De velopmental stages observed during experimental culture of the egg bearing cyclopoid copepod Oithona similis (Claus, 1866)
days. The life cycle had five naupliar stages such as: N1 1 s t d ay; N2 3 rd d ay; N3 5 t h d ay; N4 8 t h d ay and N5 10 t h day The naupliar stage was followed by six copepodid stages (C1 1 2 t h d ay; C2 1 4 t h d ay; C3 1 6 t h d ay; C4 19 t h day C5 21 s t d ay; C6 2 3 rd d ay) and a single pre adult stage in the laboratory conditions. Maximum survival of 30% copepodids was attained during 23 days of rearing in culture flasks of 1l capacity provided with micro algal diet size <5u.