Sea lice

New research suggests that using lumpfish or ballan wrasse to combat sea lice in offshore fish farms isn’t workable – the strong currents and extreme weather conditions leave them at risk of exhaustion and injury.

Starfish, an innovative closed-containment salmon farming system, has now been installed in a Norwegian fjord and is due to be stocked later in the year.

Lower stocking densities in salmon farms can lead to greater levels of sea lice infestation per fish, according to a new study.

Sea lice averages for the Scottish farmed salmon sector were 0.52 adult female lice per salmon during 2020 – the second lowest level on record.

A novel means to assess sea lice levels is set to be trialled in Scotland in a project supported by the UK Seafood Innovation Fund.

The offspring of salmon that have been bred to be more resistant to sea lice may not be so resistant in warmer waters, according to new research by Nofima.

Different families of lumpfish show marked differences in lice grazing, cataract prevalence and size, pointing to the possibility of breeding fish that are more effective at the removal of sea lice from farmed salmon, ac…

A secret species of filter-feeder, placed in novel devices within fish pens, could help to greatly reduce the numbers of parasites, including sea lice, affecting aquaculture operations.

Manual counting of sea lice – an activity that is stressful for fish, time-consuming for farmers and statistically questionable – is no longer mandatory on all salmon farms in Norway, following a landmark ruling.

A new technique that uses a combination of ultrasound and infrared light to remove sea lice from farmed salmon is due to be trialled shortly.

A new project will use the gene editing tool CRISPR-Cas9 to assess why Pacific salmon species are less susceptible to sea lice than Atlantic salmon.

BMK08, a novel treatment against sea lice, is one step closer to commercial launch, having been recommended for approval by the EU’s Committee for Medicinal Products for Veterinary Use (CVMP).

Sea lice may be able to adapt in order to avoid a range of physical barriers that are designed to prevent them from reaching farmed salmon.

New methods for performing freshwater treatments against sea lice and amoebic gill disease (AGD) in salmon farms have been successfully developed and trialled in Ireland.

The efficacy of using lumpfish in net pen salmon farms may have been questioned by a number of academics recently, but a new review offers strong support for their ability to reduce Caligus elongatus numbers on …

A new study confirms that preventing sea louse infestations has key advantages over other strategies and identifies the most promising preventative methods.

The efficacy of a laser-firing device that has been designed to reduce sea lice pressures on farmed salmon has been called into question by new research.

Publicly-available data can be a powerful tool for fish farmers, in particular when it comes to tackling sea lice.

Mowi has recently installed innovative new nets, which are designed to reduce sea lice numbers, at a salmon farm in Argyll.