Absence of spatial genetic structure in common dentex (Dentex dentex Linnaeus, 1758) in the Mediterranean Sea as evidenced by nuclear and mitochondrial molecular markers
|Author(s)||Viret Alexiane1, Tsaparis Dimitris2, Tsigenopoulos Costas S.2, Berrebi Patrick1, Sabatini Andrea3, Arculeo Marco4, Fassatoui Chiheb5, Magoulas Antonios2, Marengo Michel6, 7, Morales-Nin Beatriz8, Caill-Milly Nathalie9, Durieux Eric D.H.6, 7|
|Affiliation(s)||1 : Univ Montpellier, ISEM, CNRS, IRD,EPHE, Montpellier, France.
2 : HCMR, Inst Marine Biol Biotechnol & Aquaculture, Iraklion, Crete, Greece.
3 : Univ Cagliari, Biol Anim Ecol, Cagliari, Italy.
4 : Univ Palermo, Dipartimento Sci & Tecnol Biol Chim & Farmaceut, Palermo, Italy.
5 : Inst Natl Agron Tunisie, Ecosyst & Ressources Aquat UR03AGRO1, Tunis, Tunisia.
6 : Univ Corse Pasquale Paoli, UMR CNRS UCPP Sci Environm 6134, Corte, France.
7 : Univ Corse Pasquale Paoli, CNRS UCPP Plateforme Marine Stella Mare, UMS 3514, Biguglia, France.
8 : IMEDEA CSIC UIB, Mediterranean Inst Adv Studies, Dept Nat Resources, Esporles, Balearic Isl, Spain.
9 : Ifremer, Lab Environm Resources Arcachon, UFR Sci & Tech, 1 Allee Parc Montaury, Anglet, France.
|Source||Plos One (1932-6203) (Public Library Science), 2018-09 , Vol. 13 , N. 9 , P. e0203866 (21p.)|
|WOS© Times Cited||8|
The common dentex, Dentex dentex, is a fish species which inhabits marine environments in the Mediterranean and Northeast Atlantic regions. This is an important species from an ecological, economic and conservation perspective, however critical information on its population genetic structure is lacking. Most samples were obtained from the Mediterranean Sea (17 sites) with an emphasis around Corsica (5 sites), plus one Atlantic Ocean site. This provided an opportunity to examine genetic structuring at local and broader scales to provide science based data for the management of fishing stocks in the region. Two mitochondrial regions were examined (D-loop and COI) along with eight microsatellite loci. The COI data was combined with publicly available sequences and demonstrated past misidentification of common dentex. All markers indicated the absence of population genetic structure from the Bay of Biscay to the eastern Mediterranean Sea. Bayesian approaches, as well as the statistical tests performed on the allelic frequencies from microsatellite loci, indicated low differentiation between samples; there was only a slight (p = 0.05) indication of isolation by distance. Common dentex is a marine fish species with a unique panmictic population in the Mediterranean and likely in the Atlantic Ocean as well