IN BRIEF - Shrimp and Oysters in the Same Tank – Benefits of Multitrophic Aquaculture
UNITED STATES
Friday, August 02, 2024
Scientists are developing technologies that would make it possible to grow two valuable commodity items even in an ordinary basement.
A scientist from the College of Life Sciences and Agriculture (COLSA) at the University of New Hampshire (UNH) is studying the benefits of integrated multi-trophic aquaculture (IMTA).
IMTA is a system in which two or more organisms are grown together. This process could make shrimp farming more sustainable and support the growth of the industry in the United States.
University of New Hampshire graduate student Elizabeth Martin tests water samples during a shrimp farming study at the University of New Hampshire Coastal Marine Laboratory in 2023. Photo: University of New Hampshire.
Elizabeth Martin, a graduate student in the marine biology program at COLSA, is studying IMTA systems that pair farmed shrimp with filter-feeding species such as oysters to determine whether the pairing will reduce the amount of ammonia and phosphorus that remains in the water during the shrimp farming process.
"Most of the shrimp we consume comes from overseas, and oysters are also one of the most valuable imported seafood products, so developing a local industry will help reduce dependence on these overseas markets," says Martin.
Although shrimp produce ammonia naturally, there are other sources of ammonia, including shrimp feed, which often contains high levels of nitrogen, natural breakdown of feed in the water, dead organisms, feces, and other materials that complicate shrimp aquaculture production. However, in the natural environment of shrimp, there are filter feeders, such as clams, that remove excess nutrients from the water.
Initiative supports Zimbabwe’s goal of building a US$1 billion fisheries and aquaculture industry by 2030
Midlands State University (MSU) will develop a large-scale aquaculture project at Pitscottie Dam, Kwekwe, to boost fish production and food security. Zimbabwe consumes 85,000–95,000 tonnes of fish annually but produces only 25,000–40,000 tonnes, leaving a major supply gap.
Webinar highlights finance, markets and enterprise development for small-scale producers
NCDC, FAO and partners will promote Fish Farmer Producer Organisations (FFPOs) as tools to strengthen climate-resilient fisheries and aquaculture, expanding collective action, access to finance and markets, training and sustainable livelihoods.
Artisans in Ibrahim Hyderi, Karachi, continue building wooden fishing vessels by hand, preserving skills passed down through generations.
Using eucalyptus and African teak, craftsmen shape and assemble each boat without modern industrial methods. A small vessel can take around three months to complete and cost about PKR 1 million (US$3,600), sustaining both Pakistan’s maritime heritage and coastal fishing communities.
Handful Marine Company Ltd, owner of the Cook Islands-registered vessel Kema, cannot be located despite its registered office in Suva, Fiji.
The company was fined $400,000 by the Cook Islands High Court in June for illegal fishing. Authorities have been unable to locate the foreign-owned firm following the court ruling.
Peru’s Ministry of Production (Produce) has reactivated the fishery for the jumbo flying squid (*Dosidicus gigas*, locally known as *pota*)—one of the country's key artisanal fisheries—following scientific studies conducted by the Marine Institute of Peru (IMARPE) as part of "Operation Jumbo Flying Squid V." "The measure is part of the Fisheries and Aquaculture Reactivation Plan promoted by the government to restore productive activity and protect the incomes of thousands of families linked to this fishery," the Ministry explained.
The Maximum Permissible Total Catch Limit (LMCTP) for 2026 was raised to 709,659 tonnes, of which 82,321 tonnes will be available for harvesting between August 30 and December 31.
Source: Industrias Pesqueras | Read the full article here
Products will be on display at the event taking place from 2-4 September at the Sands Expo and Convention Centre in Singapore.
Seafood Expo Asia/Seafood Processing Asia, produced by Diversified, brings together seafood suppliers from across the globe to connect with buyers throughout Asia and spotlight what’s next in the industry. Exhibitors will showcase everything from ready-to-eat, health-forward and value-added seafood products to cutting-edge packaging, processing equipment, and the services and technologies driving the industry forward.
Buyers can explore the newest seafood products designed for the Asian market — and meet the companies behind them — through the event’s onsite Product Showcase and across the exhibit hall floor.
Chilean salmon farming and wild catch company Blumar’s aquaculture division progressed from an operating loss of US $1.7 million in the second quarter of 2025 to an operating profit of $17.4m in the same period this year, despite a price drop that meant it ended with the same sales income for a greater volume of fish.
The differences were that its overall revenues grew from $113m to $127m due to tariff refunds from the United States, and that ex-cage costs were the lowest for some time, reports Fish Farming Expert's Chilean sister site, Salmonexpert.cl.
Author: Jonathan Garcés / fishfarmingexpert | Read the full article here
AQUASATH tests the coexistence of renewable energy and multitrophic aquaculture beneath the DemoSATH platform
Commercial divers installed an experimental farm beneath Spain’s floating DemoSATH wind turbine, cultivating European flat oysters, pullet carpet shell clams, mussels and Ulva green algae. Led by Saitec Offshore Technologies, the AQUASATH trial uses nets, collectors and ropes attached to the submerged structure to assess growth, survival, maintenance and the feasibility of combining offshore wind energy and aquaculture in the same marine area.
ECOWAS expert calls for better genetics, research, local inputs and stronger standards
Dr. Adegoke Agbabiaka warned that Nigeria’s fisheries potential is being constrained by weak research, poor seed quality, costly imported inputs and insecurity. He urged investment in certified broodstock, local feed production and aquaculture research to boost output, affordability and reduce import dependence.
Voters prioritize national control over marine resources
Iceland voted 52.8% to 47.2% against reopening EU membership negotiations, with 82.6% turnout. Control over fisheries, which account for about one-third of goods exports, was a decisive issue. The government said it will respect the result and halt talks.
UNITED STATES
ZIMBABWE
Initiative supports Zimbabwe’s goal of building a US$1 billion fisheries and aquaculture industry by 2030
INDIA.png)
PAKISTAN
COOK ISLANDS
Handful Marine Company Ltd, owner of the Cook Islands-registered vessel Kema, cannot be located despite its registered office in Suva, Fiji.
PERU
Peru’s Ministry of Production (Produce) has reactivated the fishery for the jumbo flying squid (*Dosidicus gigas*, locally known as *pota*)—one of the country's key artisanal fisheries—following scientific studies conducted by the Marine Institute of Peru (IMARPE) as part of "Operation Jumbo Flying Squid V." "The measure is part of the Fisheries and Aquaculture Reactivation Plan promoted by the government to restore productive activity and protect the incomes of thousands of families linked to this fishery," the Ministry explained.
SINGAPORE.png)
Seafood Expo Asia/Seafood Processing Asia, produced by Diversified, brings together seafood suppliers from across the globe to connect with buyers throughout Asia and spotlight what’s next in the industry. Exhibitors will showcase everything from ready-to-eat, health-forward and value-added seafood products to cutting-edge packaging, processing equipment, and the services and technologies driving the industry forward.
CHILE
Chilean salmon farming and wild catch company Blumar’s aquaculture division progressed from an operating loss of US $1.7 million in the second quarter of 2025 to an operating profit of $17.4m in the same period this year, despite a price drop that meant it ended with the same sales income for a greater volume of fish.
SPAIN
NIGERIA
ECOWAS expert calls for better genetics, research, local inputs and stronger standards
ICELAND
Voters prioritize national control over marine resources
