The production of single-sex and sterile populations of Atlantic cod (Gadus morhua) for aquaculture: fish health considerations with a focus on Loma morhua

摘要

The high rate of pre-harvest sexual maturation of farmed Atlantic cod (Gadus morhua) is a major constraint to the commercialization of cod aquaculture. Sexual maturation has been eliminated in other species of fish by using all-female triploid stocks.This paper describes the methods used to develop this technology successfully for Atlantic cod. However, little data are available on the culture characteristics of triploid cod. They are predicted to be more susceptible to mortality from Loma morhua infection because of the well documented effects of triploidy on blood cell size. An experimental infection trial is currently underway to test this prediction.