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Temporal and spatial variation of inversion polymorphism in two natural populations of Drosophila buzzatii

Fernández Iriarte, P.J. - Levy, E. - Devincenzi, D. - Rodríguez, C. - Fanara, J.J. - Hasson, E.
   
Fecha:
1999
Tipo de documento: 
info:eu-repo/semantics/article
info:ar-repo/semantics/artículo
info:eu-repo/semantics/publishedVersion
Formato:
application/pdf
Temas:
animal tissue - article - chromosome inversion - Drosophila - environment - genetic drift - genetic heterogeneity - genetic polymorphism - genetic variability - nonhuman - population genetics - Animals - Drosophila - Environment - Inversion, Chromosome - Karyotyping - Models, Genetic - Models, Statistical - Polymorphism, Genetic - Variation (Genetics) - Animalia - Drosophila buzzatii - Opuntia
Descripción:
The inversion polymorphism of the cactophilic fly Drosophila buzzatii was studied in two natural populations. We assessed the temporal changes and microspatial population structure. We observed a significant increase in the frequency of arrangement 2J at the expense of 2ST in both populations. These gene arrangements appear to affect the life-history of flies differently. Environmental heterogeneity explains the karyotype coexistence in nature. The analysis of population structure showed that differentiation of inversion frequencies among individual breeding sites, the rotting clacodes of Opuntia vulgaris, was highly significant. The karyotypic frequencies did not depart significantly from Hardy-Weinberg expectations, neither in individual rots nor in the total population. These results suggest that the observed population structure can be easily accounted by random genetic drift.
Fil:Fernández Iriarte, P.J. 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:Rodríguez, 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.
Fil:Hasson, E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
Fuente:
Hereditas 1999;131(2):93-99
Identificador:
http://hdl.handle.net/20.500.12110/paper_00180661_v131_n2_p93_FernandezIriarte
http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_00180661_v131_n2_p93_FernandezIriarte_oai
Derechos:
info:eu-repo/semantics/openAccess

Cita bibliográfica:

Fernández Iriarte, P.J. ; Levy, E. ; Devincenzi, D. ; et al. (1999).  Temporal and spatial variation of inversion polymorphism in two natural populations of Drosophila buzzatii.  (info:eu-repo/semantics/article).  [consultado:  ] Disponible en el Repositorio Digital Institucional de la Universidad de Buenos Aires:  <http://hdl.handle.net/20.500.12110/paper_00180661_v131_n2_p93_FernandezIriarte>