| Emamectin benzoate treatment: |
Any site-wide treatment episode where emamectin benzoate was the only sea lice medicine administered and all pens commenced treatment on the same day. |
| Effective treatment: |
Any emamectin benzoate treatment where the mean abundance of mobile L. salmonis fell below 40% of pre-treatment levels in the 12 weeks following treatment. Note: All treatments that were applied before guideline treatment-trigger lice levels had been reached were classified as effective. |
| Loch-wide treatment: |
All stocked farms (owned by the industrial partner) within a loch system were treated for sea lice within two weeks of each other. The sea lice medicine used at the other sites in the loch system was not necessarily emamectin benzoate. |
| Effective loch-wide treatment: |
Any effective treatment that was administered as part of a loch-wide intervention. The sea lice medicine used at the other sites in the loch system was not necessarily emamectin benzoate. The treatment episodes at the other sites in the loch system were not necessarily effective. |
| Treatment-trigger guidelines: |
Mean abundance of L. salmonis adult females has reached 0.5 (February to June), or 1.0 (July to January). |
