Articles tagged with Aquatic Animals
A recent study by Jennifer Welsh found that various sea creatures, such as sponges, crabs, and cockles, can remove a significant portion of virus particles from seawater. These findings suggest that non-host organisms play an important role in regulating virus populations in marine environments.
A new study published in Nature Ecology and Evolution found that plants and animals share similar patterns of niche evolution in response to climate change. The research analyzed climatic data from 952 plant species and 1,135 vertebrate species, revealing that both groups have a narrow breadth of tolerated environmental conditions.
A new study by an international team of scientists reveals that the Cambrian Explosion was driven by abundant ecological opportunity early in life history. The researchers found that complex features become burdened by their own complexity, limiting evolutionary innovation. This discovery clarifies evolution and development during the ...
A new study published in Geology found that Late Cretaceous ecosystems in North America were characterized by diverse and mixed diets, with resource interchange between aquatic and terrestrial components being common. The research used stable isotope analysis to reconstruct the diets and habitat use of dinosaurs and other animals, cont...
Researchers have proved one of Charles Darwin's evolution theories for the first time, showing that mammal subspecies are crucial to long-term evolutionary dynamics. The study, led by Laura van Holstein, found that subspecies play a pivotal role in shaping the future of species, particularly in response to habitat disruption.
Researchers found fossilized thread-like filaments connecting organisms across nearly 40 sites in Newfoundland, Canada. The discovery may have revealed ancient social networks and challenged earlier studies of Ediacaran organisms' interactions.
A new study in PLOS Biology identifies a regulator of jellyfish egg release, shedding light on the evolution of complex hormonal control in animals. The discovery sheds insight into how oocytes transform into eggs and may hold clues for understanding the link between sexual reproduction and nutrition in animals.
A team of researchers led by Dr. Matthew Knope found that ecologically diverse animal groups are more resistant to extinction and dominate the modern ocean's biodiversity. The study analyzed fossil and living marine animals over 500 million years, showing a link between diversity and resistance to mass extinctions.
A new study has shed light on why the world's oceans are home to an astonishing array of species, with slow and steady evolution playing a key role in their diversity. The research analyzed over 20,000 fossil marine animals and found that ecologically flexible groups tend to be more resistant to extinction.
Scientists have found that gene loss played a crucial role in the evolution of animals, particularly in deuterostomes and ecdysozoans. The study revealed unprecedented levels of gene loss in these lineages, contradicting the assumption that evolution leads to increased complexity.
Scientists have discovered the earliest known example of an animal evolving to lose body parts it no longer needed. Facivermis, a worm-like creature from the Cambrian period, evolved to lose its lower limbs due to its tube-dwelling lifestyle anchored on the sea floor.
A new study found that extinction resistance, not ecological differentiation, drove the evolution of diverse marine animal life. Ecologically diverse clades became dominant due to their ability to survive mass extinctions, resulting in strong correlations between ecological diversity and taxonomic richness.
A new study found that parasitic trematode worms produce greater standing armies in areas of greater threat, demonstrating for the first time that animal societies can adjust army size to meet threat levels. The research showed that snails collected in locations with high risk of invasion had larger numbers of soldier worms.
A German research team has identified bony fish as particularly sensitive to climate change, with snails and oysters being less threatened. The study combines fossil data with experimental studies, providing a basis for future collaboration and more precise predictions of species extinction.
A new study reveals that the world's most biodiverse regions are under threat from human-driven climate change, with tropical ecosystems expected to lose over 75% of their climate-safe habitats by the end of the century.
Researchers assess water quality, oxygen levels and microbiomes in lakes with hippo populations, finding nutrient and organic material inputs alter chemistry and oxygen. The study suggests exponential growth of the population, posing questions about human interactions and ecosystem disruption.
Researchers argue for mobile marine protected areas in international waters to protect highly mobile species affected by climate change. New technologies, such as satellite tracking, enable dynamic management strategies that adjust to species' movements and habitats shifts.
Researchers have discovered a fossilized scorpion from the Silurian period, revealing its transition from aquatic to terrestrial life. The ancient animal's internal organs show similarities to modern-day scorpions and horseshoe crabs, indicating it was pre-adapted for life on land.
A study by University of Copenhagen researchers reveals that tardigrades are vulnerable to long-term high temperature exposures, with median lethal temperatures ranging from 37.1°C for active animals and 82.7°C for desiccated specimens. This finding highlights the Achilles heel of these super-resistant animals.
Research on fossilized fish from the late Devonian period details the evolution of fins as they began to transition into limbs. The study used CT scanning to examine fin shape and structure, constructing digital 3D models that allowed researchers to infer how fins worked and changed.
A RMIT University study found that floral foam breaks into tiny pieces, ingested by freshwater and marine animals, causing stress responses. The vast majority of florists dispose of foam particles down the sink or drain, contributing to microplastic pollution.
A new European research project, HOTMIC, aims to investigate the fate of microplastic in the North Atlantic Ocean. The study's lead researcher suggests that microplastic particles may be transported by microorganisms or marine animals, which could have a significant impact on the marine ecosystem.
