Fishing
Articles tagged with Fishing
Warm-bodied sharks and tunas face “double jeopardy” in warming seas – new research
Research reveals warm-bodied fish like sharks and tunas burn nearly four times more energy than cold-blooded counterparts, exacerbating the impact of warming oceans. As a result, these species are facing an increasing risk of overheating and habitat loss.
Painkillers prevent pain responses in Norway lobsters
Researchers discovered that common human painkillers, such as aspirin and lidocaine, prevent Norway lobsters from exhibiting painful responses to electric shocks. This finding highlights the need for more humane methods of killing crustaceans, which may be phased out in favor of gentler alternatives.
Risk of whale entanglement in fishing gear tied to size of cool-water habitat
Research finds that humpback whales face a higher risk of getting entangled in fishing equipment during years with lower availability of cool-water habitat. The Habitat Compression Index can predict ocean conditions up to a year in advance, suggesting its potential as an early warning system for fishery management decisions.
Yangtze River fishing ban halts seven decades of biodiversity decline
A recent study found that the Yangtze River fishing ban has halted seven decades of biodiversity decline, triggering an initial recovery in fish resources. Key indicators such as biomass, body condition, and species diversity have shown significant improvement after full enforcement of the ban.
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.
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%.
Freshwater browning threatens growth and populations of economically important fish, McGill researchers say
McGill researchers found that freshwater browning is stunting some fish species' growth, shrinking others' populations, and altering fish communities. This phenomenon has broad impacts on biodiversity, affecting economically important fish species such as northern pike and walleye.
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.
Angling best practices are essential to promote shark survival
A new study by University of Exeter researchers found that most sharks in UK waters survive catch-and-release fishing when angling best practices are followed. The study tracked the behaviour and survival of over 70 blue, porbeagle, and tope sharks caught in recreational fishing in the British Isles.
Fishing for a better future: New process to recycle plastic waste
A new method to recycle PA-66, a type of polymer found in fishing nets and automotive parts, has been developed. The process involves introducing melamine into melted waste, resulting in a nylon material with improved properties that can be reprocessed up to three times.
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.
Ancient fishing nets resurrected from pottery using X-ray CT: a world-first achievement by Kumamoto University researchers
A team of researchers led by Professor Hiroki Obata reconstructed the structure of prehistoric fishing nets from ancient pottery using X-ray CT. The study revealed a rich diversity in net-making techniques between regions and highlighted the importance of sustainability practices in ancient cultures.
FAU awarded US EPA grant to integrate genetics in Florida bay sponge restoration
Researchers will analyze genetic diversity and structure of four key sponge species to enhance resilience in restored populations. The project aims to build ecological resilience in vulnerable marine environments through a genetics-based approach.
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.
1 in 8 Italian cetacean strandings show evidence of fishery interactions, with bottlenose and striped dolphins most commonly affected, according to analysis across four decades of data and more than 5,000 strandings
A study analyzing four decades of Italian cetacean strandings reveals that bottlenose and striped dolphins are most commonly impacted by fishery interactions. The research, published in PLOS One, highlights the need for conservation efforts to mitigate these effects.
More scrutiny of domestic fishing fleets at ports could help deter illegal fishing
A new study reveals that increased scrutiny of domestic fishing fleets at ports could help deter illegal fishing. The Port State Measures Agreement, which requires foreign vessels to undergo inspections when landing their fish in a country, has led to more vessels traveling longer distances to reach ports within countries that have rat...
More scrutiny of domestic fishing fleets at ports could help deter illegal fishing
A new study found that as more countries adopted the internationally binding Port State Measures Agreement, foreign fishing vessels needed to travel twice as far to reach a non-PSMA country. Meanwhile, domestic vessels' share of port visits globally rose from 31% in 2016 to 46% in 2021.
