One pathogen strain seems the main culprit in damaging salmonid disease

A distinct strain of the main fungus-like pathogen which causes saprolegniosis — thought to be responsible for around 10% of economic losses in the salmonid industry — looks likely to be responsible for the majority of outbreaks of the disease on Atlantic salmon fish farms.

A Salmon farm on the Scottish west coast

One pathogen strain seems the main culprit in damaging salmonid disease

Sound Science

Daphnia water fleas from the pond

Fishmeal substitute made from zooplankton could boost tilapia growth and health

A feed made from the zooplankton daphnia boosted growth rates of red tilapia fry when used as a partial replacement for fishmeal, but too much daphnia had the opposite effect.

Two Australian farmed Tiger abalone being gently handled

Mollusk farms must prepare for more disease under climate change

Warmer seawater is creating perfect conditions for many mollusk pathogens to thrive, scientists have warned.

sea lice all over pink salmon

Research highlights risks of thermal delousing treatments for unhealthy salmon

Thermal sea lice treatments do not appear to cause increases in pathogens which threaten farmed salmon, but the risk of stress-related mortalities means that fish already suffering from disease should not undergo thermal sea lice treatments, according to Institute of Aquaculture researchers.

Feeding frenzy as rainbow trout eat at the D C Booth Historic N

Yeast could aid shift away from fish-based diets in rainbow trout aquaculture

Torula yeast could be a promising option for inclusion in non-fishmeal feeds, with scientists finding links to production and immune improvements in a study using rainbow trout. 

Abstract background genome research

Advanced genomics data could spark breeding revolution in European aquaculture

New genomics data on six commercially important fish species in Europe could have major implications for breeding programs, but there is work still to be done to realize the benefits.

A large group of fish circling in a gloomy pond, a view from abo

How acoustic technologies are aiding fish health and welfare

Monitoring fish using sound is on the rise in aquaculture, meeting a need to accurately assess the health and welfare of farmed-fish populations in changing environments.

Bacteria Lactococcus, D illustration

Reanalysis shows true identity of bacteria involved in lactococcosis cases

The bacterium Lactococcus petauri has played a more significant role in historical cases of the disease lactococcosis than was previously thought, new research suggests.

Freshwater aquatic zooplankton under microscope view

Understanding plankton threats to salmon requires a mix of old and new technologies

Using both “traditional” microscopy and environmental DNA (eDNA) analysis can help paint a complete picture of plankton threats to salmon aquaculture, according to University of Glasgow research.