Population structure and phylogeography in Nassau grouper (epinephelus striatus), a mass-aggregating marine fish

Alexis M. Jackson, Brice X. Semmens, Yvonne Sadovy De Mitcheson, Richard S. Nemeth, Scott A. Heppell, Phillippe G. Bush, Alfonso Aguilar-Perera, John A B Claydon, Marta C. Calosso, Kathleen Sealey, Michelle T. Schärer, Giacomo Bernardi

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

To address patterns of genetic connectivity in a mass-aggregating marine fish, we analyzed genetic variation in mitochondrial DNA (mtDNA), microsatellites, and single nucleotide polymorphisms (SNPs) for Nassau grouper (Epinephelus striatus). We expected Nassau grouper to exhibit genetic differentiation among its subpopulations due to its reproductive behavior and retentive oceanographic conditions experienced across the Caribbean basin. All samples were genotyped for two mitochondrial markers and 9 microsatellite loci, and a subset of samples were genotyped for 4,234 SNPs. We found evidence of genetic differentiation in a Caribbean-wide study of this mass-aggregating marine fish using mtDNA (FST = 0.206, p<0.001), microsatellites (FST = 0.002, p = 0.004) and SNPs (FST = 0.002, p = 0.014), and identified three potential barriers to larval dispersal. Genetically isolated regions identified in our work mirror those seen for other invertebrate and fish species in the Caribbean basin. Oceanographic regimes in the Caribbean may largely explain patterns of genetic differentiation among Nassau grouper subpopulations. Regional patterns observed warrant standardization of fisheries management and conservation initiatives among countries within genetically isolated regions.

Original languageEnglish
Article numbere97508
JournalPLoS One
Volume9
Issue number5
DOIs
StatePublished - May 15 2014

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Phylogeography
Epinephelus
grouper
phylogeography
Polymorphism
marine fish
Microsatellite Repeats
Fish
Fishes
population structure
Nucleotides
single nucleotide polymorphism
Single Nucleotide Polymorphism
Mitochondrial DNA
genetic variation
microsatellite repeats
Population
mitochondrial DNA
Fisheries
basins

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Medicine(all)

Cite this

Jackson, A. M., Semmens, B. X., De Mitcheson, Y. S., Nemeth, R. S., Heppell, S. A., Bush, P. G., ... Bernardi, G. (2014). Population structure and phylogeography in Nassau grouper (epinephelus striatus), a mass-aggregating marine fish. PLoS One, 9(5), [e97508]. https://doi.org/10.1371/journal.pone.0097508

Population structure and phylogeography in Nassau grouper (epinephelus striatus), a mass-aggregating marine fish. / Jackson, Alexis M.; Semmens, Brice X.; De Mitcheson, Yvonne Sadovy; Nemeth, Richard S.; Heppell, Scott A.; Bush, Phillippe G.; Aguilar-Perera, Alfonso; Claydon, John A B; Calosso, Marta C.; Sealey, Kathleen; Schärer, Michelle T.; Bernardi, Giacomo.

In: PLoS One, Vol. 9, No. 5, e97508, 15.05.2014.

Research output: Contribution to journalArticle

Jackson, AM, Semmens, BX, De Mitcheson, YS, Nemeth, RS, Heppell, SA, Bush, PG, Aguilar-Perera, A, Claydon, JAB, Calosso, MC, Sealey, K, Schärer, MT & Bernardi, G 2014, 'Population structure and phylogeography in Nassau grouper (epinephelus striatus), a mass-aggregating marine fish', PLoS One, vol. 9, no. 5, e97508. https://doi.org/10.1371/journal.pone.0097508
Jackson, Alexis M. ; Semmens, Brice X. ; De Mitcheson, Yvonne Sadovy ; Nemeth, Richard S. ; Heppell, Scott A. ; Bush, Phillippe G. ; Aguilar-Perera, Alfonso ; Claydon, John A B ; Calosso, Marta C. ; Sealey, Kathleen ; Schärer, Michelle T. ; Bernardi, Giacomo. / Population structure and phylogeography in Nassau grouper (epinephelus striatus), a mass-aggregating marine fish. In: PLoS One. 2014 ; Vol. 9, No. 5.
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