Site Details: Torridon

Torridon Fish Farm
Shieldaig
IV54 8XN
Operator: Mowi Scotland Ltd
Water type: Seawater

Videos

Average female lice per fish

Source

Salmon Scotland mortality

Source

Cumulative mortality over full production cycle

Torridon Production cycle end date: May 2019
Total losses: 16.7 %

Torridon Production cycle end date: Feb 2021
Total losses: 26.4 %

Torridon Production cycle end date: Jul 2023
Total losses: 25.3 %

Torridon Production cycle end date: Oct 2024
Total losses: 30.1 %

Source

Fish Health Inspectorate mortality

Date:
17/10/22-23/10/22
Mortality:
5,850
Mortality Rate:
1.34%
Reason given: Gill infections / HSMI
Gill infections / HSMI
Historic event - NFA
Date:
24/10/22-30/10/22
Mortality:
5,028
Mortality Rate:
1.17%
Reason given: Gill infections / HSMI
Gill infections / HSMI
Mortalities returned below threshold in week 44.
Date:
14/11/22-20/11/22
Mortality:
4,102
Mortality Rate:
1.02%
Reason given: CMS / Gill infections
CMS / Gill infections
Mortality seems to be reducing in week 47. FHI to monitor.
Date:
21/11/22-27/11/22
Mortality:
3,425
Mortality Rate:
1.12%
Reason given: Gill Health Related
Gill Health Related
Gill infections
Mortality figures for wk48 indicate mortality is currently decreasing. FHI to monitor.
Date:
28/11/22-04/12/22
Mortality:
4,186
Mortality Rate:
1.65%
Reason given: CMS
CMS
Mortality figures for wk 49 indicate mortality is currently increasing. FHI to monitor.
Date:
05/12/22-11/12/22
Mortality:
10,473
Mortality Rate:
4.67%
Reason given: Treatment Loss - Thermolicer
Treatment Loss - Thermolicer
Mortalities below threshold in week 50. FHI to monitor.
Date:
26/12/22-01/01/23
Mortality:
2,027
Mortality Rate:
1.39%
Reason given: CMS
CMS
Site currently destocking though harvest. One cage was harvested last week. FHI to monitor.
Date:
02/01/23-08/01/23
Mortality:
1,952
Mortality Rate:
1.73%
Reason given: CMS
CMS
Business contacted, some fish on site (3 pens) are intended as broodstock and will be kept on site until March/April 2023. Some fish that are still intended to be harvested are also still on site and are intended to be harvest out over the next month or so. FHI planned visit w/b 27/2/23. FHI to monitor in the meantime.
Date:
09/01/23-15/01/23
Mortality:
1,372
Mortality Rate:
1.79%
Reason given: CMS
CMS
Business contacted, some fish on site (3 pens) are intended as broodstock and will be kept on site until March/April 2023. Some fish that are still intended to be harvested are also still on site and are intended to be harvest out over the next month or so. FHI planned visit w/b 27/2/23. FHI to monitor in the meantime.
Date:
16/01/23-22/01/23
Mortality:
1,506
Mortality Rate:
2.00%
Reason given: CMS
CMS
Site contacted for further information - CMS is currently the main cause of mortality. The site have started harvesting and only have two pens left, some fish are being held on as potential broodstock. FHI to visit w/b 27/02/2023.
Date:
23/01/23-29/01/23
Mortality:
743
Mortality Rate:
1.10%
Reason given: CMS
CMS
Site contacted for further information - CMS is currently the main cause of mortality. The site have started harvesting and only have two pens left, some fish are being held on as potential broodstock. FHI to visit w/b 27/02/2023.
Date:
30/01/23-05/02/23
Mortality:
777
Mortality Rate:
1.26%
Reason given: CMS
CMS
CMS is currently the main cause of mortality. The site have started harvesting and only have two pens left, some fish are being held on as potential broodstock. FHI visit planned.
Date:
13/03/23-19/03/23
Mortality:
495
Mortality Rate:
