Articles tagged with Crustaceans
A study by Kyoto University found that Daphnia's phenotypic plasticity is strongly related to its body size and the type of predator. Medium-sized Daphnia are more vulnerable to predation by both Chaoborus larvae and fish, which prefer larger prey.
A study published in Science Advances discovered that talitrids, a group of small crustaceans, independently colonized mountain habitats four times during the Oligocene and Miocene periods. Genetic adaptations allowed them to survive in colder environments and establish themselves in diverse habitats worldwide.
Researchers at Brown University have developed a krill-inspired robot called Pleobot, which emulates the swimming method of krill to navigate complex marine environments. The platform has the potential to enable scientists to understand how to engineer better robots for ocean navigation and exploration.
Researchers have identified over 30 previously unknown RNA viruses in sea lice, suggesting they may play a role in controlling sea-lice populations. The viruses' ability to rapidly replicate and weaken their hosts maintains balance in nature.
A new UK project, GEMALOR, monitors hatchery-reared lobsters to ensure wild populations remain genetically diverse. Researchers will assess genetic diversity in both captive and wild environments to improve broodstock management.
Scientists have developed a method to create less-allergenic shrimp by altering protein structures, reducing inflammation, and preventing antibody binding. The technique, known as reverse-pressure sterilization, was tested on mice with shrimp allergies and showed promising results.
Ben-Gurion University researchers have discovered a new principle in optics using the Pacific Cleaner Shrimp, leading to the creation of an ultra-thin and highly efficient whitening material. The study found that the shrimp's unique arrangement of molecules creates birefringent nanospheres with brilliant whiteness.
Researchers from the University of Gothenburg found that replanted eelgrass meadows can restore biodiversity rapidly, with up to 80% of invertebrates returning after just three months. The study's findings suggest smaller plot sizes can be used, saving money on restoration efforts while maintaining ecosystem health.
Researchers at UMass Chan Medical School identified the Bmal1 gene as a crucial regulator of circatidal behavior in P. hawaiensis, establishing a molecular link between circadian and circatidal clocks. The study provides new insights into the genetics underlying circatidal rhythms.
A new study found that ocean acidification is causing Dungeness crabs to physically sniff less and have decreased ability to detect food odours. This loss of smell may be partially explaining the thinning of crab populations, as reduced food detection could impact energy availability for reproduction.
Researchers propose that an enzyme called multicopper oxidase-2 (MCO2) gives insects a disadvantage in the sea while conferring advantages on land. This hardening mechanism is also linked to their ability to climb and fly, making it a defining feature of insects.
A community science survey reveals an abundance of floating sea creatures in the North Pacific Garbage Patch, including jellyfish, snails, and crustaceans. The study found a positive correlation between plastic waste and three groups of sea creatures, highlighting the complex relationships within this ecosystem.
Researchers have developed a novel imaging method to detect gold nanoparticles in woodlice, allowing for the study of metal toxicity and its impact on the environment. This technique enables scientists to precisely pinpoint the fate of individual gold nanoparticles in complex biological systems.
A new study reveals a surprising exception to the rule of uniformity across the Indo-West Pacific coral reef ecosystem. Chlorodielline crabs with overlapping ranges have uniquely shaped gonopods, but otherwise appear identical, suggesting genetic divergence in different geographic areas.
A research team created bioplastic diffraction gratings from chitosan extracted from crab shells, enabling the production of portable and disposable spectrometers. The biodegradable gratings could improve sustainability in optical manufacturing and reduce seafood waste.
Human activities are causing rapid changes to the ocean soundscape, harming invertebrates through cellular and ecosystem-level impacts. The study highlights the sensitivity of various invertebrates to underwater sound and emphasizes the need for urgent research and mitigation strategies.
Researchers have used crab shells to create anode materials for sodium-ion batteries, which could lead to more sustainable battery technologies. The team found that the porous structure of the crab carbon provided a large surface area, enhancing its conductivity and ability to transport ions efficiently.
Researchers discovered that young snapping shrimp's upper claws can accelerate at speeds of up to 580,000m/s², surpassing their parents' abilities and producing powerful cavitation bubbles. The study, published in Journal of Experimental Biology, highlights the impressive mechanical capabilities of these tiny crustaceans.
A new study suggests that the invasive rusty crayfish may be dying off naturally, allowing native water plants and snails to flourish. In some Northern Wisconsin lakes, crayfish populations have declined by nearly zero, leading to a resurgence of plant life and potential ecosystem recovery.
