Site Details: Linga (Setterness)
Lerwick
ZE1 0PX
Water type: Seawater
Cumulative mortality over full production cycle
Production cycle end date: Nov 2018
Total losses: 23.2 %
Production cycle end date: Sep 2020
Total losses: 23.3 %
Production cycle end date: Nov 2022
Total losses: 11.3 %
Fish Health Inspectorate mortality
05/09/22-11/09/22
7,342
2.20%
12/09/22-18/09/22
6,751
2.00%
19/09/22-25/09/22
4,517
2.00%
26/09/22-02/10/22
4,144
2.10%
02/10/22-09/10/22
3,066
2.30%
10/10/22-16/10/22
1,454
1.10%
17/10/22-23/10/22
3,235
2.50%
24/10/22-30/10/22
2,671
2.20%
31/10/22-06/11/22
2,397
2.40%
Inspection reports
Case Number: 2021-0147
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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
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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]