Articles tagged with Crustaceans
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A new Duke-led analysis reveals that hypoxic dead zones in the Gulf of Mexico drive up the price of large shrimp relative to smaller sizes, causing economic ripples for consumers, fishermen, and seafood markets. The study provides the first evidence linking Gulf hypoxia to economic impacts.
A mathematical modeling study suggests that female beauty in animals may be driven by factors beyond romantic attraction. In some species, traits like red-tipped claws or feathery fringes on legs help females compete for resources such as social status or protection.
A new species of hermit crab with bright red stripes has been discovered in the Caribbean. The species, named Pylopaguropsis mollymullerae, features a unique pincer shape and is believed to have an ecological association with moray eels.
A new fossil site in Canada has yielded exceptionally preserved Jurassic marine fossils, including soft-bodied species that rarely fossilize. The site, known as a Konservat-Lagerstätte, offers a unique snapshot of life in the Early Jurassic Panthalassa Ocean.
Researchers from Texas A&M University captured the first-ever footage of a living stylodactylid shrimp filter-feeding at a staggering depth of 4826 meters. The high-quality video reveals the shrimp using its front legs to form a 'filter basket' and captures unprecedented behavior among carideans.
A new species of crab has been discovered in coral rubble off the coast of Guam, with a genus name inspired by 'Harry Potter' character Harry Conley. The species features reduced eyes and well-developed antennae to survive in dark depths.
Dungeness crabs and groundfish such as rockfish and sole are expected to decline due to ocean acidification, while coastal pelagic fish are only slightly affected. The study projects a $220 million annual value decline in Dungeness crab fisheries over the next 50 years.
Bioengineers at the University of Nottingham are trialling biodegradable prawn shopping bags as a 'green' alternative to oil-based plastics. The new material, optimised for Egyptian conditions, aims to lower carbon emissions and reduce food waste.
Researchers found a strong correlation between domoic acid levels in shellfish and El Niño events and the Pacific Decadal Oscillation. A new model predicts domoic acid risks in the Pacific Northwest, helping coastal managers protect public health.
Researchers found that Caribbean spiny lobsters get 20% of their food from lucinid clams with chemosynthetic bacteria in their gills. This discovery highlights the importance of chemosynthesis in shallow waters, supporting populations and fisheries worth millions.
The coconut crab's claws possess the strongest pinching force of any crustacean, with a maximum recorded force of 3,300 newtons, surpassing that of other crustaceans and most terrestrial animals except alligators.
Researchers have designed a model network of marine reserves to protect spiny lobsters and increase fishing yields in Honduras. The study resolves the 'conserve or catch' conflict by showing that it's possible to balance conservation and economic goals.
A new species of tiny, pea-sized crab has been found to parasitize a large date mussel in the Solomon Islands. The crab, named Serenotheres janus, features a unique characteristic plate on its carapace, similar to the two-faced Roman god Janus.
A new genus and new species of freshwater crab, Yuebeipotamon calciatile, has been discovered in southern China's pet market. The species has distinctive features including a maroon-colored carapace, reddish-purplish claws and legs, and long slender legs that aid in climbing and movement.
Researchers found that killer shrimps drove native amphipods out of hiding places, making them easy prey for round gobies. The invasive crustaceans played an indirect role in the decline of native species.
New research reveals female fiddler crabs visit and leave males to find safe burrows from predators, not perfect matches. Female fiddler crabs use a map of burrow positions to survive bird attacks, which is crucial for both mate-searching and burrow-seeking females.
Researchers at Hiroshima University discovered that lobsters wrap their feces in protective membranes to prevent jellyfish stingers from injecting venom. This finding advances efforts for sustainable lobster aquaculture and informs the development of artificial food for farmed lobsters.
Researchers have discovered previously unknown regularities of arthropod limbs based on studies of the remipede Speleonectes tulumensis. The analysis revealed that mathematical formulas can predict the number of setae on each appendage, shedding light on the evolutionary mechanisms of these crustaceans.
Researchers found that mantis shrimp assess opponent strength and aggression using a combination of UV reflectance and chemical signals, allowing them to avoid losing fights. This complex signaling system helps mantis shrimp determine the likelihood of victory in combat.
Researchers discovered mantis shrimp use eye rotations to improve their polarized light vision. This unique ability has significant implications for the development of automated visual systems, particularly in underwater exploration and materials analysis.
