Production of meiotic gynogenetic and triploid sea bass, Dicentrarchus labrax L. 1. Performances, maturation and carcass quality

Production of meiotic gynogenetic and triploid sea bass, Dicentrarchus labrax L. 1. Performances, maturation and carcass quality

Meiotic gynogenetic and triploid sea bass were produced by pressure shocks according to a previously published protocol. Pressure-treated groups did not survive as well as controls during early development and larval rearing. Performances, sexual maturation and carcass quality were examined over a p...

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Bibliographic Details
Published in:Aquaculture Vol. 230; no. 1-4; pp. 41 - 64
Main Authors: PERUZZI, Stefano, CHATAIN, Béatrice, SAILLANT, Eric, HAFLKAY, Pierrick, MENU, Bruno, FALGUIERE, Jean-Claude
Format: Journal Article
Language:English
Published: Amsterdam Elsevier Science 16-02-2004
Elsevier Sequoia S.A
Subjects:
Animal aquaculture
Animal productions
Aquaculture
Biological and medical sciences
Dicentrarchus labrax
Fish
Fundamental and applied biological sciences. Psychology
General aspects
Genetics
Marine
Physical growth
Pisciculture
Vertebrate aquaculture
Marine environment
Vertebrata
Gynogenesis
Maturation
Growth
Pisces
Dicentrarchus labrax
Triploidy
Performance
Sea bass
Carcass
Aquaculture
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Summary:Meiotic gynogenetic and triploid sea bass were produced by pressure shocks according to a previously published protocol. Pressure-treated groups did not survive as well as controls during early development and larval rearing. Performances, sexual maturation and carcass quality were examined over a period of 34-45 months. At the age of 34 months, growth of the gynogenetic fish was comparable to that of the control but inferior in the triploid fish. A predominance of male fish was found within the triploid groups, while diploid and meiotic gynogenetic fish showed equal proportions of the sexes. Gonadal maturation in triploid fish was significantly impaired, particularly in the females that showed rudimentary ovaries. Triploid males exhibited primary maturation but proved to be gametically sterile. Pressure-induced triploids did not grow as well as diploids, but these results might be ascribed to specific on-growing conditions (communal rearing). The performance of gynogenetic sea bass was comparable to that of control. The superiority of diploid fish over their triploid counterparts was confirmed during the final growing period and more clearly so in females. Performances of triploids varied according to their maternal origin. Overall, striking qualitative differences between diploid and triploid fish were found at the age of 34 and 45 months, although the results varied in a gender-specific manner. A strong maternal effect was also observed. The potential advantages of triploid sea bass for aquaculture purposes are discussed. [PUBLICATION ABSTRACT]
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0044-8486
1873-5622
DOI:10.1016/S0044-8486(03)00417-4