OOGENESIS IN THE NILE BOLTI, TILAPIA NILOTICA L.

OOGENESIS IN THE NILE BOLTI, TILAPIA NILOTIOA L.
By
A.F.A. LA1’IF (Ph.D.)
Institute of Oceanography and Eisheries,
B.E. SAADY (M.Se.)
Zoology Department, Fcculty of Science, University of Cairo
I.-INTRODUCTION
Bl:LLE’l’IN
Since the end of the Ia-t century, the study of oogenesis III fishes has
attracted the attention of many authors. They are mainly interested in
the eludication of the morphological changes which take place in the
course of the growth of the oocytes. The whole course of development
of the oocytes is divided into tages, phases or periods. Thus, Yamamoto
{1956 a), divided the process of differentiation of