Articles tagged with Marine Fishes
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A new study by the University of British Columbia suggests that BC's ocean contributed around $4.9 billion to provincial GDP in 2015, with marine transport sector making the highest contribution. However, this estimate is likely an underestimate due to excluded ecosystem services and cultural value.
Researchers at Radboud University found that larger fish and those with large cells are more sensitive to oxygen stress in warm water. Freshwater fish appear to be more tolerant of oxygen-depleted water than marine fish, likely due to different selection pressures during their evolutionary history.
Researchers found 61 out of 86 species threatened with extinction, with coastal sharks facing greatest conservation concern. Increased protections and international trade regulations are crucial to prevent extinctions among these species.
A global team of experts identifies 15 emerging issues threatening marine and coastal biodiversity, including lithium extraction and deep-sea fishing. The horizon scan highlights the importance of assessing these issues now to drive policy change and protect ecosystems.
A large-scale study by Rutgers researcher Alan Robock and colleagues found that even small nuclear wars would rewire the physical, biological, and ecological states of oceans. The study simulated a U.S.-Russia war and several smaller India-Pakistan wars, calculating the effects of atmospheric soot on ocean functions.
A new UBC study finds that southern resident killer whales have been in an energy deficit for six of the last 40 years, with three recent years (2018-2020) being particularly dire. The researchers attribute this decline to lower Chinook salmon abundance and size, which are the primary food source for these whales.
Two Rutgers studies project that offshore wind farms will reduce Atlantic surfclam catches by 3-15%, with losses reaching 25% in New Jersey. A spatially-explicit model, SEFES, predicts impacts on fishing behavior and revenue.
A new study from Oregon State University suggests that the gelatin in Pacific whiting skin has anti-aging properties, preventing wrinkles caused by ultraviolet radiation. The researchers found a positive response in a human cell model system, providing evidence for further research.
A new study has found that invasive subtropical corals can survive and thrive in coastal Sydney, raising concerns for existing coral species. The research suggests that warming temperatures could kill off the native corals, highlighting the need to protect Australia's reefs from climate change.
Researchers evaluated the toxicological effects of BaP on bay scallops, finding increased immune response-related parameters with time at higher concentrations. The study suggests that BaP dampens the immune response of scallops and decreases their capacity to respond to oxidative stress.
A new study reveals that foreign fishing fleets and international seafood trade are taking fish nutrients away from malnourished populations, exacerbating nutrition insecurity. The research found that over 60% of countries receive net gains in fish-derived nutrients through international trade, while a third have net losses.
Researchers found that over 99.6% of caught scallops were in pots with lights, and video footage shows the shellfish piling into the pots. This novel method could be a game-changer for sustainable seafood production and reduce environmental impact.
Conservation efforts have made progress along the African east coast, but tens of thousands of sea turtles still die each year. The study highlights the importance of local knowledge and community engagement in turtle conservation.
Researchers at UBC's Sea Around Us initiative identified four high-traffic areas in the Pacific Ocean as crucial for conserving large pelagic fishes like tuna and swordfish. By analyzing migration routes, genetic sequencing studies, and catch distribution maps, they pinpointed 'blue corridors' where strict fisheries management measures...
A new study using environmental DNA reveals a 16% higher fish diversity on coral reefs than traditional visual observations. The approach detects pelagic, reef-bound, and cryptobenthic species that are difficult to spot by divers.
A new study by UBC researchers found that climate change is altering the species served on Vancouver restaurant menus, with warmer waters favoring Humboldt squid and sardines. This shift may lead to reduced availability of sockeye salmon, making way for other fish species.
Researchers developed global forecasts that can provide up to a year's notice of marine heatwaves, which can dramatically affect ocean ecosystems. The forecasts help fishing fleets, ocean managers, and coastal communities anticipate the effects of marine heatwaves, reducing ecological and economic impacts.
Researchers recommend organizing targeted culls and creating a supply chain to make lionfish a component of the region's fishing industry. They also call for legal changes to permit lionfish removals across the Mediterranean and inclusion on the EU list of invasive species of concern.
The BfR has developed a novel testing strategy to detect ciguatoxins in fish, which enables the reliable identification of seafood poisoning cases. This method combines cell-based assay tests and liquid chromatography-mass spectrometry (LC-MS/MS) for precise detection.
A new study provides evidence of growth limitations in Antarctic fish, which have adapted to survive in freezing temperatures. Despite similar ecological conditions, these fish consume less food and grow at half the rate of temperate water cousins when held at the same temperature.
