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Mean Smolt Age Estimation and Under-Aging Bias of Nass River Steelhead Popula...
In the Nass River watershed, juvenile and adult steelhead scales were collected to summarize the mean smolt ages for major summer and winter steelhead populations, and to investigate the lack of the first-year annulus formation which results in under-aging... -
The Incidence of Regenerated Scales Among Fraser River and Skeena River Socke...
Scales of 4 and 5 year-old Skeena River and 4 year-old Fraser River sockeye of the 1963 brood year were examined for the incidence of regenerated scales. For the Skeena and Fraser 4 year-old sockeye the incidence of regenerated scales was 11.1% and 8.2%,... -
New growth on Scales of Seaward-Migrating Sockeye Salmon (Oncorhynchus nerka)...
The purpose of this report is to compare the incidence of circuli formed after the annulus (Fig. 1) (referred to here as "new growth") on the scales of early migrants with that on scales of the late migrants for the years 1958 to 1965.