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The Salmon Ledger
NOEN

Mjøsund Vest

Site 37057 · Ibestad municipality · Production area 10, Andøya til Senja

Status unknown: not reported in week 39Operated by Salmar Oppdrett AS · group SalMar
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unknownAdult female lice per fishNo count in week 39. Latest: 0.26 in week 31, 2026Week 39, 2026 · Norwegian Food Safety Authority · updated 01 Oct 2026
1Weeks above the limit in 2026of 31 weeks with a countCalculated by the Salmon Ledger · Norwegian Food Safety Authority · updated 01 Oct 2026
4Lice treatments in 2026Latest: Mechanical delousing, week 30, 20262026 · Norwegian Food Safety Authority · updated 01 Oct 2026
1Active disease casesILA, confirmed 06 Aug 2026Register since 26 Nov 2024 · Norwegian Food Safety Authority · updated 01 Oct 2026
18Wellboat visits in 2026by 1 vessel · latest 13 Aug 2026Derived from AIS · Norwegian Coastal Administration (AIS) · updated 01 Oct 2026
1Escapes reported1 salmon, March 2022Since 2006 · Directorate of Fisheries · updated 01 Oct 2026

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

Source: Norwegian Food Safety Authority, weekly lice counts reported by the companies · Limit: Regulation on sea lice control § 8 · Updated 01 Oct 2026
Show as table
Adult female lice per fish per week, 2026
WeekAdult female lice per fishLice limitStatus
10.130.5Below the limit
20.310.5Below the limit
30.380.5Below the limit
40.380.5Below the limit
50.300.5Below the limit
60.320.5Below the limit
70.200.5Below the limit
80.280.5Below the limit
90.280.5Below the limit
100.310.5Below the limit
110.140.5Below the limit
120.110.5Below the limit
130.120.5Below the limit
140.110.5Below the limit
150.020.5Below the limit
160.040.5Below the limit
170.050.5Below the limit
180.050.5Below the limit
190.080.5Below the limit
200.080.5Below the limit
210.120.2Below the limit
220.020.2Below the limit
230.030.2Below the limit
240.030.2Below the limit
250.100.2Below the limit
260.200.2Above the limit
270.250.5Below the limit
280.060.5Below the limit
290.330.5Below the limit
300.080.5Below the limit
310.260.5Below the limit
32unknown0.5Reported without a count
33unknown0.5Reported without a count
34unknown0.5Not reported
35unknown0.5Not reported
36unknown0.5Not reported
37unknown0.5Not reported
38unknown0.5Not reported
39unknown0.5Not reported

Earlier years

20251 of 28 weeks with a count above the limit
Source: Norwegian Food Safety Authority, weekly lice counts reported by the companies · Limit: Regulation on sea lice control § 8 · Updated 01 Oct 2026
Show as table
Adult female lice per fish per week, 2025
WeekAdult female lice per fishLice limitStatus
1unknown0.5Not reported
2unknown0.5Not reported
3unknown0.5Not reported
4unknown0.5Not reported
5unknown0.5Not reported
6unknown0.5Not reported
7unknown0.5Not reported
8unknown0.5Not reported
9unknown0.5Not reported
10unknown0.5Not reported
11unknown0.5Not reported
12unknown0.5Not reported
13unknown0.5Not reported
14unknown0.5Not reported
15unknown0.5Not reported
16unknown0.5Not reported
17unknown0.5Not reported
18unknown0.5Not reported
19unknown0.5Not reported
20unknown0.5Not reported
21unknown0.2Not reported
22unknown0.2Not reported
23unknown0.2Not reported
24unknown0.2Not reported
250.000.2Below the limit
260.000.2Below the limit
270.000.5Below the limit
280.000.5Below the limit
290.000.5Below the limit
300.000.5Below the limit
310.030.5Below the limit
320.030.5Below the limit
330.000.5Below the limit
340.030.5Below the limit
350.070.5Below the limit
360.150.5Below the limit
370.290.5Below the limit
380.950.5Above the limit
390.010.5Below the limit
400.050.5Below the limit
410.010.5Below the limit
420.080.5Below the limit
430.050.5Below the limit
440.200.5Below the limit
450.170.5Below the limit
460.020.5Below the limit
470.150.5Below the limit
480.140.5Below the limit
490.180.5Below the limit
500.150.5Below the limit
510.100.5Below the limit
520.250.5Below the limit
20246 of 44 weeks with a count above the limit
Source: Norwegian Food Safety Authority, weekly lice counts reported by the companies · Limit: Regulation on sea lice control § 8 · Updated 01 Oct 2026
Show as table
Adult female lice per fish per week, 2024
WeekAdult female lice per fishLice limitStatus
10.030.5Below the limit
20.050.5Below the limit
30.040.5Below the limit
40.070.5Below the limit
50.060.5Below the limit
60.050.5Below the limit
70.140.5Below the limit
80.020.5Below the limit
90.080.5Below the limit
100.030.5Below the limit
110.080.5Below the limit
120.070.5Below the limit
130.060.5Below the limit
140.050.5Below the limit
150.060.5Below the limit
160.030.5Below the limit
170.020.5Below the limit
180.080.5Below the limit
190.070.5Below the limit
200.100.5Below the limit
210.080.2Below the limit
220.090.2Below the limit
230.050.2Below the limit
240.080.2Below the limit
250.070.2Below the limit
260.080.2Below the limit
270.130.5Below the limit
280.170.5Below the limit
290.210.5Below the limit
300.410.5Near the limit
310.100.5Below the limit
320.110.5Below the limit
330.630.5Above the limit
340.430.5Near the limit
352.620.5Above the limit
362.280.5Above the limit
370.200.5Below the limit
380.360.5Below the limit
391.060.5Above the limit
408.940.5Above the limit
411.620.5Above the limit
42unknown0.5Not reported
430.000.5Below the limit
440.000.5Below the limit
45unknown0.5Not reported
460.000.5Below the limit
47unknown0.5Not reported
48unknown0.5Not reported
49unknown0.5Not reported
50unknown0.5Not reported
51unknown0.5Not reported
52unknown0.5Not reported
20230 of 13 weeks with a count above the limit (data from week 40)
Source: Norwegian Food Safety Authority, weekly lice counts reported by the companies · Limit: Regulation on sea lice control § 8 · Updated 01 Oct 2026
Show as table
Adult female lice per fish per week, 2023
WeekAdult female lice per fishLice limitStatus
400.040.5Below the limit
410.000.5Below the limit
420.000.5Below the limit
430.050.5Below the limit
440.020.5Below the limit
450.030.5Below the limit
460.030.5Below the limit
470.030.5Below the limit
480.050.5Below the limit
490.070.5Below the limit
500.100.5Below the limit
510.110.5Below the limit
520.130.5Below the limit

