title: High levels of genetic connectivity among populations of yellowtail snapper, Ocyurus chrysurus (Lutjanidae-Perciformes), in the western South Atlantic revealed through multilocus analysis.
abstract: In the present study, five loci (mitochondrial and nuclear) were sequenced to determine the genetic diversity, population structure, and demographic history of populations of the yellowtail snapper, Ocyurus chrysurus, found along the coast of the western South Atlantic. O. chrysurus is a lutjanid species that is commonly associated with coral reefs and exhibits an ample geographic distribution, and it can therefore be considered a good model for the investigation of phylogeographic patterns and genetic connectivity in marine environments. The results reflected a marked congruence between the mitochondrial and nuclear markers as well as intense gene flow among the analyzed populations, which represent a single genetic stock along the entire coast of Brazil between the states of Pará and Espírito Santo. Our data also showed high levels of genetic diversity in the species (mainly mtDNA), as well a major historic population expansion, which most likely coincided with the sea level oscillations at the end of the Pleistocene. In addition, this species is intensively exploited by commercial fisheries, and data on the genetic structure of its populations will be essential for the development of effective conservation and management plans.
authors.affiliation: Laboratório de Genética Aplicada, Instituto de Estudos Costeiros, Campus Bragança-Universidade Federal do Pará, Bragança, Pará, Brasil.
authors.forename: Raimundo
authors.initials: R
authors.lastname: da Silva
authors.affiliation: Laboratório de Genética Aplicada, Instituto de Estudos Costeiros, Campus Bragança-Universidade Federal do Pará, Bragança, Pará, Brasil.
authors.forename: Ivana
authors.initials: I
authors.lastname: Veneza
authors.affiliation: Laboratório de Genética e Biologia Molecular, Instituto de Estudos Costeiros, Campus Bragança-Universidade Federal do Pará, Bragança, Pará, Brasil.
authors.forename: Iracilda
authors.initials: I
authors.lastname: Sampaio
authors.affiliation: Laboratório de Genética e Biologia Molecular, Instituto de Estudos Costeiros, Campus Bragança-Universidade Federal do Pará, Bragança, Pará, Brasil.
authors.forename: Juliana
authors.initials: J
authors.lastname: Araripe
authors.affiliation: Laboratório de Genética e Biologia Molecular, Instituto de Estudos Costeiros, Campus Bragança-Universidade Federal do Pará, Bragança, Pará, Brasil.
authors.forename: Horacio
authors.initials: H
authors.lastname: Schneider
authors.affiliation: Laboratório de Genética Aplicada, Instituto de Estudos Costeiros, Campus Bragança-Universidade Federal do Pará, Bragança, Pará, Brasil; Laboratório de Genética e Biologia Molecular, Instituto de Estudos Costeiros, Campus Bragança-Universidade Federal do Pará, Bragança, Pará, Brasil.
authors.forename: Grazielle
authors.initials: G
authors.lastname: Gomes
mesh_terms: D000818:Animals; D001267:Atlantic Ocean; D002467:Cell Nucleus / Q000235:genetics; D004272:DNA, Mitochondrial / Q000235:genetics; D051456:Gene Flow; D056426:Genetic Loci / Q000235:genetics*; D014644:Genetic Variation; D010473:Perciformes / Q000145:classification* / Q000235:genetics*; D010802:Phylogeny
chemical_list: D004272:DNA, Mitochondrial