Vaini JO, Mota KG, Ojeda AP, Barreiros JP, Moreira RG, Hilsdorf AWS. Development and characterization of 20 polymorphic microsatellite markers for Epinephelus marginatus (Lowe, 1834) (Perciformes: Epinephelidae) using 454 pyrosequencing.
Genet Mol Biol 2019;
42:74-79. [PMID:
30776048 PMCID:
PMC6428119 DOI:
10.1590/1678-4685-gmb-2018-0067]
[Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Accepted: 04/26/2018] [Indexed: 11/23/2022] Open
Abstract
The dusky grouper, Epinephelus marginatus, is a well-known and
widespread marine fish assessed as endangered by the International Union for the
Conservation of Nature. Analyzing the genetic diversity of this species is,
therefore, of utmost importance and necessary for conservation purposes.
Microsatellites are molecular tools with advantages that are ideal for
population analyses. This study provides the first set of species-specific
microsatellite loci for E. marginatus that can be applied when
assessing both intra- and interpopulation genetic variation. Twenty
microsatellite loci were isolated and characterized for the dusky grouper by
genotyping 20 individuals obtained from the North Eastern Atlantic Ocean (n = 4)
and from the South Western Atlantic Ocean (n = 16). The number of alleles per
locus varied from 2 to 11, while the observed and expected heterozygosities
ranged from 0.25 to 0.94 and 0.34 to 0.89, respectively. The polymorphic
information content varied from moderately to highly informative. This suite of
markers provides the first specific nuclear tools for E.
marginatus and, thus, allows to assess with more specificity
different populations’ structures.
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