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Urbanization and chromosomal polymorphism of Drosophila nebulosa

Cristina B.C. Bonorino^I; Vera Lucia S. Valente^I; Sidia M. Callegari-Jacques^I,II

^IDepartamento de Genética
^IIDepartamento de Estatística, Universidade Federes do Rio Grande do Sul, Caixa Postes 15053, 91501-970 Porto Alegre, RS, Brasil. Send correspondence to V.L.S.V.

ABSTRACT

The chromosomes polymorphism of one wild and eight urban populations of Drosophila nebulosa from Porto Alegre, in Southern Brazil, were studied in order to verify the relationship with the degree of urbanization of the sampling sites. The results suggest that the polymorphism estimates are not related to the urbanization zones defined for the city. Probable cor^relations with microenvironmentes characteristics of the sampling sites are discussed.

Keywords: Chromosomal polymorphism; Drosophila nebulosa.

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