Blomsøråsa
Site 31857 · Alstahaug municipality · Production area 8, Helgeland til Bodø
Status unknown: not reported in week 39Operated by Mowi Seawater Norway AS · group Mowi
unknownAdult female lice per fishNo count in week 39. Latest: 0.00 in week 32, 2026
0Weeks above the limit in 2026of 32 weeks with a count
2Lice treatments in 2026Latest: Mechanical delousing, week 20, 2026
0Active disease casesNone active · 1 earlier
4Wellboat visits in 2026by 2 different vessels · latest 13 Jul 2026
2Escapes reported500 salmon, January 2020
Sea lice against the limit
Weekly average of adult female lice per fish, as reported by the company. For this site the limit is 0.2 in weeks 21–26 and 0.5 for the rest of the year. Hatched weeks have no count and count neither as above nor below.
2026
Show as table
| Week | Adult female lice per fish | Lice limit | Status |
|---|---|---|---|
| 1 | 0.17 | 0.5 | Below the limit |
| 2 | 0.13 | 0.5 | Below the limit |
| 3 | 0.22 | 0.5 | Below the limit |
| 4 | 0.20 | 0.5 | Below the limit |
| 5 | 0.22 | 0.5 | Below the limit |
| 6 | 0.17 | 0.5 | Below the limit |
| 7 | 0.17 | 0.5 | Below the limit |
| 8 | 0.15 | 0.5 | Below the limit |
| 9 | 0.18 | 0.5 | Below the limit |
| 10 | 0.07 | 0.5 | Below the limit |
| 11 | 0.13 | 0.5 | Below the limit |
| 12 | 0.13 | 0.5 | Below the limit |
| 13 | 0.17 | 0.5 | Below the limit |
| 14 | 0.14 | 0.5 | Below the limit |
| 15 | 0.20 | 0.5 | Below the limit |
| 16 | 0.16 | 0.5 | Below the limit |
| 17 | 0.20 | 0.5 | Below the limit |
| 18 | 0.20 | 0.5 | Below the limit |
| 19 | 0.20 | 0.5 | Below the limit |
| 20 | 0.02 | 0.5 | Below the limit |
| 21 | 0.01 | 0.2 | Below the limit |
| 22 | 0.02 | 0.2 | Below the limit |
| 23 | 0.01 | 0.2 | Below the limit |
| 24 | 0.01 | 0.2 | Below the limit |
| 25 | 0.07 | 0.2 | Below the limit |
| 26 | 0.06 | 0.2 | Below the limit |
| 27 | 0.14 | 0.5 | Below the limit |
| 28 | 0.17 | 0.5 | Below the limit |
| 29 | 0.19 | 0.5 | Below the limit |
| 30 | 0.28 | 0.5 | Below the limit |
| 31 | 0.27 | 0.5 | Below the limit |
| 32 | 0.00 | 0.5 | Below the limit |
| 33 | unknown | 0.5 | Not reported |
| 34 | unknown | 0.5 | Not reported |
| 35 | unknown | 0.5 | Not reported |
| 36 | unknown | 0.5 | Not reported |
| 37 | unknown | 0.5 | Not reported |
| 38 | unknown | 0.5 | Not reported |
| 39 | unknown | 0.5 | Not reported |
Earlier years
20250 of 35 weeks with a count above the limit
Show as table
| Week | Adult female lice per fish | Lice limit | Status |
|---|---|---|---|
| 1 | unknown | 0.5 | Not reported |
| 2 | unknown | 0.5 | Not reported |
| 3 | unknown | 0.5 | Not reported |
| 4 | unknown | 0.5 | Not reported |
| 5 | unknown | 0.5 | Not reported |
| 6 | unknown | 0.5 | Not reported |
| 7 | unknown | 0.5 | Not reported |
| 8 | unknown | 0.5 | Not reported |
| 9 | unknown | 0.5 | Not reported |
| 10 | unknown | 0.5 | Not reported |
| 11 | unknown | 0.5 | Not reported |
| 12 | unknown | 0.5 | Not reported |
| 13 | unknown | 0.5 | Not reported |
| 14 | unknown | 0.5 | Not reported |
| 15 | unknown | 0.5 | Not reported |
| 16 | unknown | 0.5 | Not reported |
| 17 | unknown | 0.5 | Not reported |
| 18 | 0.00 | 0.5 | Below the limit |
| 19 | 0.00 | 0.5 | Below the limit |
| 20 | 0.00 | 0.5 | Below the limit |
| 21 | 0.00 | 0.2 | Below the limit |
| 22 | 0.00 | 0.2 | Below the limit |
| 23 | 0.00 | 0.2 | Below the limit |
| 24 | 0.00 | 0.2 | Below the limit |
| 25 | 0.00 | 0.2 | Below the limit |
| 26 | 0.00 | 0.2 | Below the limit |
| 27 | 0.00 | 0.5 | Below the limit |
| 28 | 0.00 | 0.5 | Below the limit |
| 29 | 0.02 | 0.5 | Below the limit |
| 30 | 0.02 | 0.5 | Below the limit |
