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‘Snorkel’ cage cuts lice numbers by 80% in trials

‘Snorkel’ cage cuts lice numbers by 80% in trials

Early results of using so-called snorkel cages to farm salmon show that the number of lice found on fish has been reduced by 80%.

Vets fear lice may develop resistance to hot water

Vets fear lice may develop resistance to hot water

Norway’s Veterinary Institute has published its annual report on sea lice drug resistance, where it establishes that the parasites are still largely resistant to the drugs used. They also emphasize that now the development of resistance to hot water must also be monitored.

Top of the class for wrasse

Top of the class for wrasse

Scottish salmon farmer Loch Duart has been praised by Inshore Fisheries and Conservation Authorities in England for its conservative approach to sourcing wrasse for use as cleaner fish, the company has revealed.

SSF rolls out lice skirts after Shetland success

SSF rolls out lice skirts after Shetland success

Scottish Sea Farms is seeing one of its current crops in Shetland outperform all previous years following the introduction of lice skirts - and is now rolling out the skirts to 11 more sites as a result.

Scientists check accuracy of SEPA lice bath model

Scientists check accuracy of SEPA lice bath model

A study to gauge the accuracy of the computer modelling used by industry regulators to predict what happens to the "surface plume" of anti-lice medicines used in bath treatments of farmed salmon is to be carried out by scientists.

Volt prepares for charge against lice

Volt prepares for charge against lice

A boat designed specifically to accommodate delousing machinery is nearing the commissioning stage and is expected to see service in Scotland, as well as Norway.

Multi-measure approach keeps lice numbers low

Multi-measure approach keeps lice numbers low

Researchers looking at keeping sea lice numbers down by using increasing layers of preventative measures have reported interesting results.

Lerøy fined NOK1.4 million after lice savage salmon

Lerøy fined NOK1.4 million after lice savage salmon

Norwegian fish farmer Lerøy, co-owner of Scottish Sea Farms, has been hit with a fine of NOK1.4 million (£127,000) by the Norwegian Food Safety Authority (FSA) for an incident where large amounts of salmon suffered serious lice damage at a farm in central Norway, in 2016.

'More lice larvae inside cages with lice skirts'

'More lice larvae inside cages with lice skirts'

Researchers from a Norwegian lice 'taskforce' are puzzled by field study results that show more lice larvae inside cages with lice skirts than outside them.

Farms 'have impact' on wild fish says study review

Farms 'have impact' on wild fish says study review

Salmon farming increases the number of salmon lice in the sea and lice in the most intensively farmed areas have negatively impacted wild Atlantic salmon and sea trout populations, a review of scientific studies has concluded.

Hired mussel may beat down lice numbers

Hired mussel may beat down lice numbers

It is known that mussels may have properties that help to fight against sea lice, and new research has indicated just how effective the molluscs can be, consuming up to 70% of the parasites in tests.

A lethal bubble bath for sea lice

A lethal bubble bath for sea lice

The use of tiny imploding bubbles can help kill sea lice in contaminated wellboat water before it is discharged into the sea, researchers have concluded.

Colder water eliminates delousing fish deaths in lab

Colder water eliminates delousing fish deaths in lab

Researchers from Norway and Australia have discovered that using colder water can make hydrogen peroxide bath treatment much more gentle for salmon, reducing mortality and improving fish welfare.

New lice bath ‘100% effective’ and pollution-free

New lice bath ‘100% effective’ and pollution-free

Aquaculture health, nutrition, and genetics business Benchmark has announced that a new bath treatment has proved 100% effective against sea lice in commercial trials in Norway.

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