Site Details: Poseidon

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: Oct 2020
Total losses: 20.1 %

Production cycle end date: Oct 2022
Total losses: 17.2 %

Source

Fish Health Inspectorate mortality

Date:
25/07/22-31/07/22
Mortality:
3,650
Mortality Rate:
1.20%
Reason given: Gill Health related
Gill Health related
Harmful plankton; CMS, 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:
15/08/22-21/08/22
Mortality:
3,830
Mortality Rate:
1.80%
Reason given: Gill Health Related
Gill Health Related
PGD, destocking through harvest
Mortalities had reduced below reporting levels in July, biomass reduction is ongoing, FHI to monitor.
Date:
22/08/22-28/08/22
Mortality:
2,984
Mortality Rate:
1.4%
Reason given: Gill Health Related
Gill Health Related
PGD, destocking through harvest
Site due to be fallow by 30/09/2022
Date:
05/09/22-11/09/22
Mortality:
1,712
Mortality Rate:
1.30%
Reason given: Virus disease; Gill Health Related
Virus disease; Gill Health Related
PGD, destocking through harvest
Site due to be fallow by 30/09/2022
Date:
12/09/22-18/09/22
Mortality:
1,635
Mortality Rate:
1.30%
Reason given: Virus disease; Gill Health Related
Virus disease; Gill Health Related
PGD, destocking through harvest
Site due to be fallow by 30/09/2022
Date:
19/09/22-25/09/22
Mortality:
1,144
Mortality Rate:
1.10%
Reason given: Virus disease; Gill Health Related
Virus disease; Gill Health Related
PGD, destocking through harvest
Site due to be fallow by 30/09/2022
Date:
26/09/22-02/10/22
Mortality:
1,775
Mortality Rate:
2.10%
Reason given: Virus disease; Gill Health Related
Virus disease; Gill Health Related
PGD, destocking through harvest
Fallow by end of week 41. FHI to monitor.
Date:
02/10/22-09/10/22
Mortality:
1,915
Mortality Rate:
2.3%
Reason given: Virus disease; Gill Health Related
Virus disease; Gill Health Related
PGD, destocking through harvest
Site to fallow 15/10/22
Date:
10/10/22-16/10/22
Mortality:
1,902
Mortality Rate:
3.90%
Reason given: Virus disease; Gill Health Related
Virus disease; Gill Health Related
PGD, destocking through harvest
Percentage increasing due to number of fish on site dropping. Due to be fallow wk 42, 2022. FHI to monitor
Date:
17/10/22-23/10/22
Mortality:
259
Mortality Rate:
17.40%
Reason given: Virus disease
Virus disease
CMS; harvesting to fallow
Historic mortality event, fish were harvested out. No further action

Source

Inspection reports

Case Number: 2021-0249


Download Ownership of site about to change so uncertain regarding next input date.
No mention on FMS that the area is stocked with a single year class but stated in VHWP.
Remote inspection on 14/07/21 done by observed by .
Physical inspection and VMD sampling carried out by observed by .
The main population appeared healthy and behaving normally, no dead fish observed. Between 1 to 6 fish per pen observed with damaged tails due to Caligus, extremely low percentage given the amount of stock on site. The fish removed for VMD sampling looked healthy and had less than one Caligus per fish. No clinical signs observed.
Stock on site originating from Kames arrived by wellboat but combined stock from 3 different sources (FS0270, FS0776,
FS0821). [Original PDF]

Case Number: 2023-0484


Download Fish came onto site 9th March, 15th, 17th March and 27th April and then 1st May 2023 from Girsta Hatchery and Barcaldine.
Wrasse deliveries between 05/07/23 to 17/08/23 by boat. Delivery notes seen.
Health report Pharmac - 29/09/2023 - histology AGD and some HSMI but no IPN.
Peak in mortality Week 42 2022 not reported to FHI - 17.4% (259 fish) - site was destocking at the time, last mortality event report was the week before stating "PGD, site destocking, should be fallow week 42". This has now been reported.
Monthly wrasse mortality - Oct - 4.26% (994 fish), Sep - 1.83% (435 fish) and Aug - 1.04% (249 fish). October increase is due to the recent peroxide treatments and being unable to move wrasse out of the cages.
Last lice counts were 25/10/2023 (last Wednesday) - still in withdrawal for T.M.S
Treatments - last SLICE treatment 17/07-23/07, peroxide 12/09 to 19/09 and 09/10 to 13/10/2023.
Sea lice - no sea lice issues so far this cycle, last cycle 2022 female lice peaked at 4.41 (Wk 14 2022) but treatment in week
15 reduced sealice to 0.79 in wk 16.
Farm Manageent Statement did not identify if one or more year classes were to be stocked on site, however in the VHWP it was stated that single year class was to be stocked.
During the physical inspection of the site, site staff were out collecting the daily mortality and no moribund fish were observed, even in the pens where mortality had not been collected yet. No issues with containment were seen, pens were extremely tidy and all nets tightly secured. Fish were shoaling deeper in the water column and feed responses observed were good.
VMD samples collected from pens 1, 7 and 8. Upon examination both externally and internally, fish appeared healthy with only eye damage noted for the fish from pen 8. An average of 2 caligus were observed on fish caught for VMD. [Original PDF]

Source