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- W2042932015 abstract "In the Calyptraeidae, which are protandric hermaphrodite molluscs, the external male genital tract and the gonad develop synchronously. The penis appears in young animals but regresses at the time of sex inversion. Experiments carried out in Crepidula fornicata, using the organ culture technique, enabled us to prove that involution of the penis in vitro is not the result of an intrinsic cycle of this organ. Hormonal exposure which had occurred in vivo was sufficient to condition further development of the isolated penis in vitro. A pedal morphogenetic factor and a pleural regressive factor are responsible for the differentiation of the male genital tract. The programming depends upon a balance of these neuroendocrine factors in the animal that provided the explant. Notwithstanding its regression in vitro, the penis of Crepidula represents an organ unable to evolve by itself, inasmuch as its development is directly dependent on the neuroendocrine system." @default.
- W2042932015 created "2016-06-24" @default.
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- W2042932015 date "1982-01-01" @default.
- W2042932015 modified "2023-10-15" @default.
- W2042932015 title "Etude expérimentale de l'évolution in vitro du tractus génital mâle externe chez<i>Crepidula fornicata</i>L. (Mésogastéropode hermaphrodite protandre) / Experimental study of in vitro development of the male genital tract in<i>Crepidula fornicata</i>L. (protandric hermaphrodite Mesogastropod)" @default.
- W2042932015 cites W1990289706 @default.
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- W2042932015 doi "https://doi.org/10.1080/01651269.1982.10553452" @default.
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