Articles tagged with Shellfish
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A new FAU study uncovers the impact of acidic water on shell-building marine organisms, highlighting the need for strategies to mitigate coastal acidification. The research found that nutrient pollution, freshwater input, and other environmental factors contribute to reduced aragonite saturation.
Research reveals that exposure to addictive drugs like fentanyl and ketamine affects the behavior and survival rates of oyster larvae. The study found that after two weeks of exposure, survival declined in all treatments and doses, with benzoylecgonine causing the greatest reduction.
A research team led by Göttingen University found that urban blue spaces play a critical role in food security and social inclusion in four major Indian cities. Women, the elderly, and marginalized communities most frequently collected, shared, cooked, and sold food products.
A new species of sea anemone has been discovered building shell-like homes for hermit crabs. The anemone secretes a carcinoecium that expands and reinforces the crab's shell, forming a mutualistic relationship between the two species.
Researchers discovered a common parasite of modern oysters has been infecting bivalves for hundreds of millions of years. The parasite, belonging to the spionid group, has remained largely unchanged despite multiple mass extinction events.
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.
A team of international marine scientists urges reform to licensing and regulation of coastal restoration projects. The authors argue outdated systems hinder progress toward ambitious global targets to restore 30% of degraded ecosystems by 2030.
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.
Scientists have identified a previously unknown virus in Pacific oysters linked to annual mass die-offs, highlighting the importance of disease prevention measures. The discovery also underscores the need for further research into the causes of mortality in oyster populations.
A team of Korean researchers has successfully recreated a golden fiber akin to that of 2,000 years ago using the pen shell cultivated in Korean coastal waters. The breakthrough reveals the scientific basis behind its unchanging golden color and demonstrates the potential of eco-friendly materials.
Researchers at Washington State University discovered that juvenile European green crabs can cause significant damage to shellfish, native eelgrass, and the ecosystem. The study found that even young crabs can crack into immature shellfish with ease, challenging current removal techniques.
The 2025 BioOne Ambassador Award recognizes exceptional early-career researchers who are advancing public understanding of science through effective communication. The award highlights their outstanding research and commitment to sharing their work with a broader audience.
A team of biologists has discovered an ancient neurohormone called bombesin that controls appetite in humans and other vertebrates. The study also found that bombesin-like neurohormones are present in starfish, revealing a common ancestor of appetite regulation dating back over half a billion years.
Researchers from the University of Gothenburg have discovered that Pacific oysters can reproduce in less salty waters, potentially allowing them to colonize the western Baltic Sea. The study found that genetic diversity and breeding habitat play a crucial role in the oysters' ability to adapt.
Anemonefish provide food to bubble-tip anemones through active provisioning, which increases the host's growth rate. This symbiotic behavior is crucial for the anemonefish as it benefits them by making their hosts larger.
A study led by Alexandria Marquardt suggests that Virginia's oyster restoration practices are effective in increasing fishery sustainability and supporting local economies. The research shows that shell replenishment activities, combined with rotational harvests, result in improved reef structure and increased commercial harvests.
A study found that ocean acidification can shift the sex ratio of oysters towards females, a mechanism known as environmental sex determination. This phenomenon was observed across multiple generations in both hatcheries and natural habitats, highlighting the potential impact of climate change on marine ecosystems.
Researchers discovered that heart cockle shells have translucent areas with hair-thin strands that deliver specific wavelengths of light into the bivalves' tissues. This natural system filters out bad wavelengths and channels in optimal wavelengths for photosynthesis, benefiting the clams' symbiotic algae.
Piangua populations are experiencing a significant loss of genetic diversity due to intense harvesting, reducing their ability to adapt to environmental challenges. The study reveals subtle genetic variations among local populations, highlighting the need for targeted conservation strategies.
The study found a recent reversal of fortunes in the Adriatic Sea, with populations of marine predators and their prey plummeting and being replaced by a single species. The researchers used seafloor environments to determine interactions between species, showing a decline in biodiversity and excess nutrients.
Researchers at Osaka Metropolitan University have developed polyethylene rafts that are about five times more durable than traditional bamboo rafts used in oyster farming. The new rafts are designed to be affordable and can withstand harsh weather conditions, reducing damage from typhoons.
