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A morphological trait involved in reproductive isolation between Drosophila sister species is sensitive to temperature

Male genitalia are usually extremely divergent between closely related species, but relatively constant within one species. Here we examine the effect of temperature on the shape of the ventral branches, a male genital structure involved in reproductive isolation, in the sister species Drosophila sa...

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Autores principales: Peluffo, Alexandre E., Hamdani, Mehdi, Vargas‐Valderrama, Alejandra, David, Jean R., Mallard, François, Graner, François, Courtier‐Orgogozo, Virginie
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8216934/
https://www.ncbi.nlm.nih.gov/pubmed/34188829
http://dx.doi.org/10.1002/ece3.7580
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author Peluffo, Alexandre E.
Hamdani, Mehdi
Vargas‐Valderrama, Alejandra
David, Jean R.
Mallard, François
Graner, François
Courtier‐Orgogozo, Virginie
author_facet Peluffo, Alexandre E.
Hamdani, Mehdi
Vargas‐Valderrama, Alejandra
David, Jean R.
Mallard, François
Graner, François
Courtier‐Orgogozo, Virginie
author_sort Peluffo, Alexandre E.
collection PubMed
description Male genitalia are usually extremely divergent between closely related species, but relatively constant within one species. Here we examine the effect of temperature on the shape of the ventral branches, a male genital structure involved in reproductive isolation, in the sister species Drosophila santomea and Drosophila yakuba. We designed a semi‐automatic measurement machine learning pipeline that can reliably identify curvatures and landmarks based on manually digitized contours of the ventral branches. With this method, we observed that temperature does not affect ventral branches in D. yakuba but that in D. santomea ventral branches tend to morph into a D. yakuba‐like shape at lower temperature. We found that male genitalia structures involved in reproductive isolation can be relatively variable within one species and can resemble the shape of closely related species’ genitalia through plasticity to temperature. Our results suggest that reproductive isolation mechanisms can be dependent on the environmental context.
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spelling pubmed-82169342021-06-28 A morphological trait involved in reproductive isolation between Drosophila sister species is sensitive to temperature Peluffo, Alexandre E. Hamdani, Mehdi Vargas‐Valderrama, Alejandra David, Jean R. Mallard, François Graner, François Courtier‐Orgogozo, Virginie Ecol Evol Original Research Male genitalia are usually extremely divergent between closely related species, but relatively constant within one species. Here we examine the effect of temperature on the shape of the ventral branches, a male genital structure involved in reproductive isolation, in the sister species Drosophila santomea and Drosophila yakuba. We designed a semi‐automatic measurement machine learning pipeline that can reliably identify curvatures and landmarks based on manually digitized contours of the ventral branches. With this method, we observed that temperature does not affect ventral branches in D. yakuba but that in D. santomea ventral branches tend to morph into a D. yakuba‐like shape at lower temperature. We found that male genitalia structures involved in reproductive isolation can be relatively variable within one species and can resemble the shape of closely related species’ genitalia through plasticity to temperature. Our results suggest that reproductive isolation mechanisms can be dependent on the environmental context. John Wiley and Sons Inc. 2021-05-25 /pmc/articles/PMC8216934/ /pubmed/34188829 http://dx.doi.org/10.1002/ece3.7580 Text en © 2021 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://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
Peluffo, Alexandre E.
Hamdani, Mehdi
Vargas‐Valderrama, Alejandra
David, Jean R.
Mallard, François
Graner, François
Courtier‐Orgogozo, Virginie
A morphological trait involved in reproductive isolation between Drosophila sister species is sensitive to temperature
title A morphological trait involved in reproductive isolation between Drosophila sister species is sensitive to temperature
title_full A morphological trait involved in reproductive isolation between Drosophila sister species is sensitive to temperature
title_fullStr A morphological trait involved in reproductive isolation between Drosophila sister species is sensitive to temperature
title_full_unstemmed A morphological trait involved in reproductive isolation between Drosophila sister species is sensitive to temperature
title_short A morphological trait involved in reproductive isolation between Drosophila sister species is sensitive to temperature
title_sort morphological trait involved in reproductive isolation between drosophila sister species is sensitive to temperature
topic Original Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8216934/
https://www.ncbi.nlm.nih.gov/pubmed/34188829
http://dx.doi.org/10.1002/ece3.7580
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