Articles tagged with Aquatic Animals
Caribbean box jellyfish have demonstrated complex learning capabilities, including associative learning and memory formation, despite having only one thousand nerve cells. This discovery sheds new light on the evolutionary success of jellyfish and raises questions about the universality of advanced learning mechanisms in animals.
A trained detection dog was found to be more accurate and efficient than humans in detecting sea turtle nests in Florida. The study indicates the potential of using dogs for nest monitoring, which could improve conservation efforts for three sea turtle species.
Researchers at the University of Florida have found suitable substrates and growth patterns for long-spined sea urchins, a keystone species in maintaining coral reef health. The study provides a crucial step towards restoring these vital ecosystems by growing corals in ocean nurseries.
Researchers found that shoreline spiders can move mercury pollution up the food chain to land animals like birds and bats. The study suggests these spiders can serve as a potential link between aquatic and terrestrial wildlife, informing management decisions.
Researchers argue that considering an animal's entire 'parasitome' is crucial for understanding its place in the food chain. By analyzing stable isotopes, scientists can determine who is eating whom and how parasites affect behavior and metabolism.
Researchers found high levels of anthropogenic uranium in turtles and tortoises from areas contaminated with nuclear fallout and waste. The shells of these animals can serve as environmental monitors for legacy contamination.
Researchers discovered a vast array of tardigrade species in Denmark, with unique DNA sequences detected in 96 samples, highlighting their adaptability to various environments. The findings shed light on the incredible survival abilities of these tiny creatures, which can withstand extreme conditions.
The NIH zebrafish image was taken to study lymphatic vessel development in the brain and has led to a groundbreaking discovery that fish have lymphatic vessels inside their skull. This finding could expedite research into treatments for diseases affecting the human brain, such as cancer and Alzheimer's.
Researchers analyzed aerial images of seal colonies to study distribution patterns and found harbour seals stay at larger distances from conspecifics than grey seals, suggesting an evolutionary response to respiratory virus susceptibility. This finding provides opportunities to gather more information about pinnipeds in remote regions.
A new study reveals how Aulacopleura, an ancient sea-dwelling trilobite, developed variable mid-section segments to tolerate dips in local oxygen levels. This adaptation allowed the species to thrive despite being preyed upon by larger predators.
A new study reveals that trumpetfish can conceal themselves by swimming closely behind another fish while hunting, reducing the likelihood of detection. This unique strategy, known as 'shadowing', uses a non-threatening species of fish as camouflage to approach prey.
Researchers at the Marine Biological Laboratory have devised a method to precisely alter rotifer genomes using CRISPR-Cas9, enabling the study of fundamental biology and evolution. The new approach will allow scientists to investigate various aspects of biology, including aging, DNA repair mechanisms, and mitochondrial function.
Researchers at Penn State discovered that bioluminescent bacteria use a small RNA molecule called Qrr1 to coordinate their behavior and colonize the squid's light organ. This mechanism is likely widespread among bacteria, enabling them to exploit quorum sensing pathways.
An international team of scientists found that sea snakes have enhanced their colour vision due to living in brighter marine environments. The species has four intact copies of the opsin gene SWS1, allowing them to see a wider range of colors.
Researchers from the University of Portsmouth found that biodegradable fishing gear (BFG) does not significantly reduce the cost of ghost fishing due to decreased fishing efficiency. The study suggests that implementing BFG could still have economic benefits, but only if it can achieve similar fishing efficiency as traditional gear.
A mathematical approach using statistical methods can estimate when whales like narwhals and bowhead whales will return to their natural behaviour after being tagged. This method allows researchers to avoid discarding too much or too little data, reducing the risk of interfering with research results or animal welfare.
New research reveals that sunscreen contamination may be less harmful to wildlife than previously thought, with exposure posing a low risk to small aquatic animals compared to individual chemicals.
A new analysis reveals megalodon's ability to regulate its body temperature, with temperatures up to 13°F warmer than surrounding water. This suggests the shark was warm-blooded and had an evolutionary advantage that may have contributed to its extinction.
Fossil evidence confirms that long-necked marine reptiles like Tanystropheus were vulnerable to predation. Researchers found bite marks on two specimens with severed necks, suggesting they were decapitated during a violent event.
Scientists discover that warmer temperatures cause sea sponges to lose essential microbes, leading to tissue poisoning and necrosis. This study highlights the impact of climate change on marine ecosystems and the potential loss of medicinal molecules.
