Evolutionary Genetics of Drosophila Mediopunctata |
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Authors: | Louis Bernard Klaczko |
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Institution: | 1. Departamento de Genética e Evolu??o, Instituto de Biologia, Universidade Estadual de Campinas, UNICAMP, Cx. Postal 6109, 13083-970, Campinas, SP, Brazil
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Abstract: | Drosophila mediopunctata belongs to the tripunctata group, which is the second largest Neotropical group of Drosophila with 64 species described. Here I review the work done with this forest dwelling species, and some applications of the methods
developed using it as a model organism, to other species. Specifically I look at: the phylogenetic status of the tripunctata group and its relation with other groups in the Hirtodrosophila-immigrans radiation; D. mediopunctata’s chromosome inversion polymorphism (altitudinal cline of frequencies and evidences of selection); the morphological variation
of the wing and the development and applications of the ellipse method to describe the morphology of the wing; the variation
on the number of aristal branches; the genetic basis of the polychromatism present in D. mediopunctata and its association with chromosome inversions; the sex-ratio trait and its use in the demonstration of Fisher’s principle; and, finally, the finding of the transposable P-element in this species.
This paper is respectfully dedicated to Prof. Sergio Olavo Pinto da Costa whose help was decisive in the initial stages of
our work. |
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Keywords: | adaptation color polymorphism Drosophila mediopunctata genotype×environment interaction molecular phylogeny morphometry tripunctata |
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