10.5061/DRYAD.VJ64M
Souche, Erika L.
KU Leuven
Hellemans, Bart
KU Leuven
Babbucci, Massimiliano
KU Leuven
MacAoidh, Eoin
European Commission
Guinand, Bruno
French National Centre for Scientific Research
Bargelloni, Luca
University of Padua
Chistiakov, Dimitry Alexandrovich
KU Leuven
Patarnello, Tomaso
Joint Research Centre
Bonhomme, François
French National Centre for Scientific Research
Martinsohn, Jann T.
European Commission
Volckaert, Filip A. M.
KU Leuven
University of Gothenburg
Data from: Range-wide population structure of European sea bass
Dicentrarchus labrax
Dryad
dataset
2015
Dicentrarchus labrax
2015-04-14T15:05:58Z
2015-04-14T15:05:58Z
en
https://doi.org/10.1111/bij.12572
210358 bytes
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CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
The euryhaline European sea bass Dicentrarchus labrax L., inhabiting the
coasts of the eastern Atlantic Ocean and Mediterranean Sea, has had many
opportunities for differentiation throughout its large natural range.
However, evidence for this has been incompletely documented geographically
and with an insufficient number of markers. Therefore, its full range was
sampled at 22 sites and individuals were genotyped with a suite of mapped
markers, including 14 microsatellite loci (N = 536) and 46 neutral or
gene-linked single nucleotide polymorphisms (SNPs; N = 644). We confirm
that the Atlantic and Mediterranean basins harbour two distinct lineages.
Within the Atlantic Ocean no pattern was obvious based on the
microsatellite and SNP genotypes, except for a subtle difference between
South-eastern and North-eastern Atlantic sea bass attributed to limited
introgression of alleles of Mediterranean origin. SNP genotypes of the
Mediterranean lineage differentiated into three groups, probably under the
influence of geographical isolation. The Western Mediterranean group
showed genetic homogeneity without evidence for outlier loci. The Adriatic
group appeared as a distinct unit. The Eastern Mediterranean group showed
a longitudinal gradient of genotypes and most interestingly an outlier
locus linked to the somatolactin gene. Overall, the spatial pattern fits
those observed with other taxa of between-basin segregation and
within-basin connectivity, which concurs well with the swimming
capabilities of European sea bass. Evidence from a few outlier loci in
this and other studies encourages further exploration of its regional
connectivity and adaptive evolution.
Microsatellite genotypesSNP genotypes