The Crab Nebula is home to a spinning neutron star with a 'heartbeat' radiation signature, emitting clock-like pulses of energy. The neutron star is surrounded by expanding debris and glowing gas, revealing the intricate details of this cosmic object.
Researchers found that some male banana fiddler crabs in Australia use a coercion tactic to mate, trapping females in tight burrows. This strategy increases mating odds for males when females enter first.
A consortium of researchers from the University of Southampton and other institutions is leading a project to calculate the role of physical pond conditions in controlling two devastating pathogens affecting Asian aquaculture. The team aims to develop new guidelines for disease management and novel intervention methods.
Male fiddler crabs produce female-luring vibrations in their burrows, serving as a type of 'Morse code' that females decipher to learn about suitors. The length and interval of pulses convey information on male characteristics, influencing female decision-making during mating.
Researchers develop novel herringbone structure in dactyl club, enabling incredible damage to prey while resisting fracture. The unique structure is composed of crystalline calcium phosphate and chitin fibers, offering a new pathway to create ultra-strong composite materials.
A University of Adelaide study found that males with large claws on one side are more gregarious and attractive to females. The left-clawed males tend to disperse more rapidly and occupy more habitats, increasing their chances of encountering a female.
A new study by NOAA Fisheries finds that ocean acidification may slow development and reduce survival of Dungeness crab larvae, which are key to the Northwest marine ecosystem. The research suggests that lower pH levels could extend vulnerable larval periods or jeopardize timing in relation to food sources.
A research team captured unique video of thousands of red crabs swarming in low-oxygen waters just above the seafloor off Panama. The crabs were identified as Pleuroncodes planipes and represent a new southernmost range for the species.
Male fiddler crabs use deception to their favour by blurring the line between original and regrown claws. They adapt their combat strategies based on claw strength, opting for smaller opponents with weakened regrown claws to avoid injury.
A study by UC San Diego biologists found that beach replenishment with offshore sand can lead to a twofold reduction in the abundance of intertidal invertebrates after 15 months. The researchers also discovered that some species, such as sandhoppers and bean clams, recovered within a year, while others declined sharply.
A study found that infected brine shrimp were more resistant to arsenic toxicity, with increased fat-containing droplets and changes in oxidative stress markers. The researchers suggest that parasite infection may protect the shrimp against pollutants through a mechanism known as 'survival of the fattest',
Researchers from the University of Bristol have discovered a new way to create polarizers using the polarization of light in mantis shrimp. This innovative solution could lead to improved optical technologies, such as cameras and sunglasses.
Two new studies by Cornell University researchers link warming ocean temperatures to increased disease outbreaks in marine organisms, including lobsters and sea stars. The findings highlight the need for advanced warning systems to prevent disease outbreaks and protect economically important species.
Cobia, a promising fish for aquaculture, has recently been reported from the Colombian and Panamanian Pacific coast, indicating their rapid spread. The species is considered an excellent food fish, but its invasive potential poses significant threats to native ecosystems in the Eastern Pacific.
A study found that male hummingbirds drive female birds away from yellow-flowered plants, while females prefer red flowers due to male aggression. This competition may lead to the evolution of multiple flower forms to suit different pollinators.
Researchers successfully reconstructed the internal structure of a compound eye from a predatory crustacean dating back 160 million years. This groundbreaking discovery reveals that soft tissue was preserved and provides new insights into the evolution of visual systems, challenging previous assumptions about fossil preservation.
A study by researchers at William & Mary's Virginia Institute of Marine Science shows that removal of derelict crab pots and lobster traps can increase landings by 293,929 metric tons and boost annual revenues by $831 million. The effort generated more than $20 million in harvest value for area watermen in Chesapeake Bay.
Snapping shrimp sound patterns show seasonal variations, with more snaps per minute during summer and fewer during winter. The research highlights the importance of long-term acoustic sampling in understanding marine soundscape ecology.
A new study from Oregon State University found that Dungeness crab fishermen experience a high rate of non-fatal injuries, with the majority occurring during vessel disasters. The researchers also discovered that many of these injuries go unreported, highlighting the need for improved safety measures and reporting systems in the industry.
Researchers found record-breaking levels of domoic acid in a range of species, including fish and Dungeness crab. The toxin's persistence in the food web and sediments led to prolonged exposure and harm to both humans and marine life.
Researchers quantify the amount of drag on entangled whales created by towing fishing gear, revealing significant effects on energy costs and survival. The study provides crucial data for evaluating risks and benefits of whale disentanglements and reinforces current efforts to minimize entangling gear.