Treatments

Norwegian Food Safety Authority
  • Week 30, 2026
    Mechanical delousing4 pens
  • Week 28, 2026
    Mechanical delousing5 pens
  • Week 23, 2026
    Mechanical delousing4 pens
  • Week 22, 2026
    Mechanical delousing2 pens
Show all 21
  • Week 46, 2025
    Mechanical delousing3 pens
  • Week 45, 2025
    Mechanical delousing3 pens
  • Week 39, 2025
    Thermal delousingWhole site
  • Week 37, 2025
    Medicinal feedWhole site · Emamectin benzoat
  • Week 41, 2024
    Thermal delousing5 pens
  • Week 38, 2024
    Medicinal bath, Freshwater treatment3 pens · Azametifos
  • Week 37, 2024
    Medicinal bath7 pens · Azamethiphos
  • Week 34, 2024
    Thermal delousing1 pen
  • Week 31, 2024
    Freshwater treatment7 pens
  • Week 30, 2024
    Freshwater treatment3 pens
  • Week 29, 2024
    Freshwater treatment1 pen
  • Week 24, 2024
    Thermal delousing4 pens
  • Week 9, 2024
    Medicinal feed2 pens · Florfenicol
  • Week 8, 2024
    Medicinal feed2 pens · Florfenicol
  • Week 1, 2024
    Thermal delousing7 pens
  • Week 47, 2023
    Medicinal feed3 pens · Emamektin
  • Week 46, 2023
    Medicinal feed2 pens · Emamektin

Disease

Norwegian Food Safety Authority

Escapes

Directorate of Fisheries
  • 22 Mar 2022
    1 salmon escapedCause: Under lusetelling falt slangen som fører fisken tilbake til merden ned slik at 1 stk laks rømte. · recaptured 1 · Directorate of Fisheries

Wellboat visits

18 visits in 2026

Visits 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.

