Aedeagal Divergence in Sympatric Populations of Two Sibling Species of Cactophilic Drosophila (Diptera: Drosophilidae): Evidence of Character Displacement?

Aedeagal morphology of two sibling cactophilic species, Drosophila buzzatii Patterson & Wheeler and Drosophila koepferae Fontdevila & Wasserman, was analyzed in nine allopatric and three sympatric locations throughout South America. Morphological differences were detected for both aedeagus s...

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Autor principal:	Soto, Ignacio M.
Publicado:	2012
Materias:	Aedeagus geometric morphometrics sexual selection animal Argentina article Drosophila histology male male genital system physiology species differentiation sympatry Animals Genetic Speciation Genitalia, Male Male Sympatry Diptera Drosophila buzzatii Drosophila koepferae Drosophilidae
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1519566X_v41_n3_p207_Soto http://hdl.handle.net/20.500.12110/paper_1519566X_v41_n3_p207_Soto
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_1519566X_v41_n3_p207_Soto
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spelling	paper:paper_1519566X_v41_n3_p207_Soto2023-06-08T16:18:45Z Aedeagal Divergence in Sympatric Populations of Two Sibling Species of Cactophilic Drosophila (Diptera: Drosophilidae): Evidence of Character Displacement? Soto, Ignacio M. Aedeagus geometric morphometrics sexual selection animal Argentina article Drosophila histology male male genital system physiology species differentiation sympatry Animals Argentina Drosophila Genetic Speciation Genitalia, Male Male Sympatry Diptera Drosophila buzzatii Drosophila koepferae Drosophilidae Aedeagal morphology of two sibling cactophilic species, Drosophila buzzatii Patterson & Wheeler and Drosophila koepferae Fontdevila & Wasserman, was analyzed in nine allopatric and three sympatric locations throughout South America. Morphological differences were detected for both aedeagus size and shape between sympatric and allopatric populations of D. buzzatii, despite the significant variability within both groups. Populations of D. buzzatii sympatric with D. koepferae displayed smaller aedeagus than the allopatric ones as well as more differentiated aedeagus shape. The shape differences were non-allometric and mainly consisted in a change of curvature of the dorsal margin of the aedeagus being more pronounced in males from populations sympatric with D. koepferae. It is concluded that aedeagal morphology presented some degree of character displacement in both size and shape in populations of D. buzzatii in sympatry with D. koepferae. These results might suggest the existence of mechanisms of interspecific recognition and hybridization prevention between these species that include the morphology of the male genitalia. © 2012 Sociedade Entomológica do Brasil. Fil:Soto, I.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2012 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1519566X_v41_n3_p207_Soto http://hdl.handle.net/20.500.12110/paper_1519566X_v41_n3_p207_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 geometric morphometrics sexual selection animal Argentina article Drosophila histology male male genital system physiology species differentiation sympatry Animals Argentina Drosophila Genetic Speciation Genitalia, Male Male Sympatry Diptera Drosophila buzzatii Drosophila koepferae Drosophilidae
spellingShingle	Aedeagus geometric morphometrics sexual selection animal Argentina article Drosophila histology male male genital system physiology species differentiation sympatry Animals Argentina Drosophila Genetic Speciation Genitalia, Male Male Sympatry Diptera Drosophila buzzatii Drosophila koepferae Drosophilidae Soto, Ignacio M. Aedeagal Divergence in Sympatric Populations of Two Sibling Species of Cactophilic Drosophila (Diptera: Drosophilidae): Evidence of Character Displacement?
topic_facet	Aedeagus geometric morphometrics sexual selection animal Argentina article Drosophila histology male male genital system physiology species differentiation sympatry Animals Argentina Drosophila Genetic Speciation Genitalia, Male Male Sympatry Diptera Drosophila buzzatii Drosophila koepferae Drosophilidae
description	Aedeagal morphology of two sibling cactophilic species, Drosophila buzzatii Patterson & Wheeler and Drosophila koepferae Fontdevila & Wasserman, was analyzed in nine allopatric and three sympatric locations throughout South America. Morphological differences were detected for both aedeagus size and shape between sympatric and allopatric populations of D. buzzatii, despite the significant variability within both groups. Populations of D. buzzatii sympatric with D. koepferae displayed smaller aedeagus than the allopatric ones as well as more differentiated aedeagus shape. The shape differences were non-allometric and mainly consisted in a change of curvature of the dorsal margin of the aedeagus being more pronounced in males from populations sympatric with D. koepferae. It is concluded that aedeagal morphology presented some degree of character displacement in both size and shape in populations of D. buzzatii in sympatry with D. koepferae. These results might suggest the existence of mechanisms of interspecific recognition and hybridization prevention between these species that include the morphology of the male genitalia. © 2012 Sociedade Entomológica do Brasil.
author	Soto, Ignacio M.
author_facet	Soto, Ignacio M.
author_sort	Soto, Ignacio M.
title	Aedeagal Divergence in Sympatric Populations of Two Sibling Species of Cactophilic Drosophila (Diptera: Drosophilidae): Evidence of Character Displacement?
title_short	Aedeagal Divergence in Sympatric Populations of Two Sibling Species of Cactophilic Drosophila (Diptera: Drosophilidae): Evidence of Character Displacement?
title_full	Aedeagal Divergence in Sympatric Populations of Two Sibling Species of Cactophilic Drosophila (Diptera: Drosophilidae): Evidence of Character Displacement?
title_fullStr	Aedeagal Divergence in Sympatric Populations of Two Sibling Species of Cactophilic Drosophila (Diptera: Drosophilidae): Evidence of Character Displacement?
title_full_unstemmed	Aedeagal Divergence in Sympatric Populations of Two Sibling Species of Cactophilic Drosophila (Diptera: Drosophilidae): Evidence of Character Displacement?
title_sort	aedeagal divergence in sympatric populations of two sibling species of cactophilic drosophila (diptera: drosophilidae): evidence of character displacement?
publishDate	2012
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1519566X_v41_n3_p207_Soto http://hdl.handle.net/20.500.12110/paper_1519566X_v41_n3_p207_Soto
work_keys_str_mv	AT sotoignaciom aedeagaldivergenceinsympatricpopulationsoftwosiblingspeciesofcactophilicdrosophiladipteradrosophilidaeevidenceofcharacterdisplacement
_version_	1768544464716955648

Aedeagal Divergence in Sympatric Populations of Two Sibling Species of Cactophilic Drosophila (Diptera: Drosophilidae): Evidence of Character Displacement?

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