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Nuclear Markers of Danube Sturgeons Hybridization
Department of Biochemistry and Molecular Biology, University of Bucharest, Splaiul Independentei, Bucharest 91-95, 050095, Romania
Sturgeon Research Group, Danube Delta National Institute, 165 Babadag Street, Tulcea 820112, Romania
Institut des Sciences de l’Evolution, (UMR UM2-CNRS-IRD 5554) University Montpellier II, cc 065. Place E. Bataillon, 34095 Montpellier Cedex 5, France
* Author to whom correspondence should be addressed.
Received: 2 September 2011; in revised form: 27 September 2011 / Accepted: 8 October 2011 / Published: 14 October 2011
Abstract: Acipenseriformes are composed of 25 sturgeon species and two paddlefish species distributed exclusively in the northern hemisphere. The Danube River and the Black Sea were originally inhabited by six sturgeon species but two are extinct and only four are still reproducing currently in the Lower Danube: Huso huso, Acipenser stellatus, A. gueldenstaedtii and A. ruthenus. Sturgeon species hybridize more easily than other fish and the determination of pure species or hybrid status is important for conservation and for breeding in fish farms. This survey demonstrated that morphological determination of this status is not reliable and a molecular tool, based on eight microsatellites genotypes is proposed. This method, based on three successive statistical analyses including Factorial Correspondence Analysis (FCA), Structure assignation and NewHybrids status determination, showed a high efficiency in discriminating pure species specimens from F1, F2 and two kinds of backcross individuals involving three of the four reproducing Lower Danube sturgeon species.
Keywords: sturgeons; microsatellites; hybrids; statistical analysis
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Dudu, A.; Suciu, R.; Paraschiv, M.; Georgescu, S.E.; Costache, M.; Berrebi, P. Nuclear Markers of Danube Sturgeons Hybridization. Int. J. Mol. Sci. 2011, 12, 6796-6809.
Dudu A, Suciu R, Paraschiv M, Georgescu SE, Costache M, Berrebi P. Nuclear Markers of Danube Sturgeons Hybridization. International Journal of Molecular Sciences. 2011; 12(10):6796-6809.
Dudu, Andreea; Suciu, Radu; Paraschiv, Marian; Georgescu, Sergiu Emil; Costache, Marieta; Berrebi, Patrick. 2011. "Nuclear Markers of Danube Sturgeons Hybridization." Int. J. Mol. Sci. 12, no. 10: 6796-6809.