Modeling the Migratory Patterns and Habitat Use of Migratory Coregonids in the Mackenzie River System

摘要

Diadromous coregonids are an important component of aboriginal fisheries in the Canadian north. Broad whitefish Coregonus nasus, inconnu Steno-dus leucichthys, lake whitefish C. clupeaformis, and Arctic cisco C. autumnalis are the major fish species taken in subsistence fisheries in the Mackenzie River Valley, Northwest Territories (Stewart 1996), with broad whitefish and inconnu being of greater importance. All of these species are highly migratory, moving between coastal feeding areas and upstreamspawning areas, and are likely targeted by multiple fisheries along their migration routes (Re-ist and Bond 1988; Dillinger et al. 1992; Chang-Kue and Jessop 1997; Howland et al. 2000).