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Family size and effective population size in a hatchery stock of coho salmon (Oncorhynchus kisutch)

September 16, 2015

Means and variances of family size measured in five year-classes of wire-tagged coho salmon (Oncorhynchus kisutch) were linearly related. Population effective size was calculated by using estimated means and variances of family size in a 25-yr data set. Although numbers of age 3 adults returning to the hatchery appeared to be large enough to avoid inbreeding problems (the 25-yr mean exceeded 4500), the numbers actually contributing to the hatchery production may be too low. Several strategies are proposed to correct the problem perceived. Argument is given to support the contention that the problem of effective size is fairly general and is not confined to the present study population.

Citation Information

Publication Year 1986
Title Family size and effective population size in a hatchery stock of coho salmon (<i>Oncorhynchus kisutch</i>)
DOI 10.1139/f86-302
Authors R.C. Simon, J.D. McIntyre, A.R. Hemmingsen
Publication Type Article
Publication Subtype Journal Article
Series Title Canadian Journal of Fisheries and Aquatic Sciences
Series Number
Index ID 70162144
Record Source USGS Publications Warehouse
USGS Organization Western Fisheries Research Center