Articles tagged with Fisheries
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.
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.
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.
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.
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.
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.
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.
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.
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.
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...
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%.
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.
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.
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.
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 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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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 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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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 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.
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.
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.
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.
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.
A multidisciplinary survey in the eastern Indian sector of the Southern Ocean found that the southern boundary of the Antarctic Circumpolar Current has shifted southward, causing a change in water temperature and mac zooplankton composition. The survey also estimated the biomass of Antarctic krill in the area, with comparable results t...
A recent study published in the ICES Journal of Marine Science reveals that bigeye tuna, yellowfin tuna, and swordfish source between 50-60% of their diet from the twilight zone. This suggests that any changes to the twilight zone's food web could have profound implications for these fisheries.
A study successfully uses CRISPR/Cas9 to disrupt the tyrosinase-related protein B (tyrb) gene in grass carp, resulting in the generation of red-eyed golden mutants. This innovation offers a solution to address genetic degradation and improves ornamental value and disease resistance.
A study published in Ocean and Coastal Management reveals that artisanal fishers can be almost as accurate as satellites in producing environmental data. The researchers mapped seagrass beds along the coastlines of five Greek islands, with fishermen's maps showing an average accuracy of 78%, compared to 11% more than government policies.
Despite decades of overfishing warnings, Southeast Asia's catch fisheries have maintained biodiversity and ecological health, with a three-fold higher ratio of underfished stocks compared to the global average. This study highlights the benefits of non-species-selective multispecies fishing practices in promoting sustainable fisheries.
Retention bans are a good first step in addressing shark overfishing, but won't be enough to prevent continued decline. Small sharks and threatened species are most likely to die after being caught, highlighting the need for complementary strategies like area-based fishing restrictions and catch quotas.
Climate change drives large increases in electricity demand and costs in Texas due to extreme temperatures. Meanwhile, atmospheric rivers become more frequent, larger, and moister globally. Diagnostic studies also predict malaria outbreaks with five-month lead time using sea-surface temperature anomalies.
Researchers studied pumice rafts from the 2021 Fukutoku-Oka-no-Ba eruption in Japan, finding three phases of evolution involving rounding, fragmentation, and biodiversity increase. The study provides valuable information for mitigating the impact of future eruptions on shoreline communities.
A £4.25m project will investigate 'tipping points' in marine ecosystems, which could have devastating consequences for the UK's fishing industry and global biodiversity. The TiMBER project, led by the University of East Anglia, aims to develop tools to assess risks and predict changes in marine biogeochemistry.
A collaborative assessment reveals California marine fishery species are highly vulnerable to climate change. The study highlights the economic and cultural importance of these species, emphasizing the need for conservation efforts.