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Marine Biology

, Volume 161, Issue 5, pp 1063–1071 | Cite as

Existence of two widespread semi-isolated genetic entities within Mediterranean anchovies

  • S. Oueslati
  • K. Fadhlaoui-Zid
  • O. Kada
  • M. T. Augé
  • J. P. Quignard
  • F. BonhommeEmail author
Original Paper

Abstract

We investigated genetic transitions in European anchovies (Engraulidae) by analysing one mitochondrial and six nuclear microsatellite loci in samples from 28 geographical locations, primarily in the Western Mediterranean with external samples from the Black Sea in the East, and the Gulf of Biscay in the West. Four samples were collected from lagoons or shallow waters in France, Morocco and Tunisia. Two strongly differentiated loci and nucleo-cytoplasmic disequilibrium allowed us unambiguously to confirm the existence of a coastal genetic entity that is distinct from the more offshore marine populations. By contrast, four microsatellites were undifferentiated within the entire set of samples, testifying to a variable permeability of the two interacting genomes. Our findings strengthen and extend previous reports of the existence of a coastal anchovy entity that is widespread in Mediterranean lagoons.

Keywords

Microsatellite Locus Genetic Incompatibility Bizerte Lagoon Mixed Stock Diagnostic Locus 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

The authors wish to thank Emeline Lambert for having initiated the mtDNA sequencing, Jacques Dietrich for providing the Gulf of Lion’s samples and for unpublished data, Daniela Banaru for Black Sea sample, Pierre-Alexandre Gagnaire and Nicolas Bierne for helpful discussion, Othman Jarboui for his support for the project and David McKenzie for linguistic revision. The analytical part of this work was financed by basic institutional funding to François Bonhomme and was performed entirely at the Station Méditerranéenne de l’Environement Littoral in Sète. During her stay in Sète, Soumaya Oueslati was supported by French Embassy (Tunisia) and Program Hubert-Curien 27961XE fellowships.

Supplementary material

227_2014_2399_MOESM1_ESM.pdf (2.3 mb)
Supplementary material 1 (PDF 2340 kb)

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Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • S. Oueslati
    • 1
    • 2
    • 3
  • K. Fadhlaoui-Zid
    • 2
  • O. Kada
    • 4
  • M. T. Augé
    • 1
  • J. P. Quignard
    • 5
  • F. Bonhomme
    • 1
    Email author
  1. 1.Institut des Sciences de l’Evolution, CNRS UMR554Université de Montpellier IIMontpellier Cedex 5France
  2. 2.Institut National des Sciences et Technologie de la MerLa GouletteTunisia
  3. 3.Institut National Agronomique de TunisieTunis-MahrajèneTunisia
  4. 4.Institut National de Recherches HalieutiquesNadorMorocco
  5. 5.Laboratoire d’Ichtyologie, 1 Allée de l’HermitageCastelnau-Le-LezFrance

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