Site Details: Invertote Salmon Farm

6 Broom Place
IV51 9HL
Operator: Organic Sea Harvest Ltd
Water type: Seawater

Average female lice per fish

Source

Salmon Scotland mortality

Source

Cumulative mortality over full production cycle

Invertote Production cycle end date: Aug 2023
Total losses: 40.1 %

Source

Fish Health Inspectorate mortality

Date:
25/07/22-31/07/22
Mortality:
38,475
Mortality Rate:
4.25%
Reason given: Post AGD FW treatment
Post AGD FW treatment
Pen 9 are the smallest & worst affected population on the farm
Mortality rate for whole site (excluding pen 9) was below reporting threshold during reported week. FHI to monitor mortality levels post treatment.
Date:
02/01/23-08/01/23
Mortality:
9,278
Mortality Rate:
1.55%
Reason given: Primarily seal attacks (physical damage), some AGD/gill health related (secondary to stress from seals)
Primarily seal attacks (physical damage), some AGD/gill health related (secondary to stress from seals)
Business correspondent contacted. Site stocked with two separate year classes: 2022 S1 at 1.2kg and 2021 S0 3.9kg. Average of the year classes is given for weight on site. Notification of mortality following observation of seal in pens. Bad weather suspected as reason for seal to enter pens through security panel above the water line due to abrasion of net on pen structure. Diver and ROV checks followed with no hole being discovered below surface. FHI to monitor.
Date:
06/03/23-12/03/23
Mortality:
6,174
Mortality Rate:
1.19%
Reason given: Post AGD Treatment/ AGD/Seals
Post AGD Treatment/ AGD/Seals
Post AGD Treatments PCR results are good. Seal interactions have not caused any escapes and will be reported in separate notification to follow. Of reported morts 2429 are attributed to seals.
FHI to monitor. Await potential escape notification form.
Date:
26/06/23-02/07/23
Mortality:
3,296
Mortality Rate:
2.65%
Reason given: Ongoing CMS confirmed by FVG
Ongoing CMS confirmed by FVG
Primarily CMS. Stock is now nearing final harvest - Fallow End of July
First report over theshold for CMS. Site to be harvested out by end of July. FHI to monitor.
Date:
03/07/23-09/07/23
Mortality:
6,668
Mortality Rate:
6.01%
Reason given: Ongoing CMS confirmed by FVG
Ongoing CMS confirmed by FVG
Primarily CMS. Stock is now nearing final harvest - Fallow End of July
FHI to monitor.
Date:
10/07/23-16/07/23
Mortality:
12,757
Mortality Rate:
14.75%
Reason given: Ongoing CMS as confirmed by FVG
Ongoing CMS as confirmed by FVG
Primarily CMS. Stock is now nearing final harvest - Fallow End of July
Site is harvesting to fallow and planned to be fallow by 28/07/2023. FHI to monitor.
Date:
17/07/23-23/07/23
Mortality:
1,603
Mortality Rate:
2.28%
Reason given: Ongoing CMS as confirmed by FVG
Ongoing CMS as confirmed by FVG
Primarily CMS. Final harvest booked for 26/07/2023
Business contacted and confirmed the site is now fallow.
Date:
24/07/23-30/07/23
Mortality:
1,144
Mortality Rate:
2.80%
Reason given: Ongoing CMS as confirmed by FVG
Ongoing CMS as confirmed by FVG
Primarily CMS, Site fallow on 26/07/23
Site now fallow. No further action.
Date:
04/12/23-10/12/23
Mortality:
19,363
Mortality Rate:
3.47%
Reason given: AGD
AGD
Primarily AGD. Pen 7 receiving freshwater treatment 11/12/23. Pen 7 - AGD accounts for 94.5% (18,297) of total mortalities.
First report this cycle, FHI to monitor outcome of FW treatment
Date:
11/12/23-17/12/23
Mortality:
12,402
Mortality Rate:
2.32%
Reason given: AGD
AGD
Primarily AGD. All poulations have now received freshwater treatment.
Second report this cycle, mortality has decreased from previous week. FHI to monitor post treatment. (Reduced to 0.15% in week 51).
Date:
05/08/24-11/08/24
Mortality:
15,650
Mortality Rate:
1.42%
Reason given: Seals / Handling
Seals / Handling
2,052 Seals (0.19%)
First report over the threshold this calender year. FHI to monitor. Additional info received 23/8/24: Split by yearclass this would be 0.51% for 2023 S0s (>750g) and 0.91% for 2014 S1s (<750g) and would not have required to be reported.
