Upper Midwest Environmental Sciences Center
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Peake, S., F. W. S. Beamish, R. S. McKinley, C. Katopodis and D. A. Scruton (1995). Swimming performance of lake sturgeon Acipenser fulvescens. Canada Department of Fisheries and Oceans, Canadian Technical Report of Fisheries and Aquatic Sciences No. 2063.
Fishways have traditionally been designed to provide safe passage for jumping fish and only recently have non-jumping species been considered. Concern over dwindling populations of lake sturgeon Acipenser fulvesens has focused attention on fishway designs that accommodate its swimming abilities. The objective of this study was to derive models that describe swimming endurance and critical speed for lake sturgeon. Critical speed increased with temperature and with total length. Endurance at sustained and prolonged swimming speeds increased with temperature but was independent of temperature at higher burst speeds. Endurance increased with total length at all speeds. Swimming performance of lake sturgeon, relative to body length, is inferior to that of salmonids. Fishway designers need to consider swimming ability, space requirements and behavior of lake sturgeon to ensure them safe passage of migratory obstructions.