Articles tagged with Fisheries
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.
A study evaluated California's marine reserve network, finding that MPAs increase fish biomass across multiple ecosystems, especially in targeted species like rockfishes. Stronger protections and habitat diversity emerged as key predictors of success.
Researchers at Hiroshima University have discovered complex interactions between Pseudo-nitzschia groups and other algal species, suggesting salinity has a more significant influence than previously thought. This understanding is crucial for predicting harmful algal blooms, which cause substantial damage to the aquaculture industry.
A new species of giant isopod, Bathynomus vaderi, has been discovered in Vietnamese waters, reaching lengths of up to 32.5 cm and weighing over a kilogram. The species was named after Darth Vader's iconic helmet and has become an expensive delicacy in Vietnam.
Researchers successfully rehabilitated a decommissioned stormwater management pond, creating a habitat for 16 native fish species. The pond provided connectivity between the river and lake, allowing fish to freely move between the two, indicating potential as important spawning grounds.
A new study examines legislation and conservation efforts in the Mediterranean region to protect over 80 shark and ray species. The research reveals substantial differences in countries' efforts, with European Union countries leading implementation of measures.
Research shows that juvenile sablefish are increasingly competing with young salmon for food in coastal waters off the Northwest, potentially putting salmon at a disadvantage. This overlap could be exacerbated by ocean warming and climate change, which already threaten salmon survival.
A new study published in Marine Resource Economics found that a decline in healthy coral reefs can lead to substantial losses in fisheries. The research analyzed nine fisheries dependent on Australia's Great Barrier Reef and predicted lower fishing yields if the restoration of coral reefs is not prioritized.
Scientists have developed a model to capture at least 100 million metric tons of CO2 annually from fish farms, potentially offsetting their carbon footprint. The approach, which involves adding iron to increase alkalinity and enhance carbonate saturation levels, could be cost-effective and efficient.
A large-scale pre-Columbian fish-trapping facility was discovered in the Crooked Tree Wildlife Sanctuary in Belize, dating back to the Late Archaic period around 2000-1900 BCE. The facility, which included a network of linear channels and ponds, would have yielded enough fish to feed up to 15,000 people year-round.
A new study led by the University of Washington found that only about 7% of areas at highest risk for whale-ship collisions have any measures in place. The team identified high-risk regions, including coastal areas along the Mediterranean, Americas, southern Africa, and parts of Asia, where whales and ships are most likely to meet.
A new study highlights the pressures human activities place on tropical marine ecosystems, with fishing techniques and tourism posing the greatest threat. The research provides insights into the impact of various activities on different habitats, shedding light on how to ensure sustainable management.
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.
A study published in Water Biology and Security reveals spatial and temporal patterns of biodiversity in four taxonomic groups along the Za'gya Zangbo River. The findings emphasize the importance of considering multiple biological groups in biomonitoring high-altitude rivers, and highlight areas that require targeted conservation efforts.
Research reveals two species of sardine in the California Current, with Japanese sardines arriving on the West Coast around 2022. The discovery highlights the impact of marine heatwaves and changing ocean conditions on fish distributions.
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.
Researchers analyzed DNA in fecal samples to determine the diet of Alaska and southern resident killer whales. They found that both populations prefer salmon, but differ in when they switch to hunting other fish species. The study provides key insights into the delicate balance between regional abundance of different fish species.
A team of researchers from China successfully created plant-based simulated yellow croaker meat tissues using dual-nozzle 3D printing. The study found that the texture characteristics, moisture distribution, and nutrient content of the simulated fish were close to those of real fish, with a printing accuracy of over 90%.
New research finds women make up 50% of post-harvest fisheries and aquaculture workforce, yet often remain invisible, unpaid or underpaid. The study calls for policy changes to address social justice dimensions of technology development.
Brooke Flammang's Fluid Loco Lab at NJIT will develop non-invasive tag attachment technology for near real-time tracking of North Atlantic right whales. The project aims to improve conservation and regulation policy decisions with accurate predictions on whale distribution and habitat use.
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.
