Fisheries
Articles tagged with Fisheries
Newly discovered microbial world helps protect developing lobsters
Study provides detailed assessment of shifts in toxin producing phytoplankton abundance
How jellyfish bycatch could be valuable collagen source for cosmetics and biotech
Research suggests that jellyfish bycatch can provide high-quality collagen without compromising quality. This circular bioeconomy solution offers new economic opportunities for small-scale fisheries while reducing waste. The collaboration with fishers revealed a willingness to participate in recycling jellyfish bycatch, but also highli...
In an experiment, yellow trout grew larger than the wild strain
In an experiment, yellow trout grew larger than the wild strain, with averages of 300 grams at 270 days compared to 237-gram range for wild-type ones. The study suggests potential for aquaculture and sport fishing, with color variation leading to different products.
Seaweed integration boosts efficiency and cuts waste in aquaculture, study finds
Researchers found that cultivating seaweed species alongside marine finfish can significantly reduce key waste products from fish farming. The study provides guidance for aquaculture producers to incorporate seaweed into existing and prospective integrated multi-trophic aquaculture systems.
Comparative analysis of intermuscular bones in hybrid fish (BTB) and its parents
Researchers have developed a new method to reduce intermuscular bones in hybrid fish through hybridization, resulting in offspring with fewer IBs and improved processing efficiency. The study provides molecular biological insights into phenotypic changes in hybrid lineages and their derivatives.
Aquaculture is shifting toward less sustainable species: new UBC study
A new UBC study found that global aquaculture production is increasingly relying on less beneficial species for food security, climate mitigation, and biodiversity. The industry's shift towards finfish has lower sustainability potential, while earlier systems like seaweed and shellfish had higher sustainability.
Why do haploid fish embryos usually die before they can fully develop? A new zebrafish study offers clues
A new zebrafish study sheds light on why haploid fish embryos often fail to survive normal development. Researchers identified 13 key genes associated with abnormal development, highlighting disruptions in FGF and Wnt signaling pathways, mitochondrial translation, ion transport, and cell-cycle regulation.
Vital freshwater fish migrations are collapsing: UN report
Hundreds of migratory fish species are facing accelerating declines due to dam construction, habitat fragmentation, pollution, overfishing, and climate-driven ecosystem changes. The Global Assessment of Migratory Freshwater Fishes identifies 325 species needing coordinated international conservation efforts.
Cannibalism takes major bite out of young blue crabs, but the shallows offer a refuge
A 37-year study by the Smithsonian Environmental Research Center found that cannibalism is the primary killer of juvenile blue crabs in mid-salinity waters. However, young crabs can escape predation by migrating to shallow waters, where they are safer from adult crabs and other predators.
Scalable aquaculture systems can improve survival, reduce labor, and enhance animal welfare
The Okinawa Institute of Science and Technology (OIST) has developed a scalable aquaculture platform that automates early-life stages, minimizing pathogen exposure and animal stress. The system uses light and flow-guided systems to improve survival rates and reduce labor input.
Share of migratory wild animal species with declining populations despite UN treaty protections worsens from 44% to 49% in two years; 24% face extinction, up 2%
The interim update to the State of the World's Migratory Species report warns that 49% of migratory species populations are declining, with 24% facing extinction, due to habitat loss and overexploitation. The report highlights the need for coordinated international action to address these threats and protect migratory species.
USF study: Gag grouper are overfished in the Gulf; this new tool could help
A USF study reveals gag grouper populations in the Gulf are overfished, with shortened seasons to aid recovery. The research team developed a statistical model to improve harvest predictions and provide explicit estimates of quota exceedance.
New study finds fish supply must be paired with public awareness to tackle malnutrition in Timor-Leste
A new study from Timor-Leste shows that increasing fish supply alone is not enough to tackle malnutrition; targeted nutrition messaging and public awareness are also necessary. The study found that households exposed to both increased fish availability and nutrition campaign were nearly twice as likely to purchase fish.
Scientists prove shellfish can be farmed far from shore
Researchers successfully farmed Atlantic surfclams offshore in the open ocean, finding faster growth and higher survival rates than those farmed near shore. The study opens new doors for offshore aquaculture in New Jersey, promising a sustainable way to grow more seafood while supporting local jobs.
