"During the 1969-70 project year emphasis was placed on spawning and rearing clams which had not been previously spawned successfully. Salinity-temperature tolerances were determined for the laboratory-reared clam larvae. Field studies comparing growth of laboratory-reared and imported Pacific and Kumamoto oysters were continued. In addition, studies comparing various methods of oyster culture were initiated and winter survival of laboratory-reared oyster spat was studied. Laboratory-reared butter clams planted in Yaguina and Netarts bays were monitored for growth and survival. A plot of Manila littleneck clams was also established in Yaquina Bay." (Introduction)
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