Average female lice per fish

Source

Salmon Scotland mortality

Source

Cumulative mortality over full production cycle

Olna South Production cycle end date: Nov 2019
Total losses: 20.7 %

Olna South Production cycle end date: Nov 2021
Total losses: 9.9 %

Olna South Production cycle end date: Mar 2024
Total losses: 13.6 %

Source

Inspection reports

Case Number: 2021-0251

Download No recent issues reported on site, no dead or moribund observed during the inspection. Two fish removed for VMD sampling appeared in very good condition with very few sea lice observed and no adult females.
Only 5 cages stocked as fewer fish delivered than expected, however, it was also reported that the fish delivered were a very uniformed size and are growing well.
Feeding controlled centrally from Lerwick.
Very good visibility and very calm weather.
SLICE treatment planned to begin next week. Only SLICE used this cycle. [Original PDF]

Case Number: 2025-0074

Download Recent health surveillance (10/02/2025) conducted by business showed site had been experiencing winter sores (moritella) with elevated mortality, however lesions had been healing well. Health surveillance on 13/03/2025 2 out of 10 fish tested positive for AGD at moderate levels.
The general population were observed at site and on feeding cameras to be shoaling well and were in good condition and had a good feed response. Stock were swimming deep in the water column. Low number of fish were observed to have lesions but were healing well. There were low number of fish that were lethargic across site, but responded to stimuli. 37 lethargic/ moribund fish across the site were dispatched at time of inspection, although 7 were dispatched at cage 4 and 9 at cage 8.
4 fish was sampled for VMD and was in good condition externally and internally
Inspection of site and site records was conducted on 20/03/2025 by whilst supervised by . VMD was sampled by
whilst supervised by . [Original PDF]

Source