The husband-and-wife team of Bill and Betty More has earned admiration and respect in many parts of the world for their many decades of work in aquaculture and sustainability certification. SIRF has established a living memorial in their name.
With their fast growth and ample light-flavored flesh, pirarucu present great potential. Industry growth is hampered by limited technology and management of domestication practices. Also, current commercial diets are typically not fully suited to the nutritional needs of pirarucu.
China, the world’s largest producer of farmed fish, represents a huge opportunity for the Global Aquaculture Alliance and its Best Aquaculture Practices certification scheme. GAA’s Steve Hart talks about the inroads the organization has already made and how he can leverage his background in the soy industry.
Zero-exchange biofloc systems allow elevated stocking densities and production, but also require more dissolved oxygen and thorough water circulation. A new type of air injector uses only a centrifugal pump to recirculate water while naturally aspirating ambient air.
In line with the Global Aquaculture Alliance’s mission to advocate, educate and demonstrate responsible aquaculture worldwide, the Advocate is a forum for information and insight into one of the world’s most important and fastest-growing industries.
A large-scale aquaculture project in Ivory Coast, with "soft technology" adopted by Societe d’Elevage et de Distribution de Poissons, allows the full growing cycle to be controlled using local materials, manpower and inputs.
To help produce high-quality aquaculture feeds, the U.S. Soybean Export Council spearheaded the Asian Aquaculture Feed Formulation Database project, designed as a reference tool for individuals involved in feed formulation, ingredient purchasing, quality control and research.
Aquaculture of high-value white sturgeon is in its early phases in British Columbia, Canada. Given the long time required to produce caviar, licensed producers are looking at developing markets for value-added products and byproducts based on sturgeon meat.
Canada exports farmed seafood products to more than 22 countries and is the main seafood supplier to the U.S. market. Finfish, primarily salmon, production is strong and shellfish production is growing, but diversification will be imperative to maintain competitiveness.
Controlling total ammonia-nitrogen (TAN) concentrations is the primary concern when sizing a biofilter for use in a recirculating aquaculture system. Sizing decisions are best based on previous experience with a given biofilter media in a specific biofilter configuration.
Fenneropenaeus chinensis was the most important farmed shrimp species in China until 1995. Lessons learned from its development made China a pioneer, especially in shrimp larval production. Shrimp farmers must enhance their understanding of the interactions of farming activities with their ecosystems.
The water quality in recirculating aquaculture systems is generally a function of the tank size, biomass, feed inputs and waste treatment efficiency. Adequate biofiltration can control the build-up of ammonia-nitrogen and nitrate-nitrogen in the systems.
The aquaculture industry in Brazil is moving toward further expansion with the support of the federal government. A key strategy of the More Fishing and Aquaculture plan is the development of aquaculture in federal waters. The plan promotes sustainable development of fisheries and aquaculture by linking those involved and consolidating state policies addressing social inclusion, security and food sovereignty. Tilapia is the main farmed fish, although tambaqui and others have potential for large-scale production due to their wide acceptance by consumers.
To start a biofilter together with a source of nitrifying bacteria, you must provide the conditions that will encourage the growth of the bacteria. The basic process requires initial preparation of water chemistry, adjustment of alkalinity to support bacterial growth and the addition of ammonia.
Biological filtration is one of the critical required unit processes in recirculating aquaculture systems. Non-corrosive filter media with large amounts of surface provides area for nitrifying bacteria cells to colonize.
A collaboration among the Center for Aquaculture Research in Colombia, Center for Research, Education and Recreation, and University of Miami is working to adapt the latest aquaculture technology available worldwide to local conditions and create opportunities for farming new commercial species in Colombia.