The effects of maternal status of Arcto-Norwegian cod on egg quality and vitality of early larvae. 1. The collection and characteristics of the cod females, a pilot study
Original version
This report is not to be cited without prior reference to the authorsAbstract
On the basis of a new field method to determine the stage of spawning, egg
groups from Arcto-Norwegian cod females in different stage of spawning were
selected for further studies on egg quality and vitality of early larvae. The
fertilization rate decreased with increasing stage of spawning, while the frequency
of normal cell division seems unaffected by this variable. A high incidence of
normally developing embryos was always correlated to a high fertilization rate.