Water quality

A recent trial demonstrated that growing blue mussels (Mytilus edulis) alongside sugar kelp (Saccharina latissima) can significantly increase seaweed yields and enhance pigment content in the blades – but the benefit could come from improved …

Barely a day goes by without one media outlet or another waxing lyrical over the numerous benefits of seaweeds, and how they are going to save the planet. Some of it may be hype, but there is also much to be said for this sector, which is newly emerging in the…

A side-by-side comparison of conventional and insect-based aquafeed ingredients has found that insect meals and oils come with a larger carbon footprint and require more energy to produce than marine ingredients – but this discrepancy might be short-lived.

Though seaweed operations are diverse – specialising in various species and operating in different economic circumstances – today’s macroalgae practitioners need to stay grounded in science as they work towards their scale and sustainability goals for 2030.

Mark Bowkett, CEO of Aquamonitrix, explains the dangers of elevated nitrogen levels in RAS facilities and why he believes that the company’s novel sensor can help to not only prevent mass mortalities, but also help to improve feed conversion ratios and growth …

Results from an integrated multi-trophic aquaculture (IMTA) project with sea cucumbers and marine finfish show that the system is feasible, but practitioners need to refine their designs to ensure the sea cucumbers thrive.

Results of a new study by researchers at Nofima suggest that peracetic acid can safely be used as a water disinfectant in recirculating aquaculture systems (RAS) that contain salmon parr.

Alaa and Medhat Elokda are producing tilapia and mullet in a high-density RAS facility which they have designed and built themselves.

Perhaps one of the least aquatic forms of aquaculture involves the farming of crocodiles, alligators and caimans. These animals are referred to as semi-aquatic, and their husbandry is in some ways more similar to livestock production than to fish or shellfish …

Adding microalgae T pseudonana (Thalassiosira pseudonana) to culture water can improve overall water quality, suppress vibrio levels and boost growth rates for intensively farmed whiteleg shrimp.

Some salmon producers may keep their cages fully submerged to keep sea lice at bay, but results from a recent trial suggest that while this reduces lice infestations, it is detrimental to salmon welfare and production goals.

Why optimal ionic composition and ratios in low salinity water and diet formulation is vital for the normal physiological functions of Penaeid shrimp.