Fiddler crabs use polarization vision to enhance detection of objects and rivals. The research found that male crabs responded to approaching targets by freezing, running back home, and assuming a position of vigilance.
Researchers at the University of Queensland discovered that mantis shrimp use circular polarised patterns as a means to covertly advertise their presence to aggressive competitors. This new form of light communication has potential applications in satellite remote sensing, biomedical imaging, and computer data storage. The study also f...
Researchers found that predators benefit from eating invasive prey only when their traditional diet remains intact. Native prey is necessary for predators to stay healthy and prosper. Invasive species may provide a supplemental food source, but they don't replace native prey, which is essential for predator survival.
Researchers found no barriers to prevent king crab populations from arriving on the shallow continental shelf if the water becomes warm enough. The arrival of these crustaceans could radically alter the ecosystem and diminish marine biodiversity globally.
New study reveals blue crabs can survive at oxygen levels as low as 1.3mg/L, contrary to previous findings. Rising water temperatures exacerbate the effects of hypoxia on blue crabs, threatening their populations and management.
The NOAA Marine Debris Program has funded 13 new community-based removal projects, distributing nearly $1.4 million to remove large debris such as derelict vessels and abandoned fishing gear from shorelines and coastal waters. The projects also focus on prevention initiatives and raise local awareness about marine debris.
Researchers use large-field scanning electron microscopy to analyze a shrimp fossil from Brazil's Araripe Basin, discovering rare fossilization process and fractal characteristic. The study provides new insights into the formation of ancient fossils.
A University of Washington study reveals that young chum salmon thriving in Elliott Bay's restored beaches have access to a more diverse range of prey. This shift could provide a nutritional boost for the fish, but may also come at an energy cost as they adapt to changing food sources.
A new study by Michigan State University researcher Arend Hintze found that moderate competition optimally drives the evolution of decision-making strategies in humans. In crowded areas, hermit crabs evolve split-second decision-making to claim new shells, demonstrating a similar phenomenon in human politics.
A new coral reef crustacean species, L. eltoni, was discovered by Dr. James Thomas in Indonesia and later confirmed in Hawaiian waters, serving as an example of an invasive species. The discovery emphasizes the importance of regular environmental monitoring to track such incidents.
A new species of crayfish, Cherax snowden, has been identified in West Papua, Indonesia, and is easily distinguishable from its relatives. The species was named after Edward Snowden due to its orange coloration and shape of body.
Researchers discovered that chitosan, derived from insect and crustacean shells, can effectively destroy up to 90% of pathogens in selected cell cultures. This biopolymer has been found toxic to pathogenic microorganisms, disrupting their membranes without harming healthy cells.
A study by Dr. Jaroslav Smrz and his team revealed that cave-dwelling invertebrates have distinct meal preferences despite harsh conditions. The researchers found evidence of specialization among species, such as a preference for cyanobacteria by scorpions and fungi by millipedes.
Researchers studied the exoskeletons of deep-sea shrimp and shallow-dwelling shrimp, revealing differences in structure and performance. The deep-sea exoskeleton is softer yet capable of withstanding temperature extremes, while the surface-shrimp exoskeleton is harder and better protects against predators.
The first species of Yeti Crab, Kiwa tyleri, has been discovered in the East Scotia Ridge hydrothermal vents of Antarctica. This unique crab thrives in high densities at extremely low temperatures and relies on bacteria for nutrition.
Researchers have identified a new species of Yeti Crab, Kiwa tyleri, found in the Antarctic region surrounding hydrothermal vent systems. This unique crab thrives in extreme environments with temperatures and densities that are challenging for other marine life.
Researchers have discovered that the mantis shrimp's dactyl club can filter out certain frequencies of shear waves, making it an effective material for body armor and athletic gear. The study aims to develop synthetic materials with similar filtering properties for various industries, including aerospace and automotive.
Research shows that estuaries offer a parasite-free zone for Dungeness crabs, allowing them to rid themselves of deadly nemertean worms. The crabs thrive in lower-salinity environments, making estuaries an essential habitat for their survival.
A new coral-dwelling gall crab, Lithoscaptus semperi, was discovered inhabiting free-living corals of the species Trachyphyllia geoffroyi on sandy bottoms near coral reefs. The study highlights the need to protect coral reefs, with the newly designated Tun Mustapha Park being a priority.