Effects of Size at Release in Rainbow Trout Salmo Gairdneri Stocked in A Winterkill LakeMicroform - 1987
Winterkill lakes are generally very productive and are suitable for supporting a trout population during the ice-free period, although they cannot sustain a population when ice and snow cover reduces the dissolved oxygen concentrations. This study was undertaken to determine whether yearling rainbow trout could be graded to include a large number of precocious males, which could then be utilized to develop a fishery in a winterkill lake, since such males become less attractive for fishing purposes after sexual maturity and spawning. The 3 size groups used for comparison were progeny from the 1984 spawning run at Pennask Creek. The fish were released into Horseshoe Lake in May 1985 and sampled for length, weight, clips, sex, maturity and gonad weights in October 1985. Fish were compared in 2 catchable size classes.
Publisher: Victoria : Ministry of Environment and Parks, 1987
Description: 15 p
Branch Call Number: MF BC-DOC 90-00637