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Abstract:

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.

Registro:

Documento: Artículo
Título:Genetic structure is determined by stochastic factors in a natural population of Drosophila buzzatii in Argentina
Autor:Vilardi, J.C.; Hasson, E.; Rodriguez, C.; Fanara, J.J.
Filiación:Lab. Genetica de Poblaciones, Depto. Cs. Biologicas, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires, 1428, Argentina
G.I.B.E. Depto. Cs. Biologicas, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires, 1428, Argentina
Palabras clave: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
Año:1994
Volumen:92
Número:2
Página de inicio:123
Página de fin:128
DOI: http://dx.doi.org/10.1007/BF00163761
Título revista:Genetica
Título revista abreviado:Genetica
ISSN:00166707
CODEN:GENEA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00166707_v92_n2_p123_Vilardi

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Citas:

---------- APA ----------
Vilardi, J.C., Hasson, E., Rodriguez, C. & Fanara, J.J. (1994) . Genetic structure is determined by stochastic factors in a natural population of Drosophila buzzatii in Argentina. Genetica, 92(2), 123-128.
http://dx.doi.org/10.1007/BF00163761
---------- CHICAGO ----------
Vilardi, J.C., Hasson, E., Rodriguez, C., Fanara, J.J. "Genetic structure is determined by stochastic factors in a natural population of Drosophila buzzatii in Argentina" . Genetica 92, no. 2 (1994) : 123-128.
http://dx.doi.org/10.1007/BF00163761
---------- MLA ----------
Vilardi, J.C., Hasson, E., Rodriguez, C., Fanara, J.J. "Genetic structure is determined by stochastic factors in a natural population of Drosophila buzzatii in Argentina" . Genetica, vol. 92, no. 2, 1994, pp. 123-128.
http://dx.doi.org/10.1007/BF00163761
---------- VANCOUVER ----------
Vilardi, J.C., Hasson, E., Rodriguez, C., Fanara, J.J. Genetic structure is determined by stochastic factors in a natural population of Drosophila buzzatii in Argentina. Genetica. 1994;92(2):123-128.
http://dx.doi.org/10.1007/BF00163761