Artificial night-time light confuses a colour-changing coastal woodlouse, according to new research. The sea slater's ability to change colour and blend in is disrupted by diffuse light, making it more visible to predators.
A new study from the Gibson Lab at Stowers Institute for Medical Research sheds light on how some of Earth's earliest animals evolved. Researchers discovered that a common genetic toolkit is deployed in different ways to drive embryological development, producing diverse adult body plans.
A team of researchers urges governments to manage plastic production, use, and recycling by categorizing plastics as persistent, bio-accumulative and toxic (PBT) pollutants. Plastics' long-lasting nature and accumulation in organisms pose significant environmental and health risks.
The Clarion-Clipperton Zone is home to an estimated 5,578 different species, with 88-92% of them entirely new to science. Researchers have discovered a variety of unique species, including sea cucumbers, nematodes, and sponges.
A study by McGill University found that microplastic pollution alters the gut microbiomes of seabirds, increasing pathogens and antibiotic-resistant microbes. The research warns humans to be wary of microplastics in their environment and food, as they can also impact human health.
A new species of mosasaur, Stelladens mysteriosus, has been discovered in Morocco with star-shaped 'screwdriver teeth'. The unique arrangement suggests a specialised feeding strategy or diet, but the exact prey remains unclear. This find adds to evidence that mosasaurs were evolving rapidly before their extinction 66 million years ago.
Researchers discovered that scalloped hammerhead sharks close their gill slits during deep dives to prevent heat loss and keep warm. This unique behavior allows them to hunt effectively in cold water depths.
Researchers discovered that Obamus coronatus, a half-inch long Ediacaran animal, preferred to live on specific parts of the sea floor in the company of other Obamus. This finding shows that even without modern descendants, ancient animals could exhibit sophisticated behavior and habitat selection.
Scientists have used sub-surface imaging and aerial surveys to uncover the Red Lily Lagoon area in West Arnhem Land, revealing significant implications for understanding the First Australians. The study provides a new way to understand the rock art in the region, which is recognized globally for its significance and distinctive style.
Researchers found high levels of coral pathogens in fish that graze on algae and detritus, while those that eat coral had beneficial bacteria in their feces. These findings suggest that corallivore feces could act as a 'coral probiotic,' potentially benefiting coral reefs.
A team led by the Chinese Academy of Sciences has found a well-preserved 'Marine Dwarf World' from 462 million years ago at Castle Bank, Wales. The site features over 150 species, including arthropods, worms, sponges, and starfish, with many preserved in minute detail.
The concept of nature's chefs offers a new perspective on species interactions, highlighting the diversity of food-making and preparing species across the tree of life. This interdisciplinary approach aims to inform how people think about food across various disciplines.
Researchers analyzed octopus and squid sensory receptors to discover new families of chemotactile receptors that drive distinct behaviors in the environment. These findings provide insights into the molecular basis of novelty across levels of biological organization.
A team of researchers from South Africa has discovered exceptional trace fossils that provide insight into the locomotion of ancient giant amphibians. The fossils, found on a rock surface once part of a tidal flat or lagoon, suggest these animals propelled themselves through water with continuous side-to-side tail motions.
Researchers from Spain, Italy and Norway uncover a cluster of water channel genes in teleosts that allow eggs to float. The study reveals unique mechanisms for hydrating maturing eggs, which determines their buoyancy.
A rare strain of Toxoplasma has been found in California sea otters, killing them with severe inflammation and potentially threatening other marine life. The COUG strain was first detected in Canadian mountain lions, and its impact on humans and other animals is unknown.
A recent study has identified a rare strain of Toxoplasma gondii, COUG, in sea otters that caused fatal steatitis and toxoplasmosis. The strain is virulent and can rapidly kill healthy adult otters, posing a health threat to other marine wildlife and humans.
Research found that inbreeding is a major factor contributing to the decline of the endangered Southern Resident killer whale population. The study, published in Nature Ecology and Evolution, indicates that inbred individuals have lower survival rates and birth rates compared to those with lower levels of inbreeding.
The IUCN Species Survival Commission has recognized two iconic Chicago institutions as Centers for Species Survival, elevating the region's role in biodiversity conservation. Shedd Aquarium and The Morton Arboretum will collaborate on projects highlighting aquatic and terrestrial linkages in Central American biodiversity hotspots.
