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The control of temperature and light intensity in microalgae culture in outdoor tanks is difficult. Progress in algal biotechnology and the use of photo-bioreactors, metabolic engineering and other advances supported development of a novel underwater light bank reactor that allows for more effective light utilization by cultured microalgae. 

The preventive use of common salt (sodium chloride) by commercial producers of freshwater fishes has many benefits, including helping with the routine prevention of losses due to diseases, stress and mishandling during transport, harvesting, grading, counting, weighing and induced spawning. 

Iron is the fourth most abundant element in the earth’s crust, but occurs at very low concentrations in surface waters and oceans. It is an essential element for many organisms as part of many enzymes, and also has an important role in plant photosynthesis. 

A number of large salmon farming companies are now investing significantly to increase land-based, water recirculating aquaculture systems (RAS) in northern Europe and North America, and there is likely a need for more trained farm personnel to run and manage these and other close-containment aquaculture facilities. 

An aquaponics teaching system was designed, built and operated by students at the University of Arizona, integrating its operation and management into the educational curriculum. This engineering design will require minimum maintenance and will last years. 

Aquafeed manufacturers and alternative feed ingredient suppliers from all over the world gathered in Silicon Valley for F3, the Fish Free Feed contest. In the hub of innovation, solutions to a global problem were on full display. 

A study assessed the nutritional value of farmed vs. wild white-fleshed fishes using hybrid striped bass, largemouth bass and bluegill. Results showed that farmed, white-fleshed fish are as nutritionally valuable – and in some cases, more so – than wild fish. 

Laboratories with industry partnerships are making aquaculture more innovative, efficient and responsible. These collaborations offer access to expertise, facilities and funding to further the industry and improve global food security. 

Combining geophysical fluid dynamics and marine biology, Brian Von Herzen’s visionary technology will soon be tested off the coast of Massachusetts before export to the Indian Ocean. 

Biannual conference/competition showcased 40 new seafood businesses, or related services, from around the world. Winners were chosen on the strength of the opportunity, meaningful impact and compelling leadership and presentation. 

Commercial nitrogen and phosphorus fertilizers are widely used in aquaculture production systems to stimulate phytoplankton growth and the food web that provides natural food organisms beneficial to stocked fish fry and shrimp postlarvae. 

A few anions and cations, and un-dissociated silicic acid represent the largest fraction of dissolved inorganic solids in water. The total concentration of ions is called the salinity. The total dissolved-solids concentration usually is roughly equal to salinity in freshwater. Unlike seawater, freshwater varies greatly in salinity and proportions of individual ions. Calcium and bicarbonate are dominant ions in river water, but sodium and chloride are dominant in seawater. Water contains many other inorganic substances, as well as many trace elements. 

The creation and application of reference tables for acceptable concentration ranges of physical and chemical water quality variables for culture organisms would be challenging due to the differing tolerances found among the many farmed species. 

The authors believe that dry-out periods likely destroy most organisms in pond bottoms, and liming of the entire bottom area should be done only to neutralize soil acidity and increase pH for organic matter decomposition by soil microorganisms. 

Live markets represent a promising niche in regions where locally raised seafood cannot compete with inexpensive imports. Study results suggested regional shrimp producers could effectively reach premium markets by shipping using waterless methods. 

In addressing waste managers – representing the governments of various Asian nations at the “Inception and Capacity-Building Workshop on National and City-Level Waste Management Strategies” in Osaka, Japan – the author recommended holistic views, focusing “upstream” and using waste management interventions to foster social capital. 

La granja de ostras de Bill Mook se está adaptando a las lluvias más frecuentes e intensas, al agua de mar más ácida y cálida, y a otros desafíos que conlleva el cambio climático. 

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.