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Abstract:

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.

Registro:

Documento: Artículo
Título:Aedeagal Divergence in Sympatric Populations of Two Sibling Species of Cactophilic Drosophila (Diptera: Drosophilidae): Evidence of Character Displacement?
Autor:Soto, I.M.
Filiación:Instituto de Ecología, Genética y Evolución de Buenos Aires, IEGEBA-CONICET, Depto de Ecología, Genética y Evolución, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria Pab. II, C1428EHA, Buenos Aires, Argentina
Palabras clave: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
Año:2012
Volumen:41
Número:3
Página de inicio:207
Página de fin:213
DOI: http://dx.doi.org/10.1007/s13744-012-0028-x
Título revista:Neotropical Entomology
Título revista abreviado:Neotrop. Entomol.
ISSN:1519566X
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1519566X_v41_n3_p207_Soto

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Citas:

---------- APA ----------
(2012) . Aedeagal Divergence in Sympatric Populations of Two Sibling Species of Cactophilic Drosophila (Diptera: Drosophilidae): Evidence of Character Displacement?. Neotropical Entomology, 41(3), 207-213.
http://dx.doi.org/10.1007/s13744-012-0028-x
---------- CHICAGO ----------
Soto, I.M. "Aedeagal Divergence in Sympatric Populations of Two Sibling Species of Cactophilic Drosophila (Diptera: Drosophilidae): Evidence of Character Displacement?" . Neotropical Entomology 41, no. 3 (2012) : 207-213.
http://dx.doi.org/10.1007/s13744-012-0028-x
---------- MLA ----------
Soto, I.M. "Aedeagal Divergence in Sympatric Populations of Two Sibling Species of Cactophilic Drosophila (Diptera: Drosophilidae): Evidence of Character Displacement?" . Neotropical Entomology, vol. 41, no. 3, 2012, pp. 207-213.
http://dx.doi.org/10.1007/s13744-012-0028-x
---------- VANCOUVER ----------
Soto, I.M. Aedeagal Divergence in Sympatric Populations of Two Sibling Species of Cactophilic Drosophila (Diptera: Drosophilidae): Evidence of Character Displacement?. Neotrop. Entomol. 2012;41(3):207-213.
http://dx.doi.org/10.1007/s13744-012-0028-x