WASHINGTON (Cont. ) 



simultaneously with malachite green for the control of fungus on eggs. 



Spring Creek Fish-cultural Station, Underwood; began Fall 1953; to close 

 1954; $200; Harlan E. Johnson, Leader; reports available. 



Address inquiries to: Lewis R. Garlick, as in No. 1 above. 



U. S. Fish and Wildlife Service , Branch of Fishery Biology 



1. The Nutritional Requirements of Chinook Salmon. 



A study to determine the quantitative nutritional requirements of chinook 

 salmon. 



Hdqrs. University of Washington; began September 1951, continuing; Robert 

 R. Rucker and John E. Halver, Leaders. 



Address inquiries to: John E. Halver, Chief, Salmon Nutrition Laboratory, 

 Willard (P. O. Cook), Wash. 



2. Comparative Histo-Pathology of the Salmonids. 



This project is to determine the normal histology of the organs and tissues 

 of salmonids and to study the changes brought about under defined nutritional con- 

 ditions and diseases, and to determine if well-defined histological differences 

 exist between wild and hatchery reared salmonids which might indicate desirable 

 or undesirable qualities of hatchery fish. 



Hdqrs. Salmon Nutrition Laboratory; began August 1953, continuing; E. M. 

 Wood, John E. Halver, Leaders. 



Address inquiries to: John E. Halver, as in No. 1 above. 



3. Disease Research. 



Studies indicate that virus bacteria and parasites are the major etiologic 

 agents responsible for several serious outbreaks of disease. This investigation 

 proposes to study the diseases of fish, their effect on the fish, how infection is 

 transmitted, determine source of infection, develop methods for identification 

 and development of control measures. 



Hdqrs. University of Washington; began September 1952, continuing. 



Address inquiries to: Robert R. Rucker, Chief, Western Fish Disease 

 Laboratory, University of Washington, Seattle, Wash. 



4. Development of Better Practical Diets. 



A survey to explore growth potential and nutritional adequacy of potential 

 fish food products and to develop practical diets for salmon. 



Hdqrs. Salmon-Cultural Lab. , Entiat, Washington; began 1948, continuing. 



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

 Entiat, Wash. 



5. Development of Hatchery Equipment. 



The objective is to determine environmental factors affecting development 

 of salmon reared under artificial conditions and to develop rearing ponds which 

 will satisfy requirements for optimum environmental conditions and efficient 

 operation. Model studies of raceway, Foster-Lucas, and circular ponds and 

 correlation of pond characteristics with hydraulic conditions to be the first phase 

 of investigation. 



Hdqrs. Salmon -Cultural Lab. , Entiat; began 1948, continuing. 



Address inquiries to: R. E. Burrows, as in No. 4 above. 



6. Migration and Mortality of Fingerlings at Bonneville Dam. 



The objectives are to determine species, origin (hatchery or natural propa- 

 gation), size, age and time of seaward migration of salmon and steelhead fingerlings. 



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