Average female lice per fish

Source

Salmon Scotland mortality

Source

Cumulative mortality over full production cycle

Quanterness Production cycle end date: Oct 2018
Total losses: 16.7 %

Quanterness Production cycle end date: Aug 2019
Total losses: 7.3 %

Quanterness Production cycle end date: Aug 2020
Total losses: 5.2 %

Quanterness Production cycle end date: Dec 2021
Total losses: 10 %

Source

Inspection reports

Case Number: 2021-0295

Download Smolts came on from Yetts O'Muckart (FS0371) in April 2020.
All mortalities are transferred to Doon Bay in sealed bins where they are collected by a Cooke road lorry and transferred to
Pelagia in Bussy, Shetland where they are ensiled.
Site has had very low mortality since input and fish are reportedly doing very well, with high conversion rates observed across both stocks.
Average lep numbers across the site are extremely low. Caligus numbers have increased slightly in the last few weeks but are not at a level where intervention is deemed necessary. No treatment planned at this time.
Deadhaul harvests are taken to Kirkwall processing plant within the disease management area. No discharge into DMA. No live movements of fish off this site.
Sites within FMA are not fallowed synchronously on a single year class basis, but there is a documented risk assessment for this which was made available during the inspection.
A few moribunds were observed across the site that had a higher than average lice load, however this was not reflective of the whole population which appeared healthy. Moribunds were removed at time of inspection and humanely dispatched. No other clinical signs of disease were observed so fish were not sampled for diagnostics.
Fish sampled for VMD appeared healthy and demonstrated a strong feeding response. [Original PDF]

Case Number: 2023-0033

Download In the current cycle sea lice levels (adult female leps) were elevated on input early treatments appeared to have been successful but since wk 01 2023 where a peak of 4.54 was recorded numbers have remained elevated with week 4 being 3.37 peaks in mortality: 2022 post input wk45 10344 (7.39%) gill health, wk 47 2083 (1.61%) recorded as other, wk 48 8491
(6.66%) recorded as sea lice(post treatment), wk 52 1347 (1.19%)
2023 wk 1 643 (0.56%) wk 2 3582 (3.13%) sea lice (post treatment) and predator, wk 3 1191 (1.07%) sea lice (post treatment) and predator, wk 4 1229 (1.12%) 'other' and predator.
The site only has discharge consent for EXCIS (cypermethrin) however fish were treated with salmosan on a well boat and medicines discharged at the Bay of Ham site which has consent.
Fish transferred From Meil Bay in November and were treated during transfer with FW. 7-11 November for AGD, week 48 treated with thermolicer, week 2 2023 hydrolicer all 8 pens completed, salmosan week 4 2023
Sea lice numbers have been problematic, hydrolicer treatment has initial good clearance however lice reattached post treatment. Salmosan treatment last week is yet to have a post treatment count conducted.
Inspection of stocks was limited due to high winds, pens were inspected from the boat. Fish showed good feed response , the two fish caught for VMD sampling were in good condition with no clinical signs of disease or gross pathology noted. One fish had ~5 adult female leps the other had 0.
Given the elevated sea lice numbers recorded an enhanced sea lice inspection was conducted. Due to the weather, lice counting procedures were demonstrated on the fish removed for sampling . [Original PDF]

Case Number: 2024-0168

Download IDN placed on site as it is located within 1 tidal excursion of site confirmed with clinical BKD - Meil Bay CDN2024002.
Site visit arranged. [Original PDF]

Source