FACTORS AFFECTING GROWTH AND SURVIVAL OF COHO SALMON (Oncorhynchus kisutch) AND CHINOOK SALMON (O. tshawytscha) IN SALTWATER NET‐PENS IN PUGET SOUND

Abstract
Experimental marine net‐pen systems for the culture of Pacific salmon have been developed in the United States and Canada and have resulted in the establishment of fish farms in Washington, Alaska, Maine, and British Columbia. Fish farmers have encountered biological problems that constrain production through decreased growth and survival. These factors include: feed amounts (ration), dissolved oxygen levels and rearing densities, saltwater adaptation, physiological stage of smoltification, and disease. This paper discusses the relative severity of these problems and current practices for solving them.