Sustainable aquaculture as a contribution to food security? Leopoldina webinar on the conditions in Germany and Brazil
The Leopoldina webinar discusses the conditions and practical recommendations for sustainable freshwater aquaculture in Germany and Brazil. The report highlights the potential of this method to contribute significantly to global food security, reduce water and land consumption, and promote a circular economy.
Loss of natural areas and introduction of exotic species reduces fishing yields in the Paraná River in Brazil
A study analyzing data from 2002 to 2022 found a 50% decline in economic gains from fishing due to the introduction of exotic species. The size of native fish decreased, while invasive species increased in body size and abundance.
Study on “blue economy” shows interdependence between Brazil’s coastal and inland regions
A Brazilian study maps the direct and indirect impacts of marine resource-dependent economic activities, revealing strong connections between coastal and inland regions. The research highlights the importance of the blue economy in Brazil's GDP and employment, with regional specializations varying across states.
Live well temperature variations stress out largemouth bass, study finds
Researchers found that live well temperatures fluctuate drastically during tournaments, causing physiological stress and longer recovery times for largemouth bass. This study highlights the importance of optimizing live well conditions to minimize mortality rates and ensure sustainable fisheries.
Study finds early signs of widespread coastal marsh decline
Researchers developed a model to detect early signs of marsh decline using satellite observations, identifying vulnerable areas along Georgia's coast. The study found belowground biomass has declined across 72% of Georgia's coastal marsh since 2014.
Nearly five million seized seahorses just ‘tip of the iceberg’ in global wildlife smuggling
A study analyzing online seizure records found over 300 seizures of dried seahorses in 62 countries, with most occurring in transit or destination countries. The illicit trade is estimated to be worth CAD$29 million over 10 years, and emerging routes involve Europe and Latin America.
Scottish shrimp study illuminates new potential for bait-less fishing
A study by the University of Exeter and Fishtek Marine found that illuminated pots caught significantly more northern shrimp and attracted fish, raising hopes for sustainable fisheries. The 'attraction cascade' creates a self-baiting pot, potentially leading to new low-impact trap fisheries.
Triassic fossil reveals nature’s best jaw for hunting fast fish
Scientists have discovered a Triassic-era fossil with an elongated jaw structure, similar to modern-day pike and needlefish. The findings suggest that different species independently evolved similar jaws hundreds of millions of years apart, highlighting the universal problem-solving strategies in nature.
Amazon research tackles £50 million parasite devastating fish farmers around the world
A mysterious parasite is devastating fish farms globally, causing £50 million in losses annually. Researchers have discovered a new gene regulation process that could lead to the development of gene-based vaccines.
How proactive salmon conservation in the North Pacific can deliver global benefits
A new study reveals how proactive salmon conservation in the North Pacific can protect biodiversity and advance global conservation goals. The stronghold strategy aims to proactively protect iconic salmon systems that sustain healthy watersheds, safeguarding food security and mitigating climate change.
Deep-dive dinners are the norm for tuna and swordfish, MIT oceanographers find
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.
Climate cost of global trawling still uncertain
Researchers say the amount of carbon released by seabed fishing worldwide is uncertain and must be urgently investigated. The Convex Seascape Survey found that vessel and gear sizes vary greatly from country to country, leading to large inaccuracies in global estimates.
Marine animals help solve ocean issues
Marine animals are being used to gather valuable data on human impact on the ocean. Biologging, attaching sensors to wild animals, provides insights into environmental conditions and behaviors. The goal is to develop an 'Internet of Animals' with shared standards for data sharing, enabling targeted policies and a sustainable coexistence.
Sharks are dying at alarming rates, mostly due to fishing. Retention bans may help
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.
Shark activity in South African reef revealed by citizen scientist scuba divers
Citizen science data from scuba divers reveals distinct seasonal patterns among shark species, including hammerhead sharks and tiger sharks. The study also identified changes in shark populations over time, with some species increasing in abundance while others decrease.
