Articles tagged with Aquaculture
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Researchers discovered that Acanthophora spicifera extracts inhibit Vibrio coralliilyticus growth and improve survival rates in Ostrea edulis larvae. The study highlights the potential of natural compounds from seaweeds as an alternative to antibiotics for aquaculture disease control.
A study by University of Hawaii researchers suggests that revitalizing Indigenous aquaculture systems, known as loko iʻa fishponds, can increase locally available seafood production. This revival has the potential to boost local food production and provide a sustainable solution to Hawaiʻi's seafood supply.
Researchers at NTU Singapore and Temasek Polytechnic develop a new, sustainable feed alternative for farmed Asian seabass, reducing reliance on wild-caught fishmeal. The single cell protein is cultivated from soybean processing wastewater, offering a promising solution to the aquaculture industry's environmental challenges.
Research reveals correlation between muscle fiber diameter and mtDNA copy number across different fish types, suggesting genetic regulation role in shaping phenotypes. Decrease in muscle mtDNA copy number during winter may contribute to growth heterosis of allotriploid fish.
A new study reveals that disease-resistant fish exhibit lower viral loads and higher survival rates compared to susceptible counterparts. The results demonstrate the benefits of breeding resistant animals for sustainable food production and animal welfare.
A recent study found humpback whale entanglements in BC fish farms are extremely rare, with only eight instances over 13 years. Young whales' curiosity may be a contributing factor, according to researchers.
A recent study by the University of Cambridge found that farmed salmon production leads to a loss of essential nutrients. Consuming one-third of current food-grade wild feed fish directly could maximize nutrients from the sea. This approach could help address global nutrient deficiencies and improve both diets and ocean sustainability.
A study analyzing salmon mortality data from 2012 to 2022 found a significant increase in mass mortality events worldwide. The researchers estimate potential maximum annual losses from these events to be over 8 million fish across major salmon-producing countries.
A recent study produced new germplasm resources through distant hybridization of Koi carp and Chinese rare minnow. The researchers found that triploid hybrids showed faster growth rate and larger body size than diploid hybrids under the same conditions.
The first Neolithic farmers and shepherds in Andalusia settled permanently on the island of San Fernando, Cadiz, 6,200 years ago. They collected and consumed shellfish throughout the year, with a greater exploitation during the colder months of autumn, winter, and early spring.
Vittrup Man's genetic signature was distinct from local skeletons, suggesting a non-Scandinavian origin. His tooth enamel isotopes revealed a shift from coastal to farm food in late teens, indicating a transition to farming society in Denmark.
Researchers found that households with high seafood consumption rely on home production, bartering, and social networks to acquire seafood. Market access is key, but promoting social networks through cooperatives or fisher groups could reinforce healthy seafood diets.
A new survey from the University of East Anglia found that strong trust between managers and fishers is essential for sustainable fisheries, but has been eroded due to Brexit. The research highlights perceived incompetence, indifference to fishers' livelihoods, and inadequate consultation as key drivers of distrust.
A novel antimicrobial protein, ClyX-2, effectively cures S. iniae infections in hybrid striped bass with a 95% survival rate, outperforming traditional antibiotic treatments like carbenicillin. The discovery aims to reduce the economic loss of $150 million annually caused by streptococcosis and promote sustainable aquaculture practices.
Researchers found that zebrafish lacking usp3 exhibit enhanced hypoxic capacity due to decreased HIF-1α degradation, leading to improved tolerance. The study reveals usp3's role in modulating the activity of HIF-1α and its impact on hypoxia signaling.
The study found that black spots in salmon fillets contain eumelanin, a type of melanin present in human hair and skin, while red spots do not detectably contain melanin. The discovery provides an important step towards understanding the cause of these unsightly spots.
Researchers developed a pipeline to evaluate the risk of infections by aquatic animals. The study found no evidence of human-associated viruses in aquatic animal transcriptomes, confirming their safety as protein sources. However, proper handling and storage are crucial to controlling SARS-CoV-2 spread through cold-chain food.
The BioSPACE project aims to provide farmers, environmental agencies, and water-reliant industries with portable sensors to rapidly detect germs that threaten marine and freshwater life. The economic burden caused by waterborne diseases exceeds $3 billion in direct health care costs each year in the United States.
A recent study from the University of Copenhagen found that consumers rate vertically farmed greens similarly to organic ones. The study debunked consumer prejudices about vertically grown produce, showing that it can be just as healthy and natural.
