Modulation of the effectiveness of 17-alpha-hydroxy-20-beta-dihydroprogesterone or of a gonadotrophic extract on the in vitro intrafollicular maturation of oocytes of the rainbow trout Salmo gairdnerii by various non-maturing steroids [Translation from: Compte Rendu Hebdomadaire des Seances de l'Academie des Sciences, Paris, Series D 281, 811-814, 1975]

Jalabert, B. (1980) Modulation of the effectiveness of 17-alpha-hydroxy-20-beta-dihydroprogesterone or of a gonadotrophic extract on the in vitro intrafollicular maturation of oocytes of the rainbow trout Salmo gairdnerii by various non-maturing steroids [Translation from: Compte Rendu Hebdomadaire des Seances de l'Academie des Sciences, Paris, Series D 281, 811-814, 1975]. Windermere, UK, Freshwater Biological Association, (FBA Translations (New Series), 136)

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Abstract

The effectiveness of 17 α-hydroxy-20 β-dihydroprogesterone (17 α-20 β Pg) or of a trout hypophyseal gonadotrophic extract on the in vitro intrafollicular maturation of trout oocytes can be modulated by steroids which do not have a direct maturing effect; the effectiveness of the gonadotrophic extract is lowered by oestradiol and oestrone and increased by testosterone. As these steroids have no significant effect on maturation induced by 17 α-20 β Pg, the site of their activity is probably in the follicular envelopes. Corticosteroids, and Cortisol and cortisone in particular increase the effectiveness of the gonadotrophic extract, but increase the effectiveness of 17 α-20 β Pg even more strongly, suggesting that this 'progestagen' has a direct effect on oocyte sensitivity.

Item Type: Monograph or Serial Issue
Title: Modulation of the effectiveness of 17-alpha-hydroxy-20-beta-dihydroprogesterone or of a gonadotrophic extract on the in vitro intrafollicular maturation of oocytes of the rainbow trout Salmo gairdnerii by various non-maturing steroids [Translation from: Compte Rendu Hebdomadaire des Seances de l'Academie des Sciences, Paris, Series D 281, 811-814, 1975]
Personal Creator/Author:
CreatorsEmail
Jalabert, B.
Series Name: FBA Translations (New Series)
Number: 136
Date: 1980
Publisher: Freshwater Biological Association
Place of Publication: Windermere, UK
Issuing Agency: Freshwater Biological Association
Additional Information: Translated from French into English
Uncontrolled Keywords: Freshwater fish; Oocytes; Sexual maturity; Hormones; Steroids; Incubation; Heteropneustes fossilis; Salmo gairdnerii
Subjects: Biology
Limnology
Item ID: 4968
Depositing User: Hardy B Schwamm
Date Deposited: 24 Mar 2011 10:25
Last Modified: 29 Sep 2011 15:36
URI: http://aquaticcommons.org/id/eprint/4968

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