Genetic Differences in Growth and Survival of Juvenile Hatchery and Wild Steelhead Trout, Salmo gairdneri

摘要: Relative growth and survival of offspring from matings hatchery wild Deschutes River (Oregon) summer steelhead trout, Salmo gairdneri, were measured to determine if fish differ genetically in traits that can affect the stock–recruitment relationship populations. Sections four natural streams a pond each stocked with marked (lactate dehydrogenase genotypes) eyed eggs or unfed swim-up fry three matings: × (HH), (HW), (WW). In streams, WW had highest HW rates when significant differences found; pond, HH rates. The different they interbreed may reduce number smolts produced. Hatchery procedures be modified genetic between fish.