Articles tagged with Cephalopods
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Researchers have created a 2-D material that can morph into a 3D structure and change color to blend in with its environment. The material mimics the skin of an octopus, featuring erector muscles that rapidly form shapes to achieve camouflage.
Researchers at National Tsing Hua University studied oval squid behavior in the East China Sea, discovering five common patterns of tone signals and movements used for communication. These patterns, compiled into an ethogram, will aid future behavioral studies in cephalopods and other species.
Researchers found that cephalopods use RNA editing extensively, with over half of their transcribed genes being edited. This process has profoundly constrained the evolution of the cephalopod genome.
A new study suggests that cephalopods, such as octopus and squid, have evolved prolific RNA editing to enable complex behaviors. This mechanism comes at the cost of reduced genomic DNA evolution, with a trade-off between the two processes observed in these animals.
Researchers propose that cephalopods' U-shaped or dumbbell-shaped pupils can judge color by accentuating chromatic aberration, allowing them to focus on specific wavelengths. This unique visual system may enable camouflage and mimicry despite being 'colorblind'.
A study by Harvard University scientists suggests that cephalopods can perceive color through chromatic aberration, which allows them to detect different wavelengths of light. This mechanism enables the animals to create vivid camouflage abilities despite being limited to black and white vision.
A University of Adelaide study reveals a global increase in cephalopod abundance since the 1950s, with rapid growth and adaptation traits allowing them to thrive in changing ocean environments.
A new study reveals that cephalopod populations have consistently increased over the past six decades, with diverse groups exhibiting remarkable long-term trends. The research suggests that cephalopods' rapid growth and adaptability may be key factors behind their proliferation in changing ocean environments.
Researchers have developed an 'octopus-like' skin that can stretch, sense pressure, and emit light. The hyperelastic, light-emitting capacitor (HLEC) device outperforms previous models in terms of elasticity and versatility.
The octopus genome contains widespread rearrangements of genes and a dramatic expansion of genes involved in neuronal development. The research also found novel genes that may be responsible for the creature's unique camouflage abilities.
The California two-spot octopus genome was fully sequenced, revealing widespread genomic rearrangements and a dramatic expansion of genes involved in neuronal development. The findings provide an important foundation for evolutionary studies and deeper investigations into the genetic mechanisms underlying cephalopod-specific traits.
Researchers from OIST, University of Chicago, and UC Berkeley sequence and analyze the first cephalopod genome, unlocking secrets of octopus's intelligent behavior and extraordinary features. The study sheds light on the evolution of cephalopods and their brain development, potentially inspiring robots that can explore the ocean floor.
Scientists observed a rare Pacific striped octopus species exhibiting unusual cohabitation, hunting, and mating behaviors. The species challenges conventional understanding of octopus reproduction, displaying intimate beak-to-beak interactions during mating.
Researchers at UC Santa Barbara have clarified the mechanism of iridescence in squid skin, revealing that specific sequences of reflectins correlate with color output. The study identifies three major types of reflectins and their roles in static and tunable iridocytes.
Researchers found that octopus skin can sense light changes without central nervous system input, using the same opsin proteins as its eyes. This allows for a response to brightness and color, enabling camouflage and communication. The discovery has implications for understanding cephalopod behavior and evolution.
Researchers discovered vampire squid alternate between reproductive and resting phases, a pattern common in fish, not other cephalopods. The slow metabolism suggests longer lifespan than shallow-water squid species, highlighting the need to enhance knowledge of deep-sea organisms.
Researchers have designed 'invisibility stickers' that could help soldiers disguise themselves even when detected by infrared cameras. The stickers use a protein found in squid skin and can be triggered to change their appearance under an infrared camera, making them ideal for camouflage operations.
Researchers found that both biological organisms and electronic devices use similar approaches to change reflective colors, but biology outperforms electronics in efficiency, scalability, and sophistication. Human-made technology excels in speed and color range, but lags behind nature's complex adaptations.
A study published in Proceedings of the National Academy of Sciences reveals that melanin, a pigment found in cuttlefish and squid, remains intact in 160-million-year-old fossils. This finding suggests that the ink-screen escape mechanism of cephalopods has not evolved since the Jurassic period.
Researchers at Duke University discovered that certain mid-ocean creatures can control their reflection by changing skin pigments in response to blue light. This allows them to avoid predators using searchlights, such as squid and octopuses that use this tactic to catch prey.
Scientists have pieced together the most comprehensive phylogeny for mollusks, revealing surprising relationships between enigmatic groups. The study places Monoplacophora, thought extinct, as a sister clade to cephalopods, and establishes a single origin for shelled mollusks.
A team of scientists, led by Roger Hanlon and Naomi Halas, aims to emulate the camouflage ability of squid, octopus, and cuttlefish in high-tech materials. They will explore new avenues of vision research, including distributed light sensing throughout the skin.
Researchers studied freshwater fish fossils to understand the Neogene water cycle in Central Africa. A study proposed that Nuna was Earth's first supercontinent. Ancient cave systems near the Allgau Mountains preserved the oldest radiometrically dated dripstones known in the European Alps.
Researchers at the University of Toronto and Royal Ontario Museum discover new fossils of Nectocaris pteryx, a 500-million-year-old squid-like carnivore. The findings suggest that primitive cephalopods existed earlier than thought, offering insights into their evolution and diversity.
Atlantic longarm octopuses have evolved expert camouflage capabilities, including mimicking the appearance and swimming speed of peacock flounders. Researchers observed uncanny similarities in coloration, form, and movement between the two species, demonstrating an unusual form of disruptive camouflage.
A new study by researchers from the University of Melbourne and others has found that all octopuses possess venomous capabilities, with a common ancient ancestor producing specialized proteins. The team's findings also highlight the importance of cephalopod venoms in drug development for conditions such as pain management and allergies.
A new study reports finding persistent organic pollutants in deep-sea cephalopods, including octopods and squids. The presence of these chemicals suggests contamination of the deep-ocean food web is occurring, with significant implications for marine life.
Nautilus pompilus demonstrated short-term memory lasting up to an hour before fading away, but remembering it again after 6 hours. The living fossil's memory was comparable to that of modern cephalopods, challenging the assumption that complex brains are necessary for memory.
Toothed whales developed sonar to track squid in surface waters at night, allowing them to follow cephalopods as they migrated downwards into darkness. This led to the refinement of echolocation systems, enabling whales to hunt squid in deep ocean depths.