1.34%
Reason given: CMS / Thermolicer Treatment Mortality
CMS / Thermolicer Treatment Mortality
Spoke to business. CMS is main cause of mortality. 3 pens still stocked with broodstock. Mortalities reduced but below 1% w/b 20/03/2023.
Date:
15/05/23-21/05/23
Mortality:
2,374
Mortality Rate:
1.77%
Reason given: FW Treatment Wellboat
FW Treatment Wellboat
Called for further information - FW treatment conducted on fish during transport from Corry, 10 hr treatment. These morts occurred during transport. Although fish were inspected as well prior to transport is expected there were a number of poor-doers in consignment that had not been observed. Mortality rate reported to have improved following arrival on site, FHI to monitor.
Date:
26/06/23-02/07/23
Mortality:
1,167
Mortality Rate:
4.33%
Reason given: CMS
CMS
Site is now fallow, no further action required.
Date:
05/02/24-11/02/24
Mortality:
19,510
Mortality Rate:
1.66%
Reason given: HSMI / Gill infections
HSMI / Gill infections
First report for this cycle. FHI to monitor.
Date:
12/02/24-18/02/24
Mortality:
28,531
Mortality Rate:
2.47%
Reason given: Gill infections / Wellboat treatment (freshwater)
Gill infections / Wellboat treatment (freshwater)
Business contacted: Severe AGD outbreak, 1 cage trialed with peroxide with poor outcome. FW treatment was conducted instead. Crowding and handling caused losses. Treatments finishing this week (wk8).
Business contacted for additonal information. FHI to monitor.
Date:
19/02/24-25/02/24
Mortality:
23,255
Mortality Rate:
2.06%
Reason given: Gill infections / Wellboat treatment (freshwater)
Gill infections / Wellboat treatment (freshwater)
FHI to monitor.
Date:
18/03/24-24/03/24
Mortality:
14,107
Mortality Rate:
1.30%
Reason given: Gill infections
Gill infections
FHI to monitor.
Date:
09/09/24-15/09/24
Mortality:
10,607
Mortality Rate:
1.98%
Reason given: Anaemia / Treatment loss (FW in wellboat)
Anaemia / Treatment loss (FW in wellboat)
Business contacted (20/9/24): severe complex gill disease is causing the anaemia, some suggestion of water borne insult.
Business contacted for additional information. FHI to monitor.
Date:
16/09/24-22/09/24
Mortality:
9,276
Mortality Rate:
1.96%
Reason given: Anaemia / Treatment loss (FW in wellboat)
Anaemia / Treatment loss (FW in wellboat)
Business contacted: AGD, PGD, anemia in the gills and some indication of plankton issue. Further water sampling on-going. FW treatment completed for the site from 9/09 until 19/09/24.
Slight reduction to previous week. Business contacted for additional information. FHI to monitor.
Date:
23/09/24-29/09/24
Mortality:
8,710
Mortality Rate:
2.00%
Reason given: Anaemia / Gill infections
Anaemia / Gill infections
Visit scheduled. FHI to monitor.
Date:
30/09/24-06/10/24
Mortality:
5,022
Mortality Rate:
1.30%
Reason given: Gill infections / Anaemia / AGD treatments
Gill infections / Anaemia / AGD treatments
Visit planned. FHI to monitor.
Date:
07/10/24-13/10/24
Mortality:
5,993
Mortality Rate:
1.81%
Reason given: Gill infections / Anaemia
Gill infections / Anaemia
Site harvesting
FHI visited 9/10/24 (2024-0397). Diagnostic samples collected. Awaiting results.
Date:
14/10/24-20/10/24
Mortality:
12,655
Mortality Rate:
4.38%
Reason given: Anaemia / Gill infections
Anaemia / Gill infections
Site harvesting out
FHI visited 9/10/24 (2024-0397). Diagnostic samples collected. Awaiting results.
Date:
21/10/24-27/10/24
Mortality:
4,563
Mortality Rate:
3.03%
Reason given: Anaemia / Gill infections
Anaemia / Gill infections
Site fallow as of 24th October
Site now fallow.