ArrivalVesselPrevious farm (14 days)Duration
13 Aug 2026Ro SenjaKlubben8 h 10 min
12 Aug 2026Ro SenjaKlubben4 h 4 min
11 Aug 2026Ro SenjaKlubben2 h 3 min
10 Aug 2026Ro SenjaKlubben1 h 26 min
06 Aug 2026Ro SenjaKlubben2 h 21 min
05 Aug 2026Ro SenjaKlubben2 h 7 min
04 Aug 2026Ro SenjaKlubben4 h 22 min
03 Aug 2026Ro SenjaKlubben3 h 40 min
20 Jul 2026Ro SenjaSkogshamn51 h 49 min
08 Jul 2026Ro SenjaBjørga4 h 58 min
05 Jun 2026Ro SenjaKlubben10 h 24 min
05 Jun 2026Ro SenjaKlubben3 h 40 min
Show 63 older visits
ArrivalVesselPrevious farm (14 days)Duration
04 Jun 2026Ro SenjaKlubben2 h 3 min
04 Jun 2026Ro SenjaKlubben2 h 0 min
04 Jun 2026Ro SenjaKlubben2 h 52 min
28 May 2026Ro SenjaKlubben3 h 10 min
27 May 2026Ro SenjaKlubben7 h 5 min
27 May 2026Ro SenjaKlubben4 h 32 min
19 Dec 2025TonnyKalvhylla47 min
10 Nov 2025Ro ArcticSelsøyvær13 h 3 min
25 Sep 2025Ro ArcticKlubben9 h 54 min
24 Sep 2025Ro ArcticKlubben7 h 32 min
06 Jul 2025Ronja Aurorano other farm9 h 7 min
05 Jul 2025Ronja Aurorano other farm38 min
17 Jun 2025Ronja AuroraKokelv3 h 21 min
02 Nov 2024Ro SpiritKlubben1 h 28 min
30 Oct 2024Ro SpiritSkjervøy3 h 41 min
26 Oct 2024Ro SailorBakfjorden1 h 50 min
21 Oct 2024Ro SpiritKlubben2 h 22 min
17 Oct 2024Ro SpiritKlubben3 h 47 min
14 Oct 2024Ro SpiritHolmen3 h 56 min
11 Oct 2024Ro FortuneKorsvika5 h 24 min
10 Oct 2024Ro FortuneKorsvika14 h 17 min
09 Oct 2024Ro FortuneKorsvika13 h 14 min
09 Oct 2024Ro SailorHolmen1 h 57 min
03 Oct 2024Ro SailorHolmen3 h 9 min
29 Sep 2024RohavVassvika1 h 49 min
23 Sep 2024Ro SailorNæringsbukta2 h 53 min
17 Sep 2024Ro FortuneUløybukt2 h 40 min
17 Sep 2024Ro FortuneUløybukt1 h 40 min
16 Sep 2024Ro FortuneUløybukt1 h 45 min
16 Sep 2024Ro FortuneUløybukt2 h 29 min
16 Sep 2024Ro FortuneUløybukt5 h 27 min
15 Sep 2024Ro FortuneUløybukt3 h 31 min
15 Sep 2024Ro FortuneUløybukt3 h 52 min
15 Sep 2024Ro FortuneUløybukt3 h 16 min
14 Sep 2024Ro FortuneUløybukt2 h 48 min
14 Sep 2024Ro FortuneUløybukt3 h 0 min
14 Sep 2024Ro FortuneUløybukt1 h 4 min
09 Sep 2024Ro SailorKlubben16 h 29 min
09 Sep 2024Ro SailorKlubben2 h 40 min
03 Sep 2024RobasVærnes55 min
03 Sep 2024RobasSkauholmen2 h 0 min
23 Aug 2024Ro FortuneØrnes12 h 48 min
22 Aug 2024Ro FortuneØrnes17 h 2 min
21 Aug 2024Ro FortuneØrnes14 h 50 min
03 Aug 2024GrotangerJennskarbotn15 h 50 min
02 Aug 2024GrotangerJennskarbotn15 h 48 min
01 Aug 2024GrotangerJennskarbotn1 h 57 min
31 Jul 2024GrotangerJennskarbotn15 h 27 min
29 Jul 2024GrotangerJennskarbotn2 h 52 min
28 Jul 2024GrotangerJennskarbotn7 h 39 min
27 Jul 2024GrotangerJennskarbotn1 h 48 min
24 Jul 2024GrotangerKråkøy Slakteri1 h 46 min
23 Jul 2024GrotangerKråkøy Slakteri11 h 34 min
22 Jul 2024GrotangerKråkøy Slakteri19 h 49 min
21 Jul 2024GrotangerKråkøy Slakteri19 h 27 min
20 Jul 2024GrotangerKråkøy Slakteri18 h 4 min
18 Jul 2024GrotangerKråkøy Slakteri11 h 8 min
13 Jun 2024Ro FortuneBarbogen6 h 46 min
13 Jun 2024Ro FortuneBarbogen4 h 5 min
10 Jun 2024Ro FortuneBarbogen1 h 54 min
10 Jun 2024Ro FortuneVengsøy3 h 24 min
04 Jan 2024Ro FortuneFellesholmen13 h 31 min
02 Jan 2024Ro FortuneFellesholmen27 h 36 min

Source: Norwegian Coastal Administration (AIS) · calculated by the Salmon Ledger · updated 01 Oct 2026

Who has reported

The companies that have submitted lice counts for this site, with the first and last week.

CompanyFromTo
Wilsgård Fiskeoppdrett ASWeek 40, 2023Week 52, 2023
Wilsgård Farming ASWeek 1, 2024Week 44, 2025
Salmar Oppdrett ASWeek 45, 2025Week 33, 2026

Source: Norwegian Food Safety Authority (organisation number on each lice report)

Licences

Site MAB: 5,670 tonnes
LicenceTypeCapacityHolder
T TK 0005Kommersiell / matfisk-grønn konvertertSalmon, Rainbow trout, Trout974 tSalmar Oppdrett AS
T TK 0020Kommersiell / matfisk-grønn konvertertSalmon, Rainbow trout, Trout974 tSalmar Oppdrett AS

Source: Directorate of Fisheries, aquaculture register · updated 01 Oct 2026