Northwest Fisheries Science Center

Fish Reproduction Projects

Hormonal manipulation of reproduction of sablefish

Control of reproduction in captivity is essential for sustained production of fish and selective breeding for commercial aquaculture. Center researchers are focused on the development of methods for controlling reproduction of sablefish, a promising aquaculture species whose production is hampered by a lack of maturation in females produced in captivity. These cultured females fail to initiate puberty even when they reach a similar body size as wild spawning females. Current studies in this area involve testing the efficacy of hormone treatments (e.g., gonadotropin-releasing hormone agonist, gonadotropin preparations, and sex steroids) on the initiation of vitellogenesis, and evaluating the effects of these therapies at different levels of the reproductive axis.