Average female lice per fish

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Salmon Scotland mortality

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Cumulative mortality over full production cycle

Production cycle end date: Oct 2018
Total losses: 16.3 %

Production cycle end date: Sep 2020
Total losses: 39.4 %

Production cycle end date: Aug 2022
Total losses: 7.5 %

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Inspection reports

Case Number: 2020-0342

Download Mortality information (last 4 weeks)
Week 33 - 102344 - 39.55%
Week 32 - 11582 - 2.12%
Week 31 - 5107 - 1.46%
Week 30 - 7464 - 1.82%
Week 49 (2019) - 13048 - 1.58%
Week 46 (2019) - 15895 - 1.76%
Sgian dbhu has been one of the worst affected sites in loch striven due to historic levels of PD and AGD levels, higher biomass may have exacerbated effects of environmental insult, site is also closest to the freshwater run off and therefore would have been the most exposed to suspended solids in the loch after the extreme recent downpour.
Dinoflagellate combined with solids in water after heavy rainfall resulted in environmental insult. Mortality is now back at normal levels and appetite are doing well.
Fish have been doing really well but have succumbed to an environmental insult caused by a multitude of factors in the loch.
Environmental event lasted only a few days and mortality levels are back to normal. Harvesting procedures have commenced and fallow is expected within the month. Environmental insult combined with historic PGD is thought to have been the main source of high mortality. [Original PDF]

Case Number: 2021-0245

Download Fished sampled for VMD looked in good condition. Fish were feeding very deep.
Water temperature was found to be above 14 degrees Celsius. So full ECI could not be completed. Case type changed to
REG [Original PDF]

Case Number: 2021-0451

Download Inspection conducted by , observed by .
The main population looked healthy, feeding deep in the water column. One dead fish and a small number of lethargic fish observed. One moribund seen in pen 8 and taken out for diagnostic sampling.
The site has been inspected on the 15/07/2021 but the water temperature was found to be above 14 degrees Celsius. So full
ECI could not be completed. Case type changed to REG, CNI, SLI. Biosecurity, containment and sea lice records were found to be adequately maintained and therefore they have not been inspected again. [Original PDF]

Case Number: 2023-0460

Download Salmon came march this year, wrasse in June
Stock on site have come from - Applecross, Kinlochmoidart, Harris Lochs, Hebridean Smolt (Clachen Hatchery) and
Couldoran - Most stock are native Hebridian.
Wrasse mortalities - Wk38 - 2.48% (1,321), Wk37 - 2.92% (1,600), Wk36 - 2.98% (1,470), Wk35 - 2.88% (1,250). Wrasse mortality attributed to environmental reasons - jellyfish, possible pollution from forestry upstream (wrasse don't like suspended solids in the water).
Freshwater treatments last week and the rest of the site is being treated tonight.
Latest health report - systemic bacterial infection. Furunculosis, suspected Tenacibaculum sp., mixed gill infections with AGD,
Branchiomonas-like epitheliocysts and lamellar pathology suspicious of infection with Desmozoon lepeophtherii. Waterborne environmental damage to gills - possibly jellyfish or stinging cell contact.
Health team including head vet are on site today to collect samples for general health screening.
Sealice - SLICE was a precautionary measure.
During physical inspection of the site, 4 out of 16 pens had a couple of mortalities observed on the surface of the water. No moribund fish were observed on site. A handful of lethargic fish were observed across the whole site but when approached all fish swam off quickly. Water visibility on site was poor due to the large volume of freshwater input from the recent wet weather.
Fish that were observed were shoaling a few feet below the water surface.
Fish for VMD samples were collected from pens 1, 4 and 10. Fish sampled for VMD appeared healthy both externally and internally with no lice observed on any fish collected. [Original PDF]

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