Inversion polymorphism, longevity, and body size in a natural population of Drosophila buzzatii
In this study we present the results of an analysis of differential longevity associated with Drosophila buzzatii second chromosome inversion karyotypes based on the assessment of more than 1000 individuals collected in a natural population. Comparisons of inversion frequencies between emerged and b...
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1999
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paper:paper_00143820_v53_n2_p612_Rodriguez2023-06-08T14:37:00Z Inversion polymorphism, longevity, and body size in a natural population of Drosophila buzzatii Rodríguez, Constantina Fanara, Juan Jose Hasson, Esteban Ruben Body size Drosophila Inversion polymorphism Longevity body size longevity population genetics Diptera Drosophila buzzatii Drosophilidae In this study we present the results of an analysis of differential longevity associated with Drosophila buzzatii second chromosome inversion karyotypes based on the assessment of more than 1000 individuals collected in a natural population. Comparisons of inversion frequencies between emerged and bait-collected flies showed hot only that inversion arrangements were associated with differential longevity, but also that selection was sex specific. Because each individual fly was scored for thorax length and karyotype, we were able to show that longevity selection favoring larger flies coupled with the average effect of inversions on thorax length can account for the change of inversion frequencies due to longevity in females. The observed genotypic-by-sex interaction could be an important mechanism involved in the maintenance of the polymorphism. Arrangement 2Jz3, which was shown to impaired fecundity in two independent previous studies, exhibited a positive effect on longevity. This pattern of negative pleiotropy may be another plausible mechanism accounting for the maintenance of the polymorphism. 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. 1999 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00143820_v53_n2_p612_Rodriguez http://hdl.handle.net/20.500.12110/paper_00143820_v53_n2_p612_Rodriguez |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Body size Drosophila Inversion polymorphism Longevity body size longevity population genetics Diptera Drosophila buzzatii Drosophilidae |
| spellingShingle |
Body size Drosophila Inversion polymorphism Longevity body size longevity population genetics Diptera Drosophila buzzatii Drosophilidae Rodríguez, Constantina Fanara, Juan Jose Hasson, Esteban Ruben Inversion polymorphism, longevity, and body size in a natural population of Drosophila buzzatii |
| topic_facet |
Body size Drosophila Inversion polymorphism Longevity body size longevity population genetics Diptera Drosophila buzzatii Drosophilidae |
| description |
In this study we present the results of an analysis of differential longevity associated with Drosophila buzzatii second chromosome inversion karyotypes based on the assessment of more than 1000 individuals collected in a natural population. Comparisons of inversion frequencies between emerged and bait-collected flies showed hot only that inversion arrangements were associated with differential longevity, but also that selection was sex specific. Because each individual fly was scored for thorax length and karyotype, we were able to show that longevity selection favoring larger flies coupled with the average effect of inversions on thorax length can account for the change of inversion frequencies due to longevity in females. The observed genotypic-by-sex interaction could be an important mechanism involved in the maintenance of the polymorphism. Arrangement 2Jz3, which was shown to impaired fecundity in two independent previous studies, exhibited a positive effect on longevity. This pattern of negative pleiotropy may be another plausible mechanism accounting for the maintenance of the polymorphism. |
| author |
Rodríguez, Constantina Fanara, Juan Jose Hasson, Esteban Ruben |
| author_facet |
Rodríguez, Constantina Fanara, Juan Jose Hasson, Esteban Ruben |
| author_sort |
Rodríguez, Constantina |
| title |
Inversion polymorphism, longevity, and body size in a natural population of Drosophila buzzatii |
| title_short |
Inversion polymorphism, longevity, and body size in a natural population of Drosophila buzzatii |
| title_full |
Inversion polymorphism, longevity, and body size in a natural population of Drosophila buzzatii |
| title_fullStr |
Inversion polymorphism, longevity, and body size in a natural population of Drosophila buzzatii |
| title_full_unstemmed |
Inversion polymorphism, longevity, and body size in a natural population of Drosophila buzzatii |
| title_sort |
inversion polymorphism, longevity, and body size in a natural population of drosophila buzzatii |
| publishDate |
1999 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00143820_v53_n2_p612_Rodriguez http://hdl.handle.net/20.500.12110/paper_00143820_v53_n2_p612_Rodriguez |
| work_keys_str_mv |
AT rodriguezconstantina inversionpolymorphismlongevityandbodysizeinanaturalpopulationofdrosophilabuzzatii AT fanarajuanjose inversionpolymorphismlongevityandbodysizeinanaturalpopulationofdrosophilabuzzatii AT hassonestebanruben inversionpolymorphismlongevityandbodysizeinanaturalpopulationofdrosophilabuzzatii |
| _version_ |
1768544349485793280 |