A recent study found that half of commercial caviar products in Europe are illegal, and some don't contain any trace of sturgeon. The research analyzed DNA and isotope patterns on 149 samples of caviar and sturgeon meat, revealing widespread poaching and violation of trade laws.
A new versatile platform controls peptide hormones in fish, revealing surprising findings about conserved genetic networks and adaptable hormone regulation. This innovative method holds promise for transforming fish farming practices and exploring ways to prolong vertebrate lifespan.
Researchers have pinpointed the emergence of muddy flavors in farmed fish by measuring the concentration of geosmin and other compounds. The study highlights the importance of water quality management to prevent the production of off-flavor compounds, which can impact aquaculture industry revenue and sustainability.
Researchers developed a framework for climate-resilient fisheries, analyzing 18 diverse fisheries across ecological, social and governance dimensions. The framework identifies five archetypes of resilient fisheries with unique pathways to achieve sustainability and benefits to society.
A recent study published in Water Biology and Security challenges the hypothesis that cyanobacteria produce β-N-methylamino-L-alanine (BMAA), a non-protein amino acid linked to neurodegenerative diseases. The study found no detectable levels of BMAA in laboratory-cultured strains and natural cyanobacterial bloom samples.
A new study finds that warming temperatures may triple groundwater depletion rates in India under a business-as-usual scenario, with approximately 60% of the country's irrigated agriculture depending on the threatened groundwater. The study calls for policies to conserve groundwater and reduce energy subsidies.
Researchers are creating synthetic microbiomes to protect aquatic environments from bacteria, improving shrimp health and reducing the risk of disease in aquaculture farms. The team is collaborating with farmers in Ecuador to develop new microbial communities that will increase resistance to pathogenic bacteria.
Researchers found that replacing forage fish with formulated diets increased crude protein content in largemouth bass muscles, while also altering fiber characteristics. The study suggests that this dietary shift can improve the nutritional aspects and meat quality of largemouth bass.
A landmark study reveals that more than 90% of global aquaculture and capture fisheries face substantial risks from environmental change. The study highlights the interconnectedness of ecosystems and the need for transboundary collaboration, diversification, and stakeholder engagement to adapt to climate change.
A University of Gothenburg study reveals that fish farm waste can be converted into biogas, reducing waste and generating nutrients for plants. The biogas can power the aquaponic farm, making it a sustainable energy source.
Researchers at the University of Gothenburg have discovered twenty species of sea lettuce in the Baltic Sea region, including three invasive species. The survey highlights the importance of knowing which species grow in specific areas to maintain and protect valuable ecosystems.
Researchers identified candidate genes and loci associated with aquaculture-relevant traits in tilapia, providing valuable insights to breed more resilient fish. The findings aim to guide selective breeding programmes and enhance the climate resilience of freshwater aquaculture.
A longitudinal study using acoustic telemetry monitored rays in clam leases, finding that rays spent more time near sites than reported, but not necessarily preferring them. The study highlights the need to understand if clam leases are part of rays' natural foraging habitats and if they interact with the clams.
The Chinese sturgeon, critically endangered with a limited spawning ground, has a polygynandry mating system and breeding interval of 2-6 years. Genetic diversity remains relatively high despite inbreeding coefficients indicating low detrimental effects on offspring.
Aquaculture can help restore ecosystems by removing excess nutrients and promoting biodiversity. Conservationists are using aquaculture techniques to create healthy habitats for marine species, including shellfish reefs and fish populations.
Researchers at MIT have developed a membrane-free electrochemical process to remove carbon dioxide from seawater, potentially reversing ocean acidification. The system could be integrated with existing desalination plants or ships to help mitigate emissions.
A $10 million USDA grant will help increase the production of seafood in the Midwest, which is healthier and more sustainably produced than land-based foods. The project aims to promote aquaponics and reduce reliance on imported seafood, which can be affected by volatile markets and environmental issues.
A study by UC Santa Barbara researchers found that 95% of the cumulative environmental footprint of farmed chicken and salmon is concentrated on less than 5% of the planet, with 85.5% spatial overlap between the two products due to shared feed ingredients. This highlights opportunities for promoting sustainability in the food system.
The first full reference genome for a genetically improved tilapia strain has been published, revealing substantial genetic variation that highlights the need for strain-specific breeding programmes. The genome assembly provides crucial resources for breeders to develop strains with enhanced growth rate, immunity, and resilience.
A new laboratory study shows that microplastics increase the severity of an important viral fish disease. Nylon fibers had the greatest impact on disease severity. The findings have major implications beyond fish farming, affecting human health and natural environments.
