Category: Aquaculture

Can fisheries benefit from biodiversity and conserve it, too?

Read the full story from Simon Fraser University.

A new study reveals the trade-offs of fish biodiversity — its costs and benefits to mixed-stock fisheries — and points to a potential way to harness the benefits while avoiding costs to fishery performance.

Testing in Nova Scotia confirms algae as substitute for fish oil in salmon farming

Read the full story from the CBC.

New studies out of Nova Scotia show oil made from marine algae grown in tanks can replace wild-caught fish as a key feedstock in salmon farming.

Campaigners call for river, lake and ocean clean-up to secure the future of fish and fisheries

Read the full story at Food Navigator.

They have fed us for millennia and are critical for the food and nutrition security, livelihoods and cultures of hundreds of millions of people across the globe. But today, nearly a third of freshwater fish species are threatened with extinction.

Report reveals ‘hidden cost’ of salmon farming

Read the full story at Food Navigator.

The short-term pursuit of profits by salmon producers is creating significant unaccounted environmental and social costs, which include growing mortality rates, damage to local ecosystems, pressure on wild fish stocks and poor fish welfare, reveals a new report.

Fish farming has a plastic problem

Read the full story at Environmental Health News.

Microplastics in fishmeal are contaminating farmed fish—impacting their health, the nutrition they provide, and leaving consumers potentially exposed.

An aquaculture venture with unprecedented carbon capture goals

Read the full post at The Fish Site.

Kelp Blue is in the process of raising $60 million to establish a series of kelp farms off the coast of Namibia which, by 2050, will be capable of absorbing more CO2 than is produced by the Netherlands each year.

Environmental impacts of pot fishing

Read the full story from the University of Plymouth.

The findings of new research go against previous thinking around the damage caused by pot fishing to the seabed.

Associated journal article: Sarah C. Gall, Lynda D. Rodwell, Sarah Clark, Tim Robbins, Martin J. Attrill, Luke A. Holmes, Emma V. Sheehan. The impact of potting for crustaceans on temperate rocky reef habitats: Implications for managementMarine Environmental Research, 2020; 162: 105134 DOI: 10.1016/j.marenvres.2020.105134

Rising water temperatures could endanger the mating of many fish species

Read the full story from the Alfred Wegener Institute.

In a new meta-study, experts from the Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research (AWI) have published ground-breaking findings on the effects of climate change for fish stock around the globe. As they report, the risks for fish are much higher than previously assumed, especially given the fact that in certain developmental stages they are especially sensitive to rising water temperatures. One critical bottleneck in the lifecycle of fish is their low tolerance for heat during mating. In other words, the water temperature in their spawning areas determines to a great extent how successfully they reproduce, making fish particularly vulnerable to the impacts of climate change – not only in the ocean, but also in lakes, ponds and rivers. According to the researchers’ analyses, if left unchecked, climate change and rising water temperatures will negatively affect the reproduction of up to 60 percent of all fish species. Their study was released today in the latest issue of the journal Science.

Associated journal article: Dahlke, FT et al (2020). “Thermal bottlenecks in the life cycle define climate vulnerability of fish.” Science 369(6499) : 65-70. DOI: 10.1126/science.aaz3658

Albertsons Ups Its Seafood Sustainability Efforts

Read the full story at Progressive Grocer.

Albertsons said this week that it has made significant progress toward a sustainability goal.

The food retailer said that all seafood in the food retailer’s Waterfront Bistro and Open Nature product lines will soon display the Responsible Choice logo for sustainable sourcing.

How are oysters farmed – and what’s the effect on subaqueous soils?

Read the full post at the Soil Science Society of America’s Soils Matter, Get the Scoop! blog.

These days, oyster aquaculture is stirring up the conventional definition of agriculture. But exactly how does one grow a crop of oysters? More specifically, how are soils involved in this underwater process? Let’s start by outlining a few key concepts.

%d bloggers like this: