Site Details: Maragay Mor

Kallin Shorebase
Grimsay
North Uist
HS6 5HY
Operator: Bakkafrost Scotland
Water type: Seawater

Average female lice per fish

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Salmon Scotland mortality

Source

Cumulative mortality over full production cycle

Maragay Mor Production cycle end date: Oct 2019
Total losses: 27.1 %

Maragay Mor Production cycle end date: Oct 2021
Total losses: 29.5 %

Maragay Mor Production cycle end date: Aug 2023
Total losses: 33.5 %

Source

Fish Health Inspectorate mortality

Date:
31/10/22-06/11/22
Mortality:
7,829
Mortality Rate:
1.32%
Reason given: Gill health related
Gill health related
In FW Schedule to be completed in weather window
First report of 2022. AGD issues on site. Waiting for weather window to treat fish with FW. FHI to monitor
Date:
07/11/22-13/11/22
Mortality:
6,280
Mortality Rate:
1.07%
Reason given: Gill health related
Gill health related
FW Scheduled wk 46/47
Mortality % down stlightly. Await treatment outcome and monitior if mortality continues to fall.
Date:
14/11/22-20/11/22
Mortality:
18,598
Mortality Rate:
3.20%
Reason given: Gill health related
Gill health related
FW wk 46/47
Weather has been hampering efforts to conduct FW treatments in recent weeks, currently 2 pens still to treat. Treatments began on the 20/11/22 so reported morts are the result of AGD. Reported mortality for week 47 is 1.68%. FHI to monitor.
Date:
21/11/22-27/11/22
Mortality:
9,471
Mortality Rate:
1.68%
Reason given: Gill health related
Gill health related
Whole site treated using freshwater completed between weeks 46 and 48.
Mortality improving from previous week. FHI to monitor.
Date:
29/05/23-04/06/23
Mortality:
7,396
Mortality Rate:
1.46%
Reason given: Viral Disease (CMS); Bacterial Disease (Furunculosis)
Viral Disease (CMS); Bacterial Disease (Furunculosis)
Freshwater Treatment wk 21. Harvesting Scheduled
First report this year, FHI to monitor following recent FW treatment.
Date:
05/06/23-11/06/23
Mortality:
9,319
Mortality Rate:
1.88%
Reason given: Viral Disease (CMS); Bacterial Disease (Furunculosis)
Viral Disease (CMS); Bacterial Disease (Furunculosis)
Site carrying out targeted harvesting on worst affected pens. Sea lice FW treatment recently completed.
FHI to monitor.
Date:
12/06/23-18/06/23
Mortality:
5,632
Mortality Rate:
1.16%
Reason given: Viral Disease (CMS), Bacterial Disease (Furunculosis)
Viral Disease (CMS), Bacterial Disease (Furunculosis)
Targetted Harvesting
Numbers reducing from previous week. FHI to monitor
Date:
03/07/23-09/07/23
Mortality:
5,027
Mortality Rate:
1.74%
Reason given: Viral Disease (CMS); Gill Health Related
Viral Disease (CMS); Gill Health Related
Business contacted for further information. CMS is confirmed on site. FHI to monitor.
Date:
10/07/23-17/07/23
Mortality:
7,073
Mortality Rate:
2.49%
Reason given: Viral Disease (CMS); Gill Health Related
Viral Disease (CMS); Gill Health Related
Targeted Harvests; FW wk 29
Mortalities have reduced and expected to be below the threshold for next reporting week.
Date:
17/07/23-23/07/23
Mortality:
2,824
Mortality Rate:
1.02%
Reason given: Viral Disease (CMS); Gill Health related
Viral Disease (CMS); Gill Health related
Targeted Harvests; FW wk 30
FHI to monitor.
Date:
24/07/23-30/07/23
Mortality:
3,426
Mortality Rate:
1.70%
Reason given: Viral Disease (CMS); Gill Health Related
Viral Disease (CMS); Gill Health Related
Targeted Harvests; FW wk 30
FHI to monitor.
Date:
31/07/23-06/08/23
Mortality:
5,604
Mortality Rate:
2.94%
Reason given: Gill Health Related
Gill Health Related
Site contacted for further information, Gill health related issues from a recent enviromental insult. Site freshwater treating week 33, targeted harvesting is currently underway. Mortality has increased to 10% in week 32.
FHI to monitor.
Date:
07/08/23-13/08/23
Mortality:
21,524
Mortality Rate:
12.58%
Reason given: Gill Health Related
Gill Health Related
Targeted Harvests; FW week 33.
6th consecutive report above threshold. Contacted business correspondant - estimated mortality for Wk 33 is 12.8%. Inspection scheduled. FHI to monitor.
Date:
14/08/23-20/08/23
Mortality:
13,609
Mortality Rate:
12.80%
Reason given: Gill Health Related
Gill Health Related
Harvests; FW week 33
Continuation of mortality event site inspection has been scheduled, FHI to monitor. Mortilities have continued to be elevated in week 34 (7%) but was fallowed by the end of the week.
Date:
21/08/23-27/08/23
Mortality:
5,921
Mortality Rate:
7.07%
Reason given: Gill Health Related
Gill Health Related
Harvests - Site fallowed wk 34
Site fallow

Source

Inspection reports

Case Number: 2022-0162


Download Remote inspection carried out 19/05/2022.
The site experiences a challenge with Caligus during the summer, managed with Slice at input and freshwater treatments are now also available since last summer. Adult female counts are currently 0 but the site has been above 2 in previous cycles - this data was shared with the FHI at the time.
During the site inspection no moribund or dead fish were observed, with the main population of fish in the pens looking healthy and with a good feeding response. The fish sampled for the VMD also looked healthy internally and externally, with very low numbers of Caligus observed. The site is currently treating with Slice to address this issue. [Original PDF]

Case Number: 2024-0189


Download Came onto site with frunculosis from the hatchery.
Health report - 21/05/2024 - Frunculosis is in the background at lower levels (considered inactive)
Mortality: Peaks - 2022 - Week 46 3.2% (18,598) due to freshwater treatment, 2023 - Weeks 32 and 33 12.58% and 12.80% just before harvesting due to CMS. New cycle mortality has been low since input - apart from initial input losses.
Treatments: Last cycle freshwater treatments and FLS treatment. This cycle - SLICE 25th April - 2nd May 2024. Syncaine
(active ingredient Tricaine methanesulfonate) for health treatments but going back to using Tricaine once they have used up the supply of Syncaine until fish are 2.5kg. When fish are above 2.5kg the site will then use Optomease.
Lice: Highest this cycle has been 0.05 and last cycle 0.73 adult females. Lice levels this cycle have been 0.01 or below.
During physical inspection of the site no mortality was seen. Fish were observed shoaling and had good feed responses.
Fish for VMD samples were taken from pens 7 and 9 - all fish were clear of lice and appeared healthy both externally and internally. [Original PDF]

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