Mussels (Mytilus sp.) are widespread along the entire coast of Norway. In the last 15 years, the Institute of Marine Research (HI) has received reports that mussels have disappeared from places where shells are usually collected. In 2020, HI developed a method to monitor regional populations of ...

As aquaculture is the fastest growing food production method in the world, there are concerns about the area taken up by the industry. To reduce this, and to deal with the problem of the organic waste produced by the organisms, it has been suggested that it would be advantageous to rear, for...

This risk report provides an overview of the knowledge status regarding various environmental and biological aspects related to Norwegian fish farming in 2022. The report focuses on several key factors: the effects of farmed salmon lice on wild salmon, occurrence of diseases in wild salmon due to...

The report describes data from egg and brood surveys conducted on spawning grounds for cod in Smøla and in Aure municipalities in 2018. The work is under the auspices of the ICOD project (Interactions of aquaculture with cod spawning grounds) where the purpose is to investigate whether the location ...

Infectious salmon anemia (ILA) was diagnosed on farmed salmon (Salmo salar) from a food fish farm in Rogaland in June 2023. The salmon weighed approximately 1,200 grams and had been launched in the summer of 2023. Two weeks after launch, a fish health biologist made a standard routine visit to...

There is a strong desire to move Atlantic salmon aquaculture to more exposed locations in the future - either along the coast or even off-shore. Here the fish may experience much stronger water current conditions compared to traditional sheltered locations. Are salmon able to thrive in these new...

There is a growing interest in cod farming, this time with a domesticated farmed cod that will have characteristics that differ from wild cod. There is a need for an updated knowledge base on the risk of impact on wild cod, especially genetic and ecological interactions and localization in relation ...

This report is an appendix to "Risk associated with mortality in migrating post-smolt salmon as a result of emissions of salmon lice from fish farming " in the Risk Report of Norwegian Fish Farming 2020. The document forms the knowledge base for risk assessors. Salmon lice are a natural parasite...

The use of Skamik version 1.5 was documented during routine mechanical treatment of Atlantic salmon (Salmo salar) at four sites with fish weighing 1,7-4,1 kg. The study was carried out from June - August 2019 and the sea temperature ranged from 11,1-14,7°C. Efficacy against motile stages of sea...

This report presents data from egg and juvenile surveys carried out on spawning grounds for Atlantic cod at Smøla and Aure in Northwest Norway in 2017. The investigation was a part of the ICOD project (Interactions of aquaculture with cod spawning grounds), where the objective is to study potential ...