Langholmen

Site 11116 · Gildeskål municipality · Production area 8, Helgeland til Bodø

Below the lice limit, week 39Operated by Gildeskål Forskningsstasjon AS

0.14Adult 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 38 weeks with a countCalculated by the Salmon Ledger · Norwegian Food Safety Authority · updated 01 Oct 2026

21Lice treatments in 2026Latest: Mechanical delousing, week 39, 20262026 · Norwegian Food Safety Authority · updated 01 Oct 2026

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

3Wellboat visits in 2026by 3 different vessels · latest 30 Aug 2026Derived from AIS · Norwegian Coastal Administration (AIS) · updated 01 Oct 2026

2Escapes reported1 salmon, October 2023Since 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

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Adult female lice per fish per week, 2026
Week	Adult female lice per fish	Lice limit	Status
1	0.12	0.5	Below the limit
2	0.14	0.5	Below the limit
3	0.12	0.5	Below the limit
4	0.36	0.5	Below the limit
5	0.41	0.5	Near the limit
6	0.49	0.5	Near the limit
7	0.48	0.5	Near the limit
8	0.10	0.5	Below the limit
9	0.15	0.5	Below the limit
10	0.09	0.5	Below the limit
11	0.36	0.5	Below the limit
12	unknown	0.5	Not reported
13	0.11	0.5	Below the limit
14	0.25	0.5	Below the limit
15	0.10	0.5	Below the limit
16	0.00	0.5	Below the limit
17	0.00	0.5	Below the limit
18	0.01	0.5	Below the limit
19	0.08	0.5	Below the limit
20	0.22	0.5	Below the limit
21	0.01	0.2	Below the limit
22	0.04	0.2	Below the limit
23	0.06	0.2	Below the limit
24	0.17	0.2	Near the limit
25	0.00	0.2	Below the limit
26	0.02	0.2	Below the limit
27	0.04	0.5	Below the limit
28	0.01	0.5	Below the limit
29	0.02	0.5	Below the limit
30	0.18	0.5	Below the limit
31	0.01	0.5	Below the limit
32	0.25	0.5	Below the limit
33	0.30	0.5	Below the limit
34	0.30	0.5	Below the limit
35	0.19	0.5	Below the limit
36	0.08	0.5	Below the limit
37	0.12	0.5	Below the limit
38	0.23	0.5	Below the limit
39	0.14	0.5	Below the limit

Earlier years

20254 of 48 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	0.58	0.5	Above the limit
2	0.57	0.5	Above the limit
3	0.37	0.5	Below the limit
4	0.39	0.5	Below the limit
5	0.19	0.5	Below the limit
6	0.04	0.5	Below the limit
7	0.04	0.5	Below the limit
8	0.11	0.5	Below the limit
9	unknown	0.5	Reported without a count
10	0.10	0.5	Below the limit
11	0.05	0.5	Below the limit
12	unknown	0.5	Reported without a count
13	0.35	0.5	Below the limit
14	unknown	0.5	Not reported
15	0.00	0.5	Below the limit
16	0.01	0.5	Below the limit
17	0.00	0.5	Below the limit
18	0.02	0.5	Below the limit
19	0.03	0.5	Below the limit
20	0.03	0.5	Below the limit
21	0.02	0.2	Below the limit
22	0.01	0.2	Below the limit
23	0.01	0.2	Below the limit
24	0.04	0.2	Below the limit
25	0.07	0.2	Below the limit
26	0.15	0.2	Below the limit
27	0.19	0.5	Below the limit
28	0.07	0.5	Below the limit
29	0.07	0.5	Below the limit
30	0.13	0.5	Below the limit
31	0.17	0.5	Below the limit
32	0.26	0.5	Below the limit
33	0.24	0.5	Below the limit
34	0.27	0.5	Below the limit
35	0.20	0.5	Below the limit
36	0.81	0.5	Above the limit
37	0.37	0.5	Below the limit
38	0.24	0.5	Below the limit
39	0.31	0.5	Below the limit
40	0.31	0.5	Below the limit
41	0.42	0.5	Near the limit
42	0.40	0.5	Near the limit
43	0.23	0.5	Below the limit
44	0.30	0.5	Below the limit
45	0.27	0.5	Below the limit
46	0.65	0.5	Above the limit
47	0.20	0.5	Below the limit
48	0.16	0.5	Below the limit
49	unknown	0.5	Not reported
50	0.08	0.5	Below the limit
51	0.07	0.5	Below the limit
52	0.11	0.5	Below the limit

