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Gonadal structure and gametogenesis in scyllarus arctus l. crustacea decapoda

, : Gonadal structure and gametogenesis in scyllarus arctus l. crustacea decapoda. Bollettino di Zoologia 55(4): 299-306

The anatomy of male and female gonads, the oogenesis and the spermatogenesis of Scyllarus arctus are described. The different stages of meiosis are characterized by the nuclear behaviour and cell morphology. The storage of fully vitellinized oocytes and the amount of oogonia were observed throughout the year. The relationship between oogonial multiplication and development of the oocytes is described. The development of the spermatogonial ridges was studied; their frequency showed remarkable variations during the year; the periods of maximal spermatogonial division preceded those of maximal amounts of fully vitellinized oocytes. It was possible, therefore, to correlate male production of meiocytes with egg production and release.


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