Site Details: Linnhe

East Lodge
Ardgour
By Fort William
PH33 7AH
Operator: Mowi Scotland Ltd
Water type: Seawater

Average female lice per fish

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Salmon Scotland mortality

Source

Cumulative mortality over full production cycle

Linnhe Production cycle end date: Aug 2019
Total losses: 23.5 %

Linnhe Production cycle end date: Jun 2021
Total losses: 8.5 %

Linnhe Production cycle end date: Oct 2022
Total losses: 13.9 %

Linnhe Production cycle end date: Oct 2023
Total losses: 22.9 %

Source

Fish Health Inspectorate mortality

Date:
28/03/22-03/04/22
Mortality:
11,199
Mortality Rate:
1.14%
Reason given: Bacterial
Bacterial
FHI to monitor. Inspector due to be in Lochaber W/B 23/05/22.
Date:
04/04/22-10/04/22
Mortality:
14,423
Mortality Rate:
1.49%
Reason given: Bacterial
Bacterial
Fish vet been on site and stock just completed a 7 day antibiotic treatment. Mortality numbers have decreased from previous week.
FHI to follow-up week commencing 18/04/2022
Date:
11/04/22-17/04/22
Mortality:
10,882
Mortality Rate:
1.14%
Reason given: Bacterial
Bacterial
Business correspondent contacted. Tenacibaculum has been attributed to cause of mortalites on site. Worst affected pens have been treated with antibiotics (Florocol). Mortalities have slightly decreased from the previous week (WK14). FHI to monitor.
Date:
18/04/22-24/04/22
Mortality:
10,996
Mortality Rate:
1.16%
Reason given: Bacterial (Tenacibaculum)
Bacterial (Tenacibaculum)
On-going fourth consecutive week of mortality above the reporting threshold. Additional information collected last week see MRT0224. Inspector due to visit w/b 9 May. FHI to monitor.
Date:
25/04/22-01/05/22
Mortality:
10,493
Mortality Rate:
1.13%
Reason given: Bacterial (Tenacibaculum)
Bacterial (Tenacibaculum)
Tenacibaculum has been attributed to cause of mortalites on site. Worst affected pens have been treated with antibiotics (Florocol). FHI to visit wb 09/05/22.
Date:
12/06/23-18/06/23
Mortality:
34,660
Mortality Rate:
3.54%
Reason given: HSMI
HSMI
First report this cycle. Business contacted. Lice treatment recently carried out, fish didn't respond well. Antibiotic treatment also currently underway for secondary bacterial infection. Mortality numbres are dropping but may still be above reporting level wb 19/06. FHI to monitor.
Date:
19/06/23-25/06/23
Mortality:
28,394
Mortality Rate:
3.01%
Reason given: HSMI
HSMI
Business contacted: Antibiotic treatment for secondary bacterial infection has concluded. The bacterial load seems to have decreased. Fish also suffer with CMS and gill insult by jellyfish and plankton. HSMI is seen as main cause for mortality but issues are multi factorial.
Business contacted for additional information. FHI to monitor.
Date:
26/06/23-02/07/23
Mortality:
23,897
Mortality Rate:
1.54%
Reason given: HSMI
HSMI
HSMI and yersinnia ruckeri confirmed onsite. Antibiotic treatment conducted between 22nd June - 2nd July. Fish have responded well to treatment and mortality has significantly reduced.
FHI to monitor.
Date:
03/07/23-09/07/23
Mortality:
9,310
Mortality Rate:
1.04%
Reason given: HSMI
HSMI
HSMI and yersinnia ruckeri confirmed onsite. Antibiotic treatment conducted between 22nd June - 2nd July. Fish have responded well to treatment and mortality has significantly reduced.
Site contacted for further information, FHI to monitor.
Date:
31/07/23-06/08/23
Mortality:
15,648
Mortality Rate:
1.81%
Reason given: HSMI / Thermolicer mortality
HSMI / Thermolicer mortality
FHI to monitor
Date:
30/09/24-06/10/24
Mortality:
12,054
Mortality Rate:
1.52%
Reason given: Treatment loss (thermolicer)
Treatment loss (thermolicer)
Business contacted (info received 16/10/24): Only 2 pens treated with thermolicer, then stopped. FW treatment conducted. Also predation issues with seals.
First report for this cycle. FHI to monitor.
Date:
07/10/24-13/10/24
Mortality:
7,883
Mortality Rate:
1.01%
Reason given: Predator
Predator
Business contacted (info received 16/10/24): Only 2 pens treated with thermolicer, then stopped. FW treatment conducted. Also predation issues with seals.
FHI to monitor.
Date:
14/10/24-20/10/24
Mortality:
10,265
Mortality Rate:
1.49%
Reason given: Gill infections / bacterial
Gill infections / bacterial
FHI to monitor.
Date:
21/10/24-27/10/24
Mortality:
9,863
Mortality Rate:
1.45%
Reason given: Gill infections / bacterial
Gill infections / bacterial
Business contacted for additional information: continuning issues with seal predation on site, some cyanobacteria detected.
Business contacted for additional information. FHI to monitor.
Date:
04/11/24-10/11/24
Mortality:
11,856
Mortality Rate:
1.78%
Reason given: Bacterial
Bacterial
FHI visited 6/11/24 (2024-0430). Diagnostic samples collected. Awaiting results.
Date:
11/11/24-17/11/24
Mortality:
16,880
Mortality Rate:
2.59%
Reason given: Bacterial/treatment loss
Bacterial/treatment loss
FHI visited 6/11/24 (2024-0430). Diagnostic samples collected. Awaiting results.
Date:
18/11/24-24/11/24
Mortality:
11,658
Mortality Rate:
2.00%
Reason given: Bacterial
Bacterial
FHI visited 6/11/24 (2024-0430). Diagnostic samples collected. Awaiting results.

