PENNSYLVANIA (Cont. ) 



such as muskellunge walleyes and bass into new waters; water level control where 

 possible on a fall and spring basis; and possible experimental regulations provid- 

 ing stringent size restrictions on predatory game species. 



Department of Forest and Waters cooperating; statewide; began May 1953, 

 continiiing; $8, 000; Gordon L. Trembley, Leader. 



Address inquiries to: Albert S. Hazzard, Pennsylvania Fish Comnnission, 

 Harrisburg, Pennsylvania. 



12. Studies on Establishing Rainbow Trout Runs 



The project aims to determine whether a significant run of rainbow trout 

 into tributaries of Lake Erie can be established through plantings of fingerlings. 

 Runs of sexually mature rainbows into several tributaries of Lake Erie occur 

 each spring. A test stream and several tributaries have been stocked with 

 marked rainbow fingerlings every fall beginning in 1952. Netting operations 

 are carried on in the experimental stream each spring to record the number of 

 individuals returning to spawn. 



Pennsylvania tributaries of Lake Erie; began August 1952, to close 1961; 

 $750; Alfred Larsen, Leader; reports available. 



Address inquiries to: Gordon L. Trembley, as in No. 5 above. 



13. General Stream Survey 



This project is an investigation of streams for inventory of chemical, 

 physical, and biological factors relating to fish management. Specific con- 

 sideration involved in this investigation include determination of basic 

 fertility, rate of flow, gradient, temperatures, cover, shelter, pool-riffle 

 ratio, fish population, pollution degree, and evaluation of watershed man- 

 agement. 



Statewide; began 1950, continuing; $40, 000; Robert Bielo, Daniel Reinhold, 

 Richard Reppert, Roger Reed, and Curtis Simes, Leaders; reports available. 



Address inquiries to: Gordon L. Trembley, as in No. 5 above. 



14. General Lake Survey 



This project diagnoses factors limiting production and harvest of lake 

 fishes using common field and laboratory techniques. It includes the use of 

 echo sounding gear and self-contained underwater breathing apparatus. Methods 

 of obtaining estimates of fish populations are studied and a search is under way 

 for more efficient fish collection gear. 



Statewide; began June 1949, continuing; $15,000; De Wayne E. Campbell, 

 Leader; reports available. 



Address inquiries to; Gordon L. Trembley, as in No. 5 above. 



15. Water Inventory 



This project consists of a general biological survey of all of the water areas 

 within the boundaries of the Allegheny National Forest. Plans for coordinating 

 the fish management of these waters, among the cooperating agencies, are being 

 prepared. 



U. S. Fish and Wildlife Service and U. S. Forest Service cooperating; 

 Northwestern Pennsylvania; began 1955, closed 1956; $750; James Otis, Leader. 



Address inquiries to: Joseph Boccardy, c/o U. S. Forest Service, Post 

 Office Building, Warren, Pennsylvania. 



16. Evaluation of New Trout Diets 



New diets and dietary supplennents are tested for growth, economy, and 

 other factors. Experiments with fish food pellets have been set up at several 

 fish cultural stations with the objective of converting entirely to this type of 

 food if results are satisfactory. Diets are tested that may be of value for 



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