Articles tagged with Marine Biology
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.
A study by University of Maine researchers found that American lobster populations are relocating to new habitats, while their numbers are dwindling in abundance. The lobsters are now favoring open spaces over rocky shelters, with a significant increase in those living without shelter at all.
Researchers at ETH Zurich have discovered a new predatory bacterium, Aureispira, that uses grappling hooks and cannons to capture prey. The bacterium's molecular structures resemble those of pirate tools, allowing it to entangle and kill its victims quickly.
Researchers detected microplastic particles in the breath of wild bottlenose dolphins, suggesting inhalation may be a key route of exposure. The study supports the idea that dolphins could be exposed to potentially harmful microplastics through this pathway.
Researchers have discovered a protein shell in diatoms that enables efficient CO2 fixation, with implications for bioengineering approaches to combat climate change. The discovery reveals how diatoms convert CO2 into nutrients through photosynthesis, with potential applications for improving carbon capture from the atmosphere.
In a 30-year experiment, scientists witnessed rapid evolution of marine snails in response to pollution and climate change. The snails' adaptation was driven by genetic diversity and gene flow from neighboring populations, allowing them to rapidly adapt to their new environment.
Researchers used aerial drone technology and boat-based surveys to map complex tidal flows around the world's most powerful tidal turbine, O2. The study provides new insights into optimal turbine placement and site-specific assessments to address uncertainties surrounding interactions with marine habitats and environments.
Researchers found that dead coral skeletons left after bleaching events protect seaweed from herbivores, enabling its quick colonization and outgrowth over young coral. This complex landscape prevents new corals from settling and surviving on the reef.
Researchers at UC Santa Barbara used drones to count white sharks near Carpinteria Beach, finding that ocean temperature, season, and time of day correlate with shark density. The study provides insights into shark behavior and may help inform conservation efforts and beachgoer safety.
High-contrast patterns on humbug damselfish bodies serve dual purpose: camouflage when stationary and motion dazzle when moving. The fish adapt their behavior based on environment, using motion dazzle to confuse predators when feeding outside coral colonies.
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.
A new study found that one in five seafood products was mislabeled, with endangered species such as European eel being sold as freshwater eel. The study highlights the need for clearer labeling standards to protect vulnerable marine populations.
Researchers have discovered microplastics in all three parts of coral anatomy, including surface mucus, tissue, and skeleton. This finding may explain the 'missing plastic problem' and suggests that corals could be sequestering plastic waste from the ocean.
A new report by international experts urges a collective approach to tackle plastic pollution, citing over 7,000 research studies on microplastics. The need for global reduction in plastic production and emission of microplastic particles is emphasized to avoid irreversible environmental damage.
Underwater noise pollution from human activities significantly impacts the ability of orcas to hunt successfully in the Salish Sea. The study found that increased ambient noise levels, particularly around vessel propellers, interfere with echolocation behavior and hunting efforts. This hindrance affects females more than males, potenti...
Researchers have captured sub-adult male northern elephant seals returning to a deep-sea cabled observatory off Canada's British Columbia coast. The footage provides new insight into their fish foraging behavior at depth.
A team of researchers discovered that a 'tag-team' between the oceans and continents led to severe environmental crises, causing mass extinctions of marine species. The study found that chemical weathering pulses disrupted the oceans, leading to anoxic events that had profound impacts on marine ecosystems.
A study by Florida Atlantic University and the University of Tübingen found that rainfall cools beach surfaces and enhances moisture for egg development, making it a crucial factor in determining hatchling body size. The research suggests that global warming may shorten incubation periods and disrupt growth, affecting sea turtle survival.
Researchers at Boston University discovered that deep-sea rocks, called polymetallic nodules, produce oxygen through a process known as seawater electrolysis. This phenomenon creates 'dark oxygen' without sunlight, contradicting the long-held assumption that oxygen is only produced by plants and organisms with photosynthetic capabilities.
Researchers found that stock assessments have often been overly optimistic, with a third of sustainably fished stocks classified as overfished. They call for simpler models and greater use of the precautionary principle to protect fish stocks.
Researchers found a choanoflagellate harboring its own microbiome, forming colonies that enclose bacteria and exhibiting a unique symbiotic relationship. This discovery sheds light on the origin of interactions between animals and bacteria in ancient oceans.
A deadly marine cone snail's venom contains a toxin that interacts with human cells in a specific manner, regulating blood sugar levels and hormone balance. This discovery may lead to the design of more effective drugs for treating diabetes and endocrine disorders.
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 UC San Diego's Scripps Institution of Oceanography have discovered the largest protein yet identified, PKZILLA-1, which builds toxic algal toxins. The finding could enhance monitoring efforts for prymnesin-producing golden algae blooms and unlock potential for new medicines.
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.
A new study found that microplastics impact plant reproduction, while seawater flooding causes greater tissue death in coastal plants. Combining both stressors amplifies threats to ecosystem wellbeing.
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.
PSU will lead a three-year project to develop cost-effective filters for washing machines, dishwashers, and clothes dryers to remove microplastics. The project aims to reduce microplastic pollution in coastal communities through education and intervention strategies involving tourism industry partners.
Researchers have confirmed the presence of two critically endangered shark species, broadnose sevengill and soupfin, in Puget Sound, highlighting changes in the Salish Sea's ecosystem. The discovery indicates potential changes in food webs and the need for continued monitoring.
A species of freshwater flatworm has been found to produce sterile soldiers that defend its colonies without reproduction. The discovery is significant as it sheds light on the evolution of complex animal societies.
