Evaluation of stocked game fish in the Tanana Valley, 1995
By: by Cal Skaugstad and Mike Doxey.
Contributors: Doxey, Michael R.; Alaska. Division of Sport Fish. Statewide Research and Technical Services Unit.
Series: Fishery data series -- no. 96-44.
Publisher: Alaska Dept. of Fish and Game, Division of Sport Fish, Research and Technical Services
Published: 1996
Place of publication: Anchorage
Language: eng
Number of pages: 32
Subjects: Fish stock assessment -- Alaska -- Tanana River Region -- Statistics.; Fish stocking -- Alaska -- Tanana River Region -- Statistics.; Fishery management -- Alaska -- Tanana River Region -- Statistics.; Fisheries -- Alaska -- Tanana River Region -- Statistics.
Description: Evaluation of visual implant tags as marks to distinguish individual rainbow trout Oncorhynchus mykiss, estimation of reproduction by Arctic char Salvelinus alpinus in Harding Lake, and analysis of the cost effectiveness of the stocking program in the Tanana Valley are described. Visual implant tags were judged unacceptable as marks when within 72 days, 117 of 323 hatchery-held fish had shed their tags while tags in another 31 fish became unreadable. Sampling in Harding Lake was suspended halfway through the study when no juvenile Arctic char had been captured in gill nets, and incidentally caught lake trout S. namaycush and northern pike Esox lucius were dying at high rates. Of the major stocked fisheries with management plans in 1994, objectives for cost-per-angler day was met only at Quartz Lake. Cost-per-angler-day averaged $5.12 that year across the program. Objectives for harvest rates were not met anywhere in 1994, and stocked fisheries at small lakes (as a unit) was the only component of the program that drew enough fishing effort to meet its objective for 1994. Cost-per-angler-day was lower in 1994 than in 1993. Over both 1993 and 1994 together, Arctic grayling Thymallus arcticus proved the cheapest species to stock ($0.34 apiece) and Arctic char the most expensive ($14.94 apiece).
Notes: "November 1996"

Includes bibliographical references (p.19-20).

Also issued online.

Partially financed by the Federal Aid in Sport Fish Restoration Act (16 U.S.C. 777-777K) Project F-10-11, Job no. E-3-1(a).