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.
Indonesia proposed strengthening cooperation with China in smart aquaculture, offshore production, genetics, and digitalization during the Global Ocean Development Forum held in Qingdao.
The proposal was presented by Rokhmin Dahuri, president of the Indonesian Aquaculture Society and member of the Indonesian Parliament, who identified several areas where both countries could develop collaboration: joint research, seed production, digital monitoring, biotechnology, cold chain, and marine aquaculture technologies.
Dahuri also presented a bay-scale marine ranching model integrating habitat restoration, breeding zones, restocking, mariculture, and economic activities for coastal communities. According to his approach, technologies developed in China should be adapted to the tropical ecological and productive conditions of Indonesia.
The proposal comes at a time when China is expanding the development of offshore aquaculture systems, sensors, automation, and digital management platforms—technologies that Indonesia considers of interest to modernize part of its aquaculture production.
The vessel Dai-10 Yufuku Maru sank off the coast of Goto after a fire broke out in the engine room; the captain was rescued unharmed and fuel spill containment efforts are underway.
A 19-gross-ton wet feeding vessel belonging to the subsidiary Nissui Tuna sank at 11:18 a.m. after a fire started in its engine room. The incident occurred while the vessel, identified as the Dai-10 Yufuku Maru, was traveling toward a tuna farming facility in Goto.
The captain of the vessel was successfully rescued without injury. Following the sinking, Nissui confirmed a fuel spill in the area, prompting the deployment of recovery operations using absorbent materials to mitigate the environmental impact on the marine area.
Authorities and the company indicated that the cause of the engine room fire remains unknown. Additionally, it was reported that options for potentially refloating the vessel remain under evaluation and study by technical teams.
Group urges stronger cooperation on key shared stocks
Representatives from the EU, Faroes, Iceland, Norway and UK met on 16 September to improve management of mackerel, blue whiting and Atlanto-Scandian herring, calling for better industry data and faster adoption of sustainable plans. Talks resume in October.
It also discussed the importance of encouraging national governments to take swifter action in pursuing the implementation of sustainable management plans for stocks.
Government promotes technology and financing to boost jobs and production
Tanzania urged youth to invest in aquaculture as output reached 124,000 tonnes in 2025, up from 44,735 tonnes in 2021. Deputy Minister Ng’wasi Kamani highlighted loans for fish cages and modern farming, while fish consumption rose to 10.2 kg per capita.
The expansion of aquaculture comes amid rising domestic demand for fish.
CAFFAN marks 20 years promoting food security, circular economy and economic empowerment
Nigeria’s CAFFAN Oyo will celebrate its 20th anniversary on November 19–21 in Ibadan. The event aims to advance urban aquaculture and integrated farming to strengthen food security, circular economy, and women & youth empowerment, alongside training, networking and fisheries technology
Collector urchin could open a new high-value aquaculture market
The Sea Urchin Facility (SURF) in Providence is studying controlled production of native collector sea urchin (Tripneustes gratilla) for uni, a prized delicacy, while assessing farming systems, markets and distribution needed for future commercial scale-up.
KKP plans broader upgrade of 4,582 vessels by 2029
Indonesia’s KKP aims to modernize 950 fishing vessels in 2027, tackling aging fleets, high costs and catch quality. The plan forms part of a 4,582-vessel upgrade by 2029, backed by priority programs and a Rp16.65 trillion (US$912m) 2027 budget.
Regional partnership combines Hokkaido seafood with Noto processing expertise
Sugiyo Group and Marusa Sasaya Shoten developed two products: ajillo made with farmed Kushiro Akane Salmon and Hokkaido saury fermented using Noto’s traditional rice-bran technique. The initiative supports Noto’s seafood sector after the 2024 earthquake.
Aquaculture technology supplier AKVA Group has agreed to sell its industrial property at Hitra in central Norway while retaining the site under a 13-year lease.
Bevest subsidiary Corvus Estate will acquire the property at Kalvøyveien 13 on Jøsnøya, with the transaction expected to close this month, according to a stock-exchange announcement on Thursday. No purchase price was disclosed.A new purpose-built facility will also be constructed on the property and leased to AKVA once completed. Until then, the company will continue operating from the existing building.
Source: SalmonBusiness | Read the full article here
Europêche is pleased to announce that the Danish Pelagic Producers Organisation (DPPO) has officially joined the organisation as its newest member, further strengthening the collective voice of the European fishing sector at both EU and international levels.
Representing one of Europe’s leading pelagic fishing organisations, DPPO brings extensive expertise in the sustainable management of pelagic fisheries, a strong commitment to science-based decision-making, and a proven track record in promoting responsible fishing practices and high-quality seafood production.
UNITED STATES
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UNITED KINGDOM
Group urges stronger cooperation on key shared stocks
TANZANIA.png)
Tanzania urged youth to invest in aquaculture as output reached 124,000 tonnes in 2025, up from 44,735 tonnes in 2021. Deputy Minister Ng’wasi Kamani highlighted loans for fish cages and modern farming, while fish consumption rose to 10.2 kg per capita.
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SEYCHELLES
Collector urchin could open a new high-value aquaculture market
Regional partnership combines Hokkaido seafood with Noto processing expertise
NORWAY
Aquaculture technology supplier 
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Representing one of Europe’s leading pelagic fishing organisations, DPPO brings extensive expertise in the sustainable management of pelagic fisheries, a strong commitment to science-based decision-making, and a proven track record in promoting responsible fishing practices and high-quality seafood production. 
