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Comparative performance of sham radio-tagged and PIT-tagged juvenile salmon
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2000
[PDF-10.68 MB]
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Conference Authors:Northwest Fisheries Science Center (U.S.). Fish Ecology Division. ; Geological Survey (U.S.). Biological Resources Division. ; Western Fisheries Research Center (Geological Survey). ; Columbia River Research Laboratory (Geological Survey). ; United States. Army. Corps of Engineers. Walla Walla District.
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Description:From 23 to 28 April 1999, we released 1,113 fish with gastrically implanted sham radio tags, 1,113 fish with surgically implanted sham radio tags, and 1,071 PIT-tagged fish into the tailrace ofLower Granite Dam. Sham radio tags were similar in size and weight to commercially manufactured coded radio tags forjuvenile salmonids. A PIT tag was embedded in each sham-tag casing by the manufacturer. Migration rates, detection probabilities, and survival were estimated from PIT-tag detections ofindividual fish at Little Goose, Lower Monumental, McNary, John Day, and Bonneville Dams. Differences among migration rates, detection probabilities, and survival relative to the PIT-tagged groups were evaluated by analysis of variance (ANOVA).
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Rights Information:CC0 Public Domain
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Compliance:Library
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