Stream Habitat Utilization by Cohabiting Underyearlings of Chinook (Oncorhynchus tshawytscha) and Coho (O. kisutch) Salmon in the Big Qualicum River, British Columbia
- 1 July 1970
- journal article
- Published by Canadian Science Publishing in Journal of the Fisheries Research Board of Canada
- Vol. 27 (7) , 1215-1224
- https://doi.org/10.1139/f70-144
Abstract
Habitat distributions of chinook and coho salmon underyearlings in the Big Qualicum River, Vancouver Island, B.C., under controlled flow conditions indicated that at similar sizes their habitat requirements during the first 3 months of stream life were similar. Just after emergence, fry of both species occupied marginal areas in association with bank cover. With increased size, the young fish moved into habitat of progressively higher velocity. However, differences between the species in time of emergence and size evidently resulted in a high degree of spatial segregation. Chinook fry emerged about a month earlier than coho, were larger upon emergence, and grew at a faster rate. Apparently, because of their larger size at a given time, chinook preferred higher velocity locations than coho.Keywords
This publication has 1 reference indexed in Scilit:
- Movements of Young Atlantic Salmon in a Small StreamJournal of the Fisheries Research Board of Canada, 1964