Site Details: Linga (Setterness)

Hamnavoe
Lunnaness
Vidlin
ZE2 9QF
Operator: Scottish Sea Farms Ltd
Water type: Seawater

Average female lice per fish

Source

Salmon Scotland mortality

Source

Cumulative mortality over full production cycle

South of Linga Production cycle end date: Nov 2018
Total losses: 23.2 %

South of Linga Production cycle end date: Sep 2020
Total losses: 23.3 %

South of Linga Production cycle end date: Nov 2022
Total losses: 11.3 %

South of Linga Production cycle end date: Oct 2024
Total losses: 20.4 %

Source

Fish Health Inspectorate mortality

Date:
05/09/22-11/09/22
Mortality:
7,342
Mortality Rate:
2.20%
Reason given: Virus disease; Predation by seals
Virus disease; Predation by seals
CMS; destocking through harvest
1st report this cycle. FHI to monitor
Date:
12/09/22-18/09/22
Mortality:
6,751
Mortality Rate:
2.00%
Reason given: Virus disease; Predation by seals
Virus disease; Predation by seals
CMS; destocking through harvest
Harvesting, FHI to monitor
Date:
19/09/22-25/09/22
Mortality:
4,517
Mortality Rate:
2.00%
Reason given: Virus disease; Predation by seals
Virus disease; Predation by seals
CMS; destocking through harvest
Harvesting - FHI to monitor.
Date:
26/09/22-02/10/22
Mortality:
4,144
Mortality Rate:
2.10%
Reason given: Virus disease; Predation by seals
Virus disease; Predation by seals
CMS; destocking through harvest
Harvest delayed due to prioritisation of Nevis sites. Fallow by end of week 43. FHI to monitor.
Date:
02/10/22-09/10/22
Mortality:
3,066
Mortality Rate:
2.30%
Reason given: Virus disease; Predation by seals
Virus disease; Predation by seals
CMS; destocking through harvest
Site to fallow by the end of October.
Date:
10/10/22-16/10/22
Mortality:
1,454
Mortality Rate:
1.10%
Reason given: Virus disease
Virus disease
CMS; destocking through harvest
Mortalities have reduced from last report. Due to be fallow wk 45. FHI to monitor
Date:
17/10/22-23/10/22
Mortality:
3,235
Mortality Rate:
2.50%
Reason given: Virus disease
Virus disease
CMS; harvesting to fallow
Mortalities have increased from last report. Due to be fallow wk 45. FHI to monitor
Date:
24/10/22-30/10/22
Mortality:
2,671
Mortality Rate:
2.20%
Reason given: Virus disease
Virus disease
CMS; harvesting to fallow
Due to fallow 15/11/2022
Date:
31/10/22-06/11/22
Mortality:
2,397
Mortality Rate:
2.40%
Reason given: Virus disease
Virus disease
CMS; Harvesting to fallow in wk 45
Site now fallow. No further action.
Date:
02/09/24-08/09/24
Mortality:
4,350
Mortality Rate:
1.4%
Reason given: Viral disease
Viral disease
CMS; Destocking through harvest. Business contacted: expected to be fallow by 17th November, subject to change.
Business contacted for additional information. FHI to monitor.
Date:
09/09/24-15/09/24
Mortality:
5,132
Mortality Rate:
1.80%
Reason given: Viral disease
Viral disease
CMS; Destocking through harvest
Business contacted for additional information. FHI to monitor. Update 19/9 from business; working to fallow all Setter sites within next 7 weeks, so by end of 10th Nov at latest.
Date:
16/09/24-22/09/24
Mortality:
5,507
Mortality Rate:
2.2%
Reason given: Viral disease
Viral disease
CMS; Destocking through harvest. Business previously contacted, site currently expected to fallow mid-November.
FHI to monitor.
Date:
23/09/24-29/09/24
Mortality:
2,466
Mortality Rate:
1.4%
Reason given: Viral disease
Viral disease
CMS; Destocking through harvest. Business previously contacted, site currently expected to fallow mid-November.
FHI to monitor.
Date:
30/09/24-06/10/24
Mortality:
2,289
Mortality Rate:
1.5%
Reason given: Viral disease
Viral disease
CMS; Destocking through harvest. Business previously contacted, site currently expected to fallow mid-November.
FHI to monitor.
Date:
31/03/25-06/04/25
Mortality:
13,596
Mortality Rate:
2.60%
Reason given: Transfer related
Transfer related
Post input secondary bacterial disease (Tenacibaculum spp)
Business contacted for additional infromation. FHI to monitor.

