Articles tagged with Fishing
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 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.
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.
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.
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.
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.
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.
Despite being in place to rebuild fish populations, marine protected areas have flatlined or declined adult fish populations. Strong enforcement and climate-friendly design are crucial for their success.
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 new study published in Proceedings B of the Royal Society found that every injury from rope entanglements impacts North Atlantic right whale population recovery. Modelling data shows female whales who get tangled in fishing gear are less likely to calve, potentially leading to extinction.
A study found over 40% of loggerhead sea turtles in the Mediterranean contained macroplastics, including a Halloween toy. Researchers say these turtles could be used as 'bioindicator' species to understand the impact of plastic pollution.
Researchers found that restored coral reefs can grow at the same speed as healthy reefs within four years, bringing back important ecosystem functions and habitat for marine life. The study's results show promise for reef restoration projects worldwide, but longer-term studies are needed to understand resilience under stress.
The Belt Sea population of harbour porpoises is declining at a rate of 2.7% annually due to by-catch, deoxygenation, pollution, and lack of fish. Limiting net usage or using acoustic alarms on nets could be an immediate solution to mitigate the issue.
A new analysis of 14,000 fish surveys in 216 MPAs across 43 countries reveals that no-take MPAs are effective in restoring fish populations but come at a cost to coastal communities. The study suggests multiple-use MPAs, where fishing is regulated, can be a more equitable alternative.
Local fishers in Mexico's Gulf of California respond to climate challenges through self-governance and organizational structures, with cooperative fishing organizations adopting conservation measures for specific high-value species. The study reveals tradeoffs between specialization and adaptability, suggesting that social structures c...
A new study from Norway shows that only a third of fishing ropes can be recycled in a sustainable way. The researchers analyzed 15 types of rope and ranked them according to ease of recycling, highlighting the need for better waste management practices.
Researchers found that fishers' operational decisions and social structures play a crucial role in adapting to climate change. Cooperatives can be resilient to short-term shocks, but small-scale cooperatives may become more vulnerable as climate change progresses.
Researchers found that individuals who engaged in home and wild food production (HWFP) activities exhibited improved food security 9-12 months later. Those who were newly food insecure during the pandemic seemed to be the best at recovering from food insecurity with HWFP.
A study published in Marine Policy found that spatial restrictions after Brexit led to a doubling of greenhouse gas emissions from Norway's mackerel fishing fleet. The change resulted in a significant increase in fuel usage and carbon footprint, equivalent to half a million CO2 emissions per year.
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 team of researchers tracked the rate at which great hammerhead sharks eat hooked tarpon in Florida Keys, finding a 15.3% depredation rate. The study urges ecological solutions that don't impact either species, as conservation efforts stabilize shark populations and angling becomes more popular.
A new study reveals a surprising trend in global fishing industries: the decline of catch per fisher since the 1990s, despite increasing numbers of fishermen. This decrease has significant implications for food production efficiency, marine ecosystems, and fishing communities.
A new study suggests that a cross-sectoral approach to marine protection can meet conservation targets at lower costs for all stakeholders involved. The approach minimizes the opportunity cost to each stakeholder simultaneously, resulting in more affordable protection of high seas biodiversity.
A global study reveals that shark fishing mortality is increasing globally, with over 100 million sharks killed annually, despite widespread regulations aimed at reducing finning. The study found that coastal fisheries account for 95% of total shark fishing mortality, with no decrease in catches between 2012 and 2019.
A new study uses machine learning and satellite imagery to create the first global map of large vessel traffic and offshore infrastructure, finding a remarkable amount of activity previously unknown. The analysis reveals that industrial fishing and transport activities are concentrated around Africa and south Asia.
A study led by Arizona State University found that herbivore fishing to less than 80% of their unfished density compromises reef resilience due to algae overgrowth. The research, published before regulatory decisions in Hawai'i, highlights the critical role of herbivores in maintaining coral reef health.
A new catalyst developed by Northwestern University chemists can break down Nylon-6, a common plastic found in fishing nets, carpet, and clothing, in just minutes. The process does not generate harmful byproducts and is practical for everyday applications.
Rising sea temperatures in the Mediterranean may drive juvenile bluefin tuna out of their nurseries, where they'll be caught in existing fisheries, requiring adaptions to fishery methods. The research found that waters above 28 degrees Celsius will adversely impact bluefin growth.
A new study reveals that shipwrecks are providing a sanctuary for fish, corals, and other marine species in areas open to destructive bottom towed fishing. Marine life density is significantly higher within wreck sites than in control areas.
Researchers found 22 globally threatened elasmobranch species in Cyprus' coastal waters, with simple measures like limiting net lengths crucial for sustainability. Local authorities have banned trading of 15 species, and conservation efforts are underway to protect the marine ecosystem.
Researchers at UMass Amherst have tracked tarpon migration patterns using acoustic telemetry, revealing two distinct subgroups of the species. The study, which gathered data over five years, has significant implications for conservation efforts, as tarpon are listed as vulnerable due to fishing, habitat loss, and degraded water quality.
Rising Arctic temperatures are causing a mass migration of zooplankton, which Pacific right whales rely on for food. This shift is also drawing industrial fishing fleets northward, increasing the risk of ship collisions and gear entanglements.
A study by the University of Washington and NOAA found that upgrading a culvert in Washington improved fish traffic for four species of interest: cutthroat trout, coho salmon, rainbow trout, and sockeye salmon. Meanwhile, a smaller culvert replacement had less impact on fish populations.
