Site Details: North Papa

Gremista
Lerwick
ZE1 0PX
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: Aug 2019
Total losses: 35.3 %

Production cycle end date: Aug 2021
Total losses: 11.8 %

Production cycle end date: Aug 2023
Total losses: 41.3 %

Source

Fish Health Inspectorate mortality

Date:
06/06/22-12/06/22
Mortality:
13,969
Mortality Rate:
1.90%
Reason given: Transfer
Transfer
Sweep net used to remove and cull poor performing sub-population.
Mortality returned below threshold the following weeks. FHI to monitor.
Date:
21/11/22-27/11/22
Mortality:
7,792
Mortality Rate:
2.20%
Reason given: Gill health Related
Gill health Related
CGD; Poor weather
AGD treatment to be administered. Fish were subject to mico jelly Muggiea Atlantica exposure causing gill isues, morts are attributed to AGD, FHI to monitor.
Date:
28/11/22-04/12/22
Mortality:
23,524
Mortality Rate:
7.30%
Reason given: Gill health Related
Gill health Related
CGD; AGD FW wellboat treatment scheduled
FHI to monitor. To look at possibility of Shetland trip to visit
Date:
05/12/22-11/12/22
Mortality:
4,966
Mortality Rate:
1.70%
Reason given: Gill health Related
Gill health Related
CGD; post AGD FW wellboat treatment
Big decrease in reported mortality from previous week. FHI to monitor
Date:
13/03/23-19/03/23
Mortality:
4,457
Mortality Rate:
1.60%
Reason given: Virus disease
Virus disease
CMS; destocking through harvest
FHI tomonitor, inspection scheduled.
Date:
20/03/23-26/03/23
Mortality:
6,487
Mortality Rate:
2.30%
Reason given: Virus disease
Virus disease
CMS; destocking through harvest
Business contacted. Pens with highest mortalities harvested out so mortality levels expected to drop. FHI to monitor. Inspection scheduled.
Date:
27/03/23-02/04/23
Mortality:
4,219
Mortality Rate:
1.6%
Reason given: Virus disease
Virus disease
CMS; destocking through harvest
FHI to monitor.
Date:
03/04/23-09/04/23
Mortality:
4,003
Mortality Rate:
1.50%
Reason given: Virus disease; handling
Virus disease; handling
CMS; post FW wellboat treatment
FHI to monitor.
Date:
17/04/23-23/04/23
Mortality:
3,664
Mortality Rate:
1.5%
Reason given: Virus Disease; Handling
Virus Disease; Handling
CMS; post FW wellboat treatment
Continuation of ongoing mortality event, Wellboat treatment early April resulted in increased morts due to background CMS. Mortalities are pen specific. FHI to monitor.
Date:
24/04/23-30/04/23
Mortality:
4,651
Mortality Rate:
1.90%
Reason given: Virus Disease
Virus Disease
CMS
Continuation of ongoing mortality event, Wellboat treatment early April resulted in increased morts due to background CMS. Mortalities are still pen specific. FHI to monitor.
Date:
01/05/23-07/05/23
Mortality:
4,195
Mortality Rate:
1.70%
Reason given: Virus Disease
Virus Disease
CMS
Ongoing mortality below 2%. Routine FHI visit scheduled. FHI to monitor
Date:
08/05/23-14/05/23
Mortality:
5,179
Mortality Rate:
2.20%
Reason given: Environment; Algae & Jellyfish; Virus disease
Environment; Algae & Jellyfish; Virus disease
CMS; Feeding withheld during peak plankton,
Routine FHI visit scheduled. FHI to monitor
Date:
15/05/23-21/05/23
Mortality:
6,437
Mortality Rate:
2.7%
Reason given: Gill Health; Virus disease
Gill Health; Virus disease
CMS; post plankton insult ot gills
Routine FHI visit scheduled week23. FHI to monitor
Date:
22/05/23-28/05/23
Mortality:
6,757
Mortality Rate:
3.00%
Reason given: Gill Health; Virus disease
Gill Health; Virus disease
CMS; post physical delicing
Routine fish health FHI visit scheduled week 23. Mortality count continues to fall. FHI to monitor
Date:
29/05/23-04/06/23
Mortality:
5,145
Mortality Rate:
2.3%
Reason given: Gill Health; Virus disease
Gill Health; Virus disease
CMS;
Site inspection 7/6/2023 diagnostic samples taken.
Date:
05/06/23-11/06/23
Mortality:
2,892
Mortality Rate:
1.30%
Reason given: Gill Health; Virus disease
Gill Health; Virus disease
CMS;
Mortality has reduced from previous week. Diagnostic samples taken 7/6/2023 - awaiting full results. FHI to monitor.
Date:
12/06/23-18/06/23
Mortality:
2,824
Mortality Rate:
1.3%
Reason given: Gill Health; Virus disease
Gill Health; Virus disease
CGD; CMS; Post physical delicing
Site inspected 07/06/2023. Diagnostic samples taken, awaiting results. FHI to monitor.
Date:
19/06/23-25/06/23
Mortality:
5,863
Mortality Rate:
2.70%
Reason given: Virus disease
Virus disease
CMS; post physical delicing
Site inspected Wk 23, diagnostic samples taken, poisitive for PMCV and IPNV.
Date:
26/06/23-02/07/23
Mortality:
5,088
Mortality Rate:
2.4%
Reason given: Virus disease
Virus disease
CMS; Destocking through harvest; Business contacted: site planned to fallow 2023wk30
Site inspected Wk 23, diagnostic samples taken, positive for PMCV and IPNV.
Date:
03/07/23-09/07/23
Mortality:
3,588
Mortality Rate:
1.70%
Reason given: Virus disease
Virus disease
CMS; Destocking through harvest
Site inspected Wk23, diagnostic samples taken, positive for PMCV and IPN.
Date:
10/07/23-16/07/23
Mortality:
2,963
Mortality Rate:
1.8%
Reason given: Virus disease
Virus disease
CMS; Destocking through harvest; Site inspected Wk 23, results positive for PMCV and PRV. Targeted harvesting occuring on site.
Business correspondent contacted for further information. FHI to monitor.
Date:
17/07/23-23/07/23
Mortality:
3,502
Mortality Rate:
2.5%
Reason given: Virus disease
Virus disease
CMS; Destocking through harvest
Business correspondent contacted for further information. FHI to monitor.
Date:
24/07/23-30/07/23
Mortality:
2,374
Mortality Rate:
2.00%
Reason given: Virus disease
Virus disease
CMS; Destocking through harvest; business contacted - anticipated (but not finalised) fallow by 30th August.
FHI visited 28/7/23, Diagnostic samples collected- results outstanding. FHI to monitor.
Date:
31/07/23-06/08/23
Mortality:
2,596
Mortality Rate:
2.40%
Reason given: Virus disease
Virus disease
CMS; Destocking through harvest
Site inspected on 07/06/23 and diagnostic samples taken - CMS identified
Date:
07/08/23-13/08/23
Mortality:
1,616
Mortality Rate:
1.50%
Reason given: Virus disease
Virus disease
CMS; Destocking through harvest
Site inspected on 07/06/23 and diagnostic samples taken - CMS identified.
Date:
14/08/23-20/08/23
Mortality:
1,248
Mortality Rate:
1.20%
Reason given: Virus disease
Virus disease
CMS; Destocking through harvest
18th consecutive week of mortality over threshold. Site inspected 07/06/2023 - CMS identified. Mortality decreasing. FHI to monitor.

