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Evidence for no sexual isolation between Drosophila albomicans and D. nasuta

Sexual isolation, the reduced tendency to mate, is one of the reproductive barriers that prevent gene flow between different species. Various species-specific signals during courtship contribute to sexual isolation between species. Drosophila albomicans and D. nasuta are closely related species of t...

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Autores principales: Kim, Yong-Kyu, Phillips, Dennis R, Tao, Yun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Blackwell Publishing Ltd 2013
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3728947/
https://www.ncbi.nlm.nih.gov/pubmed/23919152
http://dx.doi.org/10.1002/ece3.619
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author Kim, Yong-Kyu
Phillips, Dennis R
Tao, Yun
author_facet Kim, Yong-Kyu
Phillips, Dennis R
Tao, Yun
author_sort Kim, Yong-Kyu
collection PubMed
description Sexual isolation, the reduced tendency to mate, is one of the reproductive barriers that prevent gene flow between different species. Various species-specific signals during courtship contribute to sexual isolation between species. Drosophila albomicans and D. nasuta are closely related species of the nasuta subgroup within the Drosophila immigrans group and are distributed in allopatry. We analyzed mating behavior and courtship as well as cuticular hydrocarbon profiles within and between species. Here, we report that these two species randomly mated with each other. We did not observe any sexual isolation between species or between strains within species by multiple-choice tests. Significant difference in the courtship index was detected between these two species, but males and females of both species showed no discrimination against heterospecific partners. Significant quantitative variations in cuticular hydrocarbons between these two species were also found, but the cuticular hydrocarbons appear to play a negligible role in both courtship and sexual isolation between these two species. In contrast to the evident postzygotic isolation, the lack of sexual isolation between these two species suggests that the evolution of premating isolation may lag behind that of the intergenomic incompatibility, which might be driven by intragenomic conflicts.
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spelling pubmed-37289472013-08-05 Evidence for no sexual isolation between Drosophila albomicans and D. nasuta Kim, Yong-Kyu Phillips, Dennis R Tao, Yun Ecol Evol Original Research Sexual isolation, the reduced tendency to mate, is one of the reproductive barriers that prevent gene flow between different species. Various species-specific signals during courtship contribute to sexual isolation between species. Drosophila albomicans and D. nasuta are closely related species of the nasuta subgroup within the Drosophila immigrans group and are distributed in allopatry. We analyzed mating behavior and courtship as well as cuticular hydrocarbon profiles within and between species. Here, we report that these two species randomly mated with each other. We did not observe any sexual isolation between species or between strains within species by multiple-choice tests. Significant difference in the courtship index was detected between these two species, but males and females of both species showed no discrimination against heterospecific partners. Significant quantitative variations in cuticular hydrocarbons between these two species were also found, but the cuticular hydrocarbons appear to play a negligible role in both courtship and sexual isolation between these two species. In contrast to the evident postzygotic isolation, the lack of sexual isolation between these two species suggests that the evolution of premating isolation may lag behind that of the intergenomic incompatibility, which might be driven by intragenomic conflicts. Blackwell Publishing Ltd 2013-07 2013-06-03 /pmc/articles/PMC3728947/ /pubmed/23919152 http://dx.doi.org/10.1002/ece3.619 Text en © 2013 The Authors. Ecology and Evolution published by John Wiley & Sons 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
Kim, Yong-Kyu
Phillips, Dennis R
Tao, Yun
Evidence for no sexual isolation between Drosophila albomicans and D. nasuta
title Evidence for no sexual isolation between Drosophila albomicans and D. nasuta
title_full Evidence for no sexual isolation between Drosophila albomicans and D. nasuta
title_fullStr Evidence for no sexual isolation between Drosophila albomicans and D. nasuta
title_full_unstemmed Evidence for no sexual isolation between Drosophila albomicans and D. nasuta
title_short Evidence for no sexual isolation between Drosophila albomicans and D. nasuta
title_sort evidence for no sexual isolation between drosophila albomicans and d. nasuta
topic Original Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3728947/
https://www.ncbi.nlm.nih.gov/pubmed/23919152
http://dx.doi.org/10.1002/ece3.619
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