Clues of advanced ancient technology found in the Philippines and Island Southeast Asia
Researchers at Ateneo de Manila University discover evidence of advanced seafaring and boatbuilding in the Philippines and Island Southeast Asia dating back to around 40,000 years ago. Microscopic analysis of stone tools reveals clear traces of plant processing, indicating a high level of technological sophistication.
Scientists call for efforts to protect habitats of critically endangered shark species
A new study suggests that up to 70% of suitable habitats for the critically endangered whitefin swellshark will be lost over the next 75 years due to predicted ocean changes. The researchers believe that Australia's proactive conservation measures, such as marine protected areas, offer hope for the species' survival.
Study takes a ‘bite’ out of shark depredation using citizen science
A citizen science study led by researchers from Florida Atlantic University has identified the most common shark species responsible for depredation in Florida's recreational fisheries. The study found that snapper-grouper species were the most frequently depredated target species group, while bull sharks and sandbar sharks were the mo...
Half of the fish you eat comes from the Great Barrier Reef’s marine reserves
A new study reveals that marine reserves on the Great Barrier Reef supply nearly half of the region's coral trout catch, contributing significantly to sustainable fishery yields. The protected areas also ensure a higher reproductive output and more resilient coral reef ecosystems.
Baleen whales in the northwest Atlantic are particularly vulnerable to boat injuries in densely inhabited regions, shipping routes, and fishing grounds
Baleen whales face increased risk of boat injuries in densely inhabited regions due to vessel activity. The study analyzed changing whale distributions and reported incidents relative to vessel presence in the Northwest Atlantic.
Uncovering hidden consequences of catch-and-release sport fishing
A recent study by UMass Amherst and international partners found that giant trevally sport fishing in Seychelles is sensitive to catch-and-release pressure. The research used acoustic telemetry and mark-and-recapture programs to track fish behavior, revealing potential unintended consequences of the practice.
National TRAP Program funds large-scale cleanup of discarded fishing gear
The National TRAP Program has awarded $1.4 million to fund 11 projects in nine US states and Palau to remove derelict fishing gear from coastal waters. This initiative aims to standardize data collection practices and establish a national database to evaluate the environmental and economic impacts of these efforts.
Long-distance friendships can provide conservation benefits
A Washington State University-led study found that individuals with more long-distance friends are significantly more likely to participate in sustainable fisheries management activities, such as beach cleanups and reporting illegal fishing practices. The research highlights the potential benefits of building cross-community relationsh...
Decline in West African coastal fish stocks threatens food security and livelihoods
A new study reveals significant declines in West African coastal fish stocks, with key local species experiencing reduced catches and smaller fish sizes. Local knowledge from fishermen and fishmongers highlights the impact of semi-industrial fishing practices on marine ecosystems.
Hokkaido University and JAL Group to commence world's first regular flight-based ocean observation
The collaboration aims to detect red tide occurrences early and provide information to fisheries stakeholders to prevent damage to marine environments. The system will also be used for broader environmental monitoring of forests and oceans, improving accuracy through repeated validation.
15,800-year-old engraved plaquettes from modern-day Germany depict fishing techniques, including the use of nets, not previously known in the Upper Paleolithic
Researchers discovered ancient plaquettes depicting net-based fishing methods in the Magdalenian site of Gönnersdorf, Germany. The findings provide insights into Upper Paleolithic fishing practices not previously known.
Plastic pollution sounds just like food to deep-diving whales
A new study by Duke University finds that deep-diving whales confuse plastic debris with prey items, as its acoustic signature mimics squid. Researchers tested various types of plastic trash and found strong similarities in their acoustic signals compared to whale prey, highlighting the need for more sustainable materials.
New study reveals key actors in global transshipment, boosting seafood transparency
A new study identifies 324 owners of globally used reefers, 10 of whom account for nearly a quarter of all transshipment events. The research provides unprecedented transparency into the seafood value chain, allowing for improved governance and oversight of transshipment practices.
