An adaptive chromosomal polymorphism affecting size-related traits, and longevity selection in a natural population of Drosophila buzzatii
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 contri...
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1995
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00166707_v96_n3_p285_Norry http://hdl.handle.net/20.500.12110/paper_00166707_v96_n3_p285_Norry |
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paper:paper_00166707_v96_n3_p285_Norry2023-06-08T14:38:40Z An adaptive chromosomal polymorphism affecting size-related traits, and longevity selection in a natural population of Drosophila buzzatii Norry, Fabian Marcelo Vilardi, Juan Cesar Fanara, Juan Jose Hasson, Esteban Ruben Rodríguez, Constantina 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) 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. Fil:Norry, F.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Vilardi, J.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. Fil:Rodriguez, C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 1995 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00166707_v96_n3_p285_Norry http://hdl.handle.net/20.500.12110/paper_00166707_v96_n3_p285_Norry |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
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) |
| spellingShingle |
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) Norry, Fabian Marcelo Vilardi, Juan Cesar Fanara, Juan Jose Hasson, Esteban Ruben Rodríguez, Constantina An adaptive chromosomal polymorphism affecting size-related traits, and longevity selection in a natural population of Drosophila buzzatii |
| topic_facet |
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) |
| description |
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. |
| author |
Norry, Fabian Marcelo Vilardi, Juan Cesar Fanara, Juan Jose Hasson, Esteban Ruben Rodríguez, Constantina |
| author_facet |
Norry, Fabian Marcelo Vilardi, Juan Cesar Fanara, Juan Jose Hasson, Esteban Ruben Rodríguez, Constantina |
| author_sort |
Norry, Fabian Marcelo |
| title |
An adaptive chromosomal polymorphism affecting size-related traits, and longevity selection in a natural population of Drosophila buzzatii |
| title_short |
An adaptive chromosomal polymorphism affecting size-related traits, and longevity selection in a natural population of Drosophila buzzatii |
| title_full |
An adaptive chromosomal polymorphism affecting size-related traits, and longevity selection in a natural population of Drosophila buzzatii |
| title_fullStr |
An adaptive chromosomal polymorphism affecting size-related traits, and longevity selection in a natural population of Drosophila buzzatii |
| title_full_unstemmed |
An adaptive chromosomal polymorphism affecting size-related traits, and longevity selection in a natural population of Drosophila buzzatii |
| title_sort |
adaptive chromosomal polymorphism affecting size-related traits, and longevity selection in a natural population of drosophila buzzatii |
| publishDate |
1995 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00166707_v96_n3_p285_Norry http://hdl.handle.net/20.500.12110/paper_00166707_v96_n3_p285_Norry |
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