NEW YORK (Cont. ) 



to incorporate an upstream trap, are operated here and at the end of the streann 

 where a barrier dam also exists. Rough fish captured are removed and trout 

 are tagged at these points. The traps plus angling at intervening points resulted 

 in the tagging of about 700 trout above 6 inches in length, the purpose of which is 

 to determine relationships of trout populations residing in various sections of the 

 stream. A series of scale samples, length and weights have been taken to 

 establish a criterion upon which to judge progress of the work. 



Franklin County; began October 1952, indefinite; $2, 300; Dwight A. Webster, 



Leader. 



Address inquiries to: Dr. Dwight A. Webster, Department of Conservation, 



Cornell University, Ithaca, N. Y. 



2. Age Determination of Lake Trout ( Salvelinus namaycush ) in Cayuga Lake. 



Over a period of 12 years scale samples and pertinent data have been col- 

 lected on some 2618 specimens, a large proportion of which are marked fish 

 of known age. Scales have been mounted in plastic and read independently of 

 knowledge of size, mark, or previous assessments of age. Multiple readings 

 on one series and age determinations on fish of known age will provide indices 

 of scale reading consistency and accuracy in this difficult species. 



Hdqrs. Ithaca; began June 1952, to close Jime 1954; Carl Parker, Leader. 



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



3. Finger Lakes Investigations: Life History and Population Dynamics of the 

 Smallmouth Bass (Micropterus dolomieui) in Cayuga Lake. 



Two-fold objectives consist of long term observations on population and growtl 

 trends in relation to possible management practices; and to give students exper- 

 ience in techniques and angler-biologist relations under field conditions. Annual 

 field work consists of fin-clipping hatchery fingerlings planted in lake, tagging 

 bass taken in spawning runs in major tributaries and in creel census and tagging 

 of bass in a concentrated fall fishery in area known as Flat Rock. 



State Conservation Department cooperating; Tompkins, Cayuga, and Seneca 

 Counties; began September 1941, indefinite; $3,660; Dwight A. Webster, Leader; 

 reports available. 



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



4. Finger Lakes Investigations: Contribution of Hatchery Reared Fingerling and 

 Yearling Lake Trout (Salvelinus nannaycush) to the Population of Cayuga Lake. 



Principal objectives consist of evaluation of relative survival of fingerling 

 and yearling lake trout, observations on the proportion of hatchery reared and 

 naturally produced lake trout in the population, and the relative survival of spot- 

 planted versus scatter -planted fingerlings. 



State Conservation Department cooperating; Tompkins, Cayuga, Seneca 

 Counties; began August 1946, indefinite; $3,120; Dwight A. Webster, Leader. 



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



5. Finger Lakes Investigations: Attempts to Establish Rainbow Trout (Salmo 

 gairdneri) in Cayuga Lake. 



For reasons unknown, rainbow trout have never become established in 

 Cayuga Lake, despite hatchery plantings and sizeable self-sustaining populations 

 in the other Finger Lakes of Central New York. Annual plantings of 10, 000 

 yearling and 1, 000 year-and-a-half old rainbow trout, all fin-clipped, have been 

 made from spring 1947 to spring 1953 without notable success, as evidenced by 

 gill netting or opening day creel census on the major tributaries. As all plant- 

 ings to date have been of domesticated stock (Wytheville, West Virginia), eggs 



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