Production of all-triploid and all-female brown trout for aquaculture

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Éditeur(s) EDP Sciences
Identifiant documentaire 10-1991002
Identifiant OAI oai:edpsciences.org:dkey/10.1051/alr:1991002
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Auteur(s): Edwige Quillet,Laure Foisil,Bernard Chevassus,Daniel Chourrout,F. G. Liu
Mots clés Brown trout triploidy gynogenesis genetic sex-control masculinization Truite commune triploïdie gynogenèse déterminisme génétique du sexe inversion sexuelle
Date de publication 15/01/1991
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Source https://doi.org/10.1051/alr:1991002
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Description
Heat shocks effective for the production of triploid brown trout (Salmo trutta) were optimized: 28 °C shocks lasting 10 to 15 minutes and applied 5 minutes after fertilization induce very high rates of triploidy (close to 100%) without causing much mortality; they can therefore be proposed for mass production of triploid brown trout. Female homogamety in that species is also demonstrated from analysis of gynogenetic progenies and progenies of sex-inverted females. Although the efficiency of masculinizing hormonal treatments requires further improvement, production of all-female sterile populations is now possible in this species promising for European sea-farming.
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