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Body shape variation in meiotic gynogenetic and triploid sea bass, Dicentrarchus labrax

Published online by Cambridge University Press:  30 September 2010

Stefano Peruzzi ,
Stine Wiborg-Dahle ,
Pierrick Haffray ,
Béatrice Chatain  and
Raul Primicerio
Stefano Peruzzi*
Affiliation:
University of Tromsø, Department of Arctic and Marine Biology, Faculty of Biosciences, Fisheries and Economics, 9037 Tromsø, Norway
Stine Wiborg-Dahle
Affiliation:
University of Tromsø, Department of Arctic and Marine Biology, Faculty of Biosciences, Fisheries and Economics, 9037 Tromsø, Norway SINTEF, Fisheries and Aquaculture AS, 7465 Trondheim, Norway
Pierrick Haffray
Affiliation:
Syndicat des Sélectionneurs Avicoles et Aquacoles Français (SYSAAF), Station INRA/SCRIBE, Campus de Beaulieu, 35042 Rennes, France
Béatrice Chatain
Affiliation:
IFREMER, Laboratoire de Recherche Piscicole de Méditerranée, chemin de Maguelone, 34250 Palavas-les-Flots, France
Raul Primicerio
Affiliation:
University of Tromsø, Department of Arctic and Marine Biology, Faculty of Biosciences, Fisheries and Economics, 9037 Tromsø, Norway
*
a Corresponding author: Stefano.Peruzzi@uit.no
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Abstract

A method of geometric morphometrics was used to characterize body shape variation in meiotic gynogenetic and triploid sea bass in comparison with diploid controls. A total of 13 coordinate landmark data were recorded on the profile of 34-month-old control (n = 81), gynogenetic (n = 117) and triploid (n = 131) siblings generated from two females (A and B). Three main axes of morphometric variation were consistent, and these accounted for 60.8 and 57.6% of the total variability in females A and B, respectively. There were significant shape deviations of triploid and gynogenetic fish relative to the controls, and differences were particularly evident in the progeny of one female. Overall, triploids displayed a more slender shape than diploids, whereas gynogenetic fish were deeper bodied and had flexed caudal peduncles and cranial features. The results are discussed especially in relation to the characterization of triploid fish for commercial purposes.

Keywords

Body shape variabilityMorphometryGeometry of Procrustes distanceTriploidyGynogenesisEuropean sea bassDicentrarchus labrax
Type
Research Article
Information
Aquatic Living Resources , Volume 23 , Issue 3 , July 2010 , pp. 297 - 302
Copyright
© EDP Sciences, IFREMER, IRD 2010

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