Source

Inspection reports

Case Number: 2021-0147


Download Ownership of site about to change so uncertain regarding next input date.
One incident where seal entered cage through damage in top net. The seal was released by the staff on site, as nets on site are seal pros and it would have been highly improbable for it to find its own way out. Divers were out on the same day and no holes were discovered. Top nets are sewn on to the handrails. Application for temporary ADD submitted - denied by local council due to farm being in protected area. The company does not identify this incident as a potential breach in containment otherwise it would have been reported to the FHI.
No mention on FMS that the area is stocked with a single year class but stated in VHWP.
Remote inspection on 13/07/21 done by observed by .
Physical inspection and VMD sampling carried out by observed by .
Fish looked healthy and behaving normally, no dead fish noted and very few moribunds/lethargic fish noted.
The fish sampled for VMD appeared healthy, with no clinical signs observed. No sea lice observed. [Original PDF]

Case Number: 2023-0323


Download IPN detected recently in routine health monitoring samples, but no elevated mortalities and no clinical signs observed. Main cause of mortalities has been seal predation. Sinker tubes have been added to nets to help maintain tension. Hope to install predator nets for next cycle.
Mortalities removed daily by staff and monitor fish using cameras in cages. Divers on site monthly to conduct net checks.
SLICE treatments of current cycle in April (5-11th), May (16-22nd) and July (11-17th).
Plan to undertake treatment for AGD in August, but will decide after treating Setterness North if they will use hydrogen peroxide or freshwater.
Take daily water samples (Monday-Friday) to monitor plankton. Samples sent to lab in Lerwick.
Fish on site from Barcaldine and Loch Shin. Barcaldine fish were larger and more uniform in size on input. Number of failed smolts observed in cages stocked with fish from Loch Shin, but no moribunds.
Fish sampled for VMD appeared healthy.
Mortality and sea lice records completed remotely on 21/7/23, other paperwork and inspection completed on 25/7/23. [Original PDF]

Case Number: 2025-0244


Download An escape had occurred since last inspection and had been reported to the Fish Health Inspectorate. The escape
(MSe090424SAL1) occurred April 2024 due to hole in the net which was immediately fixed and divers inspected the pen. No fish escaped. There was an increased seal presence at the time of the escape. The predator control plan was reviewed following the escape and a predator secondary netting was installed on all net pen enclosures during transferring fish out of pens for well boat treatment.
Mortality, Sea lice, Treatment record and Sea lice strategy and FMS were inspected remotely on 02/07/2025. BMP, movement records (including waste transfer records) and health surveillance records were inspected remotely on 03/07/2025.
Whilst inspecting sealice records it was noted that in the previous cycle sealice counts were over the threshold and had been reported to the the FHI accurately. In the current cycle sealice counts have been below the threshold.
Wrasse are wild caught and are sourced locally to Shetland. Wrasse first input was week 25 (16/06/2025).Wrasse mortalities from the last 4 weeks - wk27 - 34 (increase of mortalities were attributed to poor weather), wk26- 7, wk25 - 1,
At the time of inspection sea lice counts were observed. Sea counts are reflective of what has been reported and were found to be satisfactory.
Fish were observed on site and via feed cameras, they were shoaling and swimming well deep in the water column. The fish had a good feed and stimuli response. Some fish were observed to have abrasions/ lesions but were healing well, Site stated that the lesions were attributed to physical damage. 1 lethargic fish was removed at time of inspection. 1 fish with spinal deformity was observed across site. No gross pathology was observed so no samples were collected. It was observed that there were a high number of jellyfish (Species - comb and gooseberry jellyfish) across site.
4 fish were sampled for VMD and were observed to be in good condition externally and internally. [Original PDF]

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