Aursøysva

Site 12357 · Frøya municipality · Production area 6, Nordmøre og Sør-Trøndelag

Below the lice limit, week 39Operated by Erviks Laks Og Ørret AS · group unknown

0.28Adult female lice per fishLimit 0.50 · below the limitWeek 39, 2026 · Norwegian Food Safety Authority · updated 01 Oct 2026

0Weeks above the limit in 2026of 39 weeks with a countCalculated by the Salmon Ledger · Norwegian Food Safety Authority · updated 01 Oct 2026

8Lice treatments in 2026Latest: Mechanical delousing, week 39, 20262026 · Norwegian Food Safety Authority · updated 01 Oct 2026

0Active disease casesNone active · 1 earlierRegister since 26 Nov 2024 · Norwegian Food Safety Authority · updated 01 Oct 2026

8Wellboat visits in 2026by 4 different vessels · latest 31 Aug 2026Derived from AIS · Norwegian Coastal Administration (AIS) · updated 01 Oct 2026

1Escapes reportedNumber unknown, July 2024Since 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 16–21 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

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Adult female lice per fish per week, 2026
Week	Adult female lice per fish	Lice limit	Status
1	0.00	0.5	Below the limit
2	0.00	0.5	Below the limit
3	0.00	0.5	Below the limit
4	0.00	0.5	Below the limit
5	0.01	0.5	Below the limit
6	0.05	0.5	Below the limit
7	0.10	0.5	Below the limit
8	0.10	0.5	Below the limit
9	0.10	0.5	Below the limit
10	0.15	0.5	Below the limit
11	0.10	0.5	Below the limit
12	0.09	0.5	Below the limit
13	0.17	0.5	Below the limit
14	0.15	0.5	Below the limit
15	0.08	0.5	Below the limit
16	0.09	0.2	Below the limit
17	0.10	0.2	Below the limit
18	0.18	0.2	Near the limit
19	0.17	0.2	Near the limit
20	0.17	0.2	Near the limit
21	0.18	0.2	Near the limit
22	0.22	0.5	Below the limit
23	0.25	0.5	Below the limit
24	0.18	0.5	Below the limit
25	0.28	0.5	Below the limit
26	0.32	0.5	Below the limit
27	0.25	0.5	Below the limit
28	0.28	0.5	Below the limit
29	0.22	0.5	Below the limit
30	0.23	0.5	Below the limit
31	0.28	0.5	Below the limit
32	0.31	0.5	Below the limit
33	0.38	0.5	Below the limit
34	0.32	0.5	Below the limit
35	0.38	0.5	Below the limit
36	0.34	0.5	Below the limit
37	0.35	0.5	Below the limit
38	0.38	0.5	Below the limit
39	0.28	0.5	Below the limit

Earlier years

20251 of 36 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

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Adult female lice per fish per week, 2025
Week	Adult female lice per fish	Lice limit	Status
1	0.10	0.5	Below the limit
2	0.12	0.5	Below the limit
3	0.15	0.5	Below the limit
4	0.23	0.5	Below the limit
5	0.28	0.5	Below the limit
6	0.31	0.5	Below the limit
7	0.34	0.5	Below the limit
8	0.31	0.5	Below the limit
9	0.35	0.5	Below the limit
10	0.38	0.5	Below the limit
11	0.42	0.5	Near the limit
12	0.44	0.5	Near the limit
13	0.46	0.5	Near the limit
14	0.38	0.5	Below the limit
15	0.28	0.5	Below the limit
16	0.17	0.2	Near the limit
17	0.18	0.2	Near the limit
18	0.18	0.2	Near the limit
19	0.15	0.2	Below the limit
20	0.17	0.2	Near the limit
21	0.19	0.2	Near the limit
22	0.29	0.5	Below the limit
23	0.31	0.5	Below the limit
24	0.34	0.5	Below the limit
25	0.38	0.5	Below the limit
26	0.42	0.5	Near the limit
27	0.46	0.5	Near the limit
28	0.39	0.5	Below the limit
29	0.05	0.5	Below the limit
30	0.30	0.5	Below the limit
31	0.45	0.5	Near the limit
32	0.48	0.5	Near the limit
33	0.75	0.5	Above the limit
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
40	unknown	0.5	Not reported
41	unknown	0.5	Not reported
42	unknown	0.5	Not reported
43	unknown	0.5	Not reported
44	unknown	0.5	Not reported
45	unknown	0.5	Not reported
46	unknown	0.5	Not reported
47	unknown	0.5	Not reported
48	unknown	0.5	Not reported
49	unknown	0.5	Not reported
50	0.00	0.5	Below the limit
51	0.00	0.5	Below the limit
52	0.00	0.5	Below the limit

