Site Details: Olna South

Gremista
Lerwick
ZE1 0PX
Operator: Scottish Sea Farms Ltd
Water type: Seawater

Average female lice per fish

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Salmon Scotland mortality

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Cumulative mortality over full production cycle

Olna South Production cycle end date: Nov 2019
Total losses: 20.7 %

Olna South Production cycle end date: Nov 2021
Total losses: 9.9 %

Olna South Production cycle end date: Mar 2024
Total losses: 13.6 %

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Fish Health Inspectorate mortality

Date:
09/10/23-15/10/23
Mortality:
4,643
Mortality Rate:
2.00%
Reason given: Environment; Gill health related
Environment; Gill health related
Insult to gills. Site monitoring with weekly PCR for AGD.
FHI to monitor.
Date:
18/12/23-24/12/23
Mortality:
2,498
Mortality Rate:
1.8%
Reason given: Jellyfish: Gill health related
Jellyfish: Gill health related
Post exposure to Apolemia string jellyfish
Second report, with first in October. FHI to monitor.
Date:
15/01/24-21/01/24
Mortality:
2,580
Mortality Rate:
1.40%
Reason given: Gill Health related
Gill Health related
CGD; destocking through harvest
FHI to monitor.

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Inspection reports

Case Number: 2021-0251


Download No recent issues reported on site, no dead or moribund observed during the inspection. Two fish removed for VMD sampling appeared in very good condition with very few sea lice observed and no adult females.
Only 5 cages stocked as fewer fish delivered than expected, however, it was also reported that the fish delivered were a very uniformed size and are growing well.
Feeding controlled centrally from Lerwick.
Very good visibility and very calm weather.
SLICE treatment planned to begin next week. Only SLICE used this cycle. [Original PDF]

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