Inversion and allozyme polymorphism show contrasting patterns of microgeographical population structure in a natural population of Drosophila buzzatii from Argentina

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Second chromosome inversions and genotypic frequencies at seven allozyme loci were determined in a natural population of the cactophilic species Drosophila buzzatii that uses as breeding sites the necrotic cladodes of the prickly pear Opuntia quimilo and the rotting stems of cardón, Trichocereus ter...

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Autores principales: Fernández Iriarte, P.J., Rodríguez, C., Hasson, E.
Formato: Artículo publishedVersion
Lenguaje:Inglés
Publicado: 2002
Materias:
Allozymes
Cactus hosts
Drosophila
Genetic structure
Inversion polymorphism
Natural selection
allozyme
genetic structure
polymorphism
population structure
Argentina
Cactaceae
Diptera
Drosophila buzzatii
Drosophilidae
Invertebrata
Opuntia
Opuntia quimilo
Pyrus communis
Trichocereus
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_1010061X_v15_n2_p226_FernandezIriarte
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling paperaa:paper_1010061X_v15_n2_p226_FernandezIriarte2023-06-12T16:48:51Z Inversion and allozyme polymorphism show contrasting patterns of microgeographical population structure in a natural population of Drosophila buzzatii from Argentina J. Evol. Biol. 2002;15(2):226-234 Fernández Iriarte, P.J. Rodríguez, C. Hasson, E. Allozymes Cactus hosts Drosophila Genetic structure Inversion polymorphism Natural selection allozyme genetic structure polymorphism population structure Argentina Cactaceae Diptera Drosophila buzzatii Drosophilidae Invertebrata Opuntia Opuntia quimilo Pyrus communis Trichocereus Second chromosome inversions and genotypic frequencies at seven allozyme loci were determined in a natural population of the cactophilic species Drosophila buzzatii that uses as breeding sites the necrotic cladodes of the prickly pear Opuntia quimilo and the rotting stems of cardón, Trichocereus terschekii. Different processes govern the evolutionary fate of inversion and allozyme polymorphisms. A pattern of heterotic balance for inversions seems to be acting uniformly in each breeding site and could depend on different regimes of density-dependent selection within cactus hosts. Patterns of variation of allozymes revealed significant heterogeneity in allele frequencies for Esterase-1 (Est-1) among O. quimilo rots and Aldehyde oxidase (Aldox) and Xanthine dehydrogenase (Xdh) among T. terschekii substrates and showed gene-cactus effects only for Esterase-2 (Est-2). Consistent and significant excesses of homozygotes were detected at both the within-rot and in the total population levels that could be accounted for by diversifying selection among individual breeding sites. Fil:Fernández Iriarte, P.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Rodríguez, C. 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. 2002 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion application/pdf eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_1010061X_v15_n2_p226_FernandezIriarte
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
language Inglés
orig_language_str_mv eng
topic Allozymes
Cactus hosts
Drosophila
Genetic structure
Inversion polymorphism
Natural selection
allozyme
genetic structure
polymorphism
population structure
Argentina
Cactaceae
Diptera
Drosophila buzzatii
Drosophilidae
Invertebrata
Opuntia
Opuntia quimilo
Pyrus communis
Trichocereus
spellingShingle Allozymes
Cactus hosts
Drosophila
Genetic structure
Inversion polymorphism
Natural selection
allozyme
genetic structure
polymorphism
population structure
Argentina
Cactaceae
Diptera
Drosophila buzzatii
Drosophilidae
Invertebrata
Opuntia
Opuntia quimilo
Pyrus communis
Trichocereus
Fernández Iriarte, P.J.
Rodríguez, C.
Hasson, E.
Inversion and allozyme polymorphism show contrasting patterns of microgeographical population structure in a natural population of Drosophila buzzatii from Argentina
topic_facet Allozymes
Cactus hosts
Drosophila
Genetic structure
Inversion polymorphism
Natural selection
allozyme
genetic structure
polymorphism
population structure
Argentina
Cactaceae
Diptera
Drosophila buzzatii
Drosophilidae
Invertebrata
Opuntia
Opuntia quimilo
Pyrus communis
Trichocereus
description Second chromosome inversions and genotypic frequencies at seven allozyme loci were determined in a natural population of the cactophilic species Drosophila buzzatii that uses as breeding sites the necrotic cladodes of the prickly pear Opuntia quimilo and the rotting stems of cardón, Trichocereus terschekii. Different processes govern the evolutionary fate of inversion and allozyme polymorphisms. A pattern of heterotic balance for inversions seems to be acting uniformly in each breeding site and could depend on different regimes of density-dependent selection within cactus hosts. Patterns of variation of allozymes revealed significant heterogeneity in allele frequencies for Esterase-1 (Est-1) among O. quimilo rots and Aldehyde oxidase (Aldox) and Xanthine dehydrogenase (Xdh) among T. terschekii substrates and showed gene-cactus effects only for Esterase-2 (Est-2). Consistent and significant excesses of homozygotes were detected at both the within-rot and in the total population levels that could be accounted for by diversifying selection among individual breeding sites.
format Artículo
Artículo
publishedVersion
author Fernández Iriarte, P.J.
Rodríguez, C.
Hasson, E.
author_facet Fernández Iriarte, P.J.
Rodríguez, C.
Hasson, E.
author_sort Fernández Iriarte, P.J.
title Inversion and allozyme polymorphism show contrasting patterns of microgeographical population structure in a natural population of Drosophila buzzatii from Argentina
title_short Inversion and allozyme polymorphism show contrasting patterns of microgeographical population structure in a natural population of Drosophila buzzatii from Argentina
title_full Inversion and allozyme polymorphism show contrasting patterns of microgeographical population structure in a natural population of Drosophila buzzatii from Argentina
title_fullStr Inversion and allozyme polymorphism show contrasting patterns of microgeographical population structure in a natural population of Drosophila buzzatii from Argentina
title_full_unstemmed Inversion and allozyme polymorphism show contrasting patterns of microgeographical population structure in a natural population of Drosophila buzzatii from Argentina
title_sort inversion and allozyme polymorphism show contrasting patterns of microgeographical population structure in a natural population of drosophila buzzatii from argentina
publishDate 2002
url http://hdl.handle.net/20.500.12110/paper_1010061X_v15_n2_p226_FernandezIriarte
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