Abstract
Abstract Fertilized green eggs of steelhead trout (Salmo gairdneri) and spring chinook salmon (Oncorhynchus tshawytscha) were incubated in moist cotton cloth to determine their ability to withstand periods of dewatering. Results indicated that salmonid eggs can develop normally without being submerged in water, if they remain moist. Dewatered hatching survivals in one test equalled those from control (Heath stack) incubation (X = 90.7%). At the time of sampling, alevins resulting from the dewatered incubations were significantly (P \[lessthanorequalto\] 0.05) longer and heavier than control alevins. There was no significant difference in fry lengths or weights after a 71-day rearing period. The apparent ability of salmonid eggs to develop normally without submergence in flowing water may be useful for hatchery design in areas where water supplies are limited.
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