Description Of Appendages Characterizing Sex Differentiation In Himalayan Prawn, Macrobrachium Dayanum

The present communication is a small component of the study pertaining to the investigation on characteristic pattern of breeding dress of Himalayan Prawn Macrobrachium dayanum (Henderson 1893). During the sexually active phase, animal develops various morphometric characters that differentiate i) Reproductive active form from the inactive form and ii) Males from female. A special emphasis has been laid on the identification of characteristic feature like Appendix masculina, petasma and thelycum, brood chamber etc.