Multiple SNP markers reveal fine-scale population and deep phylogeographic structure in European anchovy (Engraulis encrasicolus L.).
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Supplemental Information - Summary of nuclear DNA SNP statistics in 626 samples of Engraulis encrasicolus by locus. Number of alleles or haplotypes for each locus (No alleles), Allelic Richness (A) for a minimum sample size of 15 individuals, mean heterozygosity (he) and FIS values with their Standard Error (SE). doi:10.1371/journal.pone.0042201.s001
Pardo, Miguel Angel
Grant, W Stewart
KAUST DepartmentBiological and Environmental Sciences and Engineering (BESE) Division
Red Sea Research Center (RSRC)
Permanent link to this recordhttp://hdl.handle.net/10754/323578
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AbstractGeographic surveys of allozymes, microsatellites, nuclear DNA (nDNA) and mitochondrial DNA (mtDNA) have detected several genetic subdivisions among European anchovy populations. However, these studies have been limited in their power to detect some aspects of population structure by the use of a single or a few molecular markers, or by limited geographic sampling. We use a multi-marker approach, 47 nDNA and 15 mtDNA single nucleotide polymorphisms (SNPs), to analyze 626 European anchovies from the whole range of the species to resolve shallow and deep levels of population structure. Nuclear SNPs define 10 genetic entities within two larger genetically distinctive groups associated with oceanic variables and different life-history traits. MtDNA SNPs define two deep phylogroups that reflect ancient dispersals and colonizations. These markers define two ecological groups. One major group of Iberian-Atlantic populations is associated with upwelling areas on narrow continental shelves and includes populations spawning and overwintering in coastal areas. A second major group includes northern populations in the North East (NE) Atlantic (including the Bay of Biscay) and the Mediterranean and is associated with wide continental shelves with local larval retention currents. This group tends to spawn and overwinter in oceanic areas. These two groups encompass ten populations that differ from previously defined management stocks in the Alboran Sea, Iberian-Atlantic and Bay of Biscay regions. In addition, a new North Sea-English Channel stock is defined. SNPs indicate that some populations in the Bay of Biscay are genetically closer to North Western (NW) Mediterranean populations than to other populations in the NE Atlantic, likely due to colonizations of the Bay of Biscay and NW Mediterranean by migrants from a common ancestral population. Northern NE Atlantic populations were subsequently established by migrants from the Bay of Biscay. Populations along the Iberian-Atlantic coast appear to have been founded by secondary waves of migrants from a southern refuge.
CitationZarraonaindia I, Iriondo M, Albaina A, Pardo MA, Manzano C, et al. (2012) Multiple SNP Markers Reveal Fine-Scale Population and Deep Phylogeographic Structure in European Anchovy (Engraulis encrasicolus L.). PLoS ONE 7: e42201. doi:10.1371/journal.pone.0042201.
SponsorsThis work was supported by a research grant to IZ from the Education, Universities and Investigation Department of the Basque Government, by the European Commission (FACTS, FP7-KBBE-2009-3, grant agreement 244966) and two funded projects from the Ministry of Science and Innovation of Spain (RTA2006-00068-C02-02) and the Agriculture and Fisheries Department of the Basque Government (ECOANCHOA). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.
PublisherPublic Library of Science (PLoS)
PubMed Central IDPMC3408476
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