Effects of Passing Juvenile King Salmon (Oncorhynchus tshawytscha) and American Shad (Alosa sapidissima) Through a Single Impeller Volute Pump
Alosa sapidissima, American shad, delayed mortality, fish passage, fish pumps, handling, injuries, juvenile, mortality, Oncorhynchus tshawytscha, pumps, salmon, shad, smolt, swimming, volute pump
Young-of-the-year king salmon and American shad were pumped at 550 and 700 RPM through a Neilson single impeller volute pump. Erratic swimming was observed in both species immediately following pumping, however, few external injuries were apparent on either species. No immediate or delayed mortalities were attributable to the pump. King salmon smolts and American shad were more susceptible to handling stress than juvenile king salmon.