20241 of 46 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	0.19	0.5	Below the limit
2	0.12	0.5	Below the limit
3	unknown	0.5	Reported without a count
4	0.20	0.5	Below the limit
5	unknown	0.5	Reported without a count
6	0.22	0.5	Below the limit
7	unknown	0.5	Reported without a count
8	0.31	0.5	Below the limit
9	0.18	0.5	Below the limit
10	0.17	0.5	Below the limit
11	unknown	0.5	Reported without a count
12	0.38	0.5	Below the limit
13	unknown	0.5	Reported without a count
14	0.16	0.5	Below the limit
15	0.22	0.5	Below the limit
16	0.20	0.5	Below the limit
17	0.30	0.5	Below the limit
18	0.08	0.5	Below the limit
19	0.05	0.5	Below the limit
20	0.05	0.5	Below the limit
21	0.01	0.2	Below the limit
22	0.07	0.2	Below the limit
23	0.03	0.2	Below the limit
24	0.12	0.2	Below the limit
25	0.02	0.2	Below the limit
26	0.03	0.2	Below the limit
27	0.20	0.5	Below the limit
28	0.16	0.5	Below the limit
29	0.36	0.5	Below the limit
30	0.99	0.5	Above the limit
31	0.42	0.5	Near the limit
32	unknown	0.5	Not reported
33	0.32	0.5	Below the limit
34	0.36	0.5	Below the limit
35	0.33	0.5	Below the limit
36	0.18	0.5	Below the limit
37	0.20	0.5	Below the limit
38	0.42	0.5	Near the limit
39	0.17	0.5	Below the limit
40	0.49	0.5	Near the limit
41	0.43	0.5	Near the limit
42	0.47	0.5	Near the limit
43	0.42	0.5	Near the limit
44	0.49	0.5	Near the limit
45	0.20	0.5	Below the limit
46	0.21	0.5	Below the limit
47	0.16	0.5	Below the limit
48	0.14	0.5	Below the limit
49	0.15	0.5	Below the limit
50	0.19	0.5	Below the limit
51	0.16	0.5	Below the limit
52	0.16	0.5	Below the limit

20230 of 15 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
38	0.45	0.5	Near the limit
39	0.47	0.5	Near the limit
40	0.38	0.5	Below the limit
41	0.31	0.5	Below the limit
42	0.19	0.5	Below the limit
43	0.11	0.5	Below the limit
44	0.08	0.5	Below the limit
45	0.07	0.5	Below the limit
46	0.09	0.5	Below the limit
47	0.15	0.5	Below the limit
48	0.18	0.5	Below the limit
49	0.16	0.5	Below the limit
50	0.19	0.5	Below the limit
51	0.15	0.5	Below the limit
52	0.17	0.5	Below the limit

Treatments

Norwegian Food Safety Authority

Week 39, 2026
Mechanical delousing18 pens
Week 38, 2026
Mechanical delousing12 pens
Week 36, 2026
Mechanical delousing16 pens
Week 35, 2026
Mechanical delousing10 pens