Source

Inspection reports

Case Number: 2021-0226


Download Slight CMS onsite, fish are being harvested and those pens with higher mortality have been harvested first so mortality has remained low.
Company policy has been to limit cleaner fish use due to health concerns for the cleanerfish.
Company operates at a treatment trigger level of 0.1 AF. 14/07/21 - 2.8 AF, reported. Site currently being harvested.
Paperwork carried out 15/07/21 by observed by
VMD sampled by , observed by . VMD fish looked healthy when opened [Original PDF]

Case Number: 2023-0240


Download Site inspected in a calm sea state with heavy cloud cover, visibility from the pen side was <2m. During the inspection of the stock 14 lethargic / moribund fish were observed. The site has been burdened by a prolonged period of on-going mortality,
North Papa conducted a freshwater treatment using the Aqua Viking in March and approximately 10% of the stock sustained physical damage thought to have been caused during crowding which resulted in increased mortality in the weeks following the treatment. The site confirmed CMS on 19/05/2023 and mortality has been above the reporting threshold since. Current mortality appears to be affecting all cages across the site evenly. During the inspection of the site three fish displaying clinical signs of disease were removed from cages 5, 6 & 8 for diagnostic sampling.
The site have also been experiencing had a higher than usual burden of Caligus elongatus for the current time of year. North
Papa conducted a slice treatment from 24/04/23 - 05/05/23, followed by a thermolicer treatment from 22/05/23 - 01/06/23.
During the inspection of the site some fish were observed with mild physical damage to the under belly.
VMD samples were taken from cage 10, fish sampled for VMD appeared healthy both internally and externally. [Original PDF]

Source