Hatching of halibut (Hippoglossus hippoglossus L.) eggs under different light conditions
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Original versionThis report is not to be cited without prior reference to the authors
Halibut eggs were hatched in total darkness and in illumination (60 lux light). A simoultanous hatching to a final hatching of 99%, and positive buoyant larvae in the dark hatching jars were experienced. In the illuminated group the hatching was postponed, hatching curve progressed: more slowly to a final hatching of 72 and 80% in two experiments. Both eggs and larvae developed a slightly negative buoyancy.