Source

Inspection reports

Case Number: 2020-0098


Download No records of lumpfish offsite maintained as numbers are not known, the numbers are counted and recorded at Mallaig harvest station along with records of wild fish that have been transferred.
Lumpfish mortalities increased December 2018 (5168 no diagnosis), January 2019 (4031 No diagnosis), February 2019
(5332 atypical furunculosis) and March 2019 (5143 atypical furunculosis), April 2019 (5168,(no diagnosis) , florfenicol had been administered.
Lumpfish morts 544 last four weeks [Original PDF]

Case Number: 2020-0482


Download Elevated mortalities due to gill issues currently an issue. Mortalities related to gill issues began during week 35 with a marked increase in week 39.
Salmon mortalities week 39 4689 (0,54%), week 40 7448 (0.86%), week 41 14571 (1.69%), wk 42 5691 (0.84%), wk 43 32494
(4.86%), wk 44 (2.02%) 11109, wk 45 10074 (2.08%)
Additional mortality peak recorded in week 26 6906 (0.82%) and week 27 4287 (0.49%) attributed to post treatment losses, this also affected cleaner fish mortalities with 9947 and 5389 recorded.
Cleaner fish mortalities have been elevated also with 2324 recorded for the last four week in the wrasse being attributed to atypical furunculosis, lumpfish mortalities have been 5938 due to pseudomonas and handling.
Sea lice numbers have been above the CoGP recommended threshold for treatment since week 39 with a breech of the reporting threshold in week 45 (4.72) and week 42 (4.93)
Gill anaemia a significant problem. At the time of inspection two boats were conducting freshwater treatments. A number of lethargic fish were observed in the pens however these difficult to catch with a hand net but five fish were removed for further examination and diagnostic sampling.
Extremely poor weather condition made stock inspection difficult.
Due to ongoing issues on site a meeting with the manager could not be arranged as he just too busy therefore some records could not be inspected and some details not clarified. Sea lice and mortality data was provided prior to the inspection as well as stock details for the salmon however some information was not available.
Results of animal health surveillance discussed on site with company biologist. [Original PDF]

Case Number: 2020-0482


Download Elevated mortalities due to gill issues currently an issue. Mortalities related to gill issues began during week 35 with a marked increase in week 39.
Salmon mortalities week 39 4689 (0,54%), week 40 7448 (0.86%), week 41 14571 (1.69%), wk 42 5691 (0.84%), wk 43 32494
(4.86%), wk 44 (2.02%) 11109, wk 45 10074 (2.08%)
Additional mortality peak recorded in week 26 6906 (0.82%) and week 27 4287 (0.49%) attributed to post treatment losses, this also affected cleaner fish mortalities with 9947 and 5389 recorded.
Cleaner fish mortalities have been elevated also with 2324 recorded for the last four week in the wrasse being attributed to atypical furunculosis, lumpfish mortalities have been 5938 due to pseudomonas and handling.
Sea lice numbers have been above the CoGP recommended threshold for treatment since week 39 with a breech of the reporting threshold in week 45 (4.72) and week 42 (4.93)
Gill anaemia a significant problem. At the time of inspection two boats were conducting freshwater treatments. A number of lethargic fish were observed in the pens however these difficult to catch with a hand net but five fish were removed for further examination and diagnostic sampling.
Extremely poor weather condition made stock inspection difficult.
Due to ongoing issues on site a meeting with the manager could not be arranged as he just too busy therefore some records could not be inspected and some details not clarified. Sea lice and mortality data was provided prior to the inspection as well as stock details for the salmon however some information was not available.
Results of animal health surveillance discussed on site with company biologist. [Original PDF]

Case Number: 2022-0140


Download Additional peaks in mortality 2020 Wk 45 - 11,275 (2.08%) due to gill infections (10,074) and anaemia (1,201). 2020 Wk 46 -
17,884 (3.82%) due to gill infections (8,735) and FW treatment loss (9,149). Mortalities reduced significantly the following weeks.
Lumpfish mortalities - For April total mortality 2,595 (4.78%). Other peaks in mortality - Nov 2020 9,700 (8.38%) (7,692 transport losses), Dec 2020 5,165 (5.91%) (mainly without diagnosis), Jan 2021 4,522 (11.54%) (mainly without diagnosis, some handling sea lice mortality). Following discussion with the manager it was confirmed that the mortalities recorded without diagnosis should have been recoded as post treatment mortalities.
1 side swimmer and 1 mort observed. Not removed for sampling.
Paperwork (ECI,SLI,VMD) completed by , supervised by . CNA completed by , observed by . VMD completed by . Site inspected by and 11/05/2022. [Original PDF]

