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déterminisme génétique du sexe

Aquatic Living Resources (1)

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Production of all-triploid and all-female brown trout for aquaculture
Edwige Quillet, Laure Foisil, Bernard Chevassus, Daniel Chourrout, F. G. Liu
Journal:

Aquatic Living Resources / Volume 4 / Issue 1 / January 1991

Published online by Cambridge University Press:

15 January 1991, pp. 27-32

Print publication:

January 1991
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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.