Releasing pollack at depth could benefit their long-term survival, study suggests
A new study suggests that releasing pollack closer to their natural catch depths can significantly improve their chances of survival. The research found that releasing fish at these depths can increase survival rates from 56% to over 80%. This could have a positive impact on the long-term sustainability of recreational pollack fisheries.
Land-based aquacultural using “the new type of water” featured in the English listening section of the Common Test for university admissions
The English listening section of the Common Test for University Admissions featured land-based aquaculture using 'the new type of water', a mixture of seawater and freshwater minerals. This innovative method enhances fish growth rates, disease resistance, and reduces salt content, addressing global food shortages.
New Woods Hole Oceanographic Institution study cautions that deep-sea fishing could undermine valuable tuna fisheries
A new Woods Hole Oceanographic Institution study suggests that large-scale deep-sea fishing could undermine valuable tuna fisheries by reducing the food available to bigeye tuna. The research highlights the importance of ecosystem-based management and considering cross-fishery trade-offs before expanding new fisheries.
FAU ‘shark-repellent’ method could reform fisheries by curbing bycatch
Researchers at Florida Atlantic University have developed a patent-pending shark deterrent that can be used to reduce bycatch in fisheries. The device produces an electric field that repels sharks from bait without affecting target fish, and has been shown to reduce catches of coastal sharks by 62-70%.
Context matters: Looking at role in fishery sustainability could serve as a foundation to improve fisheries worldwide
Governance arrangements in small-scale fisheries have been shown to impact sustainability. Research led by Mateja Nenadović found that each governance model, whether cooperative or patron-based, is better suited to specific environmental conditions. These findings provide initial building blocks for a theory of governance fit, essentia...
Study finds fisheries management—not predator recovery—drives catch levels in the North Sea
Research led by University of Miami researchers shows that effective fisheries management can coexist with predator recovery, contradicting previous assumptions. The study found that fishing effort, not predator recovery, drives fishery yields in the North Sea.
Neural progesterone receptors link ovulation and sexual receptivity in medaka
Researchers found a neuroendocrine mechanism linking ovarian status to brain signals controlling sexual receptivity in female teleosts. Progesterone analogs restored sexual behavior but not ovulation, suggesting a direct neural pathway for hormone reception.
Are you ready to swap salmon for sprats and sardines?
A UK study found that over 40% of consumers are willing to try new fish species, including sardines and anchovies. The research highlights the potential for improving national health and local economies by embracing home-caught seafood. It also reveals a generational divide in seafood consumption habits.
Japanese eels, climate change, and river temperature
A study found that Japanese eels thrive in rivers with higher summer water temperatures, particularly those with farmland and urban land uses. Volcanic geology also plays a role, as younger formations result in cooler rivers and may limit the species' expansion.
Benizake salmon farming in Fukushima moves toward full-scale commercialization in Namie Town
Benizake salmon farming is expanding in Namie Town, Fukushima, with the help of Japan's Subsidy for Business Location program. The project aims to revitalize commercial activity and create employment opportunities for affected residents after the 2011 Great East Japan Earthquake and Tsunami.
£1.4 million grant for groundbreaking University of Stirling salmon health study
A £1.4 million funding has been secured by the University of Stirling to explore tissue remodelling processes in salmon, with a focus on reducing mortality linked to gill and skin health issues. The research will deliver practical tools for fish health and productivity while enhancing sustainability in the Scottish aquaculture industry.
Striped bass are struggling; UMass Amherst biologists know how to help
Researchers at UMass Amherst found that reducing air exposure, fight times, water temperatures, and increasing angler education are crucial for a sustainable fishery. The team's study revealed that longer fights and higher water temps increase recovery time and stress on striped bass.
Counting salmon is a breeze with airborne eDNA
Researchers at the University of Washington successfully tracked salmon populations using airborne eDNA, finding that the airborne DNA concentration fluctuated with visual counts reported by the hatchery. The technique links air, water, and fish, providing a valuable tool for population health monitoring and management.
Floating solar panels show promise, but environmental impacts vary by location, study finds
A new study finds that floating solar panel systems can have varying effects on aquatic ecosystems depending on the reservoir's depth, circulation dynamics, and fish species. The cooling effect of the water can boost panel efficiency, but increased variability in habitat suitability for aquatic species is also observed.
First study of its kind finds deep-sea mining waste threatens life and foodwebs in the ocean’s dim “twilight zone”
A new study finds that deep-sea mining waste can disrupt marine life in the midwater 'twilight zone', where vast communities of zooplankton support the ocean's food system. The waste, released during a 2022 mining trial, has lower concentrations of amino acids, threatening the delicate balance of the food web.
