Ultrastructural demonstration of the model of Litopenaeus vannamei (Crustacea, Penaeidae) male sexual maturation and spermatozoal capacitation

作者: Jorge Alfaro-Montoya , André Braga , Maribelle Vargas , Rodolfo Umaña-Castro

DOI: 10.1080/07924259.2016.1244573

关键词: UltrastructureSpermatogenesisSexual maturityAcrosomeInternal medicineCapacitationSpermatophoreCell biologyEndocrinologyBiologyLitopenaeusCytoplasm

摘要: AbstractThe present study demonstrates ultrastructurally the model of Litopenaeus vannamei male sexual maturation and spermatozoal capacitation. The results show that phase 1 occurred in seminiferous tubules includes spermatogenesis. In this phase, throughout differentiation spermatogonia into late spermatids following processes were observed: (1) decondensation chromatin; (2) rupture nuclear envelope; (3) reduction cytoplasm degeneration organelles; (4) formation acrosome via fusion cytoplasmic vesicles. Phase 2 comprised maturation, a process started with transfer ducts ended acrosomal spike terminal ampoules. During development subacrosomal region lateral electron-dense particles ducts, which is novel finding species. 3 was observed after spermatophore placement on fema...

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