20242 of 51 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

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Adult female lice per fish per week, 2024
Week	Adult female lice per fish	Lice limit	Status
1	0.00	0.5	Below the limit
2	0.00	0.5	Below the limit
3	0.00	0.5	Below the limit
4	0.00	0.5	Below the limit
5	0.00	0.5	Below the limit
6	0.00	0.5	Below the limit
7	0.00	0.5	Below the limit
8	0.00	0.5	Below the limit
9	0.02	0.5	Below the limit
10	0.00	0.5	Below the limit
11	0.03	0.5	Below the limit
12	0.07	0.5	Below the limit
13	0.07	0.5	Below the limit
14	0.10	0.5	Below the limit
15	0.07	0.5	Below the limit
16	0.03	0.2	Below the limit
17	0.04	0.2	Below the limit
18	0.06	0.2	Below the limit
19	0.04	0.2	Below the limit
20	0.03	0.2	Below the limit
21	0.10	0.2	Below the limit
22	0.14	0.5	Below the limit
23	0.18	0.5	Below the limit
24	0.27	0.5	Below the limit
25	0.19	0.5	Below the limit
26	0.23	0.5	Below the limit
27	0.28	0.5	Below the limit
28	0.21	0.5	Below the limit
29	0.19	0.5	Below the limit
30	0.25	0.5	Below the limit
31	0.28	0.5	Below the limit
32	0.32	0.5	Below the limit
33	0.27	0.5	Below the limit
34	0.42	0.5	Near the limit
35	1.05	0.5	Above the limit
36	0.36	0.5	Below the limit
37	0.42	0.5	Near the limit
38	0.78	0.5	Above the limit
39	0.42	0.5	Near the limit
40	unknown	0.5	Not reported
41	0.38	0.5	Below the limit
42	0.42	0.5	Near the limit
43	0.38	0.5	Below the limit
44	0.35	0.5	Below the limit
45	0.34	0.5	Below the limit
46	0.19	0.5	Below the limit
47	0.10	0.5	Below the limit
48	0.16	0.5	Below the limit
49	0.10	0.5	Below the limit
50	0.14	0.5	Below the limit
51	0.16	0.5	Below the limit
52	0.08	0.5	Below the limit

20230 of 1 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

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Adult female lice per fish per week, 2023
Week	Adult female lice per fish	Lice limit	Status
40	unknown	0.5	Not reported
41	unknown	0.5	Not reported
42	unknown	0.5	Not reported
43	unknown	0.5	Not reported
44	unknown	0.5	Not reported
45	unknown	0.5	Not reported
46	unknown	0.5	Not reported
47	unknown	0.5	Not reported
48	unknown	0.5	Not reported
49	unknown	0.5	Not reported
50	unknown	0.5	Not reported
51	unknown	0.5	Not reported
52	0.00	0.5	Below the limit

Treatments

Norwegian Food Safety Authority

Week 39, 2026
Mechanical delousing1 pen
Week 37, 2026
Mechanical delousing2 pens
Week 32, 2026
Mechanical delousing1 pen
Week 29, 2026
Thermal delousing, Freshwater treatment2 pens

