Sea Lice Mitigation Events at British Columbia Salmon Farms

Fisheries and Oceans Canada provides a summary of reported sea lice mitigation events at salmon farms in British Columbia. The dataset documents actions taken to reduce sea lice abundance below management thresholds, which changed from 3.0 to 2.8 and then to 2.4 motile lice per fish over time. It covers mandatory mitigation events triggered during the juvenile wild salmon out-migration window from March to June.

Use Cases

• Analyze the frequency and timing of mitigation events relative to the March-June juvenile salmon out-migration window.
• Track changes in regulatory compliance by comparing reported mitigation events against the shifting management threshold (e.g., 3.0, 2.8, 2.4 lice per fish).
• Study the reported effectiveness of different mitigation types (e.g., in-feed treatments, baths, mechanical removal) to monitor potential treatment resistance.
• Correlate mitigation event data with sea lice count datasets to assess the impact of actions on lice abundance levels.

Strengths

• Data is sourced from the authoritative regulatory body, Fisheries and Oceans Canada.
• Includes specific regulatory thresholds (2.4, 2.8, 3.0 motile lice per fish) and compliance timelines (28 or 42 days).
• Covers a defined high-risk biological period (the juvenile salmon out-migration window from March to June).

Limitations

• The dataset size, row count, and specific column schema are unknown, limiting preliminary assessment of analytical scope.
• Data may be limited to reported compliance events, potentially missing unreported or non-compliant activities.
• Temporal coverage and update frequency beyond the last update date are not specified.

Provenance

Source

Fisheries and Oceans Canada

Collection Method

Mandatory reports submitted by salmon farm licence holders to the regulator.

Time Range

null

Freshness

Last updated on March 12, -2026.

Geography

Salmon farms in British Columbia, Canada.