Case Number: 2023-0459


Download Salmon Peaks in mortalities 2022 wk 42 5850 (1.34%) gill health and HSMI. Wk 43 5028 (1.17%) gill health and HSMI, wk 48
4186 (1.65%) CMS, wk49 10473 CMS/thermolicer (4.67%), wk 52 1788 (1.23%) CMS.
Salmon Peaks in mortalities 2023 wk 1 1952 (1.73%) CMS, wk 2 1372 (1.79%) CMS, wk 3 1506 (2%)CMS/thermolicer, wk 20
2374 (1.77%) FW treatment handling, wk 26 1167 (1.19%) CMS.
Salmon morts for the last 4 weeks, wk 39 2490 (% not provided) wk 38 2648 (0.28%), wk 37 4580 (0.48%), wk 36 5844
(0.60%) all attributed to nephrocalcinosis.
Lumpfish input week 39, mortalities recorded as 255 due to transport losses.
Wrasse mortality for the last four weeks wk 39 1777 (3.08%), wk 38 1787 (3.01%), wk 37 1612 (3.03%), wk 36 750 (1.65%), no diagnosis.
Lumpfish peaks in mortality 2022 wk 21 4118 (8.30%)handling/ no diagnosis, wk 22 6312 (8.01%) Handling, wk 28 10831
(9.74%) transport losses, wk 29 14106 (14.05%) without diagnosis, wk 30 8104 (9.39%) without diagnosis, wk 31 8738
(11.17) without diagnosis/other infectious diseases.
Wrasse peaks in mortality 2022 wk 45 2806 (9.17%) without diagnosis, wk 46 2698 (9.71%)without diagnosis,, wk 47 2051
(8.17%)without diagnosis,, wk 48 3029 (13.15%)without diagnosis, wk 49 1789 (8.94%)without diagnosis, wk 50 1530
(8.40%)without diagnosis,, wk 51 1169 (7%)without diagnosis.
Mortalities are ensiled and if PH (3-3.4)is correct it goes to Scanbio in Inverness, if other PH goes to Energen.
Last cycle issues with gill health.
Some dead wrasse observed in 2 pens. 2 moribund salmon noted but away from edge of cage so not removed. Poor visibility due to weather conditions. [Original PDF]

Case Number: 2024-0397


Download Site visited due to prolonged mortality over threshold: Wk 37 - 1.98%, Wk 38 - 1.96%, Wk 39 - 2% and Wk 40 - 1.3% attributed to anaemia, FW treatment losses and gill issues.
Mortality is currently highest in pens 2, 4 and 7. In the last week (1-8th October) pen 2 had the highest mortality at 3.24%.
Currently this week mortality has been 0.48%. Per pen: 1 - 0.59%, 2 - 0.95%, 4 - 1.05%, 6 - 0.21%, 7 - 0.44%, 9 - 0.11%, 10 -
0.47%, 11 - 1.12% (harvested out yesterday), 12 - 0.25%. Pen 4 is being harvested out tomorrow.
Fish came onto site August 2023. Site has begun to harvest on the 06/05/24, most recent harvest was on the 08/10/24 and site is now harvesting to fallow in mid December (mostly deadhaul). Targeting harvest - keeping an eye on mortality levels each week.
Site also has both lumpfish and wrasse on site. A total of 70,665 wrasse have been input onto site since August 2023. Today there are 21,274 wrasse on site. Wrasse mortality has been attributed to freshwater treatments and environmental issues
(microjellies and plankton). In September 2023 the first batch of 63,089 lumpfish arrived on site and not long after lumpfish mortality started to rise. After testing by the company it was found that furunculosis was the cause (lumpfish were vaccinated but further testing revealed it was a different strain). Company believed the cause of the outbreak were the wrasse on site.
Medicated feed blocks were ordered in October but due to a delay the blocks didn't arrive on site until 15/11/2023 by which point 59,549 lumpfish had died. The next input of lumpfish was not until Feb 2024. Since Feb 2024, 60,000 lumpfish have been input onto site and as of today the site has 33,924 lumpfish. Lumpfish mortalities in 2024 have been attributed mainly to environmental conditions (microjellies and plankton) as well as freshwater treatments.
Gill issues on site from December 2023 until March 2024 which then began again at the end of August. Lots of microjellies in the water - counts ranging from 1000 to 2200 cells per millilitre in some samples taken daily on site during June/July. Most recent (7th October) had 100 cells/ml.
Treatments - Freshwater treatments were carried out in March, July and September 2024. September treatments carried out on 8th, 9th, 11th, 13th, 15th, 17th and 18th. Some days were weathered off. Averaging about 2 cages per day. Last year's treatments could grade out the lumpfish due to their small size however the most recent treatments have happened on a boat that can't grade out lumpfish.
Sealice - have been low in number.
Last health visit - 23/09/2024 but report hasn't been sent through yet.
Last health report - 27/08/2024 - "gill health decreased with a lot of gill bleeding, CGD present, only 1 or 2 moribund per pen, mortality (80%) attributed to anaemia, feed response good".
When inspecting site, only one moribund fish was observed in pen 2. This was caught and taken for diagnostic sampling. Gills of this fish were bleeding. Staff on site were carrying out lice counts and the majority of fish they caught also had bleeding gills but these fish all appeared healthy otherwise. [Original PDF]

Source