National TRAP Program targets ghostly issue with second round of coastal clean up funding
The National TRAP Program has awarded $1.8M to 13 projects focused on removing derelict fishing gear from US coastal waters, resulting in the removal of over 7,000 traps and 300,000 pounds of debris. The program aims to improve derelict trap prevention and mitigation through data analysis and policy recommendations.
FAU’s Queen Conch Lab receives prestigious international award
The FAU Queen Conch Lab has developed mobile lab hatcheries to restore threatened Caribbean queen conch populations and promote sustainable seafood production. These self-contained units bring advanced aquaculture capabilities to coastal communities, supporting education, employment, and food security.
Farmed totoaba could curb poaching
Researchers find that farmed totoaba could alleviate poaching pressures by establishing a regulated trade. The study suggests that a market-based solution may be more effective than a regulatory approach in curbing poaching. A $6 million subsidy program could make farming cheaper and prevent further decline of the wild population.
Warming oceans may pose a serious threat to American lobsters
Research suggests that American lobsters are more resilient to ocean acidification than previously thought, but they are highly sensitive to heat stress. The study found that warmer water led to faster embryo development, but smaller larvae with decreased survival prospects in the wild.
Dried fish – the hidden superfood vital for millions of women and children in Africa
A new study reveals that dried fish is an overlooked yet vital source of nutrition for millions of people across Africa, particularly for young children and women. The research found that even small portions of dried fish contribute significantly to recommended nutrient intakes for essential minerals like iron and zinc.
Study highlights the benefits of biodiversity for commercial fisheries
Researchers found that commercial fisheries benefit from natural fluctuations in the ecosystem, but these benefits are mediated by management and human behavior. Diversifying catches across species can provide stability and protect watermen from boom-and-bust cycles.
Community management effectively protects millions of hectares of Amazonian forest
Research reveals community management effectively protects vast areas of Amazonian forest, safeguarding biodiversity and supporting local communities. Community-led conservation efforts are crucial for long-term sustainability, but require recognition and financial support.
Traditional herb boosts fish health and immunity, study reveals
A study from the Chinese Academy of Sciences found that adding traditional herb Picria fel-terrae to fish feed improves gut structure and reduces inflammation. The herb protects intestinal health, balances immune responses, and enhances metabolism.
Meat from critically endangered sharks is commonly sold under false labels in the US
A study found that 31% of 'shark' products in the US are from endangered species, sold without proper labeling. The research used DNA barcoding to identify species, revealing critically endangered sharks were being sold as common or vulnerable species.
Steve Canty named new Director of the Smithsonian’s Marine Global Earth Observatory Network
Steve Canty has been appointed as the new director of the Smithsonian's Marine Global Earth Observatory (MarineGEO) network. As part of this role, he aims to expand how MarineGEO collaborates with communities to co-develop solutions for protecting and restoring coastal environments globally.
Seagrass swap could reshape Chesapeake Bay food web
A new study suggests that the shift from eelgrass to widgeon grass in the Chesapeake Bay could lead to a 63% reduction in invertebrate biomass by 2060. The change may favor smaller creatures and reduce the total animal biomass per square meter, impacting fisheries and ecosystem functions.
Organic solutions for better aquaculture and ecosystems
A study by Flinders University and experts in China found that herbal additives can benefit fish immunity in juvenile barramundi. However, testing revealed potential toxicity to other marine species, raising concerns about their ecological impacts.
Global review identifies opportunities to improve monitoring of juvenile fish habitats
A global review highlights the need for better tools to understand juvenile fish habitats, which are facing increased pressure from various factors. The study recommends incorporating metrics like growth, survival, and contribution rates to assess habitat quality.
Healthy food systems: Microbial map reveals countless hidden connections between our food, health, and planet
Researchers have mapped the microbiome of agri-food systems, revealing how diverse and balanced microbes keep our food safe, nutritious, and sustainable. The map highlights areas where targeted interventions such as probiotics and biofertilizers can improve food quality and reduce antibiotic use.
Frontiers Forum Deep Dive series: Microbial map reveals countless hidden connections between our food, health, and planet
Researchers have mapped microbial networks underpinning healthy food systems, highlighting the need for integrated approaches to address climate crisis, antibiotic overuse and pesticide reliance. This work is driving microbiome-based solutions for animal, human and environmental health.
