GENETIC PARAMETERS OF BODY WEIGHT, FEMALE SPAWNING DATE, AND AGE AT SEXUAL MATURATION IN RAINBOW TROUT

A synthetic strain of rainbow trout (Oncorhynchus mykiss) characterised by fast growth, a spring spawning season, and a low incidence of precocious maturation is being developed for Ontario aquaculture. Faster growth reduces costs by decreasing the amount of time required to rear fish to market size. Spawning time also affects production since the seasonal reproductiv