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Institute of Marine Research

Havforskningsinstituttet Ruse og Garn NALO 2020

Recommended citation:
Rune Nilsen (IMR), Rosa Maria Serra Llinares (IMR), Vegard Ambjørndalen (NINA), Marius Berg (NINA), Gunnar B. Lehmann (NORCE), Astrid Tonstad (NINA), Bengt Finstad (NINA), Ørjan Karlsen (IMR) (2021) Havforskningsinstituttet Ruse og Garn NALO 2020 https://doi.org/10.21335/NMDC-477241498
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Abstract
Sea trout and/or Arctic charr were sampled within each locality with either modified floating traps or floating gillnets. The floating traps have been successfully used for monitoring sea lice on salmonids since approximately 2010. Some variation of the trap exists, but in general it consists of a dense 5 meter deep leading-net fixed to the shore, who leads out to a floating funnel trap with a few chambers. The most common model is described in detail by Barlaup et al. 2013* . The gillnets, exclusively monofilament, vary in mesh size from 17-26 mm between knots. Gillnets are deployed 90 degrees from shoreline in suitable locations. Length and height of the gillnets are respectively 30 and 2,5 m. Traps are checked minimum every day. Gillnets are checked continuously while deployed. Lice counts on sea trout were performed in the field immediately after collection. Fish from traps were anesthetized before sampling (Benzocaine 200 mg/ml diluted by 15-20 ml/100 l water) and released to the sea after recovery. Trout from gillnets were killed. Lice counts were performed with the fish submerged in a white plastic tub (5-10 l) using a strong headlamp (>500 lumen). Counts were performed by personnel with special training in identification of all salmon lice stages. The following 6 lice categories was recorded: copepodite, chalimus 1, chalimus 2, pre-adult, adult male and adult female. Fish length in mm and mass in gram were recorded.
Scientific keywords:
EARTH SCIENCE> BIOLOGICAL CLASSIFICATION> ANIMALS/VERTEBRATES> FISH> RAY-FINNED FISHES> SALMONS/TROUTS
Key words:
Salmon, trout, charr, sea lice
Data downloads
Type Description URL
GET DATA https://ftp.nmdc.no/nmdc/IMR/lakselus/Havforskningsinstituttet_RuseOgGarnNALO-2020.xlsx
58.24325
70.47413
4.9583
30.44557
Entry ID
IMR_NALO_2020
Entry Title
Havforskningsinstituttet Ruse og Garn NALO 2020
Data Set Citation List
Dataset Creator Dataset Title Dataset Release Date Dataset Publisher Dataset DOI Online Resource
Rune Nilsen (IMR), Rosa Maria Serra Llinares (IMR), Vegard Ambjørndalen (NINA), Marius Berg (NINA), Gunnar B. Lehmann (NORCE), Astrid Tonstad (NINA), Bengt Finstad (NINA), Ørjan Karlsen (IMR) Havforskningsinstituttet Ruse og Garn NALO 2020 2021-12-07T00:00:00:00Z Institute of Marine Research 10.21335/NMDC-477241498 http://metadata.nmdc.no/metadata-api/landingpage/1e42d92d552e730f5dc7f7fb42ccc14d
Personnel List
Role First Name Last Name
DIF Author Arnfinn Morvik
Investigator Rune Nilsen
Parameters List
Category Topic Term Variable Level 1 Variable Level 2 Variable Level 3
EARTH SCIENCE BIOLOGICAL CLASSIFICATION ANIMALS/VERTEBRATES FISH RAY-FINNED FISHES SALMONS/TROUTS
ISO Topic Category List
Oceans
Keywords List
Salmon,trout,charr,sea lice
Temporal Coverage
Start Date Stop Date
2020-05-14 2020-07-24
Data Set Progress
Complete
Spatial Coverage
Location List
Location Category Location Type Location Subregion1
Ocean Atlantic Ocean North Atlantic Ocean
Project List
Access Constraints
unrestricted
Originating Center
Institute of Marine Research
Data Center List
Data Center Name Personnel Data Center URL
Institute of Marine Research, Norwegian Marine Data Centre, Norway Institute of Marine Research, Norwegian Marine Data Centre, Norway Datacenter Arnfinn Morvik
NO/IMR Institute of Marine Research Originating institution Rune Nilsen http://www.imr.no
Distribution List
Distribution Media Distribution Format
ftp Microsoft Excel
Reference List
Summary
Sea trout and/or Arctic charr were sampled within each locality with either modified floating traps or floating gillnets. The floating traps have been successfully used for monitoring sea lice on salmonids since approximately 2010. Some variation of the trap exists, but in general it consists of a dense 5 meter deep leading-net fixed to the shore, who leads out to a floating funnel trap with a few chambers. The most common model is described in detail by Barlaup et al. 2013* . The gillnets, exclusively monofilament, vary in mesh size from 17-26 mm between knots. Gillnets are deployed 90 degrees from shoreline in suitable locations. Length and height of the gillnets are respectively 30 and 2,5 m. Traps are checked minimum every day. Gillnets are checked continuously while deployed. Lice counts on sea trout were performed in the field immediately after collection. Fish from traps were anesthetized before sampling (Benzocaine 200 mg/ml diluted by 15-20 ml/100 l water) and released to the sea after recovery. Trout from gillnets were killed. Lice counts were performed with the fish submerged in a white plastic tub (5-10 l) using a strong headlamp (>500 lumen). Counts were performed by personnel with special training in identification of all salmon lice stages. The following 6 lice categories was recorded: copepodite, chalimus 1, chalimus 2, pre-adult, adult male and adult female. Fish length in mm and mass in gram were recorded.
Related URL List
URL Content Type URL
GET DATA https://ftp.nmdc.no/nmdc/IMR/lakselus/Havforskningsinstituttet_RuseOgGarnNALO-2020.xlsx
Originating Metadata Node
Norwegian Marine Datacentre
Metadata Name
CEOS IDN DIF
Metadata Version
9.7.1
DIF Creation Date
2021-12-07T00:00:00:00Z
Use Constraints
CC BY 4.0
boundingboxWKT
POLYGON((30.34557 58.14325,5.0583 58.14325,5.0583 70.57413,30.34557 70.57413,30.34557 58.14325))
1e42d92d552e730f5dc7f7fb42ccc14d.xml
No Spatial coverage