Show all 97

Week 34, 2026
Mechanical delousing20 pens
Week 32, 2026
Medicinal feed32 pens · Emamectin benzoat
Week 31, 2026
Mechanical delousing5 pens
Week 28, 2026
Mechanical delousing1 pen
Week 26, 2026
Medicinal feed27 pens · Emamectin benzoat
Week 25, 2026
Mechanical delousing20 pens
Week 24, 2026
Mechanical delousing3 pens
Week 19, 2026
Mechanical delousing1 pen
Week 16, 2026
Mechanical delousing15 pens
Week 15, 2026
Mechanical delousing1 pen
Week 13, 2026
Mechanical delousing20 pens
Week 9, 2026
Mechanical delousing4 pens
Week 8, 2026
Mechanical delousing25 pens
Week 7, 2026
Mechanical delousing27 pens
Week 4, 2026
Mechanical delousing15 pens
Week 50, 2025
Mechanical delousing15 pens
Week 47, 2025
Mechanical delousing24 pens
Week 46, 2025
Mechanical delousing32 pens
Week 45, 2025
Mechanical delousing12 pens
Week 44, 2025
Mechanical delousing16 pens
Week 43, 2025
Mechanical delousing18 pens
Week 42, 2025
Mechanical delousing12 pens
Week 41, 2025
Mechanical delousing12 pens
Week 40, 2025
Mechanical delousing28 pens
Week 39, 2025
Mechanical delousing23 pens
Week 38, 2025
Mechanical delousing16 pens
Week 37, 2025
Mechanical delousing27 pens
Week 36, 2025
Mechanical delousing24 pens
Week 34, 2025
Mechanical delousing22 pens
Week 33, 2025
Mechanical delousing15 pens
Week 32, 2025
Mechanical delousing16 pens
Week 30, 2025
Mechanical delousing4 pens
Week 29, 2025
Mechanical delousing4 pens
Week 28, 2025
Mechanical delousing4 pens
Week 27, 2025
Mechanical delousing4 pens
Week 26, 2025
Mechanical delousing12 pens
Week 22, 2025
Thermal delousing2 pens
Week 19, 2025
Mechanical delousing16 pens
Week 17, 2025
Mechanical delousing16 pens
Week 15, 2025
Mechanical delousing21 pens
Week 13, 2025
Mechanical delousing12 pens
Week 11, 2025
Mechanical delousing16 pens
Week 10, 2025
Mechanical delousing16 pens
Week 6, 2025
Mechanical delousing16 pens
Week 5, 2025
Mechanical delousing24 pens
Week 4, 2025
Mechanical delousing10 pens
Week 3, 2025
Mechanical delousing1 pen
Week 2, 2025
Thermal delousing1 pen
Week 51, 2024
Mechanical delousing16 pens
Week 50, 2024
Mechanical delousing13 pens
Week 49, 2024
Mechanical delousing12 pens
Week 48, 2024
Mechanical delousing20 pens
Week 47, 2024
Mechanical delousing16 pens
Week 46, 2024
Mechanical delousing4 pens
Week 45, 2024
Mechanical delousing12 pens
Week 44, 2024
Mechanical delousing2 pens
Week 43, 2024
Mechanical delousing1 pen
Week 42, 2024
Mechanical delousing1 pen
Week 41, 2024
Mechanical delousing17 pens
Week 40, 2024
Mechanical delousing17 pens
Week 39, 2024
Mechanical delousing4 pens
Week 38, 2024
Mechanical delousing16 pens
Week 37, 2024
Mechanical delousing20 pens
Week 36, 2024
Mechanical delousing16 pens
Week 35, 2024
Mechanical delousing2 pens
Week 33, 2024
Medicinal feed33 pens · Emamectin benzoat
Week 31, 2024
Medicinal feed, Mechanical delousing23 pens · Emamectin benzoat
Week 30, 2024
Mechanical delousing16 pens
Week 29, 2024
Mechanical delousing6 pens
Week 27, 2024
Mechanical delousing15 pens
Week 23, 2024
Mechanical delousing12 pens
Week 20, 2024
Mechanical delousing20 pens
Week 19, 2024
Mechanical delousing14 pens
Week 18, 2024
Mechanical delousing24 pens
Week 17, 2024
Mechanical delousing24 pens
Week 16, 2024
Mechanical delousing16 pens
Week 14, 2024
Medicinal feed1 pen · Emamectin benzoat
Week 13, 2024
Medicinal feed1 pen · Emamectin benzoat
Week 9, 2024
Medicinal feed16 pens · Emamectin benzoat
Week 8, 2024
Medicinal feed16 pens · Emamectin benzoat
Week 4, 2024
Mechanical delousing16 pens
Week 2, 2024
Mechanical delousing20 pens
Week 51, 2023
Medicinal feed, Mechanical delousing34 pens · Emamectin benzoat
Week 50, 2023
Mechanical delousing12 pens
Week 49, 2023
Mechanical delousing12 pens
Week 48, 2023
Mechanical delousing16 pens
Week 47, 2023
Mechanical delousing24 pens
Week 44, 2023
Mechanical delousing12 pens
Week 42, 2023
Medicinal feed8 pens · Emamectin benzoat
Week 41, 2023
Medicinal feed, Mechanical delousing9 pens · Emamectin benzoat
Week 40, 2023
Medicinal feed8 pens · Emamectin benzoat
Week 39, 2023
Mechanical delousing12 pens
Week 38, 2023
Other treatment12 pens · manuell fjerning av lakselus

Disease

Norwegian Food Safety Authority

No cases in the Food Safety Authority's register of notifiable diseases (since 26 Nov 2024).

Escapes

Directorate of Fisheries

20 Oct 2023
1 salmon escapedCause: Under arbeid med not i merd ble hoppenettet senket noe ned, og 1 fisk hoppet ut. · recaptured 1 · Directorate of Fisheries
04 Jul 2017
1 salmon escapedCause: Håndtering · recaptured 1 · Directorate of Fisheries

Wellboat visits

3 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
30 Aug 2026	Steinar Olaisen	Midt Femris	2 h 58 min
18 May 2026	Ronja Havsoy	Storevika	56 min
05 Mar 2026	Faeroeysund	Skauholmen	1 h 13 min
15 Oct 2025	Faeroeysund	Hallsteinhamn I	1 h 4 min
09 Sep 2025	Steinar Olaisen	Oterholmen I	1 h 4 min
29 Jan 2025	Steinar Olaisen	Skauholmen	52 min
12 Jan 2025	Faeroeysund	Skauholmen	1 h 26 min
21 Nov 2024	Faeroeysund	Stigvika	2 h 51 min
11 Feb 2024	Faeroeysund	Skauholmen	47 min

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

Licences

Site MAB: 780 tonnes

Licence	Type	Capacity	Holder
N G 0016	Forskning / matfiskSalmon, Rainbow trout, Trout	520 t	Gildeskål Forskningsstasjon AS
N G 0020	Forskning / matfiskSalmon, Rainbow trout, Trout	780 t	Gildeskål Forskningsstasjon AS
N G 0057	Kommersiell / matfiskSalmon, Rainbow trout, Trout	398 t	Gildeskål Forskningsstasjon AS

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