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Table 1 Prevalence and intensity of Salmincola californiensis infection of juvenile Chinook salmon collected from Cougar Reservoir, Oregon during 2011 and 2012

From: Observational data on the effects of infection by the copepod Salmincola californiensis on the short- and long-term viability of juvenile Chinook salmon (Oncorhynchus tshawytscha) implanted with telemetry tags

Year Season Group Prevalence Intensity
N Percent N Branchial Cavity Body Total
Mean Min Max Mean Min Max Mean Min Max
2011 Spring Mortality 1 100.0
Release 19 78.9
Fall Reject 26 92.3 24 4.5 0 19 2.1 0 7 6.6 1 22
Mortality 12 91.7 11 2.2 0 6 0.8 0 3 3.0 1 7
Release 115 87.8 101 2.0 0 8 0.9 0 4 2.8 1 10
Subtotal   173 87.9 136 2.4 0 19 1.1 0 7 3.5 1 22
2012 Fall Reject 40 75.0 30 5.0 0 10 0.5 0 4 5.6 1 12
Mortality 3 100.0 3 1.3 1 2 0.3 0 1 1.7 1 3
Release 65 89.2 58 1.8 0 5 0.5 0 3 2.3 1 6
Subtotal   108 84.3 91 2.9 0 10 0.5 0 4 3.4 1 12
Total    281 86.5 227 2.6 0 19 0.8 0 7 3.4 1 22
  1. Group indicates fish disposition (Reject, rejected from tagging; Mortality, tagged but died before release; Release, tagged and released). No fish were rejected from tagging during spring 2011. Dash (–) indicates no data collected.