Date:
12/08/24-18/08/24
Mortality:
7,035
Mortality Rate:
1.55%
Reason given: Seals
Seals
887 Seals (Pen 4)
Second consecutive week over the reporting threshold. FHI to monitor.
Date:
12/08/24-18/08/24
Mortality:
13,145
Mortality Rate:
2.10%
Reason given: Seals/ Handling
Seals/ Handling
10,731 Seals (Pen 2)
Second consecutive week over the reporting threshold. FHI to monitor.
Date:
19/08/24-25/08/24
Mortality:
4,845
Mortality Rate:
1.08%
Reason given: Seals
Seals
300 Seals (0.03%) (Pen 4)
Split by yearclass based on population average weight. Combined whole site 0.83%. FHI to monitor.
Date:
26/08/24-01/09/24
Mortality:
6,204
Mortality Rate:
1.40%
Reason given:
Pen 4 - 1,546 & Pen 10 - 1.976 (57% of Total)
Business contacted for further information. FHI inspection scheduled.
Date:
16/09/24-22/09/24
Mortality:
28,189
Mortality Rate:
2.75%
Reason given: Freshwater Treatments / Handling
Freshwater Treatments / Handling
S023 (1.05%)(Pen 8 - 0.76% of Total) & S124 (1.70%) Freshwater Treatments/Handling. S0 2023 stock and S1 2024 stock on site, report for whole site.
FHI visited 18/9/24 (2024-0372). Diagnostic sampled collected. Awaiting results.
Date:
23/09/24-29/09/24
Mortality:
64,316
Mortality Rate:
6.49%
Reason given: Freshwater Treatments / Handling
Freshwater Treatments / Handling
S023 (0.69% of total) & S123 (5.80% of total) - Freshwater Treatments/Handling (AGD) (wellboat delay/breakdown)
FHI visited 18/9/24 (2024-0372). Diagnostic sampled collected. Awaiting results.
Date:
30/09/24-06/10/24
Mortality:
19,802
Mortality Rate:
2.11%
Reason given: Freshwater Treatments / Handling
Freshwater Treatments / Handling
S023 (1.62% of total) & S123 (0.49% of total) - Freshwater Treatments/Handling (AGD) (wellboat delay/breakdown). S0 2023 stock and S1 2024 stock on site, report for whole site.
FHI visited 18/9/24 (2024-0372). Diagnostic sampled collected. Awaiting results.
Date:
07/10/24-13/10/24
Mortality:
52,476
Mortality Rate:
5.72%
Reason given: Freshwater Treatments(Delayed Wellboat) / Handling/Seals/Low level - Yersinia ruckeri (Yersiniosis)/CMS
Freshwater Treatments(Delayed Wellboat) / Handling/Seals/Low level - Yersinia ruckeri (Yersiniosis)/CMS
S023 (1.54% of total (AGD/CMS) & S123 (4.18% of total (0.56% - Seals (Pen 8)&(3.36% - Pen 2 (AGD)) - Freshwater Treatments/Handling (AGD) (wellboat delay/breakdown). S0 2023 stock and S1 2024 stock on site, report for whole site.
FHI visited 18/9/24 (2024-0372). Diagnostic samples collected. Awaiting results.
Date:
14/10/24-20/10/24
Mortality:
18,217
Mortality Rate:
2.11%
Reason given: Freshwater Treatments(Delayed Wellboat) / Handling/Seals/Low level - Yersinia ruckeri (Yersiniosis)/CMS
Freshwater Treatments(Delayed Wellboat) / Handling/Seals/Low level - Yersinia ruckeri (Yersiniosis)/CMS
S023 (0.20% of total (AGD/CMS) & S123 (1.91% of total (0.08% - Seals (Pen 8)&(1.83% - Pen 2 & 7 (AGD)) - Freshwater Treatments/Handling (AGD) (wellboat delay/breakdown)
Company contacted for further information. Equipment malfunction on the well boat caused a delay in treatment. Mortality has reduced since previous submission and continues to decline, although it is expected to be above 1% next week.
Date:
21/10/24-27/10/24
Mortality:
38,859
Mortality Rate:
4.45%
Reason given: Freshwater Treatments(Delayed Wellboat) / Handling/Seals/Low level - Yersinia ruckeri (Yersiniosis)/CMS
Freshwater Treatments(Delayed Wellboat) / Handling/Seals/Low level - Yersinia ruckeri (Yersiniosis)/CMS
S023 (2.06% of total (AGD/CMS) & S123 (2.39% of total (some seals (Pen 8) - Mainly Freshwater Treatments/Handling (AGD) (wellboat delay/breakdown). Harvesting Invertote to fallowing has commenced. S023 (3,500g) & S124 (1,374g).
FHI visited 18/9/24 (2024-0372). Diagnostic samples collected. Awaiting results.
Date:
28/10/24-03/11/24
Mortality:
32,040
Mortality Rate:
3.84%
Reason given: Freshwater Treatments / Handling/ Long String Jellyfish
Freshwater Treatments / Handling/ Long String Jellyfish
