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| D'Ávila,Marícia F.; Garcia,Rosane N.; Loreto,Elgion L. S.; Valente,Vera Lúcia da S.. |
| Drosophila willistoni (Sturtevant, 1916) is a species of the willistoni group of Drosophila having wide distribution from the South of USA (Florida) and Mexico to the North of Argentina. It has been subject of many evolutionary studies within the group, due to its considerable ability to successfully occupy a wide range of environments and also because of its great genetic variability expressed by different markers. The D. willistoni 17A2 strain was collected in 1991 in the state of Rio Grande do Sul, Brazil (30°05'S, 51°39'W), and has been maintained since then at the Drosophila laboratory of UFRGS. Different to the other D. willistoni strains maintained in the laboratory, the 17A2 strain spontaneously produced mutant males white-like (white eyes) and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: D. willistoni; 17A2 strain; Temperature stress; Genetic variability; Hypermutability. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212008000300009 |
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| Garcia,Ana Cristina L.; Valiati,Victor Hugo; Gottschalk,Marco S.; Rohde,Cláudia; Valente,Vera Lúcia da S.. |
| Drosophila paulistorum Dobzhansky & Pavan, 1949 had initially been considered absent in anthropogenically disturbed environments, but in 1985 the detection of the species in Porto Alegre city, southern Brazil, suggested its potential to colonize new habitats and laid the foundations for ecologic studies on this species' populations. This study followed the variations in D. paulistorum populations in this town almost 20 years after its first local record. Drosophilid specimens were collected in sites with different urbanization grades and the results point to the expressive decline in D. paulistorum populations in Porto Alegre. This decline may be linked to urban growth and to naturally driven population decline, as imputed to climatic changes like... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biological invasion; Colonization; Drosophila paulistorum; Urban ecology; Zaprionus indianus. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212008000300007 |
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