AI tool built for climate-hit fishers wins top prize at UN Summit
SmartCatch, an AI tool developed by WorldFish, has won the AI for Planet Prize at the 2025 AI for Good Global Summit. The tool helps small-scale fishers record their catches with a simple mobile phone photo, aiming to make catch reporting faster and more accurate in coastal areas with limited internet connectivity.
FAU Harbor Branch receives $1M grant to study gulf’s mesophotic coral habitats
Researchers will study how ocean currents and nutrients from land influence the health and productivity of MCEs, which support diverse marine life and important fisheries. The project aims to fill critical knowledge gaps and provide science-based solutions for environmental protection and sustainable growth in the gulf region.
Experts say seafood deregulation could impact sustainability and supply
A new executive order aims to deregulate the US seafood sector, but experts argue it will weaken scientific authority and environmental protections. The policy threatens the sustainability of wild fisheries and aquaculture development, which is crucial for food security.
FAU Harbor Branch receives grant from Chef José Andrés’ Longer Tables Fund for queen conch lab aquaculture expansion
The Queen Conch Lab at FAU Harbor Branch will establish a community-based queen conch farm in every Caribbean country to restore healthy populations and improve sustainable fishing methods. The project aims to grow up to 2,000 queen conch juveniles per year for conservation and restoration.
Fishermen in Maceió, Brazil, have higher-than-average mercury levels
Researchers found high mercury levels in fish and shellfish consumed by lagoon residents, leading to systemic oxidative stress and metabolic alterations. The study's findings suggest a link between mercury contamination and chronic diseases like diabetes and hypertension.
Nearly 40% of grilled eel products in Japanese retail market identified as American eel
A study by Chuo University reveals that American eel is widely distributed in processed eel products sold at Japanese retail stores, contradicting the country's primary reliance on Japanese Eel. The research highlights the need for sustainable use of anguillid eels beyond Japanese Eel to ensure their conservation.
Decoding the molecular commonality underlying lip hypertrophy in cichlids
Researchers discovered genes related to extracellular matrix and Wnt signaling pathway drive lip hypertrophy in East African Great Lakes cichlids. The study provides insights into the evolutionary biology of lip hypertrophy, highlighting the importance of proteoglycans and Wnt signaling pathway.
Low pH aggravates toxicity of polystyrene microplastics in crab Eriocheir sinensis
A study found that combined low pH and polystyrene microplastic exposure synergistically exacerbated oxidative damage and immune suppression in Chinese mitten crabs. Gut microbiota showed substantial functional alterations despite maintained alpha-diversity.
Why Europe’s fisheries management needs a rethink
Researchers at GEOMAR identify that EU fisheries management's reliance on national interests and ICES advice leads to overfishing, resulting in the collapse of many fish stocks. A new approach is proposed to set quotas independently of national interests and prioritize sustainable catches.
Juvenile salmon roam between salt and fresh water while exploring coast and rivers, new research finds
Juvenile salmon were found to roam miles of coastline, moving between freshwater and saltwater and exploring rivers as they go. This behavior improves their resilience by locating new habitats and reduces competition, increasing their chances of survival.
First ever global map of fishmeal and fish oil factories exposes industry's footprint
A new study reveals the global distribution of FMFO factories, highlighting Peru's high production and potential environmental impacts. The study provides a starting point for addressing these issues through more transparent data, regulation, and sustainable practices.
Paying fishers to release endangered catches can aid conservation, but only if done right
A new study found that a pay-to-release programme increased live releases of endangered species caught as bycatch, but also encouraged some vessels to increase their catches at the expense of conservation goals. Adjustments have been made to improve the programme's effectiveness.
Malaysia’s wild fish catch is stagnating while aquaculture surges, says new report
A new study reveals that Malaysia's capture fisheries have stalled despite being critical to the country's food security and economy. Aquaculture, including farmed fish and seaweed, is now driving growth with seaweed farming becoming a single largest component of aquaculture output.
Warm temperature promotes sex change in ricefield eel, a protogynous hermaphrodite freshwater fish
A study published in Water Biology and Security reveals that warm temperatures induce sex reversal in ricefield eels by expressing male sex determination genes in ovarian tissues. This process depends on Trpv4, a cation channel protein that controls calcium flux into cells.