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Limites et améliorations du sexage des salmonidés par dosage de la 11-cétotestostérone circulante

Abstract : The use of plasma concentrations of 11-ketotestosterone for determining sex has been studied in various species of salmonids (O. kisutch, S. salar, S. gairdneri, S. trutta) at different stages of their sexual development. Radioimmunological titrations were performed; though they are less sensitive than filtrations with an extraction by organic solvents, they are quicker to use. The percentage of error in sex determination is low (5%) in animals that have developing gonads or that are still in prepuberty, but is much higher in immature animals. A single injection of total pituitary extract (equivalent to 100 ng of s-GtH per gram) will reduce this error to 2% by stimulating 11-ketotestosterone secretion.
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https://hal.inrae.fr/hal-02728481
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Submitted on : Tuesday, June 2, 2020 - 4:00:25 AM
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Pierre-Yves Le Bail, Alexis Fostier, O. Marcuzzi. Limites et améliorations du sexage des salmonidés par dosage de la 11-cétotestostérone circulante. Canadian Journal of Zoology, NRC Research Press, 1983, 61 (2), pp.457-460. ⟨10.1139/z83-060⟩. ⟨hal-02728481⟩

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