Show all 18

Week 28, 2026
Mechanical delousing, Thermal delousing10 pens
Week 25, 2026
Mechanical delousing2 pens
Week 24, 2026
Mechanical delousing4 pens
Week 29, 2025
Mechanical delousingWhole site
Week 16, 2025
Mechanical delousing2 pens
Week 15, 2025
Mechanical delousing3 pens
Week 41, 2024
Mechanical delousing2 pens
Week 39, 2024
Mechanical delousing1 pen
Week 37, 2024
Mechanical delousing2 pens
Week 36, 2024
Mechanical delousing8 pens
Week 30, 2024
Mechanical delousing5 pens
Week 28, 2024
Mechanical delousing4 pens
Week 25, 2024
Mechanical delousing3 pens
Week 13, 2024
Medicinal feedWhole site · Emamectin benzoat

Disease

Norwegian Food Safety Authority

01 Dec 2025
Pancreas disease (PD): closedSubtype SAV2 · started 30 Oct 2024 · Norwegian Food Safety Authority

Escapes

Directorate of Fisheries

26 Jul 2024
Escape of salmon, number unknownDirectorate of Fisheries

Wellboat visits

8 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.

Arrival	Vessel	Previous farm (14 days)	Duration
31 Aug 2026	Froy Odin	Nordskag	1 h 19 min
17 Jul 2026	Froy Saga	Bremnessvaet	11 h 55 min
12 Jul 2026	Njord Kya	Ulvan	3 h 0 min
11 Jul 2026	Njord Kya	Ulvan	11 h 59 min
19 Jun 2026	Froy Saga	Raskjæret	9 h 0 min
15 May 2026	Viknatrans	Raskjæret	2 h 26 min
15 May 2026	Viknatrans	Raskjæret	2 h 1 min
09 Mar 2026	Viknatrans	Raskjæret	3 h 22 min
09 Dec 2025	Viknatrans	Lamøya	2 h 30 min
08 Dec 2025	Viknatrans	Lamøya	40 min
08 Dec 2025	Viknatrans	Lamøya	3 h 42 min
08 Jul 2025	Froy Odin	Nordskag	1 h 32 min

Show 15 older visits

Arrival	Vessel	Previous farm (14 days)	Duration
06 Jul 2025	Froy Odin	Nordskag	1 h 34 min
23 Jun 2025	Froy Odin	Nordskag	2 h 2 min
22 Jun 2025	Froy Odin	Nordskag	1 h 54 min
28 Mar 2025	Ronja Princess	Nordskag	2 h 8 min
12 Jan 2025	Froy Odin	Nordskag	2 h 47 min
23 Nov 2024	Kristiansund	Omsøyholman	10 h 35 min
23 Nov 2024	Froey Viking	Omsøyholman	8 h 55 min
25 Oct 2024	Langsund	Rauodden	49 min
25 Jul 2024	Kristiansund	Vassgåsholmen	15 h 51 min
22 Jul 2024	Ro Fortune	Raskjæret	3 h 23 min
08 Jun 2024	Viknatrans	Or	45 min
07 Jun 2024	Viknatrans	Or	1 h 16 min
19 Mar 2024	Viknatrans	Raskjæret	1 h 8 min
05 Jan 2024	Viknatrans	no other farm	9 h 43 min
04 Jan 2024	Viknatrans	no other farm	2 h 17 min

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

Licences

Site MAB: 2,860 tonnes

Licence	Type	Capacity	Holder
ST F 0004	Kommersiell / matfiskSalmon, Rainbow trout, Trout	1,864 t	Erviks Laks Og Ørret AS
ST F 0053	Kommersiell / matfiskSalmon, Rainbow trout, Trout	788 t	Erviks Laks Og Ørret AS
ST F 0063	Kommersiell / matfiskSalmon, Rainbow trout, Trout	788 t	Erviks Laks Og Ørret AS

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