Low Satellite DNA Variability in Natural Populations of Drosophila antonietae Involved in Different Evolutionary Events

Autor(es)

Franco, Fernando Faria ^[1] ; Sene, Fabio Melo ^{[2, 3]} ; Manfrin, Maura Helena ^{[2, 3]}

Afiliação do(s) autor(es)

^[1] Univ Fed Sao Carlos, BR-18052780 Sorocaba - Brazil

^[2] Univ Sao Paulo, Fac Med Ribeirao Preto, Dept Genet, Ribeirao Preto - Brazil

^[3] Univ Sao Paulo, Fac Filosofia Ciencias & Letras Ribeirao Preto, Dept Biol, BR-14049 Ribeirao Preto - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF HEREDITY; v. 101, n. 5, p. 650-656, SEP-OCT 2010.
• Citações Web of Science: 1

Resumo

Drosophila antonietae is a cactophilic species that is found in the mesophilic forest of the Parana'-Paraguay river basin and in the dunes of the South Atlantic coast of Brazil. Although the genetic structure of the Parana'-Paraguay river basin populations has already been established, the relationship between these populations and those on the Atlantic coast is controversial. In this study, we compared 33 repetitive units of pBuM-2 satellite DNA isolated from individuals from 8 populations of D. antonietae in these geographic regions, including some populations found within a contact zone with the closely related D. serido. The pBuM-2 sequences showed low interpopulational variability. This result was interpreted as a consequence of both gene flow among the populations and unequal crossing over promoting homogenization of the tandem arrays. The results presented here, together with those of previous studies, highlight the use of pBuM-2 for solving taxonomic conflicts within the D. buzzatii species cluster. (AU)

• Processo FAPESP: 05/51780-0 - História evolutiva do cluster Drosophila buzzatii (grupo repleta): eventos históricos e diversificação de espécies no Nordeste do Brasil
• Beneficiário: Fernando de Faria Franco
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 03/05031-0 - História evolutiva e estrutura populacional de espécies de Drosophila cactófilas do cluster buzzatii (Diptera: Drosophilidae)
• Beneficiário: Maura Helena Manfrin
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 04/08565-8 - Som e imagem e suas implicações no estudo genético-evolutivo em Drosophila
• Beneficiário: Fábio de Melo Sene
• Modalidade de apoio: Auxílio à Pesquisa - Regular