Final maturation and ovulation provoked by supply of homologous hypophysis in Hoplias m. malabaricus (Pisces, Erythrinidae).

: The final maturation and the ovulation were induced in recently collected specimenes of Hoplias m. malabaricus that show oocytes with complete vitellogenesis, by using homologous hypophysis. The hormonal supply was a gradual and positive results were obtained with 9 to 10 hypophysis/kg injected according to 3 different methods. The time of oocytes' maturation from the first dose ranges between 32 and 60 hours a 18 degrees C. The stages of maturation of the oocyte were controlled by intraovaric cannulations using a numerical index to determine the position of the germinal vesicle.