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Analysis by RAPD of the genetic structure of Astyanax altiparanae (Pisces, Characiformes) in reservoirs on the Paranapanema River, Brazil
Leuzzi, Maria Sueli Papa; Almeida, Fernanda Simões de; Orsi, Mário Luís; Sodré, Leda Maria Koelblinger.
  • Leuzzi, Maria Sueli Papa; Universidade Estadual de Londrina. Departamento de Biologia Geral. Laboratório de Marcadores Moleculares em Peixes e Ecologia de Abelhas. Londrina. BR
  • Almeida, Fernanda Simões de; Universidade Estadual de Londrina. Departamento de Biologia Geral. Laboratório de Marcadores Moleculares em Peixes e Ecologia de Abelhas. Londrina. BR
  • Orsi, Mário Luís; Universidade Estadual de Londrina. Museu de Zoologia. Departamento de Biologia Animal e Vegetal. Londrina. BR
  • Sodré, Leda Maria Koelblinger; Universidade Estadual de Londrina. Departamento de Biologia Geral. Laboratório de Marcadores Moleculares em Peixes e Ecologia de Abelhas. Londrina. BR
Genet. mol. biol ; 27(3): 355-362, Sept. 2004. ilus, tab, graf
Article Dans Anglais | LILACS | ID: lil-366180
RESUMO
In this study, the RAPD technique was used to analyze the genetic structure of populations of the fish Astyanax altiparanae (Characidae, Tetragonopterinae) living in the lower, middle and upper Paranapanema River, Brazil. The aim was to assess this structure regarding fish handling and conservation programs. The genetic variability (P) was found to be 42.64 percent, 75 percent and 75 percent in the low, middle and upper reaches, respectively. The dendrogram of genetic similarity, obtained by comparative analysis of the sets of samples from the three sites, showed the formation of three clusters. All of the genetic parameters used indicate that the population in the lower Paranapanema is genetically different from those in the middle and upper sections. The theta P test shows that the low Paranapanema is highly differentiated from the middle (0.2813) and upper (0.2912) Paranapanema, while the differentiation between the last two is moderate (0.0895). The data obtained in the present work suggest that recolonization and conservation studies should not be focused on the species A. altiparanae as such, but on the conservation units, because they are the genetically differentiated populations.
Sujets)
Texte intégral: Disponible Indice: LILAS (Amériques) Sujet Principal: Technique RAPD / Poissons Pays comme sujet: Amérique du Sud / Brésil langue: Anglais Texte intégral: Genet. mol. biol Thème du journal: Génétique Année: 2004 Type: Article Pays d'affiliation: Brésil Institution/Pays d'affiliation: Universidade Estadual de Londrina/BR

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Texte intégral: Disponible Indice: LILAS (Amériques) Sujet Principal: Technique RAPD / Poissons Pays comme sujet: Amérique du Sud / Brésil langue: Anglais Texte intégral: Genet. mol. biol Thème du journal: Génétique Année: 2004 Type: Article Pays d'affiliation: Brésil Institution/Pays d'affiliation: Universidade Estadual de Londrina/BR