Induction of Oocyte Final Maturation in the Catfish Heteropneustes fossilis by Catecholestrongens and Catecolamines

Mature folliculated oocytes were incubated with two catecholestrogens, 2-hydroxyestradiol-17b and 2-methoxy-estradiol-17b and catecholamines; dopamine, noradrenaline and adrenaline in concentration and duration studies. The hydroxyestrogen stimulated germinal vesicle break down (GVBD) in a concentration (1-20mM/ml) and duration (0-30hr) dependent manner; 5mM/ml concentration induced 80% GVBD in 24hr.