A study by University of Alaska Fairbanks researchers found that hatchery-raised fish are interbreeding with wild populations, reducing diversity and increasing resilience. This can have long-term consequences for wild population recruitment and adaptation to future changes.
Research predicts significant shifts in marine fish communities in the North Atlantic and Arctic Oceans as a result of climate warming. The study projects a decline in the most abundant species and an increase in species richness but with fewer fish overall.
A new study reveals the crucial roles of fish and invertebrates in coral reef health, including nutrient boosting and predator protection. However, parasitic snails and destructive crab species also pose a threat to these vital ecosystems.
A new study using museum collections reveals that ammonites were diverse and thriving across the globe just before their extinction in the Late Cretaceous. The research found that the balance of speciation and extinction rates varied by region, contradicting previous theories.
A study on fish communities in Daya Bay reveals a decline in diversity, shifts in composition, and shrinking of fish body size over the past 30 years. The research highlights the impact of environmental pollution, overfishing, and habitat fragmentation on the ecosystem.
A study by Osaka Metropolitan University reveals that fish use physical punishment to promote helping behavior in their offspring, demonstrating advanced social and cognitive abilities. The research highlights the presence of punishment in animal societies, bridging a gap in understanding cooperative behavior and its mechanisms.
A 246 million-year-old nothosaur vertebra was discovered on New Zealand's South Island, shedding new light on early sea reptiles from the Southern Hemisphere. The find reveals that these marine reptiles originated near the equator and rapidly spread to other regions, challenging long-standing hypotheses about their migration patterns.
A new study found that magnesium levels in sandhoppers increase during cold weather, slowing their activity. In deeper sleep, magnesium levels can more than double, putting the sandhopper into a torpid state and allowing it to conserve energy.
A new study found giant Atlantic bluefin tuna are spending more time in higher latitudes as the region experiences ocean warming events. The fish are normally seasonal visitors to Ireland, but climate change may alter their migration routes.
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.
A fungus living in the sea can break down polyethylene plastic when exposed to UV radiation from sunlight. The fungus Parengyodontium album can degrade particles of polyethylene, a common type of plastic found in ocean pollution.
A study by MIT scientists found that microscopic defects in the ice shape how massive glaciers flow, leading to revised predictions of future sea-level rise. The researchers developed a model to estimate an icy region's sensitivity to stress, directly relating it to its likelihood of flowing.
A new study uses satellite imagery in conjunction with phenological and behavioral models to accurately predict the number of breeding pairs and fledging chicks. The estimated counts were compared to a dataset collected over a 10-year period at a colony, highlighting the importance of long-term, systematic time series for understanding...
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 found that microbial communities can stimulate decomposition of both fresh and old organic matter, with significant implications for the marine carbon cycle. The study suggests that increased input of fresh organic matter due to climate change could lead to a disproportionate effect on degradation of refractory organic matter.
A study found that tool use among sea otters allows access to larger prey, reducing tooth damage. Female otters, which are more likely to use tools, can consume prey up to 35% harder than males.
Researchers have identified heavily used shipping lanes that pass through crucial whale shark feeding grounds, posing a threat to this endangered species. Targeted measures, such as reducing ship speed, could help minimize the impact on the shipping industry while protecting whale sharks.
Researchers discovered that two species of marine bacteria work together to produce vitamin B12, essential for metabolism and survival of many marine organisms. The bacteria release building blocks into the water, which are then combined to form the vitamin through a complex process involving viral infection.
New research demonstrates that incorporating widgeongrass into seagrass restoration efforts can increase the portfolio of species diversity and enhance long-term success. The study found that seeding widgeongrass in the fall with minimal pre-treatment resulted in highest survival and growth rates.
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.
Disposable vape sales quadrupled in the UK between 2022 and 2023, contributing to e-waste accumulation. The technology contains valuable resources like lithium, but recycling is often difficult due to lack of clear instructions. Experts call for urgent reform of disposable electronics practices to protect the environment.
Researchers led by Professor Jin Wu at HKU have developed a method to map plant functional traits from space using time-series satellite data. The approach combines vegetation spectroscopy and phenology, providing insights into ecosystem functioning and biodiversity.
A group of 350 scientists from over 60 countries call for a legally binding global treaty to prohibit the production of hazardous plastics chemicals and adopt science-based approaches. They advocate for an independent scientific body with robust conflict of interest policy and regional representation.
A newly described species of ichthyosaur, named Ichthyotitan severnensis, is believed to be the largest known marine reptile, with estimates suggesting it could have reached up to 82 feet in length. The discovery was made from fossilized jawbone fragments found in Somerset, UK.
Researchers analyzed modern and historic mussel shells to investigate the impact of climate change on ecologically and commercially important mollusks. They found that shells collected today are significantly more porous than those collected in the past, suggesting increases in temperature led to increased porosity.
A new study reveals that retention ponds and wetlands can significantly reduce the amount of tyre particles entering aquatic environments, with an average reduction of 75%. The research found that tyre wear particles outweigh other forms of microplastics, but are also removed in greater quantities.
The study found that warming sea temperatures have led to an increase in warm-affinity macroalgae species, while cold-affinity ones are declining. This change affects ecosystem structure and biodiversity.
The Global Ocean Artificial Light at Night Network aims to expand on previous research, providing a central resource for marine light pollution expertise. Light pollution poses significant ecological harm, including disruptions to daily rhythms and reproductive cycles of marine species.
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.