Researchers analyzed chemical isotopes in 1002 skin samples to study the distribution of southern right whales and long-term environmental changes in the Southern Ocean. The study shows that the whales' foraging grounds have shifted, reflecting changing prey distributions, and that climate change has driven recent shifts.
Researchers at Curtin University found a catastrophic decline in biodiversity at the west end of Rottnest Island, with some species experiencing declines of up to 90% between 2007 and 2021. The study highlights the impact of global climate change on marine ecosystems even in protected areas.
A new study finds that salp blooms can offset as much CO2 as emitted by millions of cars, with some estimates suggesting up to 28,000 vehicles. Salps' unique features and rapid reproduction lead to large amounts of carbon being exported to the deep sea.
A 319-million-year-old fossilized fish has provided the oldest example of a well-preserved vertebrate brain, shedding new light on the neural anatomy and early evolution of ray-finned fishes. The discovery reveals that brain evolution in these animals unfolded more complexly than previously thought.
A new study from Oregon State University found that both cotton and synthetic microfibers have negative impacts on the behavior and growth of aquatic organisms. The research, published in Frontiers in Marine Science, suggests that increasing awareness and control over fiber release can help mitigate these effects.
Fossils of a type of sea worm, Iotuba chengjiangensis, have provided new insights into the evolution of annelid worms. The discovery suggests that these worms diversified into different lineages around 515 million years ago, during the Cambrian explosion.
Evans' five-year grant will examine how modularity affects the evolution of complex biological structures and provide a framework for their study. The research could advance our understanding of shape change in other complex structures and have cultural and historical significance.
Researchers found muskies' size, boldness, and exploration levels are linked to their likelihood of striking. Anglers should prioritize catch-and-release and best practices to protect these traits.
Researchers found wolves in Alaska replaced deer with sea otters as their main food source within a few years. The wolf pack's diet changed dramatically, with sea otters making up 57% of their diet by 2017, while deer frequency declined to 7%.
Scientists discovered high levels of toxic chemicals, including 4-nonylphenol from toilet paper, in the bodies of orcas in B.C., which may contribute to their population decline. Forever chemicals like 7:3-fluorotelomer carboxylic acid were also found, highlighting the need for pollution management and regulation.
Research by Dr. Jessie Turner and colleagues highlights the impact of water-clarity metrics on seagrass and light-loving organism restoration goals. The study suggests that different measurement methods can misrepresent underwater light climates, emphasizing the need for clear communication of methods used.
Researchers explore the importance of understanding whale carbon sequestration potential to combat climate change. Whales can store more carbon than small animals, influencing nutrient dynamics and carbon cycling over ocean-basin scales.
A new fossil site in Morocco has revealed giant arthropods that were up to 2m long and played a unique role in ancient ecosystems. The discovery opens new avenues for paleontological research and provides insights into the evolution of early animal life on Earth.
Researchers found that coral microbiomes shed nutrient-loving and pathogen-associated microbes while increasing nitrogen-fixing microbes during dormancy. This restructuring helps maintain the coral's microbial community structure.
A study explores the link between shark nose shape, size, and sensitivity of smell. The researchers found that more lamellae in rosettes with an elongated shape are associated with increased odor sensitivity.
A new study reveals that global warming and ocean acidification are threatening marine organisms with calcium carbonate skeletons, such as corals and sea urchins. The researchers found a clear pattern showing that species with high levels of magnesium in their skeletons become more common with warmer seawater temperatures.
A new study on a 525-million-year-old fossil has shed light on the origin and composition of arthropod heads, resolving a century-old debate. The discovery of a delicately preserved nervous system in the fossil of Cardiodictyon catenulum, a tiny sea creature, suggests that the brain and trunk nervous system evolved separately.
A distinct population of oceanic manta rays was identified off the coast of Ecuador, with an estimated total population of over 22,000 individuals, making it more than 10 times larger than any other known subpopulation. The population is large and potentially healthy due to favorable conditions in the region.
A new study reveals that global warming can lead to an exponential increase in heat injury accumulation for ectothermic organisms, with temperatures exceeding their tolerance level resulting in severe injuries. The rate of heat injury doubles for each degree the temperature rises.
Scientists have found that narwhals are changing their migration patterns in response to sea ice loss due to climate change. The study, published in PNAS, shows significant delays in autumn migrations and sex-specific differences in departure times.
Marine protected areas significantly increase carbon sequestration in seagrass and mangrove ecosystems. Biodiversity and species richness also rise in preserved waters, contributing to food security and human well-being. Full protection is necessary for maximum benefits.