Researchers at Lund University have created a scientifically accurate reconstruction of an ichthyosaur, a prehistoric marine reptile that lived for 160 million years. The team used clay sculpturing and 3D printing techniques to create the life-size model, which is now on public display.
Scientists are creating a global audio collection of aquatic life to monitor changing marine life and identify new species. The GLUBS platform uses ocean hydrophones, AI, and citizen science to analyze soundscapes and track biodiversity on reefs and other ocean habitats.
A study led by Florida Atlantic University reveals a vast amount of microplastics in the entire water column of an offshore plastic accumulation zone, with small microplastics being critical and underexplored. The findings highlight the importance of understanding the impact of these tiny plastics on marine ecosystems.
Research confirms that fish become sexually active and spawn due to growth-induced respiratory stress. The study found a consistent metabolic ratio across 133 species of fish, which supports the idea that reproduction is initiated by changes in oxygen supply and demand.
Researchers found that ocean acidification and global warming alter fish behavior in groups, affecting their ability to acquire food and evade predators. This disruption could lead to species extinction as tropical fish struggle in new temperate areas.
A new study projects that farmed seafood supply will drop by 16% globally by 2090 if no action is taken to mitigate climate change. The industry is vulnerable to the effects of climate change, and some regions could see a decline in mariculture production by up to 90%.
A new study from Australian Institute of Marine Science reveals that reef fish such as emperors, tropical snappers, and rockcods play a crucial role in controlling crown-of-thorns starfish numbers on the Great Barrier Reef. By removing these fish species, the abundance of coral-eating starfish increases.
New research explores how climate extremes affect the West Coast Dungeness crab fishery and its impact on whale conservation. The study recommends combining improved forecast systems, technological innovations, and understanding human behavior to reduce whale entanglements.
A new marine reptile fossil from 130-million-year-old rocks in Colombia has revealed a unique dentition allowing it to eat large prey. The discovery clarifies the evolutionary tree of ichthyosaurs and tests new ideas on their evolution.
A study equipped seabirds with tracking technology to track their movements and feeding grounds. The research found that fishing vessels can help identify areas where seabirds go to feed, which is vital for protecting endangered species like the northern fulmar.
A team of researchers at the University of Rhode Island found that different types of phytoplankton respond differently to warming ocean temperatures. The study suggests that their growth rates and distribution patterns will be dissimilar, resulting in significant implications for future marine communities.
Researchers used seabird prey data to inform fisheries management and assess the impact of the COVID-19 pandemic on the marine ecosystem. The study revealed a surge in anchovy populations and changes in rockfish recruitment, informing ecologists and fisheries managers.
A new study reveals that marine species in the Mediterranean are migrating tens of meters deeper to survive warmer temperatures. The research found that cold-water species deepen significantly more than warm-water species, with an average depth increase of 55 meters across the region.
A global study reveals that industrial fishing has drastically altered the size spectrum theory in oceans, leading to a drastic loss of large fish and whales. Researchers estimate that losses caused by industrial fishing and whaling over the past century are greater than potential biomass losses due to climate change scenarios.
A recent study found that fish frequently rub against sharks to remove skin irritants and parasites. This behavior, previously unknown, could play a significant ecological role for aquatic animals. The research team documented over 47 instances of fish chafing against shark skin in 13 locations around the world.
A new analysis reveals that plankton-eating fish play a central role in driving local spikes of extreme biological productivity in tropical coral reefs. These 'sweet spots' concentrate abundant fish production, making them optimal for fishing. The study's findings hold significance for the future of tropical reef fisheries as coral ree...
A new study by Virginia Institute of Marine Science researchers maps the conditions most suitable for key species of forage fishes in the Chesapeake Bay, offering guidance for protecting or restoring their habitats. The analysis reveals that factors such as water depth and temperature affect the abundance of forage fish, with some spec...
The global coral reef crisis is characterized by widespread overfishing, pollution, disease, and climate change. The report highlights the need for swift action to address these issues and identifies management efforts such as reducing pollution and establishing marine protected areas.
A new study projects that marine heatwaves will wipe out hundreds of thousands of tonnes of fish available for catch in a country's waters by the century's end. Researchers warn that extreme temperatures will exacerbate impacts on fisheries and human communities, leading to significant job losses.
A new study by the University of Plymouth found that maritime ropes can release millions of microplastic fragments into the ocean annually. The research estimated that the UK fishing fleet alone could be releasing between 326 million to 17 billion microplastic pieces into the ocean every year.