| 31 | 0.01 | 0.5 | Below the limit |
| 32 | 0.02 | 0.5 | Below the limit |
| 33 | 0.06 | 0.5 | Below the limit |
| 34 | 0.02 | 0.5 | Below the limit |
| 35 | 0.04 | 0.5 | Below the limit |
| 36 | 0.20 | 0.5 | Below the limit |
| 37 | 0.31 | 0.5 | Below the limit |
| 38 | 0.44 | 0.5 | Near the limit |
| 39 | 0.03 | 0.5 | Below the limit |
| 40 | 0.03 | 0.5 | Below the limit |
| 41 | 0.04 | 0.5 | Below the limit |
| 42 | 0.01 | 0.5 | Below the limit |
| 43 | 0.26 | 0.5 | Below the limit |
| 44 | 0.45 | 0.5 | Near the limit |
| 45 | 0.03 | 0.5 | Below the limit |
| 46 | 0.03 | 0.5 | Below the limit |
| 47 | 0.34 | 0.5 | Below the limit |
| 48 | 0.14 | 0.5 | Below the limit |
| 49 | 0.18 | 0.5 | Below the limit |
| 50 | 0.15 | 0.5 | Below the limit |
| 51 | 0.15 | 0.5 | Below the limit |
| 52 | 0.16 | 0.5 | Below the limit |
20230 of 7 weeks with a count above the limit (data from week 40)
Show as table
| Week | Adult female lice per fish | Lice limit | Status |
|---|---|---|---|
| 40 | unknown | 0.5 | Not reported |
| 41 | 0.23 | 0.5 | Below the limit |
| 42 | 0.24 | 0.5 | Below the limit |
| 43 | 0.03 | 0.5 | Below the limit |
| 44 | 0.05 | 0.5 | Below the limit |
| 45 | 0.12 | 0.5 | Below the limit |
| 46 | 0.08 | 0.5 | Below the limit |
| 47 | 0.10 | 0.5 | Below the limit |
| 48 | unknown | 0.5 | Reported without a count |
| 49 | unknown | 0.5 | Reported without a count |
| 50 | unknown | 0.5 | Not reported |
| 51 | unknown | 0.5 | Not reported |
| 52 | unknown | 0.5 | Not reported |
Treatments
Norwegian Food Safety Authority- Week 20, 2026Mechanical delousing3 pens
- Week 19, 2026Mechanical delousing3 pens
- Week 45, 2025Thermal delousingWhole site
- Week 39, 2025Mechanical delousingWhole site
Show all 7
- Week 26, 2025Medicinal feedWhole site · Emamectin benzoat
- Week 25, 2025Medicinal feedWhole site · Emamectin benzoat
- Week 43, 2023Medicinal bathWhole site · Azamethiphos
Disease
Norwegian Food Safety Authority- 24 Nov 2024Pancreas disease (PD): closedSubtype SAV2 · started 16 Nov 2023 · Norwegian Food Safety Authority
Escapes
Directorate of Fisheries- 04 Jan 2020500 salmon escapedrecaptured 1 · Directorate of Fisheries
- 31 Dec 2019Escape of salmon, number unknownCause: Hull oppdaget ved rov-inpseksjon. Dykkere ble sendt ned, hullene tettet, sertifisert sydd. Fremgår av dykkerrapporter. Ikke fare for rømming. · Directorate of Fisheries
Wellboat visits
4 visits in 2026Visits are derived by us from the Coastal Administration's AIS positions: a fish carrier stationary within 500 metres of the farm for at least 30 minutes. The AIS archive lags about 17 days. A visit is not proof of infection.
| Arrival | Vessel | Previous farm (14 days) | Duration |
|---|---|---|---|
| 13 Jul 2026 | Ro North | Hundbergan | 1 h 34 min |
| 09 Jul 2026 | Ro North | Hestøy | 1 h 17 min |
| 10 May 2026 | Ronja Heroy | Stokkasjøen | 17 h 29 min |
| 09 May 2026 | Ronja Heroy | Stokkasjøen | 19 h 41 min |
| 27 Sep 2025 | Ronja Heroy | Geitryggen | 15 h 14 min |
| 26 Sep 2025 | Ronja Heroy | Geitryggen | 14 h 20 min |
| 28 Apr 2025 | Ronja Havsoy | Langskjæran | 5 h 41 min |
| 24 Apr 2025 | Ronja Havsoy | Langskjæran | 3 h 36 min |
Licences
Site MAB: 3,120 tonnes| Licence | Type | Capacity | Holder |
|---|---|---|---|
| N HR 0004 | Kommersiell / matfiskSalmon, Rainbow trout, Trout | 804 t | Mowi Seawater Norway AS |
| N HR 0006 | Kommersiell / matfiskSalmon, Rainbow trout, Trout | 804 t | Mowi Seawater Norway AS |
| N HR 0010 | Kommersiell / matfiskSalmon, Rainbow trout, Trout | 804 t | Mowi Seawater Norway AS |
| N HR 0012 | Kommersiell / matfiskSalmon, Rainbow trout, Trout | 804 t | Mowi Seawater Norway AS |