Articles tagged with Marine Biology
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.
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.
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 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.
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 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.
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 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 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.
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 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.
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 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.
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.
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.
Research reveals changes in Hawaiian coral reef soundscapes tied to lunar cycles, indicating potential impacts on marine life. The study explores moonlight-driven biological choruses and their effects on reef ecosystems.
Researchers used ChatGPT to design a university field course, finding it an effective tool for planning educational trips. The AI model was also adaptable for other industries, such as environmental impact studies and business trips.
Researchers at the University of British Columbia have discovered a new population of killer whales in the Northeastern Pacific, with distinct physical characteristics and a diet that includes marine mammals and sea turtles. The orcas were identified through shark-bitten scars and observations by fishermen and birding enthusiasts.
Research reveals that rapid-range shift in fish populations is often a sign of impending decline. The study analyzed data from over 2,500 species and found that those shifting at high velocities show marked declines, while core range populations remain relatively stable.
A new study identifies ten key components to promote sustainable, equitable, and climate-smart ocean planning initiatives worldwide. The proposed components include foundational principles and operational pathways that aim to support marine managers and planners in developing climate-smart ocean plans.
Researchers at OIST found that anemonefish can identify specific lineages of giant sea anemones, revealing two cryptic species within the bubble-tip sea anemone. The study provides new insights into marine biodiversity and highlights the remarkable abilities of these fish in distinguishing between different sea anemone groups.
Scientists have discovered a new species of deep-sea worm, Pectinereis strickrotti, living near a methane seep off the Pacific coast of Costa Rica. The worm has an elongated body with feathery appendages and was named after Woods Hole Oceanographic Institution's Bruce Strickrott.
Hilary Palevsky's research focuses on marine biogeochemistry, and her NSF CAREER Award will support the creation of educational videos to guide students using remote ocean monitoring data. She aims to clarify the mechanisms behind the ocean's biological pump, which plays a crucial role in removing anthropogenic carbon from active cycling.
A team of scientists discovered that some mollusks sport the most recently evolved eyes with a lens, which arose in four separate events. The researchers found that chitons' sensory organs are embedded directly into their segmented shell, and that species with fewer slits evolve larger, more complex eyes.
Researchers observed an individual orca, nicknamed Starboard, killing a 2.5-meter juvenile great white shark within two minutes. The study challenges conventional cooperative hunting behaviors among killer whales, providing new insights into their predatory dynamics and potential impact on marine ecosystems.
Sea cucumbers, known as the 'janitors' of the ocean, have been found to be a missing component in maintaining healthy coral reefs. Their removal due to overfishing has led to an increase in coral disease and a decline in biodiversity.
Researchers used movement behavior models to track leatherback sea turtles to previously unknown foraging locations along the US east coast. The study found that leatherbacks use specific areas in the South Atlantic Bight, Mid-Atlantic Bight, and southern New England as both migratory corridors and foraging grounds.
Scientists have identified ocean viruses that can help trap carbon dioxide in seawater, using similar techniques to prevent methane's escape from thawing Arctic soil. The study reveals which viruses target the most important reactions in microbial community metabolisms.
Research reveals that bleaching reefs release organic compounds that promote bacterial growth, leading to an increase in opportunistic bacteria and potential pathogens. This shift in microbial communities may harm corals through suffocation or disease.
Researchers successfully cultured and analyzed two strains of Meteora sporadica, a small, unicellular eukaryote with a complex cytoskeleton featuring lateral arms supported by microtubules. The study reveals that Meteora sporadica is closely related to Hemimastigophora, a group of deep-branching eukaryotes with no arms or MTOCs.
A new study reveals tiny plankton (0.02mm) make up majority of ocean plankton, playing critical role in ecosystem health and oxygen production. The research emphasizes the need to take these tiny organisms seriously and incorporate them into global ocean policy.
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.
Researchers observed that clown anemonefish colonies display the most aggressive behavior towards fish with three bars like themselves. The fish also recognize different anemonefish species based on the number of vertical white bars, leading to strict social hierarchies and upholding dominance.
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.
Sponges exhibit coordinated movements despite lacking muscles or neurons, attributed to relaxation of stress fibres triggered by an evolutionarily ancient inflammation-like mechanism. This process also regulates human blood vessel contraction, influencing blood pressure.
Researchers have uncovered evidence of complex microbial communities existing in ecosystems over 3 billion years ago, with a diverse carbon cycle involving various microorganisms. The study provides a rare glimpse into the Earth's early ecosystems and advances our understanding of ancient microbial ecosystems.