2010 trip by trip results

For each of the four trips in 2010 two tables are shown; the first provides a summary of fish examined in the laboratories, while the second details the levels of lice observed on these fish.


Results from Trip 1: 29th March - 5th April, 2010

Number examined Average length
(mm)
Average weight
(g)
Pink salmon 835 33.5 0.31
Chum salmon 296 40.1 0.56

Prevalence
[95% CI]
Intensity
[range]
Abundance
Pink L. salmonis 3.4% [2.1 - 4.6] 1.1 [1-2] 0.04
C. clemensi 5.3% [3.8 - 6.8] 1.1 [1-2] 0.06
Chum L. salmonis 9.1% [5.8 - 12.4] 1.0 0.09
C. clemensi 10.5% [7.0 - 13.0] 1.3 [1-3] 0.14

Results from Trip 2: 27th April - 3rd May, 2010

Number examined Average length
(mm)
Average weight
(g)
Pink salmon 1143 38.2 0.53
Chum salmon 461 44.1 0.87

Prevalence
[95% CI]
Intensity
[range]
Abundance
Pink L. salmonis 14.0% [12.0 - 16.0] 1.2 [1-4] 0.16
C. clemensi 12.3% [10.4 - 14.2] 1.1 [1-3] 0.14
Chum L. salmonis 16.3% [12.9 - 19.6] 1.3 [1-4] 0.21
C. clemensi 13.2% [10.1 - 16.3] 1.2 [1-3] 0.16

Results from Trip 3: 25th May - 1st June, 2010

Number examined Average length
(mm)
Average weight
(g)
Pink salmon 1528 56.0 1.80
Chum salmon 489 57.3 2.19

Prevalence
[95% CI]
Intensity
[range]
Abundance
Pink L. salmonis 15.1% [13.3 - 16.9] 1.2 [1-8] 0.18
C. clemensi 17.3% [15.4 - 19.2] 1.3 [1-5] 0.23
Chum L. salmonis 20.3% [16.7 - 23.8] 1.2 [1-3] 0.25
C. clemensi 27.2% [23.3 - 31.1] 1.5 [1-6] 0.41

Results from Trip 4: 21st June - 26th June, 2010

Number examined Average length
(mm)
Average weight
(g)
Pink salmon 1087 67.9 3.13
Chum salmon 139 70.2 4.24

Prevalence
[95% CI]
Intensity
[range]
Abundance
Pink L. salmonis 14.3% [12.2 - 16.3] 1.3 [1-6] 0.19
C. clemensi 14.0% [11.9 - 16.1] 1.1 [1-3] 0.16
Chum L. salmonis 24.5% [17.3 - 31.6] 1.6 [1-4] 0.39
C. clemensi 11.5% [6.2 - 16.8] 1.4 [1-3] 0.16

The summaries provided above follow a format used by DFO in a previous project to allow for comparison. Details of that project together with trip summaries from 2005-09 can be found here.

If you are unfamiliar with any of the terms used in these tables (e.g. "prevalence", "intensity", etc.) an explanation can be found in one of the frequently asked questions around the BAMP project.

photo by MHC

photo by MHC.