Site Details: Invertote Salmon Farm
IV51 9HL
Water type: Seawater
Cumulative mortality over full production cycle
Production cycle end date: Aug 2023
Total losses: 40.1 %
Fish Health Inspectorate mortality
25/07/22-31/07/22
38,475
4.25%
02/01/23-08/01/23
9,278
1.55%
06/03/23-12/03/23
6,174
1.19%
26/06/23-02/07/23
3,296
2.65%
03/07/23-09/07/23
6,668
6.01%
10/07/23-16/07/23
12,757
14.75%
17/07/23-23/07/23
1,603
2.28%
24/07/23-30/07/23
1,144
2.80%
04/12/23-10/12/23
19,363
3.47%
11/12/23-17/12/23
12,402
2.32%
05/08/24-11/08/24
15,650
1.42%
12/08/24-18/08/24
7,035
1.55%
12/08/24-18/08/24
13,145
2.10%
19/08/24-25/08/24
4,845
1.08%
26/08/24-01/09/24
6,204
1.40%
Inspection reports
Case Number: 2020-0036
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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
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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]