Site Details: East Tarbert Bay
Argyll
Argyll
PA41 7AA
Water type: Seawater
Cumulative mortality over full production cycle
Production cycle end date: Jan 2018
Total losses: 14.7 %
Production cycle end date: Dec 2019
Total losses: 16.4 %
Production cycle end date: Jan 2021
Total losses: 11.7 %
Production cycle end date: Jan 2022
Total losses: 80.2 %
Fish Health Inspectorate mortality
18/07/22-24/07/22
31,307
2.25%
25/07/22-31/07/22
105,355
7.73%
01/08/22-07/08/22
102,008
8.12%
08/08/22-14/08/22
31,839
2.76%
05/09/22-11/09/22
16,355
3.41%
12/09/22-18/09/22
65,182
9.93%
19/09/22-25/09/22
7,307
1.21%
26/09/22-02/10/22
24,260
4.06%
03/10/22-09/10/22
58,941
10.27%
10/10/22-16/10/22
66,587
12.85%
17/10/22-23/10/22
38,559
8.37%
24/10/22-30/10/22
48,635
11.53%
31/10/22-06/11/22
39,019
10.45%
07/11/22-13/11/22
39,743
11.89%
14/11/22-20/11/22
47,768
16.22%
21/11/22-27/11/22
30,311
12.29%
28/11/22-04/12/22
28,176
13.02%
05/12/22-11/12/22
19,474
4.98%
12/12/22-18/12/22
11,387
3.07%
19/12/22-25/12/22
12,721
3.54%
26/12/22-01/01/23
7,477
2.15%
02/01/23-08/01/23
4,970
3.57%
09/01/23-15/01/23
3,516
2.62%
16/01/23-22/01/23
1,826
1.40%
23/01/23-29/01/23
1,679
1.30%
30/01/23-05/03/23
5,143
4.05%
Inspection reports
Case Number: 2021-0146
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Case paperwork and physical inspection carried out by while shadowed by
Fish removed from pens for vmd sampling appeared in good health with no internal signs of disease. Fins showing no damage. Lice loads reflecting the numbers that have been reported. Site has just begun feeding stock with SLICE.
LUM morts - wk16 326 (0.04%), wk17 533 (0.65%), wk 18 496 (0.61%), wk 19 (706 (0.88%). LUM stocked on site from wk 12.
Seal Pro nets with sinker tube to maintain tension. [Original PDF]
Case Number: 2021-0406
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All salmon input from Geisgil. Transported in FW. Lump fish input from Ocean Matters and Otterferry,
Morts/site/wk; Wk30 0.32%, Wk31 0.9%, Wk32 1.85%, Wk33 1.07%, Wk34 0.96%, wk35 1.19 %, Wk36 1.3%, Wk37 1.4%, wk38 10.84%, Wk39 20%, Wk40 14.5%, Wk 41 0.95% - part week.
Currently divers are removing about 200 morts/cage/day.
There were a number of mortality disposal methods available for the two sites;
• Billy Bowie- whole in skips to Barkip Biogas (collection docs observed).
• Gogar – Energen Bio Gas- to Dunnswood Road, Cumbernauld (collection docs observed).
• They have a new well boat the Buccaness - hydrolicer and macerator/ensiler. Can hold 1000 cube of morts, current morts on- board of 200 cube. - material ensiled with formic acid. Then it will be pumped off into tankers and used as biofuel but uncertain currently of final destination. The boat was present during our visit.
• Fergusons boat for mort removal had been used but was not on site during our visit.
Collection docs were available for inspection from Billy Bowie and Gogar. Capacity for mort disposal was in my opinion adequate and staff numbers at the sites were increased to deal with the mortalities with staff being brought in from other areas. Divers were also present at the time of our visit for mortality removal.
Lice; caligus peaked wk37 at 10.37. Increased mortality had prevented treatment and there was evidence on site of lice damage on some fish.
Treatments;Hydrolicer 24/6/21- 2/6/21, FW and salmosan 18/7/21-23/7/21, hydrolicer 4/8-14/8, salmosan 28/8, hydroliced 1/9-
4/9, hydrolicer 27/9/-4/10, FW panned 13/10/21.
Health surveillance;
AGD- low level. Most resent sample slight higher but not at levels which would be considered to have caused mortality.
PCV - haematocrit levels. Have fallen in last couple of weeks.
CPK -muscle fatigue for PD- have been low levels showing recovery from infection.
Mortality considered to be due to environmental insult but no jellies observed in water samples. Upwell species were observed.
Morts - normally taken by site boat and skipped at shore base. Divers in daily to remove morts. - numbers of fish on site will be reviewed following a fw well boat treatment. [Original PDF]
Case Number: 2022-0342
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Fish were input on site for the first time in wk17. Fish were input at ~150g and were noted to be soft as well as possess reduced amount of mucus. The stock on site originates from two hatcheries: Applecross Smolt unit and Girlsta Hatchery. The fish from Girlsta are a mix of stofinfiskur and Aquagen.
During the site inspection, fish were observed to be jumpy. In addition, a freshwater treatment and transfer was occuring to reduce the biomass on site so that in the next 3 weeks a SLICE treatment can occur. The freshwater treatment was being administered by the Ronjafisk and exposure to freshwater is ~1 hour. Transfers were to Druimyeon Bay, where 5 pens from
East Tarbert Bay had already been moved to.
From health surveillance conducted on site, 2 pens (1 and 7) were confirmed to have PRV. No clinical changes were observed and is currently not the primary suggested cause of increased mortality on site.
Caligus levels extremely high in Wk 29, 30 and 31. Micro jelly bloom occurred in the week of input, which agitated gills primarily. Then the arrival of Lion's mane jellyfish exacerbated gill issues on site further. Mild AGD observed in gills of fish.
Diagnostic samples taken from pen 1. Sampled fish were moribund and lethargic. In addition, signs of loss of equilibrium where beginning.
Fish sampled for VMD appeared healthy. [Original PDF]
Case Number: 2022-0465
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Site visited 17/8/22 and diagnostic samples taken case 20220342. Identified from samples - AGD, IPN, vibrio, aeromonas spp,
Paranucleospora theridion. - PD confirmed onsite along with gill health issues, AGD confirmed onsite.
Weekly morts for site; 19/9 1.21% 7307 fish; 26/9 4.06% 24260 fish; 3/10 10.27% 58941 fish; 10/10 12.85% 66.587 fish; 17/10
8.37% 38559 fish. Freshwater treatment scheduled week 44 - gill health and viral disease.
Morts for week 43 2022 were 48635 fish (11.53%) due to gill issues, PD and rickettsia, week 44 (10.45%), and week 45
(11.89%)
Site thermometer used as error in T146
SLICE treatment 11/9/22; Freshwater on Ronjafisk, 15/9, 11/10, 6/11
Histo health reports; 24/10/22 acute SAV, gills with multiple aetiologies- no amoebae; 18/10/22; gills low level environmental, suspect PRV, low energy stores suggesting fish not feeding. 26/9/22 AGD
Wrasse mortality reported to be low.
Due to poor weather only able to walk round 4 cages. However moribund fish were collected from theses cages. [Original PDF]
Case Number: 2024-0182
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During previous cycle site had black losses of wrasse at harvest (wk 11 2023, mort count - 12,000)
Before site became fallow the site had experienced elevated mortalities that were mainly contributed to Pancreas disease.
Inspection was conducted by supervised by [Original PDF]