WASHINGTON (Cont. ) 



15. Comparative Histology of Salmonids 



The objectives are to determine the normal histology of the organs and 

 tissues of salmonids and to define the change brought about xinder particular 

 nutritional deficiencies and other pathological conditions. 



Willard; began August 195 3, continuing; John E. Halver, Leader. 



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

 tory, Cook, Washington. 



16. The Nutritional Requirements of Chinook Salmon 



A study to determine the quantitative nutritional requirements of chinook 

 salmon in terms of the basic nutrients and to define the metabolic role of each 

 nutrient. 



Willard; began September 1951, continuing; John E. Halver, Leader. 



Address inquiries to: John E. Halver, as in No. 15 above. 



17. Study of Influencing Factors on King Salmon Egg to Fry Survival in Mill Creek, 

 California 



The general objectives of egg to fry survival studies in this project are 

 to determine: (1) the survival rate of spawn and factors influencing mortality 

 under simulated natural conditions, (2) an optimum spawning population in 

 relation to a given number of square yards of spawning gravel, (3) the survival 

 rates of spawn under hatchery methods when compared to simulated natural 

 conditions, (4) if there are advantages in the "Vibert" hatching boxes over 

 natural hatching or hatchery methods, (5) the difference, if any, in the sur- 

 vival rate of spawn from early, peak, or late run adults, (6) the effect of 

 various sex ratios on production of young salmon, and (7) the calculated fresh 

 water mortality in the stream based on upstream counts of several years' runs 

 and samples of downstream migrating fry. 



Headquarters- Seattle; Los Molinas; began 1952, to close 1962; $21,804; 

 H. A. Gangmark, Leader; reports available. 



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



WEST VIRGINIA 



Conservation Commission 



1. Population Manipulation Studies on West Virginia Smallmouth Bass Streams 



Primary project objective was to evaluate population manipulation in 

 streams as a tool of fish management. Different segments of the fish popu- 

 lation were removed from three experimental streams with the effect of 

 such rennoval on remaining fish being studied. 



Other objectives were improvement of electrical fishing gear, creel 

 census, studies, study of natural population fluctuations, and population 

 studies in streams of West Virginia's eastern panhandle. 



Petersburg; began May 1952, closed July 1956; $20, 000; Carl Sullivan, 

 Leader; reports available. 



Address inquiries to: Carl Sullivan, Division of Fish Management, 

 Charleston, West Virginia. 



2. Lake Construction and Development Program 



This project consists of construction of public fishing lakes. 

 Began January 1949, indefinite; $65, 000; Harry Van Meter, Leader. 

 Address inquiries to: Harry Van Meter, Chief, Division of Fish Man- 

 agement, Charleston, West Virginia. 



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