Source

Inspection reports

Case Number: 2020-0475


Download Site has had a very good cycle so far with very low mortality and low sea lice numbers. One mechanical treatment was carried out and one slice treatment has been carried out to deal with a spike in Caligus numbers in the summer months.
Site has had 7 movements on of Ballan Wrasse from Ireland from 1 supplier. [Original PDF]

Case Number: 2021-0059


Download Paperwork completed remotely on 22/04/2021 by , shadowed by
Physical site inspection on 28/04/2021 by
Next cycle plan to get 120m circles.
2021 wk6 AF 0.72, 2021 wk7 0.52 treatment in 2021 wk7, below CoGP in wk8, 2021 wk09 0.55 AF, wk9 treatment for 6 out of
12 cages on site, following week below CoGP levels, 2021 wk15 0.55 AF, following week below CoGP, harvests planned for the next few weeks, will target cages with highest lice counts for harvest first. Just recently also an increase in water temperature which means WRS are working better.
Most pens had a small number of fish with physical damage this appeared to be predominantly damage to the eyes. Most affected fish were deeper in the water, still actively swimming or too far away to be removed. Two lethargic fish were able to be removed which had both eyes missing. These fish appeared to be in good condition apart from the missing eyes. They were opened up but no gross pathology was observed so no samples collected. The site manager suspected the damage was related to recent mechanical treatments. Fish sampled for VMD appeared healthy. [Original PDF]

Case Number: 2022-0051


Download WRA wild and farmed from Anglesey
No mortality uplift this cycle.
The site can get a high freshwater influx during spate spells, salinity can drop to 18ppt in the first 3m. This does not seem to affect the cleanerfish as they can sit lower in the water column until the salinity condition improves.
Remote inspection done on 11/03/2022 by , observed by .
Site inspection not possible due to Covid-19. [Original PDF]

Case Number: 2022-0146


Download Remote paperwork completed 04/05/22.
WRS some wild caught from N. Ireland, some farmed.
Fallow possibly Sep 22 (if current stock moved to Muck or Rum) or July 2023.
Treatment imported from Chile: Veterian (Florfenicol)
Lethargic and moribund fish observed in pen 8-10. Site staff actively remove lethargic and moribund fish on a daily basis from these pens. Fish removed for diagnostic from pen 8 and 9. Lethargic fish also observed in some of the other pens, particularly pen5 and 7. Approximately 10-15 lethargic fish observed in pen 5 and 7 each. Two fish removed for diagnostic removed from pen 5. Overall majority of fish in pens 1-7 appeared to be shoaling normally. Fish a little deeper in the water and at times with the light conditions difficult to observe. At the time of inspection strong tidal currants were observed on site. [Original PDF]

Case Number: 2024-0430


Download Inspection lead by , observed by .
Inspection scheduled due to the business reporting high mortality events attributed to gill infections/bacterial, predator and post treatment loss. Due to the fading light conditions onsite only 4/10 pens were inspected. Stock is from Glenfinnan (FS0742) and
Loch Ness (FS0434, pen 8 and 9 only). Company vet present during inspection.
A slice treatment ended on 15/08/2024 where all pens were treated. Thermolicer treatment started 02/10/24 (only 2 pens treated) but was stopped due to increased post treatment mortality being observed. Piscirickettsia salmonis (SRS) hadn't been seen clinically in the stock at this stage. Changed to FLS treatment which started on 10/10/24 with all 10 pens being treated.
The site has been experiencing low oxygen levels (~ 70 %) so aeration is on in all pens. Increased seal predation has been noted and nets were changed for anti-predator nets week beginning 21/10/2024. The foover system is currently onsite assisting with mortality removal and a mortality uplift system will be fitted in the coming weeks.
In house health report for October detailed low oxygen levels, CGD and sea lice as issues onsite. Third party health report from 27/9/2024 identified SRS in cardiac and renal tissue, CGD 1/5 and HSMI 1/5.
The plan is to harvest pen 4 next week (w/c 11/11/2024) and pen 7 will be passive graded and harvested before being split down. A FLS treatment is then scheduled to start 18/11/2024 to treat all remaining stock. Antibiotic treatment will then be considered if necessary.
Wrasse stocked onsite are a mixture of wild caught from Scotland and imported from Ireland (surveillance frequency reassessed). Approximately 4000/5000 were inputted to each pen from June. Mortality observed was < 20 per day, per pen which increased after the FLS treatment resulting in approximately 200 per pen currently being stocked; ~ 96 % mortality per pen since input. Wrasse welfare assessment record for 8/8/24 was available and scoring was 0.
Farmed lumpfish were stocked onsite. Approximately 10,000 were inputted to each pen December 2023. A third party health surveillance report on 26/06/2024 identified Pseudomonas anguilliseptica in samples. Mortality was observed over the summer and there is currently no lumpfish stocked onsite; 100 % mortality across the site since input. [Original PDF]

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