Table 5 Descriptive summaries of key continuous variables in these datasets (NA = missing value).

From: Sea lice infestation dataset for wild and farmed salmon populations on the Pacific coast of Canada (2001–2023)

Field

Dataset

N

NA

Min

Max

Mean

Median

length (mm)

all_wild_fish_lice

368,150

2.3%

3

553

53.3

47.0

weight (g)

all_wild_fish_lice

229,000

39.2%

0.1

1100

3.0

0.96

height (mm)

all_wild_fish_lice

127,844

66.1%

1

39

8.5

7.9

Any_louse *

all_wild_fish_lice

376,764

—

0

384

0.90

0

chalimus_ab

industry_farm_abundance

10,159

1.6%**

0

46.4

0.96

0.17

lep_motile_ab

industry_farm_abundance

10,159

1.6%**

0

53.4

1.63

0.57

lep_af_ab

industry_farm_abundance

10,159

1.6%**

0

27.8

0.77

0.21

cal_motile_ab

industry_farm_abundance

10,159

1.6%**

0

41.5

0.41

0.06

  1. *All twelve fields relating to the various sea lice species and stages were summed into a single value, to provide a total for any louse that was observed on a wild fish. This distribution is highly skewed; indeed only 28% of all the wild fish observed were found to have any sea louse infestation, with around 1% of the fish observed having over 10 sea lice.
  2. **All 10,159 rows include farm abundance estimates for the various sea lice stages. However, for 162 entries the ‘weight’ feature could not be estimated due to missing farm inventory data. As such these rows (1.6% of total) cannot be included in any calculations used to estimate weighted values.
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