Cathepsin B & D and the Survival of Early Embryos in Red Spotted Grouper, .

Survival of embryos largely depends on yolk processing during early development. Proteolytic enzymes, cathepsin B & D ( & ) are known to have some important roles in yolk processing of various fish species. Mature female red spotted groupers were injected with human chorionic gonadotropin (HCG) to induce ovulation.