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- W2061311785 abstract "Le Mollusque Gastéropode Prosobranche Patella vulgata L. est hermaphrodite protandre. La gonade juvénile est bisexuée mais à la maturité génitale seule la lignée mâle évolue. Le changement de sexe survient à une période variable du cycle vital mais toupours pendant une période de repos post spermatogénétique. L'étude expérimentale du cycle sexuel réalisée surtout par la méthode des cultures organotypiques a permis de montrer que le cycle de la gonade est régi par des corrélations endocrines. Au cours de la phase mâle existe un facteur inhibiteur tentaculaire responsable de la quiescence des spermatogonies pendant les périodes de repos. Le cerveau secrète une substance mitogène et la spermatogenèse semble être déclenchée par une augmentation du taux de gonadostimuline cérébrale. L'apparition du changement de sexe est conditionné par la persistance de l'inhibition tentaculaire sur la lignée mâle et serait sous la dépendance d'une hormone de vitellogenèse libérée par les ganglions cérébroïdes. The gastropod molluse Patella vulgata L. is a protandrous hermaphrodite. The juvenile gonad is bisexual, but when it reaches genital maturity, only the male line develops. The sex change takes place at a variable period of the life cycle but always during a period of post spermatogenetic rest. The experimental study of the sexual cycle of this prosobranch, carried out mainly by the method of organotypic cultures, has shown that the cycle of the gonad is regulated by endocrine correlations. During its male phase there is an inhibiting tentacular factor responsible for the quiescence of the spermatogonies during the periods of rest. The brain secretes a mitogenetic substance, and an increase in the amount of cerebral gonadostimulin seems to be the cause of the spermatogenesis. The appearance of sex change is conditioned by the persistence of the tentacular inhibition on the male line and would be dependent on a hormone of vitellogenesis liberated by the cerebral ganglia." @default.
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- W2061311785 date "1971-02-01" @default.
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- W2061311785 title "Etude du cycle biologique et de l'inversion du sexe chez Patella vulgata L. (Mollusque Gastéropode Prosobranche)" @default.
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- W2061311785 doi "https://doi.org/10.1016/0016-6480(71)90208-5" @default.
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