A new study reveals a previously unknown galeommatoidean bivalve species, Brachiomya ducentiunus, found attached to sea urchins in False Bay's kelp forest. The discovery expands our understanding of marine biodiversity and ecological interactions.
A massive harmful algal bloom was detected in the Bering Strait region of western Alaska in 2022, posing an unprecedented risk to human and ecosystem health. The bloom, caused by the single-celled organism Alexandrium catenella, was tracked using new technology and communicated to remote coastal communities in real-time.
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.
Scientists from the University of East Anglia and other institutions review the climatic effectiveness of four 'nature-based' techniques using marine biological processes. They conclude that these activities cannot provide a significant contribution to carbon dioxide removal, posing risks to meaningful climate mitigation.
Pacific Oysters experienced a significant increase in density, reaching up to 32-fold, concurrent with summer seawater temperature rises of 2-4°C. This trend coincides with warmer ocean conditions in California waters.
Researchers successfully restored a Flat oyster reef along the Adelaide coastline, achieving ecological recovery within two and a half years. The restored reef showed remarkable biodiversity and functional improvements, providing hope for the future of marine ecosystems.
A group of coastal Alaska Native tribes have successfully taken the lead on shellfish toxin testing, filling a critical gap in public health protection. However, securing stable funding and improving outreach has been limited, threatening the effectiveness of the program.
The first Neolithic farmers and shepherds in Andalusia settled permanently on the island of San Fernando, Cadiz, 6,200 years ago. They collected and consumed shellfish throughout the year, with a greater exploitation during the colder months of autumn, winter, and early spring.
Local sea snails, such as the frilled dog winkle, are vulnerable to warming oceans due to their inability to adapt or migrate. In contrast, species like oysters and northern anchovies, which are tolerant of heat, may survive in warmer waters.
Researchers have developed a fully-enclosed aquaculture system that can be completely controlled, eliminating water quality and food safety concerns. The system produces nutrient-rich protein-rich 'Naked Clams' that are faster-growing than mussels and oysters, with higher Vitamin B12 levels.
A new study reveals a network of genes that evolve differently in long-lived and short-lived bivalves, associated with longevity in other animals. This shared molecular framework suggests a common genetic basis for extended longevity across diverse animal lineages.
A study found that invertebrate abundance and diversity decreased near human activities like shellfish harvesting and heavy metal pollution. In contrast, environmental factors like water temperature and salinity impacted invertebrates further away from human settlements.
Researchers have sequenced the genomes of transmissible shellfish cancers, revealing high levels of genomic instability not seen in other cancers. The study focused on the common cockle, a species that belongs to one of the oldest groups of animals on Earth.
Researchers have discovered widespread genomic mutations and instability in transmissible cancers found in clams, which may explain their survival for over 200 years. The study highlights the clam's potential as a model for studying cancer evolution and developing novel strategies to block cancer in humans.
A new study identifies over 800 bivalve species that humans harvest and find to be more resilient to extinction due to their adaptability in various climates. The researchers highlight the need for sustainable management to preserve these populations, but also warn of potential risks if human demand exceeds their capacity.
Researchers found shared sewing trends of Nautilus shell beads across three Indonesian islands dating back at least 12,000 years. The beads indicate a shared culture and practice of collecting Nautilus shells for aesthetic purposes.
The study found Asian clams in various habitats along the lower Columbia River, with high concentrations near warmer waters and sandy substrates. The invasive species can disrupt food webs and cause economic damage, raising concerns about potential future invasions by quagga and zebra mussels.
Researchers studied bivalve evolution during the Cambrian Explosion and found they branched out slowly compared to other groups. The study suggests that the slow start may have been due to the absence of a key adaptation, such as an enlarged gill, which allowed them to filter out plankton from water.
A longitudinal study using acoustic telemetry monitored rays in clam leases, finding that rays spent more time near sites than reported, but not necessarily preferring them. The study highlights the need to understand if clam leases are part of rays' natural foraging habitats and if they interact with the clams.
