WASHINGTON (Cont. ) 



University of Washington cooperating; headquarters - Seattle; began 1955, 

 continuing; $700,000; Clinton E. Atkinson, Leader; reports available. 

 Address inquiries to: As in No. 1 above. 



10. Research of Fishway Problems 



The Bonneville Research Facility was constructed to acquire information 

 that will iiiake possible the design of more efficient and more economical fish 

 passage facilities for bo+^h upstream and downstream migrant salnnon. Full 

 scale fishway situations are created under controlled laboratory conditions 

 and the reactions of migratory fish are measured as the fish actually migrate 

 through them. The project also seeks systematically the principles of fish 

 orientation that are basic to the design of adequate fish passage facilities. 



Corps of Engineers cooperating; Bonneville Dam; began 1955, to close 1960; 

 $63,059; G. B. Collins, C. H. Filing and H. L. Raymond, Leader. 



Address inquiries to: Clinton E. Atkinson, as in No. 1 above. 



11. Predator and Competitor Studies of Resident Fishes 



This project aims to measure the impact of predatory and competitive 

 fishes upon resident and migratory game and commercial fishes of the 

 Columbia River. The important phases of the study will be the distribution 

 and abundance of scrapfish populations, particularly in relation to salmon 

 spawning and nursery areas; scrapfish predation on young salmon; food compe- 

 tition between scrapfishes and young salmon; space competition; and the 

 effects of scrapfish as vectors of diseases affecting salmonoids. 



Columbia River; began July 1956, continuing; $16,326; R. B. Thompson, 

 Leader. 



Address inquiries to: Clinton E. Atkinson, as in No. 1 above. 



12. Development of Hatchery Equipment and Techniques 



All phases of hatchery procedure are explored for the purpose of improving 

 equipment and techniques. 



Salmon-cultural Laboratory, Entiat; began 1948, continuing; $10,000; 

 Roger E. Burrows, Leader; reports available. 



Address inquiries to: Roger E. Burrows, Salmon-Cultural Laboratory, 

 Entiat, Washington. 



13. Development of Better Practical Diets 



A survey by means of feeding trials to explore growth potential and nu- 

 tritional adequacy of potential fish food products and to develop practical diets 

 for salmon. 



Salmon-cultural Laboratory, Entiat; began 1948, continuing; $3,000; 

 Roger E. Burrows, Leader; reports available. 



Address inquiries to: Roger E. Burrows, as in No. 12 above. 



14. Disease Research 



Studies indicate that parasites, bacteria, and virus-like agents are major 

 causes of serious losses among fish populations. This investigation studies 

 the etiologic agents, their effects on fish, methods of transmission, sources, 

 identification, and determines methods for control. 



University of Washington; began September 1952, continuing; $32,500; 

 Robert R. Rucker, Leader; reports available. 



Address inquiries to: Western Fish Disease Laboratory, Fisheries 

 Center, University of Washington, Seattle 5, Washington. 



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