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| Rampasso,Augusto Santos; Vilela,Carlos Ribeiro. |
| ABSTRACT A yellow-bodied male appeared spontaneously in an isofemale line of Drosophila nappae established from a wild-caught female collected at the Forest Reserve of the Instituto de Biociências da Universidade de São Paulo, Cidade Universitária "Armando de Salles Oliveira", São Paulo city, state of São Paulo, Brazil. This is the first mutation found in D. nappae, a species belonging to the tripunctata group. The yellow male was isolated and individually crossed to two wild-type (brown-colored) virgin females from the same generation, yielding numerous offspring. All F1 individuals were wild-type, but the phenotypes yielded in the F2 generation were wild-type females, and both wild-type and yellow-bodied males. The latter yellow male mutants backcrossed... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Recessive; São Paulo; Tripunctata group; X-linked; Yellow. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262017000200111 |
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| Ananina,Galina; Peixoto,Alexandre A.; Bitner-Mathé,Blanche C.; Souza,Wilma N.; Silva,Luciano Basso da; Valente,Vera L.S.; Klaczko,Louis B.. |
| The most polymorphic chromosome for inversions in Drosophila mediopunctata is the chromosome II, where 17 inversions have been found, eight of which occurring in the distal region and nine in the proximal region. We present an analysis of the chromosome II inversion polymorphism with respect to seasonal, altitudinal and latitudinal variation. In D. mediopunctata from the Parque Nacional do Itatiaia (southeastern Brazil), the frequencies of three of the distal inversions (namely DA, DS, and DP) vary seasonally. These inversions also show altitudinal clines in their frequencies. This microgeographic pattern was not observed on a macrogeographic scale. D. mediopunctata from Porto Alegre are less polymorphic for inversions than other populations, the most... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cline; Microgeographic variation; Temperature; Tripunctata group; Brazil. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572004000100011 |
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| Vilela,Carlos R.; Valente,Vera L. S.; Basso-da-Silva,Luciano. |
| Drosophila nappae sp. nov. , belonging to the subgroup I of the Drosophila tripunctata species group of the subgenus Drosophila, is described from flies of one strain established from several females collected from July 1994 through April 1995 at Morro Santana, Porto Alegre, state of Rio Grande do Sul, Brazil. This species has been misidentified during the past fifty years as Drosophila angustibucca (sensu Frota-Pessoa, 1954; non Duda, 1925, described from Costa Rica). Illustrations of male and female terminalia are also provided. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brazil; Neotropical region; New species; Paraguay; Tripunctata group. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262004000200012 |
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