S023 (99.9% of total stock was exposed to string of pearls jellyfish (Apolemia uvaria), also known as the string jellyfish or barbed wire jellyfish.) & S123 (0.01% of total ). Harvesting Invertote to fallowing has re-commenced. Pens 5 (49.9%), 4 (42.9%) & 11(7.2%) of total mortality particularily affected. The challenge of last week has now passed and we have re-comenced harvesting and freshwater treating. We however remain vigilant.
FHI visited 18/9/24 (2024-0372). Diagnostic samples collected. Awaiting results. FHI to monitor.
Date:
04/11/24-10/11/24
Mortality:
17,555
Mortality Rate:
2.11%
Reason given: Freshwater Treatments / Handling/ Long String Jellyfish/(Delayed Wellboat)
Freshwater Treatments / Handling/ Long String Jellyfish/(Delayed Wellboat)
S023 (95.6% of total (stock was exposed to string of pearls jellyfish (Apolemia uvaria), also known as the string jellyfish or barbed wire jellyfish.) & S123 (0.16% of total ). Harvesting Invertote to fallowing has commenced. Pens 3 (58.4%), 9 (14.8%) & 12(17.2%) of total mortality particularily affected. The challenge of last 2 week has now passed but random levels of jellyfish are still evident and we have re-comenced harvesting and freshwater treating. We however remain vigilant.
FHI visited 18/9/24 (2024-0372). Diagnostic samples collected. Awaiting results. FHI to monitor.
Date:
11/11/24-17/11/24
Mortality:
11,528
Mortality Rate:
1.48%
Reason given: Freshwater Treatments / Handling/ Long String Jellyfish/(Delayed Wellboat)
Freshwater Treatments / Handling/ Long String Jellyfish/(Delayed Wellboat)
S023 (92.0% of total stock was exposed a second time to string of pearls jellyfish (Apolemia uvaria), also known as the string jellyfish or barbed wire jellyfish.) & S123 (8.0% of total ). Harvesting Invertote to fallowing has commenced. Pens 3 (26.8%), 4 (31.2%) & 10(33.8%) of total mortality particularily affected. The challenge of last 3 weeks has now passed again but random levels of jellyfish are still evident and we have re-comenced harvesting and freshwater treating. We however remain vigilant.
FHI visited 18/9/24 (2024-0372). Diagnostic samples collected. Awaiting results. FHI to monitor.
Date:
25/11/24-01/12/24
Mortality:
9,617
Mortality Rate:
1.37%
Reason given: Handling/ Long String Jellyfish/AGD
Handling/ Long String Jellyfish/AGD
S023 - 89.6% & S123 10.4% of total. Pens 3 (42.1.7%), 10 (45.2%), 7(5.4%) & 8(5.0%) of total mortality particularily affected. The challenge of last 5 weeks has now passed again but random levels of jellyfish are still evident but we however still remain vigilant.
FHI visited 18/9/24 (2024-0372). Diagnostic samples collected. Awaiting results. FHI to monitor.
Date:
02/12/24-08/12/24
Mortality:
35,867
Mortality Rate:
5.46%
Reason given: Handling/ Long String Jellyfish/AGD
Handling/ Long String Jellyfish/AGD
S023 - 40.2% & S123 - 59.8% of total mortality. Pens 2 (6.70%), 3 (7.81%), 5 (11.2%), 12 (13.80%) & 1 (5.58%), 6 (11.20%), 7 (35.20%- Pred ), 8 (3.34%), 9 (4.46%) of total mortality particularily affected. The challenge of last several weeks has now passed but random levels of barbed wire jellyfish are still evident but we remain vigilant. Harvesting of S023 farm has continued as planned as will AGD treatments of the S124 stock.
FHI visited 18/9/24 (2024-0372). Diagnostic samples collected. FHI to monitor.
Date:
30/12/24-05/01/25
Mortality:
9,700
Mortality Rate:
1.63%
Reason given: Seals/Weather/Handling/Post Long String Jellyfish/AGD
Seals/Weather/Handling/Post Long String Jellyfish/AGD
S023 - 88.5% & S124 -11.5% of total mortality - Pen 2 (51.5%), Pen 4 (2.10%), Pen 5 (10.3%), Pen 7 (7.40%), Pen 8 (4.10%) & Pen 10 (24.6% - Seal) - Very much less levels of barbed wire jellyfish being seen. Harvesting of S023 farm has continued as planned as will AGD treatments of the S124 stock in Q1 2025.
FHI visited 18/9/24 (2024-0372). Diagnostic samples collected. Two weeks of mortalities as poor weather the previous week did not allow mort removal. FHI to monitor

