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Homologous Functional Structure and Origin of the Spermatophores in Six Palaemonid Shrimps (Decapoda, Caridea)

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Les structures du canal déférent et des spermatophores de six espèces de crevettes Palaemonidae (Macrobrachium nipponense, M. formosense, M. japonicum, M. latidactylus, M. rosenbergii et Palaemon paucidens) ont été comparées et se sont révélées homologues. Le spermatophore se compose d'une matrice adhésive, d'une matrice protectrice, et d'une masse spermatique. L'épithélium colomnaire périphérique et inférieur du canal déférent sécrète la matrice adhésive, alors que l'épithélium central et supérieur (le typlosole) sécrète la matrice protectrice. La matrice qui correspond à la masse de spermatozoïdes a des qualités similaires à celles de la matrice protectrice mais provient des testicules, avec les spermatozoïdes. Les analogies entre les structures et les qualités du spermatophore chez les Palaemonidae et chez d'autres groupes sont discutées.

Affiliations: 1: Department of Anatomy, Medical University of South Carolina, Charleston, South Carolina, 29425, U.S.A.; 2: Tokyo University of Fisheries, Tokyo 108, Japan


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