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KMID : 0613819990090040460
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Journal of Life Science
1999 Volume.9 No. 4 p.460 ~ p.465
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Study on the Reproductive Biology of the Giant Freshwater Prawn, Macrobrachium rosenbergii(De Man) Ⅲ. Structure of Male Reproductive Organ and Spermatophore
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Abstract
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In the giant freshwater prawn Macrobrachium rosenbergii, the paired testes were united by the testes bridge in a H-shape. During mating male discharged two hemispermtophores from right and left genital pore and they were joined and formed a compound spermatophore in peach shape. Hemispermatophore was considered to be produced at proximal and middle vas deferens region. The compound spermatophore consisted of an eosinophilic inner matrix, a basophilic outer matrix and paired sperm mass burried in the basophilic matrix. The size of compound spermatophore was 6.4∼ 9.3 mm in length and 2.4∼5.1 mm in width regardless of carapace length. After the spermatophore was deposited on female´s ventral sternum behind of 5th pereiopod, it was moved to the ventral surface of 3rd and 4th pereiopods by means of the beating of male´s 1st and 2nd pleopods.
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