A 250.8 million-year-old fossil find reveals complex marine ecosystems on Earth just one million years after the Permian-Triassic mass extinction, contradicting long-held theories. The discovery provides insights into life's rapid recovery from extreme crises and necessitates a re-evaluation of early Triassic ocean conditions.
A study published in Frontiers in Environmental Archaeology reveals that Neanderthals regularly harvested large brown crabs from the nearby rocky coast, targeting adult animals and cooking them on coals. The findings add evidence to the notion that marine foods played a significant role in Neanderthal diets.
Researchers found that larvae of the Atlantic mangrove fiddler crab survived less in warmer water and underwent physiological changes due to higher acidity. Marine heatwaves will be harmful to species and those that feed on them, with potential economic losses to fisheries. Further research is needed to understand the effects.
Deep-sea squat lobsters are reclassified after Harvard researchers discovered five new species, showing wider geographic distribution ranges and shallower genetic diversity. The discovery highlights the importance of molecular data in understanding evolutionary history.
Researchers from SPUN mapped the diversity of mycorrhizal fungi across Palmyra Atoll, finding unique nutrient feedback loops that support rainforests, plankton communities, and coral reefs. The study highlights the importance of these underground networks in maintaining ecosystem resilience to climate change.
A new study found that offshore mussel farms can increase species abundance, including Atlantic horse mackerel and European lobster, on degraded seabed habitats. The research suggests that this practice could have wider environmental benefits, supporting the national and international Blue Growth agenda.
A new study evaluated the performance of a Seabin device in Plymouth, UK, finding it captured only 0.18kg of litter over 750 hours of operation. In contrast, manual trawls collected significantly more litter with minimal harm to marine life.
Researchers at the University of Exeter are developing a genetic tool to analyze lobster population genetics and connectivity, trialing aquaculture technology for sustainably farming lobsters in The Bahamas, and devising a policy for future sustainable exploitation.
The Great Salt Lake is losing freshwater input to agriculture and urban growth, causing salt concentrations to spike. Like Iran's Lake Urmia, it's reaching levels stressful for brine shrimp and brine flies, which are essential for migratory birds.
Researchers have identified a complex of proteins in a tiny marine invertebrate that share similarities with the human immune system, suggesting an earlier origin for the building blocks of our immune system. The study could ultimately guide the development of new immunotherapies and improve understanding of transplant rejection.
Scientists create zinc battery with chitosan-based biodegradable electrolyte, reducing environmental burden. The new battery stores power from large-scale wind and solar sources, uses abundant zinc, and can be broken down by microbes, making it a viable option for sustainable energy storage.
Research by the Alfred Wegener Institute found that low-frequency noise from human activities stresses crustaceans, mussels, and worms on the seafloor, impacting their ability to transform sediment and maintain ecosystem function. This could have far-reaching consequences for nutrient cycling and food availability in marine ecosystems.
A new study by researchers at University of California - Riverside found that the position of continents can have a devastating effect on deep ocean creatures. Continental movement can cause a sudden collapse in global water circulation, leading to a stark separation between oxygen levels in the upper and lower depths.
Researchers observed blue crabs digging shallow pits that fill with water and waiting for prey to come to them. The attacks were successful 33% of the time, making it an efficient hunting strategy.
Researchers found that bioturbation by fiddler crabs increases soil pH and reduces salinity, creating a more hospitable environment for beneficial bacteria. These bacteria produce essential chemicals for iron trapping, improving mangrove plant growth.
A new species of Bathynomus, a type of deep-sea isopod, has been discovered in the Gulf of Mexico. The new species, B. yucatanensis, is around 26cm long and has unique features such as slender body proportions and longer antennae.
Researchers from GIST have developed an amphibious artificial vision system with a panoramic field-of-view based on the Fiddler crab's eye structure. The system overcomes limitations of current artificial visions, enabling imaging in both aquatic and terrestrial environments.
Researchers propose that arthropod shells evolved from a common ancestral structure, contrary to the prevailing gene co-option theory. This discovery suggests that many 'novel' structures in arthropods are actually homologous and share a single origin dating back to the Cambrian period.
A team of scientists has discovered that idoteas, tiny marine creatures, play a crucial role in the reproductive cycle of red algae by pollinating them. This unique interaction not only aids the alga's reproduction but also provides the idotea with food and shelter.
