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Observations of Movements and Habitat Preferences of Burbot in an Alaskan Glacial River System
Author(s) -
Breeser Steven W.,
Stearns F. David,
Smith Michael W.,
West Robin L.,
Reynolds James B.
Publication year - 1988
Publication title -
transactions of the american fisheries society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.696
H-Index - 86
eISSN - 1548-8659
pISSN - 0002-8487
DOI - 10.1577/1548-8659(1988)117<0506:oomahp>2.3.co;2
Subject(s) - tributary , channel (broadcasting) , fishery , habitat , glacial period , fish <actinopterygii> , environmental science , upstream and downstream (dna) , hydrology (agriculture) , oceanography , geology , geography , upstream (networking) , ecology , geomorphology , biology , computer network , cartography , electrical engineering , geotechnical engineering , computer science , engineering
We studied the movements of burbot Lota lota from October 1983 to December 1984 in the upper reaches of the Tanana River, a glacial tributary of the Yukon River in eastern Alaska. We surgically implanted radio transmitters into 21 burbot and monitored the fish by aerial telemetry once every 3 weeks. Fish were relocated up to 68 km downstream and 84 km upstream from release sites. The longest combined upstream and downstream movement observed for an individual fish was 125 km. Burbot were usually relocated in the main river channel, even during summer when peak flows caused high turbidity and channel scouring. Although burbot moved about during all seasons, their longest movements occurred during November–March, the normal period of spawning activity.