Traditional Hatchery Research Articles

Farming of salmonids in Russia

Abstract. Salmonids of the genera Salmo and Oncorhynchus are the main aquaculture Interest of Russia. Culture of salmonids, as well as other species, is determined by two factors: vulnerability of coastal areas to storms and high temperatures in the south of Russia and long periods of icing and low temperatures in the north. Adaptation of salmonids to these conditions therefore is an important aspect of research in Russia. The culture of salmonids in Russia can be divided into three categories: (1) traditional hatchery rearing and release of fingerlings into natural populations; (2) acclimatization of Pacific salmon through transoceanic transportation; and (3) commercial production in sea cages.

Success in a Hatchery Program with Fall Chinook Salmon by Simulating the Natural Life History of the Stock

Abstract Life histories of juvenile fall chinook salmon (Oncorhynchus tshawytscha) vary among and within stocks. In Elk River on the southern coast of Oregon, most juveniles live in fresh water for 6 to 7 months, grow to a large size, and migrate to sea in autumn. When this life history was simulated in the rearing program at Elk River Hatchery for the 1968, 1969, and 1970 broods, esimates of survival back to the river of five different hatchery releases averaged 4.3% and ranged from 3.3 to 5.8%. A release of 1968-brood fish reared until they were yearlings had a survival of 2.2%. However, when fish from the 1970 brood were reared in the hatchery for only a short period and released in early summer, as in a more traditional hatchery rearing program for fall chinook salmon, survival to return was only 0.3%. These results suggest that simulating the natural life history of native stocks in hatchery programs can have substantial benefit.