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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.