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Breton, B. / Zohar, / Sambroni, Elisabeth - 1984The immunological specificity of fish gonadotropin does not generally allow the use of the homologous RIA systems prepared for salmon and carp GtH for the determination of gonadotropin in other species. Recently, an RIA using an antibody directed against the β c-GtH subunit has enabled GtH...Contributeur (s):
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Breton, B. / Motin, A. / Kah, / Lemenn, / Geoffre, / Precijoux, / Chambolle, P. - 1984A radioimmunoassay for Salmon Gn-RH p-gly-His-Trp-Ser-Tyr-Gly-Trp- Leu-Pro-Gly) (NH2) has been developed with a sensitivity of 7 pg/assay tube. The system allows the specific detection of an immunological GnRH related substance in the brain and pituitary of three teleost species but not in an...Contributeur (s):
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Breton, B. / Fostier, Alexis / Zohar, Y. / Le Bail, Pierre-Yves / Billard, R. - 1983Female brown trout were sacrificed every month or twice a month during the reproductive season. Plasma gonadotropin (GtH) and estradiol-17 beta (E2-17 beta) were measured using radioimmunological techniques, in relation with the state of gametogenesis. From ovulation to July egg's diameters...Contributeur (s):
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Breton, B. / Maisse, G. / Lemenn, - 1983Under natural external conditions in Brittany, ovulation and spermiation have been induced in summer after the photoperiodic treatment of a strain of rainbow trout (Salmo gairdneri ) (normal reproduction in winter). The following results have been obtained: (1) All females and males have produced...Contributeur (s):
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Maisse, G. / Breton, B. - 1983Contributeur (s):
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Billard, R. / Alagarswami, / Peter, R.E. / Breton, B. - 1983During the reproductive season in August, we administered to adult male and female Carp an LHRH analog (LHRH-A = D-trp6EA-LHRH) (50 micrograms/kg) alone or in association with pimozide, a dopamine inhibitor (10 mg/kg). LHRH-A caused the circulating portal level of gonadotropin to rise significantly...Contributeur (s):
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Breton, B. / Derrien-Guimard, M.C. - 1983Contributeur (s):
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Billard, R. / Richard, M. / Breton, B. - 1976Bilateral castration of male rainbow Trout resulted in increased levels of circulating gonadotropin, as measured by radioimmunoassay, but the response varied depending on the season. In early May the increase was 12 ng/ml after 30 days, when compared to the intact control but later in the month at...Contributeur (s):
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Breton, B. / Billard, R. - 1973The use of hormonal factors in the induction of artificial egg laying was introduced in fish farming following the first works by Houssay in 1929. Since then, this technique has not evolved much. Pickford and Atz in 1957 have reviewed, exhaustively, most of the attempts carried out to date. This...Contributeur (s):
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Breton, B. / Quillet, E. / Jalabert, B. - 1996Contributeur (s):
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Mikolajczyk, T. / Chyb, J. / Sokolowska-Mikolajczyk, M. / Breton, B. / Monden, K. / Epler, P. - 1998Contributeur (s):
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Breton, B. / Billard, R. - 1973The use of hormonal factors in the induction of artificial egg laying was introduced in fish farming following the first works by Houssay in 1929. Since then, this technique has not evolved much. Pickford and Atz in 1957 have reviewed, exhaustively, most of the attempts carried out to date. This...Contributeur (s):
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Vizziano, D. / Barrios, F. / Astigarraga, I. / Breton, B. / Williot, P. - 2015Spawning of Siberian sturgeon A baerii was induced hormonally using mammaliena gonadotropin-releasing analogue GnRHa in Uruguay and results were compared with treatments made in France.Contributeur (s):