Rapid Divergent Evolution of Male Genitalia Among Populations of Drosophila buzzatii

Increasing evidence from multiple animal systems suggests that genital evolution and diversification are driven by rapid and strong evolutionary forces. Particularly, the morphology of male genital structures is considered to be among the fastest evolving traits in animal groups with internal fertil...

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Autores principales: Soto, I.M., Carreira, V.P., Soto, E.M., Márquez, F., Lipko, P., Hasson, E.
Formato: JOUR
Materias:
Aedeagus
Chromosomal inversion
COI
Drift
Morphological evolution
PST
Animalia
Drosophila buzzatii
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00713260_v40_n3_p395_Soto
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_00713260_v40_n3_p395_Soto
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spelling todo:paper_00713260_v40_n3_p395_Soto2023-10-03T14:53:14Z Rapid Divergent Evolution of Male Genitalia Among Populations of Drosophila buzzatii Soto, I.M. Carreira, V.P. Soto, E.M. Márquez, F. Lipko, P. Hasson, E. Aedeagus Chromosomal inversion COI Drift Morphological evolution PST Animalia Drosophila buzzatii Increasing evidence from multiple animal systems suggests that genital evolution and diversification are driven by rapid and strong evolutionary forces. Particularly, the morphology of male genital structures is considered to be among the fastest evolving traits in animal groups with internal fertilization. In this study, we investigated patterns of male genital variation within and between natural populations of the cactophilic fly Drosophila buzzatii in its original geographic distribution range in the Neotropics. We detected significant morphological differences among populations and distinguished five differentiated groups. Moreover, among population differentiation in genital morphology was associated with the degree of geographic isolation among populations and clearly contrasted with the general homogeneity detected for the putatively neutral mitochondrial gene COI. Integrating our present data with previous molecular population genetic surveys, our results suggest that male genital morphology has rapidly diverged after the recent demographic expansion that D. buzzatii has undergone in the arid zones of South America. Because the "lock and key" hypothesis failed to explain the present pattern, we explored alternative explanations for the observed pattern of genital diversification including drift-facilitated sexual selection. © 2013 Springer Science+Business Media New York. Fil:Soto, I.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Carreira, V.P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Soto, E.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Lipko, P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Hasson, E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00713260_v40_n3_p395_Soto
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Aedeagus
Chromosomal inversion
COI
Drift
Morphological evolution
PST
Animalia
Drosophila buzzatii
spellingShingle Aedeagus
Chromosomal inversion
COI
Drift
Morphological evolution
PST
Animalia
Drosophila buzzatii
Soto, I.M.
Carreira, V.P.
Soto, E.M.
Márquez, F.
Lipko, P.
Hasson, E.
Rapid Divergent Evolution of Male Genitalia Among Populations of Drosophila buzzatii
topic_facet Aedeagus
Chromosomal inversion
COI
Drift
Morphological evolution
PST
Animalia
Drosophila buzzatii
description Increasing evidence from multiple animal systems suggests that genital evolution and diversification are driven by rapid and strong evolutionary forces. Particularly, the morphology of male genital structures is considered to be among the fastest evolving traits in animal groups with internal fertilization. In this study, we investigated patterns of male genital variation within and between natural populations of the cactophilic fly Drosophila buzzatii in its original geographic distribution range in the Neotropics. We detected significant morphological differences among populations and distinguished five differentiated groups. Moreover, among population differentiation in genital morphology was associated with the degree of geographic isolation among populations and clearly contrasted with the general homogeneity detected for the putatively neutral mitochondrial gene COI. Integrating our present data with previous molecular population genetic surveys, our results suggest that male genital morphology has rapidly diverged after the recent demographic expansion that D. buzzatii has undergone in the arid zones of South America. Because the "lock and key" hypothesis failed to explain the present pattern, we explored alternative explanations for the observed pattern of genital diversification including drift-facilitated sexual selection. © 2013 Springer Science+Business Media New York.
format JOUR
author Soto, I.M.
Carreira, V.P.
Soto, E.M.
Márquez, F.
Lipko, P.
Hasson, E.
author_facet Soto, I.M.
Carreira, V.P.
Soto, E.M.
Márquez, F.
Lipko, P.
Hasson, E.
author_sort Soto, I.M.
title Rapid Divergent Evolution of Male Genitalia Among Populations of Drosophila buzzatii
title_short Rapid Divergent Evolution of Male Genitalia Among Populations of Drosophila buzzatii
title_full Rapid Divergent Evolution of Male Genitalia Among Populations of Drosophila buzzatii
title_fullStr Rapid Divergent Evolution of Male Genitalia Among Populations of Drosophila buzzatii
title_full_unstemmed Rapid Divergent Evolution of Male Genitalia Among Populations of Drosophila buzzatii
title_sort rapid divergent evolution of male genitalia among populations of drosophila buzzatii
url http://hdl.handle.net/20.500.12110/paper_00713260_v40_n3_p395_Soto
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