Reproductive Cycle, Gametogenesis and Embryonic Development of Nitia Teretiuscula (Bivalvia : Unionidae), from the River Nile at Sohag Governorate, Egypt
The present study dealt with the description of the reproductive and gametogenic cycles and the embryonic development of the freshwater mussel Nitia teretiuscula from the River Nile. Macro and micro-anatomy showed that the present species is dioceous and gonadosomatic indices showed that the species is semiannual and had two gonadal growth periods, a short period of gonadal growth from January ... إقراء المزيد