title: Lack of Spatial Subdivision for the Snapper Lutjanus purpureus (Lutjanidae - Perciformes) from Southwest Atlantic Based on Multi-Locus Analyses.
abstract: The Caribbean snapper Lutjanus purpureus is a marine species fish commonly found associated with rocky seabeds and is widely distributed along of Western Atlantic. Data on stock delineation and stock recognition are essential for establishing conservation measures for commercially fished species. However, few studies have investigated the population genetic structure of this economically valuable species, and previous studies (based on only a portion of the mitochondrial DNA) provide an incomplete picture. The present study used a multi-locus approach (12 segments of mitochondrial and nuclear DNA) to elucidate the levels of genetic diversity and genetic connectivity of L. purpureus populations and their demographic history. L. purpureus has high levels of genetic diversity, which probably implies in high effective population sizes values for the species. The data show that this species is genetically homogeneous throughout the geographic region analyzed, most likely as a result of dispersal during larval phase. Regarding demographic history, a historical population growth event occurred, likely due to sea level changes during the Pleistocene.
authors.affiliation: Laboratório de Genética Aplicada, Campus Bragança, Universidade Federal do Pará, Bragança, Pará, Brasil.
authors.forename: Raimundo
authors.initials: R
authors.lastname: da Silva
authors.affiliation: Laboratório de Genética e Biologia Molecular, 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, Campus Bragança, Universidade Federal do Pará, Bragança, Pará, Brasil.
authors.forename: Horacio
authors.initials: H
authors.lastname: Schneider
authors.affiliation: Laboratório de Genética Aplicada, Campus Bragança, Universidade Federal do Pará, Bragança, Pará, Brasil.
authors.forename: Grazielle
authors.identifier: http://orcid.org/0000-0002-3003-7272
authors.initials: G
authors.lastname: Gomes
mesh_terms: D000818:Animals; D001267:Atlantic Ocean; D030541:Databases, Genetic; D014644:Genetic Variation; D005828:Genetics, Population; D006239:Haplotypes; D058885:Multilocus Sequence Typing; D010473:Perciformes / Q000145:classification* / Q000235:genetics*; D010802:Phylogeny; D011157:Population Dynamics; D040641:Quantitative Trait Loci; D062206:Spatial Analysis