Researchers found four genetic populations of the finless porpoise in Chinese waters and three in the Gulf of Thailand, with unique matriline lineages. The study suggests ongoing gene flow among populations, requiring careful evaluation of inter-population connectivity for conservation action.
A novel long non-coding RNA, MIR144HG, has been identified as a key player in the immune escape of pathogenic Vibrio in teleost fish. It negatively regulates antibacterial immunity and enhances bacterial escape by suppressing the expression of MyD88 and p65 proteins.
Researchers developed AI-powered software to measure and classify pacu fish, enabling breeders to select animals with higher fillet yield and faster weight gain. The system uses deep learning and can recognize different parts of the fish even in challenging environments.
Researchers at FAU Harbor Branch Institute found that Florida pompano larvae can be grown in salinities as low as 10 parts per thousand without adverse effects. The study showed that growth, fatty acid profiles, and transcriptome responses were normal across different salinities.
A new study finds that seafood farming's growth rate has already peaked in 1996 and is now declining, requiring rebuilding of wild fish stocks to meet future demand. Without this approach, relying solely on aquaculture could lead to a global seafood shortage by 2030.
The study reveals that cumulative pressures of food production are more concentrated than previously believed, with 92% of pressures from land-based food production concentrated on just 10% of the Earth's surface. The top five offenders are pig farming, cow farming, rice, wheat, and oil crops.
A new study found that offshore mussel farms can increase species abundance, including Atlantic horse mackerel and European lobster, on degraded seabed habitats. The research suggests that this practice could have wider environmental benefits, supporting the national and international Blue Growth agenda.
Research found that native predatory fish like jacks and barracuda feed on Australian mullet, an invasive species introduced to Oahu waters. This shift in diet helps control the invasive mullet population, which competes with native fish for resources.
A 20-year study found that selectively bred rainbow trout need less feed to achieve the same growth, reducing environmental impact. The fish also achieved similar nutritional quality when fed a locally produced, soy-free feed.
Growing onshore algae in seawater-fed aquaculture systems along the Global South's coasts could increase food production by 50% and feed 10 billion people by 2050. Algae provide high protein content, essential amino acids, and minerals found in meat, making them a sustainable solution to climate change.
MIT researchers create a low-power, sound-harvesting camera that captures color photos and transmits data wirelessly. The autonomous device can run for weeks without power, enabling scientists to explore remote oceans and monitor climate change impacts.
Researchers at Aalto University suggest using crop residues and by-products in livestock and aquaculture production to free up human-usable material. This could increase the global food supply by up to 13% without increasing resource use or requiring major dietary changes.
Researchers gauged small-scale fishers' willingness to use vessel tracking systems, finding that safety functionality and ownership of data were key factors. In a survey of 211 fishers, 67% were willing to pay for the technology, while those citing corruption as their main problem were more likely to participate if paid.
A recent study reveals that the production of fish feed is the greatest contributor to greenhouse gas emissions in China's aquaculture industry. The research found that provinces such as Guangdong, Hubei, Jiangsu, and Shandong have the highest GHG emissions, accounting for approximately 46% of all emissions.
Researchers at Texas A&M AgriLife are working on developing effective nutritional strategies to improve the health, growth, and productivity of hybrid striped bass in aquaculture, using protein substitutes like glycine and glutamate to replace fishmeal.
Shellfish farmers in California are adapting to ocean acidification by diversifying their operations and relying on scientific resources to pinpoint environmental factors contributing to large die-off events. Growers also emphasize the need for policy changes, such as adjusting regulatory requirements and permitting processes.
Mariculture holds great potential to help satisfy global demand for meat, but requires careful governance and efficient operations. The study suggests that finfish and shellfish farms can increase seafood availability, while maintaining ecosystem health.
Researchers have successfully developed a fishmeal and fish oil-free feed for largemouth bass that delivers excellent growth, survival, feed conversion, and fillet quality. The alternative diet uses locally sourced ingredients like soybean meal and algae oil, reducing costs by up to 90%.
A recent study found that yellow perch can expel microplastics from their bodies, but the process reduces nutritional value and alters liver function. The fish also experienced changes in gut microbiota communities and reduced body protein and mineral levels.
Researchers found that genetic relatedness correlates with hormonal responses and behavioural reactions in fish, allowing for selective breeding of less-stressed fish. This approach could simplify breeding methods for aquaculture and aquariums.
The project aims to grow Golden Shiners from eggs to market size within one year using four different strategies. The goals are to serve the bait industry, aquaculture and aquaponics producers, and anglers in Minnesota, while reducing pressure to import bait fish from other states.