NEW YORK (Cont. ) 



fish are tagged and released. Recovery for tags in both tributaries and lakes 

 permits evaluation of utilization in the two habitats. A creel census by Game 

 Protectors permits estimation of the total stream catch during the opening 

 week of the fishing season. A detailed analysis of the life histories in the dif- 

 ferent lakes is made from scale analyses. Direct observations were also 

 carried out on habits and growth of fry and parr. A special study, completed 

 in 1956, was concerned with qviality of tributary streams for spawning. 



New York Conservation Department and U. S. Fish and Wildlife Service 

 cooperating; Keuka, Seneca and Skaneateles Lakes; began March 1946, to 

 close June 1957; $2,750; Wilbur L. Hartman and Richard W. Hatch, Leaders. 



Address inquiries to: Dwight A. Webster, Fernow Hall, Cornell Uni- 

 versity, Ithaca, New York. 



2. Finger Lakes Investigations; Life History and Population Dynamics of Small- 

 mouth Bass in Cayuga Lake, New York 



Bass concentrate in a localized area of Cayuga Lake during the fall months. 

 It is possible to accurately census the angling catch here as well as obtain bass 

 for tagging. From data now available the relation of the fall concentration to 

 the lake as a whole can be established and fluctuations in growth and abundance 

 studied. Possible use of stocking hatchery- reared fingerling bass in supple- 

 menting the natural population has received attention; over 120, 000 marked 

 fish have been planted. Field work in this project has been discontinued and 

 data are being summarized. 



New York Conservation Department cooperating; Cayuga Lake, Tompkins, 

 Cayuga, and Seneca Counties; began September 1941, to close 1957; $1,150; 

 Dwight A. Webster, Leader; reports available. 



Address inquiries to: Dwight A. Webster, as in No. 1 above. 



3'. Finger Lakes Investigations: Management of Lake Trout in Cayuga Lake With 

 Particular Reference to the Role of Hatchery Trout 



Principal objectives are concerned with (1) the relative survival of hatchery 

 reared fingerlings and yearling lake trout and (2) the contribution of the hatchery 

 stock to the total population. In addition, the role of lamprey eels, exploitation, 

 and mortality rates are considered. 



The annual stocking program consists of 80,000 fall fingerlings (half 

 marked) and 8, 000 spring yearlings (all marked). Sampling is primarily in 

 summer using a graded series of gill nets (1^- to 3j-inch stretched mesh), of 

 which a total of 25, 000 feet is set according to predetermined design. Addi- 

 tional sampling is carried out on the spawning grounds. 



Nev.' York Conservation Department cooperating; Cayuga Lake; began 

 August 1946, indefinite; $5,250; Dwight A. Webster, Leader; reports available. 



Address inquiries to: Dwight A. Webster, as in No. 1 above. 



4. Population Dynamics of the Common Whitefish (Coregonus clupeaformis) and 

 Round Whitefish (Coregonus quadrilaterle) in Little Moose Lake 



The ultimate aim is to improve forage conditions for landlocked salmon 

 (Salmo salar). An attempt is being made to reduce the numbers of adult white- 

 fish of both species to encourage larger populations of young stock (potential 

 salnnon food). Control measures consist of trap netting in spawning season. 

 Owing to lack of exploitation, growth in the common whitefish, in particular, 

 has stagnated after sexual maturity and production of young is of a low order. 

 Statistics on growth, age composition, mortality rates and estimated popula- 

 tion are taken to assess progress of programs. Complementary data are also 

 available on growth and abundance of brook trout, lake trout, and salmon. 



New York Conservation Department cooperating; Herkimer County; began 



98 



