Site Details: Slocka Ronas Voe

North Mavine
Heylor
ZE2 9RL
Operator: Scottish Sea Farms Ltd
Water type: Seawater

Average female lice per fish

Source

Salmon Scotland mortality

Source

Cumulative mortality over full production cycle

Production cycle end date: Sep 2018
Total losses: 7.9 %

Production cycle end date: Oct 2020
Total losses: 16 %

Production cycle end date: Aug 2022
Total losses: 15.1 %

Production cycle end date: Feb 2024
Total losses: 28.3 %

Source

Fish Health Inspectorate mortality

Date:
23/05/22-29/05/22
Mortality:
4,403
Mortality Rate:
1.12%
Reason given: Environmental
Environmental
complex gill disorder diagnosed, mortality reduced below 1% threshold in following wk 22
Mortality levels back below reporting threshold for wk 22 (30/05/22). No further action.
Date:
25/07/22-31/07/22
Mortality:
6,325
Mortality Rate:
2.40%
Reason given: Gill Health related
Gill Health related
CGD, destocking through harvest
To enquire about a fallow date. FHI to monitor. Update 5/8/22 no fallow date set. Destocking on harvest plan to reduse biomass
Date:
01/08/22-07/08/22
Mortality:
17,181
Mortality Rate:
6.8%
Reason given: Gill Health related
Gill Health related
CGD, harvesting to fallow
Site will be fallow by end of w/b 08/08/2022. No further action.
Date:
08/08/22-14/08/22
Mortality:
13,056
Mortality Rate:
7.5%
Reason given: Gill Health related
Gill Health related
CGD, harvesting to fallow within week
Site scheduled to fallow by end of Aug 2022.
Date:
15/08/22-21/08/22
Mortality:
3,354
Mortality Rate:
4.10%
Reason given: Gill Health related
Gill Health related
CGD, site fallow in week 33
Site is now fallow.
Date:
25/12/22-31/12/23
Mortality:
7,325
Mortality Rate:
2.20%
Reason given: Gill Health related
Gill Health related
CGD; Post exposure to Apolemia string jellyfish
FHI to monitor.
Date:
06/11/23-12/11/23
Mortality:
5,680
Mortality Rate:
1.4%
Reason given: Gill Health related; Environment
Gill Health related; Environment
CGD; Destocking through harvest
First report this year. FHI to monitor.
Date:
13/11/23-19/11/23
Mortality:
6,188
Mortality Rate:
1.50%
Reason given: Gill Health related; Environment
Gill Health related; Environment
CGD, Destocking through harvest
2nd notification of the cycle. Mortality rate stable and biomass being reduced through harvest. FHI to monitor
Date:
20/11/23-26/11/23
Mortality:
4,567
Mortality Rate:
1.20%
Reason given: Gill Health related
Gill Health related
CGD; FW wellboat treatment scheduled
3rd notification of cycle but mortality levels down slightly on previous two weeks. FHI to monitor
Date:
27/11/23-03/12/23
Mortality:
13,253
Mortality Rate:
3.60%
Reason given: Gill Health related
Gill Health related
CGD; FW wellboat treatment underway
4th consecutive week of elevated mortalities. Business contacted. FHI to monitor.
Date:
04/12/23-10/12/23
Mortality:
3,691
Mortality Rate:
1.10%
Reason given: Gill Health related
Gill Health related
CGD; FW wellboat treatment for AGD completed
FHI to monitor - significant reduction in reported mortalities
Date:
11/12/23-17/12/23
Mortality:
6,148
Mortality Rate:
1.8%
Reason given: Gill Health related
Gill Health related
CGD; Post FW wellboat treatment for AGD
FHI to monitor.
Date:
18/12/23-24/12/23
Mortality:
8,138
Mortality Rate:
2.4%
Reason given: Gill Health related
Gill Health related
CGD; Post exposure to Apolemia string jellyfish
Continued mortality, with slight increase on previous week. FHI to continue to monitor in coming weeks following jellyfish issues.
Date:
01/01/24-07/01/24
Mortality:
9,897
Mortality Rate:
3.00%
Reason given: Gill Health related
Gill Health related
CGD; Destocking through harvest
FHI to monitor
Date:
08/01/24-14/01/24
Mortality:
8,226
Mortality Rate:
2.8%
Reason given: Gill Health related
Gill Health related
CGD; Destocking through harvest
FHI to monitor.
Date:
15/01/24-21/01/24
Mortality:
10,071
Mortality Rate:
3.50%
Reason given: Gill Health related; Environmental
Gill Health related; Environmental
CGD; Post storm/weather; Destocking through harvest
FHI to monitor.
Date:
22/01/24-28/01/24
Mortality:
9,932
Mortality Rate:
3.6%
Reason given: Gill Health related; Environmental
Gill Health related; Environmental
CGD; Post storm/weather; destocking through harvest
FHI to monitor.
Date:
29/01/24-04/02/24
Mortality:
14,009
Mortality Rate:
5.60%
Reason given: Gill Health related; Environmental
Gill Health related; Environmental
CGD; Post storm/weather; harvesting to fallow (anticipating to fallow by the end of February)
FHI to monitor.
Date:
05/02/24-11/02/24
Mortality:
7,562
Mortality Rate:
3.60%
Reason given: Gill Health related; Environmental
Gill Health related; Environmental
Harvesting to fallow (anticipating to fallow by the end of February).
FHI to monitor.
Date:
12/02/24-18/02/24
Mortality:
5,961
Mortality Rate:
3.80%
Reason given: Gill Health related; environmental
Gill Health related; environmental
Harvesting to fallow in wk8
FHI to monitor. Site planning to fallow this week.
Date:
19/02/24-25/02/24
Mortality:
2,363
Mortality Rate:
2.2%
Reason given: Gill Health related; environmental
Gill Health related; environmental
Harvesting to fallow in wk 9
Site to fallow this week. FHI to monitor.
Date:
19/02/24-25/02/24
Mortality:
6,862
Mortality Rate:
1.4%
Reason given: Environmental
Environmental
Post storms; destocking through harvest
FHI to monitor.

