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High levels of genetic connectivity among populations of yellowtail snapper, Ocyurus chrysurus (Lutjanidae-Perciformes), in the western South Atlantic revealed through multilocus analysis.

da Silva R, Veneza I, Sampaio I, Araripe J, Schneider H, Gomes G - PLoS ONE (2015)

Bottom Line: 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.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.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.

View Article: PubMed Central - PubMed

Affiliation: Laboratório de Genética Aplicada, Instituto de Estudos Costeiros, Campus Bragança-Universidade Federal do Pará, Bragança, Pará, Brasil.

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.

Show MeSH
Map of collection locations for the present study.Distribution of the localities on the coast of Brazil from which the Ocyurus chrysurus specimens were collected for the present study, as well as location of Belize, previously sampled by Vasconcellos et al.[16].
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pone.0122173.g001: Map of collection locations for the present study.Distribution of the localities on the coast of Brazil from which the Ocyurus chrysurus specimens were collected for the present study, as well as location of Belize, previously sampled by Vasconcellos et al.[16].

Mentions: Specimens from a total of 170 O. chrysurus adults were collected from eight localities on the coast of Brazil, between 2007 and 2012, in the states of Pará, Maranhão, Ceará, Rio Grande do Norte, Paraíba, Pernambuco, Bahia, and Espírito Santo (Fig. 1). The tissues were obtained from commercial fishing ports (obtained from the near-shore artisanal fishery) and the fishing with rafts, performed by local fisherman. The specimens were identified based on the specific literature [10,18].


High levels of genetic connectivity among populations of yellowtail snapper, Ocyurus chrysurus (Lutjanidae-Perciformes), in the western South Atlantic revealed through multilocus analysis.

da Silva R, Veneza I, Sampaio I, Araripe J, Schneider H, Gomes G - PLoS ONE (2015)

Map of collection locations for the present study.Distribution of the localities on the coast of Brazil from which the Ocyurus chrysurus specimens were collected for the present study, as well as location of Belize, previously sampled by Vasconcellos et al.[16].
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4359153&req=5

pone.0122173.g001: Map of collection locations for the present study.Distribution of the localities on the coast of Brazil from which the Ocyurus chrysurus specimens were collected for the present study, as well as location of Belize, previously sampled by Vasconcellos et al.[16].
Mentions: Specimens from a total of 170 O. chrysurus adults were collected from eight localities on the coast of Brazil, between 2007 and 2012, in the states of Pará, Maranhão, Ceará, Rio Grande do Norte, Paraíba, Pernambuco, Bahia, and Espírito Santo (Fig. 1). The tissues were obtained from commercial fishing ports (obtained from the near-shore artisanal fishery) and the fishing with rafts, performed by local fisherman. The specimens were identified based on the specific literature [10,18].

Bottom Line: 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.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.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.

View Article: PubMed Central - PubMed

Affiliation: Laboratório de Genética Aplicada, Instituto de Estudos Costeiros, Campus Bragança-Universidade Federal do Pará, Bragança, Pará, Brasil.

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.

Show MeSH