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1995 GBD Biological Monitoring/Research Program 



Monitoring 



Juveniles 



Smolt Monitoring Program (Fish Passage Center) 

 1 . External Observations 



a.) Fins, Head, Mouth Area 

 B.) Lateral Line 



Adults 



Snake, Mid-Columbia, Lower Columbia 



1 . External Observations (Columbia River Inter-Tribal 

 Fish Commission and National Marine Fisheries 

 Service) 



Research 



A.) Lab studies initiated Fall/Winter 1994 to develop monitoring 

 techniques to determine link between signs of Gas Bubble 

 Trauma and mortality. (National Biological Service) 



B.) 1. Prevalance of signs of GBD in resident fish below Ice 

 Harbor, Bonneville, and Priest Rapids dams. 

 2. Holding of resident fish and fall hatchery chinook in net 

 pens. 



C.) Migration time through collection system. (National Biological 

 Service) 



D.) Fish distribution in reservoirs. (Columbia River Inter-Tribal 

 Fish Commission) 



E.) Reservoir versus collection system sampling. (National 

 Biological Monitoring Service and Columbia River Inter- 

 Tribal Fish Commission) 



F.) Gill filament sampling versus external signs. (National 

 Biological Service) 



