reproductive Barriers between Hybridising Cricket Species Differing in Their Degree of Polyandry |
title_fullStr | Premating Reproductive Barriers between Hybridising Cricket Species Differing in Their Degree of Polyandry |
title_full_unstemmed | Premating Reproductive Barriers between Hybridising Cricket Species Differing in Their Degree of Polyandry |
title_short | Premating Reproductive Barriers between Hybridising Cricket Species Differing in Their Degree of Polyandry |
title_sort | premating reproductive barriers between hybridising cricket species differing in their degree of polyandry |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3088677/ https://www.ncbi.nlm.nih.gov/pubmed/21573165 http://dx.doi.org/10.1371/journal.pone.0019531 |
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