Comparison of Growth Rates for Native and Hatchery-stocked Populations of Esox masquinongy in Nogies Creek, Ontario
- 1 June 1960
- journal article
- research article
- Published by Canadian Science Publishing in Journal of the Fisheries Research Board of Canada
- Vol. 17 (6) , 919-927
- https://doi.org/10.1139/f60-072
Abstract
Recent techniques have contributed to a more accurate determination of age by the scale method and a new growth curve for the maskinonge in Nogies Creek has been constructed. Hatchery fish, planted as fingerlings, show similar growth for 4 summers after which their growth rate rapidly falls away from that for the native fish. The hatchery fish require 3 years more than the native fish to reach legal length.A reduction in the annual growth increment for tagged fish ranges from 25% (age IV) to 80% (age VI) of that attained by untagged fish.No significant divergence in the length–weight relationship was observed in the slower growing hatchery fish.This publication has 1 reference indexed in Scilit:
- Growth, Mortality and Movements of a Sanctuary Population of Maskinonge (Esox masquinongy Mitchill)Journal of the Fisheries Research Board of Canada, 1956