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| Article Name : | | | MALE REPRODUCTIVE BIOLOGY OF A BRACHYURAN CRAB, SARMATIUM PUNCTATUM (A. MILNE EDWARDS, 1875) | | Author Name : | | | I. Sakunthala , A. Shyla Suganthi | | Publisher : | | | Ashok Yakkaldevi | | Article Series No. : | | | ROR-792 | | Article : | |  | Author Profile | | Abstract : | | | This paper envisages the morphology and function of the male reproductive system in a brachyuran crab, Sarmatium punctatum using histological and histochemical studies. The male reproductive system of S. punctatum comprises paired symmetrical structures of testis, coiled vas deferens, sac-like tubular accessory glands and narrow ejaculatory duct which open out as intromittent organ. Seminiferous tubules of the testis display two zones: germinal zone (GZ) and transformation zone (TZ). Spermatogenesis and spermatozoan maturation occurrs within the testes and subsequently reaches the vas deferens via collecting duct. Structurally and functionally the vas deferens is categorized into anterior vas deferens (AVD), middle vas deferens (MVD), and posterior vas deferens (PVD). AVD secretes glycoproteinaceous and mucoproteinaceous products which assist in sperm grouping and spermatiophore formation. MVD and PVD secrete mucoproteinaceous secretion akin to AVD and act as storage centers. The exact role of accessory glands is enigmatic. The copious amount of acidic materials secreted by these ductal glands possibly supports easy transport of spermatophores during copulation. | | Keywords : | | - crustaceans
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