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3.1.10. Reproductive systems of male and female prawns
The male reproductive system of freshwater prawn consists of a pair of testes united at the anterior end. It is located within the cephalothorax region of the male. The female reproducitve system consists of a massive ovary situated in the cepahlothorax region. The ovary can be clearly seen from the dorsal side of the body in the CT region as a yellow coloured mass. The oviduct arising from the ovary opens outside in the base of the 3rd walking leg. The seminal receptacles are present in the exterior of the female genital openings situated in the left and right sternites of sixth thoracic segment. Externally four pairs of pleopods serve as accessory reproductive organs present on the inner side of the second to fifth segments of the abdominal flap. Each pleopod consists of a basal propodite from which arise the medial endopodite and lateral exopodite. The exopodite bears a large number of pinnate setae. A cluster of long and very smooth setae are on the endopodite, to which the extruded eggs are attached at the time of spawning . |
Last modified: Saturday, 24 December 2011, 7:56 AM