Stock assessment and biological characteristics of burbot in Lake Louise, Moose, and Tolsona lakes, Alaska, 1992

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Stock assessment and biological characteristi ...
Robert Lafferty
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January 20, 2010 | History

Stock assessment and biological characteristics of burbot in Lake Louise, Moose, and Tolsona lakes, Alaska, 1992

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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.

Publish Date
Language
English
Pages
37

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Book Details


Edition 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.

Published in
Anchorage, Alaska
Series
Fishery data series -- no. 93-19.

The Physical Object

Pagination
iv, 37 p. :
Number of pages
37

ID Numbers

Open Library
OL15578280M

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January 20, 2010 Edited by WorkBot add subjects and covers
December 11, 2009 Created by WorkBot add works page