Site Details: Scalpay

Caol Mhor, Maol Ban
Sconser
IV48 8TD
Operator: Mowi Scotland Ltd
Water type: Seawater

Average female lice per fish

Source

Salmon Scotland mortality

Source

Cumulative mortality over full production cycle

Production cycle end date: Jul 2021
Total losses: 9.8 %

Production cycle end date: May 2023
Total losses: 13.8 %

Production cycle end date: Jan 2024
Total losses: 16.8 %

Source

Fish Health Inspectorate mortality

Date:
24/10/22-30/10/22
Mortality:
13,742
Mortality Rate:
1.01%
Reason given: Treatment mortality (FW in wellboat)
Treatment mortality (FW in wellboat)
Mortalities returned below threshold in week 44.
Date:
21/08/23-27/08/23
Mortality:
7,609
Mortality Rate:
1.13%
Reason given: Jellyfish
Jellyfish
Gill issues the problem. Depending on availability FW may be used next week but a peroxide treatment for AGD may be administered if FW not available. FHI to monitor.
Date:
04/09/23-10/09/23
Mortality:
6,723
Mortality Rate:
1.02%
Reason given: Jellyfish
Jellyfish
Decrease in mortalities with week previous below threshold.
FHI to monitor.
Date:
11/09/23-17/09/23
Mortality:
10,738
Mortality Rate:
1.64%
Reason given: Jellyfish
Jellyfish
Gill health is the underlying cause excacerbated by microjellies. FHI to monitor.
Date:
18/09/23-24/09/23
Mortality:
6,806
Mortality Rate:
1.06%
Reason given: Gill infections
Gill infections
Mortality numbers have fallen since notification in following week. Gill infections have been exacerbated by micro-jellyfish. FHI to monitor
Date:
30/10/23-05/11/23
Mortality:
5,299
Mortality Rate:
1.00%
Reason given: Jellyfish
Jellyfish
Higher mortality due to missing several days last week due to bad easterly weather. Daily mortality levels approx 0.1%. Site continues to harvest.
FHI to monitor
Date:
06/11/23-12/11/23
Mortality:
6,354
Mortality Rate:
1.23%
Reason given: Jellyfish
Jellyfish
Higher mortality due to missing several days last week due to bad easterly weather. Daily mortality levels approx 0.1%. Site continues to harvest.
Health, Welfare and Biology director for Mowi contacted. Site planned to fallow before the end of the year and mortality rate has reportedly dropped since last notification. FHI to monitor
Date:
13/11/23-19/11/23
Mortality:
7,494
Mortality Rate:
1.51%
Reason given: PGD/Anemia
PGD/Anemia
Site planned to fallow before the end of the year

Source

Inspection reports

Case Number: 2021-0055


Download Paperwork conducted remotely 13/05/21 by , observed by . Site inspection by , shadowed by . VMD sampling by
Site is very exposed, especially from northerly. A lot of movement reportedly goes through the site.
2 fish sampled for VMD, both appeared healthy, site is due to undergo freshwater treatments as sea lice numbers have increased. Site has been harvesting, with the pens worst affected by CMS being targeted) and were thinning down cages during the site inspection using the Inter Caledonia.
Site manager reported that the seal pro nets have been very effective mitigation measure against seal predation, with no seal damage noted on any fish (incl mortalities) since input.
Fish were sitting deeper in the water and visibility was poor at time of inspection.
10-15 mortalities observed across site at time of inspection, these were to be removed, a team was working round the pens, but there were multiple operations on-going including net washing.
One pen unable to inspect fully due to net washing operations and one pen where wellboat operations were on-going where the fish were being crowded to be split to an empty pen. [Original PDF]

Case Number: 2023-0042


Download One dead wrasse observed during inspection. One dead (not fresh dead) and one lethargic salmon observed across site.
Visibility during inspection was very variably due to winds gusting to force 7 or greater, due to deteriorating weather, last two cages were inspected from the boat. No issues observed or reported on site
Site is due to fallow mid May 2023 and restock with growers from Loch Erisort sites in mid June 2023, these will be harvested out by November 2023 to allow site to fallow before restocking in 2024. Next smolt input 2024 Q1 (planned for Feb 2024)
Due to weather conditions experienced on site, Scalpay is treated as a high energy offshore site, with site staff receiving a higher level of boat training.
Split of fish moved to Rum and further movements to Rum are planned for near future. [Original PDF]

Source