Tropical and subtropical industrial fisheries account for about 70% of the methylmercury fished from the ocean
Industrial fishing practices in tropical and subtropical waters release high levels of methylmercury into the ocean. The majority of this mercury is found in large pelagic fish like tuna, which are then consumed by humans. This can lead to developmental delays in children and impaired cardiovascular health in adults.
Leading scientists redefine ‘sustainability’ to save the ocean and feed a hungry and warming planet
A new set of 11 golden rules aims to minimize ocean destruction and preserve fish populations. The rules prioritize minimizing impacts on marine species, habitats, and human communities, while supporting sustainable fishing practices.
Even marine animals in untouched habitats are at risk from human impacts
A new study of 21,000 marine animals reveals that even pristine habitats are at risk due to human activities and climate change. The research highlights the impact of cumulative human stressors on global marine fauna, emphasizing the need for targeted conservation efforts.
Historic map reveals how mussel farm is bringing shellfish reefs back to the seabed
A UK-based study reveals that an offshore mussel farm is reviving shellfish reefs off the English south coast, a process previously unseen in 150 years. The research found mussels deposited on the seabed create habitats for commercially important species like European lobsters and brown crabs.
Fishing is causing frightened fish to flee when they should flirt
Researchers found that fishing impacts not only caught fish but also those left behind, causing widespread behavioral change. Single males at fished sites were twice as likely to flee and took two and a half times longer to return to their territories than fish at unfished sites.
Big sharks have a big impact — and a big problem
A new study reveals that large apex species like tiger sharks and great whites are critical to healthy oceans, but their populations have plummeted by 71% in the past 50 years. Conservation efforts must prioritize protecting these ecological roles to maintain ocean balance.
Important region of marine ecosystem in Southwest Atlantic is shallower than expected, study finds
A new study has determined the vertical limits of the marine environment in the Southwest Atlantic, revealing that the mesophotic zone extends to a depth of between 15m and 18m. The research found distinct differences in fish diversity and species composition between the shallow and mesophotic zones.
Artificial light is a deadly siren song for young fish
New research reveals that artificial light at night (ALAN) attracts larval fish to artificially lit environments, reducing their chances of survival. ALAN has been shown to lower fish growth rates, metabolic rates, and overall survival, with serious consequences for fish conservation.
New research details economic, nutritional impact of global recreational inland fishing
New research reveals that global recreational inland fishing contributes 11.3% to freshwater fish catch worldwide and has an estimated $9.95 billion value. The study challenges the notion of 'recreational' fishing as a food resource, highlighting its complex roles in nutrition, economics, and human science.
Early summer fishing can have an evolutionary impact, resulting in smaller salmon
A genetic study found that early summer fishing in the Baltic Sea targets larger salmon, leading to smaller fish and reduced population diversity. The study suggests that intensive fishing in the early season can cause evolutionary changes, affecting the age and size of Atlantic salmon before maturity.
Understanding the mechanisms for local amplification of 2024 tsunamis in Iida Bay
The study identified two main reasons for the amplification of tsunamis: a lens effect due to shallow waters and wave refraction, as well as diffraction at capes and multiple reflections. These local conditions contributed to the high tsunamis in Iida Bay.
Catch and release can give sea turtles the bends #ASA186
Researchers evaluated the health of accidentally caught sea turtles using ultrasound imaging to monitor gas levels in their organs. Veterinarians found that ultrasound brightness could be used to differentiate gas levels over time, helping them predict treatment outcomes for bycaught sea turtles.
To bend the curve of biodiversity loss, nature recovery must be integrated across all sectors
Research suggests mainstreaming biodiversity targets into policies and plans across sectors has been ineffective due to non-binding commitments and insufficient resources. The study highlights the need for top-down regulation and incentives to encourage greater commitment to nature recovery.
Scientists create octopus survival guide to minimize impacts of fishing
A team of Australian scientists has developed a step-by-step guide to ageing octopus, using growth rings on beaks and stylets to validate age. This tool helps estimate growth rates, reproduction, and maturity, ensuring sustainable fisheries and conservation.