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

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 sp...

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Bibliographic Details
Published in:PloS one 2015-03, Vol.10 (3), p.e0122173-e0122173
Main Authors: da Silva, Raimundo, Veneza, Ivana, Sampaio, Iracilda, Araripe, Juliana, Schneider, Horacio, Gomes, Grazielle
Format: Article
Language:English
Subjects:
Analysis
Animals
Atlantic Ocean
Biodiversity
Cell Nucleus - genetics
Coastal environments
Commercial fishing
Connectivity
Conservation
Coral reefs
Demographics
DNA, Mitochondrial - genetics
Ecosystems
Fish
Fisheries
Fisheries management
Fishing
Gene Flow
Genetic diversity
Genetic Loci - genetics
Genetic structure
Genetic Variation
Geographical distribution
Laboratories
Lutjanidae
Marine environment
Mitochondria
Mitochondrial DNA
Ocyurus chrysurus
Offshore structures
Oscillations
Perciformes
Perciformes - classification
Perciformes - genetics
Phylogeny
Phylogeography
Pleistocene
Population
Population genetics
Population structure
Populations
Reefs
Sea level
Sea level oscillations
Species
Studies
Yellowtail
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Summary: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.
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0122173