A new study highlights the need to balance wildlife conservation with local community needs in Peru and Chile. Small-scale fisheries are struggling due to protected sea lion and seal populations, which compete for resources and damage fishing gear.
A new study found that bluefin tuna accumulation rates are highest in the Mediterranean and decrease in the north Pacific Ocean, Indian Ocean, and north Atlantic Ocean. The researchers linked methylmercury accumulation to regional seawater and zooplankton concentrations, revealing global patterns of mercury pollution.
Researchers found that areas protected under 'whole-site' Marine Protected Area (MPA) status have four-fold increases in fish abundance and diversity compared to unprotected areas. The study also showed significant benefits for commercially important fish species and conservation.
A study by University of Plymouth researchers found that seabed habitats and species recover more quickly following extreme storms than from the impacts of bottom-towed fishing. The research examined the impact of the 2013/14 winter storms on the Lyme Bay Marine Protected Area, off southern England's coast.
A new study found that global marine ecosystem models differ widely in their representation of key processes, leading to underestimation of climate change impacts. Marine ecosystem models generally agree on biomass decline but disagree on magnitude and location across the world's oceans through the 21st century.
A new study found that baby coral reef fishes have evolved to grow larger muscles and swim faster than their non-reef relatives, allowing them to outpace other fish in the ocean. This adaptation is thought to be related to their association with reefs, where they need to navigate open ocean currents to find a home.
Newly discovered fish fossils from an eastern Egyptian desert site show that marine fishes thrived in at least some tropical areas during the PETM. The study provides a snapshot of an ecosystem during an extreme warming event and may provide insights for the future.
A recent study by URI researchers shows that the Gulf Stream's position relative to the Grand Banks of Newfoundland can predict rapid warming of the Northwest Atlantic Shelf. The team used satellite data to observe the mechanism behind these changes, which block the southwestward transport of cold water and lead to marine heat waves.
Three of five sawfish species are critically endangered due to easily caught rostra in fishing nets and valuable fins in the shark fin trade. Conservation efforts focus on eight countries where protections can save the species; adequate protections exist in Australia and the US for some remaining populations.
A new study found that partially protected marine areas, which allow some fishing, had no more fish, invertebrates, or algae and did not attract users more highly than open areas. In contrast, fully protected areas had higher biodiversity and were valued more by coastal users.
The study explores how independent transitions of marine fish species into different water column habitats result in the recurrent evolution of similar body shapes. This suggests that limited sets of high-fitness solutions exist due to environmental constraints.
A new study reveals that floating DNA bits in seawater can reveal the relative abundance of fish species, allowing for an inexpensive and harmless way to monitor fisheries and track shifting marine life. The technique, known as eDNA, has vast applications in ocean conservation and research.
Analysis highlights diverse strategies used to sustain fishing livelihoods in modern era, prioritizing diversity and flexibility. Alternative approaches to management and licensing needed to maintain small-scale fishing operations worldwide.
This study uses sedimentary DNA to track the abundance of three major fish species over 300 years, providing a new tool for evaluating evolution and responses to climate changes. The results suggest that sedimentary DNA concentrations can reflect the abundance of aquatic species, enabling long-term monitoring efforts.
Mislabeling seafood products in the US results in 190,000-250,000 tons of environmentally damaged products being sold annually. Collaborative approaches are needed to reduce seafood mislabeling and its negative impacts on marine population health and fishery management.
A study by Rutgers University suggests that pre-war fisheries management could boost ocean protein contributions during a global food emergency, but widespread overfishing would not offset land-based food losses after a nuclear war. Effective regulation could lead to significantly higher catches in the first year post-war.
Research at the Panama Canal has recorded 11 new marine fish species, replacing freshwater fishes in Lake Gatun. The Suez Canal expansion also led to increased salt levels, allowing more non-native species to enter the Mediterranean.
Researchers used high-resolution models to predict where marine heatwaves will occur and intensify, revealing stark regional variability. The study found intense heatwaves more likely off Tasmania's coast and along the US Gulf Stream's shoreline.
Researchers have successfully replaced fishmeal and fish oil in farm-raised Kampachi diets with algae oil, a cost-effective alternative that maintains growth rates and fillet yield. The study's findings have significant implications for ocean sustainability and the growing demand for seafood worldwide.
A new study reveals that marine angelfish exhibit the highest incidence of hybridization among coral reef fish, with nearly half of all known species creating hybrids. The research found that angelfish can hybridize even between distantly related species and across vast genetic distances.