Source

Inspection reports

Case Number: 2021-0057


Download Remote inspection conducted by 13/07/21, site inspection and VMD sampling by 22/07/21
9/10 cages have 10m sea lice blinds installed and 10th cage has a 13m sea lice blind installed. No issues reported on site with gill swabs testing negative for AGD and histology results not indicating anything of note.
Site did experience a plankton bloom WK 27 2021, plankton included Pseudo nitzschia, feed was withheld and no issues reported.
May stock with Lumpfish later in year, dependant on sea lice numbers. Site was stocked with both wrasse and lumpfish during the previous cycle.
Fish were deeper in the water column, visibility was very good and the fish observed appeared in good condition and of uniform size. 6 failed smolts observed with some tail damage, these were also deeper in the water.
Sea lice - very low levels of caligus and no Leps counted in last sea lice count.
8 fish removed for VMD, all appeared healthy and in good condition.
One site within one tidal excursion, long term fallow with no plans to restock, but to remain active. [Original PDF]

Case Number: 2023-0325


Download All stocks from Girlsta Hatchery (Aquagen stock), input at 130-140g.
SLICE treatments of current cycle in February (20-26th), April (24-30th) and June (7-13th) and July (4-10th). No more SLICE treatments planned.
Planning freshwater treatment for AGD in next couple of weeks.
Mortalities removed daily. Divers check nets monthly. Take daily water samples (Mon-Fri) which are analysed for plankton.
First harvests planned to start in December (live harvest).
Other site in voe, Pobie Sukka, has been fallow for over 6 years with all equipment removed so Slocka Ronas Voe only stocked site in voe.
No moribund fish observed and fish sampled for VMD appeared healthy.
Mortality and sea lice records completed remotely on 21/7/23, other paperwork and inspection completed on 26/7/23. [Original PDF]

Source