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Abstract:

Size-related phenotypic variation among second-chromosome karyotypes in Drosophila buzzatii was examined in an Argentinian natural population. For all measured traits (thorax and wing length; wing, head and face width), this inversion polymorphism exhibited a significant and (additive) linear contribution to the phenotypic variance in newly emerged wild flies. The results suggest that only overall body size, and not body shape, is affected. as no karyotypic variation was found for any trait when the effects of differences in within-karyotype size were removed with Burnaby's method. Likewise, in an experiment of longevity selection in the wild, variation in chromosomal frequencies was verified in the direction predicted on the basis of: (i) previous studies on longevity selection for body size in the wild and (ii) the pattern of chromosomal effects we observed on size. The direction of such selection is consistent with a pattern of antagonistic selection detected in previous studies on the inversion polymorphism. © 1995 Kluwer Academic Publishers.

Registro:

Documento: Artículo
Título:An adaptive chromosomal polymorphism affecting size-related traits, and longevity selection in a natural population of Drosophila buzzatii
Autor:Norry, F.M.; Vilardi, J.C.; Fanara, J.J.; Hasson, E.; Rodriguez, C.
Filiación:G.I.B.E., Dept. Cs. Biológicas, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, 1428, Argentina
Palabras clave:Drosophila buzzatii; inversion polymorphism; longevity selection; size/shape-related variation; age; animal; article; body constitution; chromosome; chromosome inversion; Drosophila; gene frequency; genetic polymorphism; genetic selection; genetics; histology; karyotyping; longevity; Age Factors; Animals; Body Constitution; Chromosomes; Drosophila; Gene Frequency; Inversion, Chromosome; Karyotyping; Longevity; Polymorphism, Genetic; Selection (Genetics)
Año:1995
Volumen:96
Número:3
Página de inicio:285
Página de fin:291
DOI: http://dx.doi.org/10.1007/BF01439582
Título revista:Genetica
Título revista abreviado:Genetica
ISSN:00166707
CODEN:GENEA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00166707_v96_n3_p285_Norry

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Citas:

---------- APA ----------
Norry, F.M., Vilardi, J.C., Fanara, J.J., Hasson, E. & Rodriguez, C. (1995) . An adaptive chromosomal polymorphism affecting size-related traits, and longevity selection in a natural population of Drosophila buzzatii. Genetica, 96(3), 285-291.
http://dx.doi.org/10.1007/BF01439582
---------- CHICAGO ----------
Norry, F.M., Vilardi, J.C., Fanara, J.J., Hasson, E., Rodriguez, C. "An adaptive chromosomal polymorphism affecting size-related traits, and longevity selection in a natural population of Drosophila buzzatii" . Genetica 96, no. 3 (1995) : 285-291.
http://dx.doi.org/10.1007/BF01439582
---------- MLA ----------
Norry, F.M., Vilardi, J.C., Fanara, J.J., Hasson, E., Rodriguez, C. "An adaptive chromosomal polymorphism affecting size-related traits, and longevity selection in a natural population of Drosophila buzzatii" . Genetica, vol. 96, no. 3, 1995, pp. 285-291.
http://dx.doi.org/10.1007/BF01439582
---------- VANCOUVER ----------
Norry, F.M., Vilardi, J.C., Fanara, J.J., Hasson, E., Rodriguez, C. An adaptive chromosomal polymorphism affecting size-related traits, and longevity selection in a natural population of Drosophila buzzatii. Genetica. 1995;96(3):285-291.
http://dx.doi.org/10.1007/BF01439582