Testing low-cost demand carp feeders in Nepal
A study evaluated demand feeders on carp production in Nepal. Results showed that use can improve production, productivity and farmers’ livelihoods.
App aims to bring clarity to seafood traceability, social compliance data
For small-scale aquaculture farmers in far-flung regions, creating traceability data can present major challenges, both linguistic and technological. It’s those challenges that VerifiK8 is poised and ready to help solve.
Carbon-nitrogen ratios in pond fertilization and biofloc systems
Prof. Claude Boyd on the importance of carbon-nitrogen ratios for pond fertilization and biofloc systems, and the relevance of precise carbohydrate inputs.
Land-use efficiency study puts aquaculture on a pedestal
Focused on land-use implications of terrestrial meat production, the study concluded that aquaculture can meet the protein demands of a growing global population without adding strain on arable land, water or our other natural resources.
Appraising pond liners for shrimp culture
The use of plastic-lined ponds by shrimp farmers can significantly improve production efficiency, support more production cycles per year, and higher mechanical aeration rates and stocking densities. The capital cost of lining ponds can be very significant, so a thorough feasibility analysis is recommended when considering this production tool.
Removing cyanobacteria and associated toxins in aquaculture ponds
Results of this study demonstrated that a commercial, granular, SCP-based algaecide corresponding to 2.5 mg/L H2O2 can be recommended as an eco-friendly strategy to effectively remove populations of the cyanobacterium Planktothrix sp. without compromising water quality or other plankton communities.
Effects of mechanical aeration on evaporation rate, water temperature
This study compared water temperature and water loss by evaporation in control ponds and in ponds aerated with surface aerators at four different aeration rates. Increased aeration rate increases the evaporation rate, which in turn lowers water temperature.
They’re ‘everywhere’: The pervasiveness of microplastics
How has the plastic in aquaculture operations contributed to microplastic pollution? And is plastic pollution contaminating aquaculture products? The Advocate takes a closer look.
Climate change impacts unite U.S. shellfish farmers
The Shellfish Growers Climate Coalition, an initiative of seven founding U.S. aquaculture farmers, last week launched a partnership with The Nature Conservancy (TNC) to spread public awareness about climate change and its impact on their businesses.
Estimating global shrimp pond area
This article by Dr. Claude Boyd reports on global estimates for shrimp pond area in several countries. Because land use is an important indicator of the environment impact of an activity, better data on the shrimp pond area and the areas devoted to other types of aquaculture are needed.
At World Ocean Summit, Mexico asks: What do we want our oceans to be?
While talk of preservation and conservation dominated the annual event, a blunt query reminded all that the oceans need protection and sustainable development.
Revisiting ionic imbalance in low-salinity shrimp aquaculture
Ionic imbalance in low-salinity culture water may negatively influence shrimp survival and growth, and it is common to apply various mineral salts to low-salinity shrimp ponds.
Can ranching ‘zombie urchins’ boost uni, save kelp forests?
With Norwegian knowledge and a partnership with Mitsubishi, Urchinomics aims to turn worthless empty urchins into valuable seafood while restoring kelp forests and creating jobs.
Why water mixing and movement is key in aquaculture systems
Water mixing and movement distributes dissolved oxygen, fertilizers, liming and other products, as well as destratifies the water column in aquaculture systems.
What is biodiversity and its relevance to aquaculture certification?
Aquaculture certification programs reduce the environmental impacts of aquaculture and avoid negative impacts on biodiversity, but no single indicator of biodiversity can be used as a standard in aquaculture certification.
Stocking rate effects on growing juvenile sunshine bass
A dose-response study was conducted in an outdoor biofloc system to begin quantifying the stocking rate production function for sunshine bass advanced fingerlings.