Site Details: Gletness

Wadbister
Girlsta
ZE2 9SQ
Operator: Scottish Sea Farms Ltd
Water type: Seawater

Average female lice per fish

Source

Salmon Scotland mortality

Source

Fish Health Inspectorate mortality

Date:
09/01/23-15/01/23
Mortality:
11,373
Mortality Rate:
1.60%
Reason given: Transfer related
Transfer related
Post transfer, diagnostic visit
First report. FHI planned visit w/b 6/2/23. FHI to monitor in meantime.
Date:
16/01/23-22/01/23
Mortality:
10,115
Mortality Rate:
1.40%
Reason given: Transfer related
Transfer related
Post transfer; secondary bacterial; vet visit.
FHI planned visit w/b 6/2/23. FHI to monitor in meantime.
Date:
23/01/23-29/01/23
Mortality:
12,444
Mortality Rate:
1.80%
Reason given: Transfer related
Transfer related
Post transfer; secondary bacterial; vet visit. Mild AGD and PGD confirmed onsite.
FHI visit scheduled
Date:
30/01/23-05/02/23
Mortality:
14,397
Mortality Rate:
2.10%
Reason given: Handling
Handling
Secondary bacterial; vet visit & diagnostics
FHI visit scheduled. FHI to monitor.
Date:
06/02/23-12/02/23
Mortality:
18,435
Mortality Rate:
2.70%
Reason given: Bacterial disease
Bacterial disease
Secondary bacterial skin disease
FHI visit scheduled. FHI to monitor.
Date:
13/02/23-19/02/23
Mortality:
17,637
Mortality Rate:
2.70%
Reason given: Bacterial disease
Bacterial disease
Secondary bacterial skin disease
FHI visit scheduled. FHI to monitor.
Date:
20/02/23-26/02/23
Mortality:
17,077
Mortality Rate:
2.70%
Reason given: Bacterial disease
Bacterial disease
Secondary bacterial skin disease
Diagnostic samples taken 02/03/2023. FHI to monitor.
Date:
27/02/23-05/03/23
Mortality:
13,999
Mortality Rate:
2.30%
Reason given: Bacterial disease
Bacterial disease
Secondary bacterial skin disease, increased mortality removal, under Veterinary review
Diagnostic samples taken 02/03/2023. FHI to monitor. Business contacted for further detail on bacteria detailed as reason. Update- Tenacibacilum.
Date:
06/03/23-12/03/23
Mortality:
7,499
Mortality Rate:
1.20%
Reason given: Bacterial disease
Bacterial disease
Secondary bacterial skin disease, increased mortality removal, under Veterinary review
Diagnostic samples taken 02/03/2023. Bacteria reported by business to be Tenacibacilum. FHI to monitor

Source

Inspection reports

Case Number: 2020-0073


Download Site fallow and has been since wk 1, 2017. It may be used as a nursery site this autumn, after which there are no future plans to use again so to be made inactive. No pens currently in the water at site location but area is still marked by a buoy at each corner of the grid area. [Original PDF]

Case Number: 2021-0266


Download Site fallow, one barge in water, but no facilities present on site.
Site was to be made inactive, however, following the recent acquistion by Scottish Sea Farms site to remain active. Future of site unknown. [Original PDF]

Case Number: 2022-0570


Download No cleanerfish on site.
Mortalities have gone to Setterness so delivery notes will be up at Setterness. No delivery notes from this cycle currently. Next bin of mortalities will go to Energy Recovery Plant (Lerwick) as mortalities increase.
SLICE treatment - 31st October - 6th November.
Inspection of pens could not be undertaken, as weather was too rough to get onto site. Points in biosecurity records checked to ensure that procedures were recorded, however assessment of whether they were implemented on site could not be conducted.
Paperwork completed by , supervised by . [Original PDF]

Case Number: 2023-0016


Download Full ECI paper work completed by on 08/02/2023.
Site inspection and diagnostic sampling could not be carried out as weather conditions were unsafe. The site is scheduled to be revisited in due course.
The site was stocked between 30/11/2022 and 07/12/2022 with fish sourced from Migdale and Barcaldine. Cages 1, 5 and 6 hold Migdale fish only and pens 2, 3 and 4 are stocked with Barcaldine only.
Following incial input to the site some post transfer mortality occurred up to two weeks post transfer. The site was treated with
FW followed by a peroxide treatment on 25/01/2023 in order to combat AGD which was confirmed by the company vet on
10/01/2023. Following treatment, gill scores for AGD have decreased and an overall improvement to gill health has been observed. Mortality onsite however is still elevated with the three cages stocked with Barcaldine fish accounting for the majority of mortality on site. Approximately 50% of the mortality on site in recent weeks have been reported having lesions, positioned around the vent and flank. Approximately 40% of the mortality accounted for in recent weeks has been recorded as having an unknown cause, where no obvious clinical signs of disease have been associated with these fish and 10% has been classified as input failures.
Most recent vet report 10/01/2023 - Positive for AGD, no other significant results. Further samples have been taken since the
10/01/2023 however the report has yet to be issued.
Mortality removal - Secured in site specific mort tubs transported to shore then transferred to SEM Energy Ltd. Most recent pick up, 07/02/2023 940kg.
Present week mortality (Week 6) - 1.16% 7,838. [Original PDF]

Case Number: 2023-0078


Download Most recent fish vet report dated 06/02/2023 detailed AGD detected 7 out of 14 samples on 22/02/2023. Histology samples taken detected no further pathogens from fish sampled.
On the date of inspection the weather was fair, with good visibility into each pen. During the time of inspection, site staff were conducting routine mortality removal which allowed for closer observation of the fish onsite. Cages 1 and 6, stocked with fish sourced from Migdale (Loch Damph) were observed shoaling well and responding positively to routine feeding regimes. These fish have been at sea a little longer than the rest of the site, input in October 2022. Mortality in cages 1 and 6 have been low throughout the current production cycle at Gletness compared to the rest of the site, these fish are the largest of the site, averaging around 1 kg. 7 fish in cage 1 and 8 fish in cage 6 were observed with lesions to the flank. VMD samples were taken from cages 1 and 6, no internal signs of disease were observed.
Cages 2, 3 and 4 are stocked with fish from Barcaldine smolt unit. Mortality has been significantly elevated in these cages over the past 6 weeks, accounting for the majority of the sites mortality. Many fish were observed in these pens as having circular, uniform lesions to the flanks and around the vent. Many fish with lesions were lethargic and moribund. Less frequent behavioural signs of clinical disease observed included flashing / loss of equilibrium and spiralling. Fish from cage 5 (Migdale -
Loch Shin) displayed somewhat similar clinical signs of disease to cages 2,3 and 4 in smaller numbers, with an additional observation of mild dorsal and tail fin rot observed. 5 fish were removed for diagnostic sampling from cages 2, 3 and 5.
Gletness currently operates as a nursery site, plans are in place to transfer the current stock to Sweening Voe 3 on 22nd
March 2023.
New site manager - details updated.
Mortality removal - Secured in site specific mort tubs transported to shore then transferred to SEM Energy Ltd. [Original PDF]

Source