Site Details: Bastaness

Yell Shorebase
Mid Yell
ZE2 9BN
Operator: Cooke Aquaculture Scotland 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: 21.3 %

Production cycle end date: Sep 2019
Total losses: 9 %

Production cycle end date: Oct 2020
Total losses: 7.4 %

Production cycle end date: Oct 2021
Total losses: 15.3 %

Production cycle end date: Oct 2022
Total losses: 13.5 %

Production cycle end date: Nov 2023
Total losses: 21.2 %

Source

Fish Health Inspectorate mortality

Date:
28/08/23-03/09/23
Mortality:
4,193
Mortality Rate:
1.47%
Reason given: Environmental/Viral Disease
Environmental/Viral Disease
CMS identified. Site is currently harvesting.
Business correspondent contacted.First report this cycle. FHI to monitor.
Date:
05/09/23-11/09/23
Mortality:
3,588
Mortality Rate:
1.28%
Reason given: Gill Health+CMS
Gill Health+CMS
Harvests are ongoing, site to be fallow in October, FLS treatments also administered for sea lice, so mortalities likely to increase post treatment. FHI to monitor.
Date:
11/09/23-17/09/23
Mortality:
8,401
Mortality Rate:
3.03%
Reason given: Sealice+CMS
Sealice+CMS
Site contacted: Site currently being harvested out. Currently, 3 cages are empty. The whole will be fallow in 3-4 weeks. FHI to monitor
Date:
18/09/23-24/09/23
Mortality:
3,848
Mortality Rate:
1.52%
Reason given: Sealice+CMS
Sealice+CMS
Mortality down from previous week. Site to fallow within next 3 weeks. FHI to monitor
Date:
25/09/23-01/10/23
Mortality:
1,981
Mortality Rate:
1.05%
Reason given: Sealice+CMS
Sealice+CMS
Site contacted for further information, mortality has decreased back below the reporting threshold. CMS is the main driver of mortality on site. The site is currently harvesting to fallow.
FHI to monitor.
Date:
09/10/23-15/10/23
Mortality:
2,066
Mortality Rate:
1.78%
Reason given: CMS/ Gills
CMS/ Gills
Contacted business: harvesting, currently estimating the site will fallow by end of November 2023.
Contacted business to ask for an update on harvesting progress on site. Information updated. FHI to monitor.

Source

Inspection reports

Case Number: 2021-0260


Download 5 dead observed across site, not fresh dead. Mortalities are removed using an ROV, which was reported to be very effective at the task. Nets are washed every two weeks, by net wash boat.
2 fish sampled for VMD appeared in very good condition and no sea lice observed, very few treatments reported to have been required this cycle, last treatment in May was FW followed by Salmosan, this was reported to have given a very good clearance.
Site has quite a strong tide, fish will be transferred from Ness of Copister at the end of the year for ongrowing. No issues reported on site.
Good visibility at time of inspection and fish observed shoaling well and appeared in very good condition and of uniform size.
Remote paperwork conducted 15/07/21, site inspection conducted 21/07/21 [Original PDF]

Source