The article reviews major research results on grass carp morphology, cytogenetics, molecular genetics, and germplasm resource genetic improvement. Key findings include the origin and geographical distribution of grass carp and its genetic improvement technology, including gynogenesis and hybridization techniques.
Researchers at the University of Tokyo have discovered a new species of starfish off the coast of Japan, shedding light on the country's marine biodiversity. The newly named Paragonaster hoeimaruae is a distinctive red and beige color with five arms and spans over 10 centimeters.
Climate change is expected to shift the distribution of eight commercially important marine fish and invertebrate species northwards due to warmer water temperatures and loss of sea ice habitat. This could lead to changes in the abundance and economic viability of fisheries, with some species potentially benefiting while others decline.
Researchers have discovered a method to identify shark species using medical gauze from first-aid kits after bite incidents. This approach can provide accurate and timely information on species, aiding prevention measures and reducing incidents.
A global study by Hawaiʻi Institute of Marine Biology demonstrates the benefit of marine protected areas to recreational fisheries, producing more 'trophy-size' fish just outside fully protected areas. The effect is growing stronger over time, with tangible benefits materializing in decades.
New research reveals oyster sanctuaries contain more abundant populations of oysters and other animal life, despite the presence of parasites. The study found that these areas support higher oyster densities and habitat quality than nearby harvest sites.
Researchers used drones to map loko iʻa at the community level, providing insights into flooding and future sea level rise impacts. Drones accurately estimated observed flooding during extreme high tide events, while LiDAR models overestimated flooding by two to five times.
A new Oregon State University study found that young Pacific cod in near shore safe havens were severely affected by recent marine heat waves in the Gulf of Alaska. The researchers estimated that only the largest 15-25% of the island's cod population survived, leading to significant changes in abundance, growth rates and diet.
This study introduces modern innovations in Chinese aquaculture, focusing on genetic breeding, fertility biotechnology, polyculture, eco-agriculture, smart aquaculture, and eco-engineered aquaculture. The research proposes ten paradigm changes to promote sustainable aquaculture development and global food security.
Researchers have established a highly permissive cell line, GiCS, from gibel carp skin tissue, offering robust tools for early detection and study of Carassius auratus herpesvirus. A novel diagnostic method utilizing droplet digital PCR allows for sensitive detection of CaHV in infected fish on the first day post-infection.
Researchers confirm Atlantic cownose ray (Rhinoptera bonasus) has made a novel migration to Bermuda, using citizen science and morphological/data analysis. The species likely resides in Bermuda for extended periods due to the islands' mild sea temperatures.
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.
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.
The report presents gained knowledge from stakeholders and parties on challenges in Greenland marine research and insights for developing East Greenland environments. The seminar and workshop emphasized the need for forward-looking approaches to inform decision-makers.
Researchers have analyzed over 44,000 high seas survey gear hauls across the North Pacific to create detailed maps showing salmon species' ocean habitats and temperature tolerances. The study highlights varying cold-water tolerance among salmon species, with implications for climate change adaptation.
Researchers used newly analyzed data to predict and help avoid whales' harmful exposure to commercial fishing and vessel strikes. The study mapped the density of one of the most endangered large whale species worldwide, the North Atlantic right whale.
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 study analyzing canned salmon from 1979 to 2021 found stable anisakid worm levels in coho and sockeye salmon, while pink and chum salmon showed a rise. This suggests that the marine food web has adapted to changing conditions, with rising parasite levels indicating potential ecosystem shifts.
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 new study shows that restored salmon habitat should resemble financial portfolios, offering fish diverse options for feeding and survival. This diversity helps the fish weather various conditions as the climate changes.
A new study reveals that marine heat waves disrupt the ocean food web in the northeast Pacific Ocean, shifting energy and impacting predators and prey. Gelatinous zooplankton thrive during heat waves, drawing energy out of the ecosystem and potentially affecting fish and marine mammals.
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.
A group of marine biologists challenge the notion of a stable white shark population shifting eastwards along South Africa's coastline. They argue that data cannot support population stability or redistribution claims, citing issues with dataset presentation and the onset of declines predating orca appearances.
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...
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 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.
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.