Genetic structure is determined by stochastic factors in a natural population of Drosophila buzzatii in Argentina

D. buzzatii is a cactophilic species associated with several cactaceae in Argentina. This particular ecological niche implies that this species is faced with a non-uniform environment constituted by discrete and ephemeral breeding sites, which are colonized by a finite number of inseminated females....

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Detalles Bibliográficos
Autores principales:	Vilardi, Juan Cesar, Hasson, Esteban Ruben, Rodríguez, Constantina, Fanara, Juan Jose
Publicado:	1994
Materias:	animal Argentina article artificial insemination chromosome map Drosophila ecology female genetics karyotyping male statistics Animal Chromosome Mapping Ecology Female Insemination Karyotyping Male Stochastic Processes Support, Non-U.S. Gov't
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00166707_v92_n2_p123_Vilardi http://hdl.handle.net/20.500.12110/paper_00166707_v92_n2_p123_Vilardi
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_00166707_v92_n2_p123_Vilardi
record_format	dspace
spelling	paper:paper_00166707_v92_n2_p123_Vilardi2023-06-08T14:38:39Z Genetic structure is determined by stochastic factors in a natural population of Drosophila buzzatii in Argentina Vilardi, Juan Cesar Hasson, Esteban Ruben Rodríguez, Constantina Fanara, Juan Jose animal Argentina article artificial insemination chromosome map Drosophila ecology female genetics karyotyping male statistics Animal Argentina Chromosome Mapping Drosophila Ecology Female Insemination Karyotyping Male Stochastic Processes Support, Non-U.S. Gov't D. buzzatii is a cactophilic species associated with several cactaceae in Argentina. This particular ecological niche implies that this species is faced with a non-uniform environment constituted by discrete and ephemeral breeding sites, which are colonized by a finite number of inseminated females. The genetic consequences of this population structure upon the second chromosome polymorphism were investigated by means of F-statistics in a natural endemic population of Argentina. The present study suggests that differentiation of inversion frequencies in third instar larvae among breeding sites has taken place mainly at random and selection is not operating to determine the structure of this population. The average number of parents breeding on a single pad seems to be similar to the number colonizing Opuntia ficus indica rotting cladodes in Carboneras, a derived population from Spain. There is no significant excess of heterokaryotypes within pads or in the population as a whole. The results obtained in the present study suggest that the potential role of selective versus stochastic factors relative to the among pad heterogeneity in the population here studied is different from that of the Spanish population previously reported. Potential mechanisms responsible for these differences are discussed. © 1994 Kluwer Academic Publishers. Fil:Vilardi, J.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. Fil:Rodriguez, C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Fanara, J.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 1994 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00166707_v92_n2_p123_Vilardi http://hdl.handle.net/20.500.12110/paper_00166707_v92_n2_p123_Vilardi
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	animal Argentina article artificial insemination chromosome map Drosophila ecology female genetics karyotyping male statistics Animal Argentina Chromosome Mapping Drosophila Ecology Female Insemination Karyotyping Male Stochastic Processes Support, Non-U.S. Gov't
spellingShingle	animal Argentina article artificial insemination chromosome map Drosophila ecology female genetics karyotyping male statistics Animal Argentina Chromosome Mapping Drosophila Ecology Female Insemination Karyotyping Male Stochastic Processes Support, Non-U.S. Gov't Vilardi, Juan Cesar Hasson, Esteban Ruben Rodríguez, Constantina Fanara, Juan Jose Genetic structure is determined by stochastic factors in a natural population of Drosophila buzzatii in Argentina
topic_facet	animal Argentina article artificial insemination chromosome map Drosophila ecology female genetics karyotyping male statistics Animal Argentina Chromosome Mapping Drosophila Ecology Female Insemination Karyotyping Male Stochastic Processes Support, Non-U.S. Gov't
description	D. buzzatii is a cactophilic species associated with several cactaceae in Argentina. This particular ecological niche implies that this species is faced with a non-uniform environment constituted by discrete and ephemeral breeding sites, which are colonized by a finite number of inseminated females. The genetic consequences of this population structure upon the second chromosome polymorphism were investigated by means of F-statistics in a natural endemic population of Argentina. The present study suggests that differentiation of inversion frequencies in third instar larvae among breeding sites has taken place mainly at random and selection is not operating to determine the structure of this population. The average number of parents breeding on a single pad seems to be similar to the number colonizing Opuntia ficus indica rotting cladodes in Carboneras, a derived population from Spain. There is no significant excess of heterokaryotypes within pads or in the population as a whole. The results obtained in the present study suggest that the potential role of selective versus stochastic factors relative to the among pad heterogeneity in the population here studied is different from that of the Spanish population previously reported. Potential mechanisms responsible for these differences are discussed. © 1994 Kluwer Academic Publishers.
author	Vilardi, Juan Cesar Hasson, Esteban Ruben Rodríguez, Constantina Fanara, Juan Jose
author_facet	Vilardi, Juan Cesar Hasson, Esteban Ruben Rodríguez, Constantina Fanara, Juan Jose
author_sort	Vilardi, Juan Cesar
title	Genetic structure is determined by stochastic factors in a natural population of Drosophila buzzatii in Argentina
title_short	Genetic structure is determined by stochastic factors in a natural population of Drosophila buzzatii in Argentina
title_full	Genetic structure is determined by stochastic factors in a natural population of Drosophila buzzatii in Argentina
title_fullStr	Genetic structure is determined by stochastic factors in a natural population of Drosophila buzzatii in Argentina
title_full_unstemmed	Genetic structure is determined by stochastic factors in a natural population of Drosophila buzzatii in Argentina
title_sort	genetic structure is determined by stochastic factors in a natural population of drosophila buzzatii in argentina
publishDate	1994
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00166707_v92_n2_p123_Vilardi http://hdl.handle.net/20.500.12110/paper_00166707_v92_n2_p123_Vilardi
work_keys_str_mv	AT vilardijuancesar geneticstructureisdeterminedbystochasticfactorsinanaturalpopulationofdrosophilabuzzatiiinargentina AT hassonestebanruben geneticstructureisdeterminedbystochasticfactorsinanaturalpopulationofdrosophilabuzzatiiinargentina AT rodriguezconstantina geneticstructureisdeterminedbystochasticfactorsinanaturalpopulationofdrosophilabuzzatiiinargentina AT fanarajuanjose geneticstructureisdeterminedbystochasticfactorsinanaturalpopulationofdrosophilabuzzatiiinargentina
_version_	1768543783446642688

Genetic structure is determined by stochastic factors in a natural population of Drosophila buzzatii in Argentina

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