Contrasting population genetic structures using allozymes and the inversion polymorphism in Drosophila buzzatii

Second chromosome inversion and genotypic frequencies at seven allozyme loci, differentially associated with inversions, were determined in seven natural populations of Drosophila buzzatii. The patterns of variation of allozymes and the inversion polymorphisms were significantly different, indicatin...

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Autores principales:	Rodríguez, Constantina, Piccinali, Romina Valeria, Levy, Estrella Mariel, Hasson, Esteban Ruben
Publicado:	2000
Materias:	Allozymes Drosophila buzzatii Inversion polymorphism Population structure allozyme genetic structure polymorphism population genetics
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1010061X_v13_n6_p976_Rodriguez http://hdl.handle.net/20.500.12110/paper_1010061X_v13_n6_p976_Rodriguez
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_1010061X_v13_n6_p976_Rodriguez
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spelling	paper:paper_1010061X_v13_n6_p976_Rodriguez2023-06-08T15:59:24Z Contrasting population genetic structures using allozymes and the inversion polymorphism in Drosophila buzzatii Rodríguez, Constantina Piccinali, Romina Valeria Levy, Estrella Mariel Hasson, Esteban Ruben Allozymes Drosophila buzzatii Inversion polymorphism Population structure allozyme genetic structure polymorphism population genetics Second chromosome inversion and genotypic frequencies at seven allozyme loci, differentially associated with inversions, were determined in seven natural populations of Drosophila buzzatii. The patterns of variation of allozymes and the inversion polymorphisms were significantly different, indicating the role of adaptive differentiation for the latter. Moreover, the patterns of population structure varied among allozyme loci, suggesting the operation of diversifying selection for certain loci. Differentiation was negligible for Leucyl-amino peptidase (Lap) and Peptidase-2 (Pep-2), low to moderate for Aldehyde oxidase (Aldox), Peptidase-1 (Pep-1) and Esterase-1 (Est-1) and high for Esterase-2 (Est-2) and Xanthine dehydrogenase (Xdh). Significant linkage disequilibria were detected between inversions and Aldox, Est-1, Est-2 and Xdh. Multiple regression analyses of inversion and allele frequencies on environmental variables revealed the existence of clines for inversions, Est-1, Est-2, Xdh and Aldox along altitudinal, latitudinal and/or climatic gradients. Tests using conditional allele frequencies showed that Est-1 and Aldox clines could be accounted for by hitchhiking with inversions, whereas natural selection should be invoked to explain the clines observed for Est-2 and Xdh. Fil:Rodriguez, C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Piccinali, R. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Levy, E. 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. 2000 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1010061X_v13_n6_p976_Rodriguez http://hdl.handle.net/20.500.12110/paper_1010061X_v13_n6_p976_Rodriguez
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Allozymes Drosophila buzzatii Inversion polymorphism Population structure allozyme genetic structure polymorphism population genetics
spellingShingle	Allozymes Drosophila buzzatii Inversion polymorphism Population structure allozyme genetic structure polymorphism population genetics Rodríguez, Constantina Piccinali, Romina Valeria Levy, Estrella Mariel Hasson, Esteban Ruben Contrasting population genetic structures using allozymes and the inversion polymorphism in Drosophila buzzatii
topic_facet	Allozymes Drosophila buzzatii Inversion polymorphism Population structure allozyme genetic structure polymorphism population genetics
description	Second chromosome inversion and genotypic frequencies at seven allozyme loci, differentially associated with inversions, were determined in seven natural populations of Drosophila buzzatii. The patterns of variation of allozymes and the inversion polymorphisms were significantly different, indicating the role of adaptive differentiation for the latter. Moreover, the patterns of population structure varied among allozyme loci, suggesting the operation of diversifying selection for certain loci. Differentiation was negligible for Leucyl-amino peptidase (Lap) and Peptidase-2 (Pep-2), low to moderate for Aldehyde oxidase (Aldox), Peptidase-1 (Pep-1) and Esterase-1 (Est-1) and high for Esterase-2 (Est-2) and Xanthine dehydrogenase (Xdh). Significant linkage disequilibria were detected between inversions and Aldox, Est-1, Est-2 and Xdh. Multiple regression analyses of inversion and allele frequencies on environmental variables revealed the existence of clines for inversions, Est-1, Est-2, Xdh and Aldox along altitudinal, latitudinal and/or climatic gradients. Tests using conditional allele frequencies showed that Est-1 and Aldox clines could be accounted for by hitchhiking with inversions, whereas natural selection should be invoked to explain the clines observed for Est-2 and Xdh.
author	Rodríguez, Constantina Piccinali, Romina Valeria Levy, Estrella Mariel Hasson, Esteban Ruben
author_facet	Rodríguez, Constantina Piccinali, Romina Valeria Levy, Estrella Mariel Hasson, Esteban Ruben
author_sort	Rodríguez, Constantina
title	Contrasting population genetic structures using allozymes and the inversion polymorphism in Drosophila buzzatii
title_short	Contrasting population genetic structures using allozymes and the inversion polymorphism in Drosophila buzzatii
title_full	Contrasting population genetic structures using allozymes and the inversion polymorphism in Drosophila buzzatii
title_fullStr	Contrasting population genetic structures using allozymes and the inversion polymorphism in Drosophila buzzatii
title_full_unstemmed	Contrasting population genetic structures using allozymes and the inversion polymorphism in Drosophila buzzatii
title_sort	contrasting population genetic structures using allozymes and the inversion polymorphism in drosophila buzzatii
publishDate	2000
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1010061X_v13_n6_p976_Rodriguez http://hdl.handle.net/20.500.12110/paper_1010061X_v13_n6_p976_Rodriguez
work_keys_str_mv	AT rodriguezconstantina contrastingpopulationgeneticstructuresusingallozymesandtheinversionpolymorphismindrosophilabuzzatii AT piccinalirominavaleria contrastingpopulationgeneticstructuresusingallozymesandtheinversionpolymorphismindrosophilabuzzatii AT levyestrellamariel contrastingpopulationgeneticstructuresusingallozymesandtheinversionpolymorphismindrosophilabuzzatii AT hassonestebanruben contrastingpopulationgeneticstructuresusingallozymesandtheinversionpolymorphismindrosophilabuzzatii
_version_	1768546731929108480

Contrasting population genetic structures using allozymes and the inversion polymorphism in Drosophila buzzatii

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