Researchers found that a species of red seaweed uses an isopod crustacean to transfer its male gametes for fertilization, presenting a new class of animal-mediated male gamete movement. This discovery expands the concept of 'pollination' beyond seed plants.
A Tel Aviv University study reveals that corals' fluorescence serves as a lure for plankton, which are then consumed by predators like corals. The researchers found that green-fluorescent corals were 25% more preyed upon than yellow-fluorescent ones.
A new study reveals that bottom burrowing animals were among the first to recover after the end-Permian mass extinction. The research, led by Dr. Xueqian Feng, used ancient sea bed burrows and trails to reconstruct the recovery stages of various animal groups.
A new species of sea anemone has been discovered off the coast of Japan, forming a symbiotic relationship with the hermit crab. The anemone attaches itself to the crab's shell using a hard shell-like secretion, while the crab taps and pinches the anemone to move it to its new shell.
Research at King Abdullah University of Science and Technology finds that 98% of ocean plastic is buried in the seafloor, with coastal habitats like mangroves also significant sink sites. The discovery resolves a mystery and has significant implications for human health and UN Sustainable Goal 14.
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.
Researchers discovered fossilized trilobite appendages exhibiting characteristics similar to those found in male horseshoe crabs. These findings suggest a unique mating strategy, where males use the appendages to grasp females during reproduction, providing insight into the reproductive behavior of ancient complex animals.
The Florida horse conch population is shrinking due to unregulated commercial harvesting and recreational live collection. With an average lifespan of 8-10 years, the species can only reproduce at age six, resulting in limited offspring production.
A York University expert argues that invertebrates can feel pain, have emotions, and deserve moral consideration. Research suggests that decapod crustaceans and cephalopod molluscs are sentient, challenging traditional views on animal welfare.
An international research team analyzed the microbial community living on the carapaces of deep-sea squat lobsters, finding a diverse microbiome that likely provides benefits to both organisms. The microbes utilize energy-rich chemical compounds, while the squat lobsters may use them as a source of nutrients or have them remove toxic s...
A new study published in Ecological Applications shows that eDNA-based detection can be a useful tool for early detection of invasive green crab. The technique involves collecting water samples and analyzing DNA to detect the presence of the species, which can help wildlife managers contain future invasions and prevent new outbreaks.
A new study reveals that animals use cheap tissues like chitin to build their weapons, allowing them to deceive opponents and gain advantages in battles. This tactic is used by species such as snapping shrimps and fiddler crabs, which can exaggerate their size and strength through clever deception.
A study by Kyoto University found that migratory shrimp significantly enriched streams with nutrients, outperforming aquatic insects. The research highlights the crucial role of these small crustaceans in maintaining ecosystem balance and suggests integrating landscape management to support nutrient cycling.
The fossil of Callichimaera perplexa boasts remarkably large eyes that grow throughout development, unlike most crab species. Its exceptional vision suggests it was a highly visual, swimming predator.
A Texas A&M University study reveals that mussel beds shield tiny crabs and isopods from temperature swings and drying out on hot days. This 'ecological air conditioning system' provides crucial protection for heat-sensitive species, helping them weather near-term climate change effects.
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 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 100-million-year-old crab fossil discovered in amber is helping scientists understand the evolution of non-marine crabs. The fossil, named Cretapsara athanata, provides crucial evidence that these crustaceans colonized land around 125 million years ago, bridging a long-standing gap in the fossil record.
A newly discovered ancient crab fossil, Cretapsara athanata, has shed new light on the evolution of crabs. The 100 million-year-old fossil, found in amber, provides evidence that crabs transitioned to land around 100 million years ago, bridging a previously unknown gap in their evolutionary history.
A team of international scientists has discovered a 5-millimeter crab in 100-million-year-old amber, pushing back the age of non-marine crabs to at least 100 million years ago. The find provides new insights into the evolution of true crabs and their spread across the world.
A team of scientists has discovered the oldest modern-looking crab, Cretapsara athanata, preserved in 100-million-year-old amber. The fossil is remarkably complete, including delicate tissues and well-developed gills, revealing an aquatic to semi-aquatic animal that defies explanation for its preservation in tree resin.
Invasive fish and crustaceans significantly reduce lake organism abundance, degrading water quality. Researchers provide guidance on managing waterbodies to prevent ecosystem collapse.