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An Assessment of Freeze Brand and PIT Tag Recovery Data at McNary Dam, 1987 Annual Report [report]

Clinton Scott McCutcheon
1989 unpublished

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This study evaluated mark recovery data from PIT-tagged and freeze -branded fish recovered at McNary Dam in 1987. Hatchery and river-run populations of yearling chinook salmon (Qncorhvnchus tshawvtscha), sockeye salmon <n. nerka) and steelhead (Q. mykiss) were used in this investigation. Paired groups of PIT-tagged and freezebranded juvenile salmonids were released upstream from McNary Dam and subsequently recaptured at that site. PIT tags were recovered in significantly higher proportions than
more » ... freeze brands regardless of species or stock. Furthermore, for chinook and sockeye salmon, PIT tag recovery data exhibited less variability. Reasons for the discrepant intermark recovery rates are discussed.
doi:10.2172/6129816 fatcat:goum4l2babfejne3v7kqpjg5ve
Citation

Clinton Scott McCutcheon. "An Assessment of Freeze Brand and PIT Tag Recovery Data at McNary Dam, 1987 Annual Report." (1989)