Source

Inspection reports

Case Number: 2020-0036


Download PSI carried out in response to notification from business of increased mortality in lumpfish.
Lumpsucker mortality: 10/07/20 - 16/07 - 822 (2.83%), 17/07-23/07 - 2198 (7.79%), 24/07-30/07 - 4063 (15.62%). Mortality for this week so far at 5573 (25.38%).
Vet attended site on 23/07/2020. Vet report stated mortality most likely attributed to increased stress due to high Caligus burden and secondary skin infections from opportunistic bacteria (Tenibaculum and Vibrio spp.)
AMX tarpaulin treatments carried out on all cages (30/07 - 03/08) with lice reduction of 91% - 97% per cage recorded.
Salmon mortality has increased this reporting week (from 31/07) with losses so far of 11,091 (3.6%) attributed to post- treatment mortality. A mortality report is to be submitted to the FHI at the end of this week when the reporting week is complete.
Average Caligus levels before treatment reported as 65 (lumpfish) and 45 (salmon). Following treatment numbers fell to 4
(lumpfish) and 3.6 (salmon).
Average adult female sea lice (Lepeophtheirus salmonis) numbers have been consistently around 0.1.
Wrasse caught from Skye area. Lumpfish stocked from Anglesey (Ocean Matters)
Salmon stocked from Inverkerry (FS1061) and Girlsta (FS0504)
Neighbouring site Culnacnoc Salmon Farm (FS1344) to be stocked with S0's. Risk assessment for non-synchronous production in place, inspected during authorisation process.
Discharge consents in place for tarpaulin treatments. Site intends to only treat with Alphamax. [Original PDF]

Case Number: 2020-0465


Download Inspection of records carried out remotely on 29/10/2020
Caligus levels increased during July and August, resulting in increased mortality of fish, Alphamax treatments carried out reduced caligus levels significantly (91% - 97% per cage) and mortality fell as a result.
Recent mortality levels in lumpfish have been low (0.05% - 0.1%). Increased lumpfish mortality occurred during July and
August from 8% up to 25% during w/b 03/08. Mortality attributed to caligus damage and secondary bacterial infection. FHI were notified of this increase at the time. Lumpfish treated with Alphamx alongside the salmon, mortalities have subsequently fallen to low levels since September.
Wrasse mortality has been very low throughout the cycle.
Application in to MS-LOT and council for using A.D.D on site, as a contingency, seal presence around site is very low.
Site thermometer use as FHI thermometer had a battery failure.
Salmon deep in cages and difficult to observe, Lumpfish and wrasse seen near surface and appeared in good condition. [Original PDF]

Source