A team of scientists, including a University of Central Florida researcher, is developing oyster-based shoreline protection for U.S. coastlines. The project aims to create self-repairing reef-mimicking structures to mitigate coastal flooding and erosion.
Researchers found that current anti-predator gear can reduce clam mortality by four- to tenfold, with double-layered treatments showing the highest survival rates. However, rays were still capable of interacting with the gear for prolonged periods, potentially diverting them from other natural habitats.
Researchers at Curtin University found a catastrophic decline in biodiversity at the west end of Rottnest Island, with some species experiencing declines of up to 90% between 2007 and 2021. The study highlights the impact of global climate change on marine ecosystems even in protected areas.
Researchers discovered that a group of wood-boring clams has evolved to build chimneys made of poop to get pure water in and expel waste, dominating their habitat. These clams have adapted to low oxygen conditions with unique traits like mucosal linings and hemoglobin-rich blood.
Researchers from OIST have sequenced the genome of pearl oysters, finding key differences between chromosome pairs that could impact immunity and pearl production. The study aims to identify resilient strains for aquaculture, addressing declining pearl production in Japan.
A University of Kansas paleontologist is using a 3-million-year-old fossil record to predict the future of Western Atlantic mollusk species. By analyzing the fossil record, the researcher hopes to identify biological and behavioral traits that gave some species evolutionary success and others extinction.
Scientists used centuries-old clam shells to study the North Atlantic's evolution and response to external changes. The findings indicate that the system destabilized and lost resilience prior to the Little Ice Age, potentially causing it to 'tip' into a new, colder state.
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 found that the 2021 heat wave caused widespread death among shellfish due to a combination of low tides, high air temperatures, and location. The research team analyzed hundreds of field observations and found that some species fared better than others in terms of survival.
A new standardized method for measuring calcium carbonate on ocean floors can help researchers compare coral reef health globally. The 'how-to' guide enables the collection of comparable data from coral and oyster reefs worldwide, providing insights into the impacts of climate change and human activities.
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.
Shellfish farmers in California are adapting to ocean acidification by diversifying their operations and relying on scientific resources to pinpoint environmental factors contributing to large die-off events. Growers also emphasize the need for policy changes, such as adjusting regulatory requirements and permitting processes.
A massive volcanic eruption at the end of the Triassic period caused a global cooling effect, leading to the mass extinction. The event paved the way for the rise of dinosaurs as their natural predators went extinct.
Researchers analyzed mollusk shells at 4,000-year-old shell ring villages in Georgia and found environmental changes drove the formation and abandonment of these coastal communities. Smaller oyster shells and lower salinity conditions suggested depletion in oyster stocks and unsustainable fishing practices.
Researchers confirm contagious blood cancer can jump between marine clam species, with evidence suggesting human activities may contribute to the spread. The discovery highlights the potential ecological threat posed by these diseases and emphasizes the need for further studies to monitor pathogens.
A new study by the University of Exeter reveals two previously unknown Vibrio species in UK waters, which can cause gastroenteritis and skin infections in humans. The increasing range of these bacteria also threatens marine biodiversity and the seafood industry, with potential economic costs estimated at £6 billion annually.
Researchers used clam fossils to create a comprehensive evolutionary tree over hundreds of millions of years, revealing that a basic assumption can significantly distort the picture of which species are destroyed during mass extinctions. The study found that assuming lineages always split into two new species can push the origins of ne...
A study by the California Academy of Sciences and colleagues found significant tissue abnormalities in oysters from the Gulf Coast, even years after the devastating oil spill. The researchers discovered higher rates of metaplasia in Eastern oysters, which can cause debilitating health issues.
A new study reveals that some bacterial symbionts of bivalves have traveled the globe and established partnerships with host species across diverse habitats. This finding challenges previous concepts of symbiont acquisition and highlights the remarkable flexibility in this partnership, which benefits both hosts and symbionts.
A study recommends expanding conservation aquaculture in ten priority estuaries on the West Coast to restore declining Olympia oyster populations, benefiting both local shellfish growers and Tribal communities. Aquaculture can support wild populations without harvesting or selling native oysters.