Responsibility
Silicon, diatoms in aquaculture
The silicon plants take up in silicic acid from water strengthens cell walls. Among the phytoplankton, diatoms particularly need silicon.
Intelligence
Land-based macroalgae farming
Land-based cultivation of macroalgae can minimize impacts on wild macroalgae stocks while reducing harvest costs and controlling quality. Integration of macroalgae with land-based fish culture systems could reduce capital and operating costs.
Health & Welfare
Rotifer enrichment: Concept simplifies larval fish feeding
In trials, a culture diet that naturally enhances rotifers and eliminates the need for enrichment was tested. Skretting feed specialists found similar growth and reproduction figures were registered with a conventional rotifer enrichment diet and a standalone diet for a period of nine weeks.
Aquafeeds
Algae alternative: Chlorella studied as protein source in tilapia feeds
Chlorella and other species have potential as protein sources in aquafeeds. In trials with tilapia fry raised in a recirculating system, the fish received a fishmeal-based control diet or feeds with portions of the fishmeal replaced by Chlorella.
Intelligence
Pond production practices linked to yellow coloration in catfish fillets
The yellow coloration in catfish fillets caused by carotenoids does not affect flavor, but many consumers see the yellowish fillets as inferior.
Aquafeeds
Aquaculture shows substantial growth in global feed production survey
A global survey of feed producers in 134 countries found that aquaculture feed production rose 17 percent in 2012, affirming its position as the fastest-growing species sector.
Aquafeeds
Microalgae provide food, feed, fuel
About 30 percent of global microalgae production goes to animal feeds, with large applications in aquaculture, particularly for larval stages.
Intelligence
Off-flavors in aquaculture products, part 2
Off-flavors in seafood can stem from a variety of sources. Industrial effluents can at least secondarily contribute to off-flavors in fish. Off-flavor oxidative carbonyl compounds increase during cold storage of some farmed fish.
Responsibility
Phosphates, pH management control algal blooms in barramundi ponds
Pond pH had a strong effect on the effectiveness of a product applied to remove excess phosphate to control algal blooms in eutrophic aquaculture ponds.
Responsibility
Farming algal fuel: Economics challenge process potential
Algae offer advantages over terrestrial plants for biofuel production: short generation cycles and fast population growth. Algal fuel production would spare corn and soybeans for consumption as food for humans.
Responsibility
Ultrasound technology controls algae, biofilm growth
Ultrasound offers a low-impact alternative to chemical treatments for unwanted algae, like chlorophyll a, and biofilms in aquaculture.
Responsibility
HISTAR development
The Hydraulically Integrated Serial Turbidostat Algal Reactor (HISTAR) developed at Louisiana State University superimposes contaminant control techniques on a continuous algal production system.
Health & Welfare
Algae alternatives serve in larval rearing of sea bream
Sea bream fry are produced using the greenwater technique in which microalgae are added to larval-rearing tanks during the first 20 to 30 days after hatching.
Responsibility
Phytoplankton in aquaculture ponds
Aquaculture ponds typically have ideal conditions for the growth of various species of phytoplankton. Green algae are considered most desirable in freshwater ponds.
Health & Welfare
Shrimp feed trials find pen size matters
By comparing the growth of shrimp fed different diets in big versus small net pens, trial results suggested that shrimp could compensate for lower diet quality by grazing on the algae growing on the surfaces of the net cages.
Responsibility
Phytoplankton dynamics in aquaculture ponds
Phytoplankton are essential in intensive aquaculture ponds but an excess can result in shallow thermal stratification.