SOUND SCIENCE

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.

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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.

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Simulation offers insight into emerging-disease spread on salmonid farms

A new computer simulation approach may help better understand how emerging diseases could spread across salmonid farms in England and Wales and the best measures to limit their impact.

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New approach could improve understanding of farmed seabream welfare

Analyzing proteins from the skin mucus of gilthead seabream (Sparus aurata) could offer a promising, welfare-friendly route to monitor stress levels of the fish during production cycles.

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Warming climate could mean more-virulent fish viruses, study suggests

Rising temperatures may increase the risk that viral pathogens pose to farmed seafood species, according to French research.

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Novel sampling reveals microbial changes during gill disease on Irish salmon farm

A non-lethal sampling method combined with cutting-edge molecular analysis has shed new light on microbial interactions in Atlantic salmon gills during a gill disease outbreak.

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Environmental DNA testing could provide early warning of barramundi disease

Sampling DNA from the aquaculture environment could aid early diagnosis of scale drop disease, an emerging and potentially severe viral condition affecting farmed barramundi in Asia.

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Stomach-resistant oral vaccines could offer fish farmers easier vaccine administration

Oral vaccines hold a great deal of promise for fish farmers. Easier and quicker to administer than injected vaccines, they are also potentially suitable for fish that are too small for injection vaccination, including larval stages.

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Molecular testing sheds new light on troublesome microorganism which threatens fish

A new molecular approach has revealed the ubiquitous and opportunistic nature of Saprolegnia parasitica, a fungal-like microorganism that can cause significant disease and economic loss.