Stock assessment and biological characteristics of burbot in Lake Louise, Moose, and Tolsona lakes, Alaska, 1992
By: by Robert Lafferty and David R. Bernard.
Contributors: Bernard, David R.; Alaska. Division of Sport Fish.
Series: Fishery data series -- no. 93-19.
Publisher: Alaska Dept. of Fish and Game, Division of Sport Fish
Published: 1993
Place of publication: Anchorage, Alaska
Language: eng
Number of pages: 37
Subjects: Burbot -- Alaska.; Fish populations -- Alaska -- Lake Louise.; Fish populations -- Alaska -- Moose Lake.; Fish populations -- Alaska -- Tolsona Lake.
Description: Abundance and indices of abundance were estimated for populations of burbot Lota lota in Lake Louise, Moose, and Tolsona lakes in Southcentral Alaska. Sampling occurred during the month of June 1992. Mean catch per unit of effort of fully recruited burbot (450 millimeters total length and larger) per 48-hour set ranged from 0.41 (SE = 0.03) in Lake Louise to 3.14 (SE = 0.51) in Tolsona Lake. Abundance during 1991 of fully recruited burbot estimated with mark-recapture experiments was greatest in Lake Louise (4,467; SE = 722) and lowest in Moose Lake (1,098 fish; SE = 175). Annual survival rate for fully recruited burbot in Lake Louise was 73.3%. However, overwinter survival rates for fully recruited burbot in Moose and Tolsona lakes ranged from 67.7% to 70.7%. Spring catchability coefficients of fully recruited burbot (0.634) continue to be higher than summer catchability coefficients (0.426), indicating that larger catches needed for mark-recapture experiments should occur within 30 days after thaw or 30 days before ice cover.
Notes: "August 1993."

"Partially financed by the Federal Aid in Sport Fish Restoration Act ... under project F-10-8, job no. S-2-4.

Includes bibliographical references (p. 22-24).

Also issued online.