A recent study by the University of Exeter and Wildlife Conservation Society found tens of thousands of endangered sharks and rays are caught annually off the Republic of the Congo. Most of these species are juveniles and vulnerable to extinction.
During the pandemic, New Yorkers increased their participation in wild and backyard food activities such as gardening, hunting, and foraging. Despite a general worsening of diets, these activities may have contributed to buffering those effects, with people consuming home-produced eggs and meat, and backyard-grown fruits and vegetables.
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 study of 288 skeletons and rock art reveals a surprising consistency in rates of violence over time, with an increase in lethal violence during the Formative Period. The absence of centralized political systems may have contributed to these violent tensions.
Sperm and northern bottlenose whales frequently feed on live halibut escaping from a deep-sea trawler net. The study found that these whales were only spotted when the catch was Greenland halibut, not redfish or thorny skate.
Professor Vincent Nijman warns that Indonesia's failure to enforce protection laws for whale sharks puts the species at risk. The study found that many landed shark are immature and still weigh over two tonnes, with some ending up in trade despite being legally protected.
Entanglement with lost and discarded fishing gear accounts for most turtle strandings and injuries in the Maldives. The study reveals a high prevalence of ghost net entanglement in sea turtles across 12 years.
A new study using Marine Monitor highlights the need for systems that can track boater activity in small, coastal MPAs. The findings show that traditional vessel tracking systems can miss up to 93% of boater activity at highly urban MPAs.
Researchers from the University of Portsmouth found that biodegradable fishing gear (BFG) does not significantly reduce the cost of ghost fishing due to decreased fishing efficiency. The study suggests that implementing BFG could still have economic benefits, but only if it can achieve similar fishing efficiency as traditional gear.
A new study reveals that Amazon river dolphins are under threat from fishing, proposed dams, and dredging, with their home ranges spanning over 50km. The dolphins were found to be on average 252km from the nearest proposed dam and 125km from the nearest dredging site.
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 Rutgers-led genetic analysis reveals that Atlantic cod evolved new traits in response to decades of overfishing, with the fish potentially rebounding and providing a sustainable food source. The study shows that small changes in many genes led to the evolutionary adaptation.
Researchers at Flinders University identified rare images of Moluccan vessels in NT rock art paintings, potentially providing evidence of visitors from Southeast Asia to northern Australia. The depictions feature distinctive shape and configuration, indicating a degree of intimate knowledge of the craft.
The Save Our Seas Foundation has awarded a record 75 grants to support shark and ray conservation projects worldwide. The foundation's 20th anniversary year highlights growing commitment to protecting these vital ocean species.
A toolkit for coral gardening could accelerate reef recovery in Saudi Arabia and globally. The Maritechture TM system includes tiles, stackable crates, and coral pods to create artificial reefs that attract natural coral settlement.
Two species, South American sea lion and fur seal, are primarily involved in interactions with fisheries and aquaculture activities. The economic losses to fisheries related to sea lion depredation are low, while incidental capture and mortality of seals remain unknown.
A recent study published in The Science of Nature found that parasites and body condition are crucial factors in determining the vulnerability of fish to angling. The research revealed that fish with high body condition and parasites, as well as those with low body condition but no parasites, were less likely to be caught by anglers.
Researchers identified fluctuations in climate and ocean conditions as the main drivers of entanglement risk to whales in Dungeness crab fishing gear. The study provides new tools for managing fisheries while minimizing impact on whale populations.
A new international study reveals that global squid fisheries are operating largely in unregulated areas, with 86% of fishing efforts recorded between 2017-2020. This expansion poses significant challenges to fisheries sustainability and resource equity.
Bowhead whales are shifting their migration patterns due to declining sea ice in the Arctic, affecting their long-term health and impact on Indigenous communities. The lack of ice is causing changes in bowhead availability for hunters, leading to competition for resources and increased human interaction.
A study by University of Gothenburg researchers identifies two distinct types of cod, 'offshore cod' and 'coastal cod', genetically adapted to different environments. The coastal cod remain in the fjords, but their adult stage is uncertain, with possible spawning locations still unknown.
A global survey of large carnivore attacks found that attacks in high-income countries occurred mostly during recreation, while those in low-income countries were linked to livelihood activities. The study also highlighted the importance of tailored approaches to prevent such attacks.
Researchers found muskies' size, boldness, and exploration levels are linked to their likelihood of striking. Anglers should prioritize catch-and-release and best practices to protect these traits.
Research from the University of California, Santa Cruz, found that abundant krill supplies lead to more humpback whale pregnancies, while scarcity results in fewer pregnancies. The study suggests reduced krill stocks due to climate change and industrial fishing will impact humpback whale populations.
A new study used satellite data and public registry information to track the changing identities of commercial fishing vessels, revealing that nearly 20% of high seas fishing is carried out by unregulated or unauthorized vessels. The study found hotspots of potential IUU fishing in the Southwest Atlantic Ocean and western Indian Ocean.
A new study by Environmental Working Group scientists reveals that consuming one serving of freshwater fish per year is equivalent to ingesting water with high levels of the toxic chemical PFOS for a month. The study analyzed data from over 500 fish samples and found median amounts of PFAS in freshwater fish to be 280 times greater tha...
Researchers have documented cases of Japanese macaques hunting and eating fish in the Kamikochi region of Japan, suggesting an evolutionary adaptation to harsh winter conditions. The behavior appears to be an extension of existing feeding habits on vegetation and aquatic plants, with potential implications for future generations.