A new study describes a 480-million-year-old fossil named Athenacrinus broweri, which helps rewrite the family tree of sea lilies. The fossil's arm structure reveals that modern sea lilies evolved from ancient ancestors with plates in their bodies similar to those found in earliest crinoid arms.
Researchers at Tohoku University have cracked the code of centipedes' flexible motor control mechanism, enabling them to walk on land and swim in water. The study's findings will aid in developing robots that can adapt to various environments.
A unique breeding project at SEA LIFE Sydney Aquarium is designed to save the native White's Seahorse species in Australia. The project, led by Robbie McCracken, has successfully bred and raised six babies, with plans to release them into the wild next year.
The study of two Siberian blue lakes reveals a similarity in zooplankton species composition to other Western Siberian lakes, with species such as cladocerans and copepods dominating. The concentration of heavy metals exceeds sanitary standards, but is characteristic of the region's aquatic ecosystems.
A team led by the University of Exeter suggests that animals carrying sensors can fill gaps in ocean monitoring, particularly in areas near poles and shallow coastal regions. The study highlights the potential for animal-borne sensors to enhance our understanding of climate variability and weather patterns.
Researchers have discovered that peacock mantis shrimp prefer the taste of white meat over red tissue from disco clams, suggesting that color may not be a warning signal. The study aims to determine whether mantis shrimp can learn to fear the color red and its potential role in evolution.
Researchers analyzed stable carbon and nitrogen isotopes in fur samples from 29 species of mammals to measure the impact of agriculture on their diet. The study found that herbivores and omnivores inhabiting forest fragments consumed agricultural resources, while carnivores close to croplands preyed on prey that feed on these resources.
A new study suggests that emperor penguins in Antarctica are likely to decline by 86% by 2100 due to sea ice loss, with only a 5% chance of survival under the 1.5 degree Celsius scenario. The 'business as usual' scenario is even more dire, with nearly complete colony loss and extinction imminent.
Researchers at Kyoto University found that bottlenose dolphins can coordinate their behavior in a rope-pulling task, with initiators waiting for followers to reach the task and followers matching the initiator's swimming speed. This flexible coordination is likely rooted in their patterns of affiliative behavior.
Researchers found that iron-poor environments limit fish populations worldwide, including areas with no fishing activity. The study highlights the crucial role of iron in marine animal ecology and suggests a new perspective on fish life cycles.
Researchers at Swansea University found that common shore crabs can learn the path of a maze to find food and recall it two weeks later. The study showed significant improvement in navigation time and accuracy over four weeks.
A recent study analyzed over 4.7 million mtDNA sequences from GenBank and found fewer errors than predicted, with less than 1% of sequences mislabeled. The researchers identified potential sources of error, such as human or lab animal contamination, but overall found GenBank to be a reliable tool for environmental DNA identification.
Researchers have discovered a new species of choanoflagellates that can act together to change shape and swim. The microbes use light-sensing proteins to coordinate their movements, suggesting this ability pre-dates the first animals.
Researchers discovered that warty and smooth-skinned octopuses from different depths are the same species. The deeper they live, the bumpier their skin and smaller their bodies. Genetic analysis confirmed these findings, indicating that environmental factors, such as food availability, influence the animals' appearance.
The authors propose an 'internet of health' where wearable sensors provide non-intrusive data on a person's health, correlated with environmental factors. This could lead to early disease prevention and personalized medicine.
A new fossil stingray, Lessiniabatis aenigmatica, has been discovered with an exceptional anatomy that differs from living species. The find provides insights into the evolution of these animals and their recovery in marine ecosystems after the end-Cretaceous mass extinction.
A University of Washington team developed an artificial suction cup that borrows from the Northern clingfish's natural design, performing better than its natural counterpart. The prototype held up to 230 times its own weight and was flexible enough to conform to rough surfaces.
Scientists at the Buck Institute are exploring the genetics of mice that can regrow axons after injury to develop new treatments for human brain injuries and diseases. The researchers will use a new method to identify genetic differences between closely related species, which may hold the key to boosting lifespan or healthspan in humans.
A new study finds that copepods, small crustaceans found in nearly every freshwater and saltwater habitat, adapt to warming waters through phenotypic plasticity rather than genetic changes. The research suggests that thermal adaptation can happen relatively quickly, reducing organisms' vulnerability to warming.
Scientists at UMass Amherst and Perth Zoo have created the world's first accurate, publicly available 3D model of the endangered Southern white rhino. The model will be used for conservation efforts and educational purposes, providing a powerful tool to assess an animal's body condition in the field.
A fossil skull found in a Bavarian town in the 1770s has been recognized as Mystriosaurus laurillardi, a now-extinct species that lived in tropical waters during the Jurassic Period. Researchers have also identified another skull discovered in Yorkshire, belonging to the same species.
Researchers from the GLOBE Institute found that massive fluctuations in ocean oxygen levels during the Cambrian explosion were influenced by animal behavior. The discovery suggests that animals may have controlled their own development through adjustments to oxygen levels, shedding light on Earth's 'heartbeat' and its impact on life.
A new study from Oregon State University found that underwater soundscapes varied widely across four protected marine sites, driven by differences in animal vocalization rates, human activity and weather. The study provides a baseline for these regions and can be used for comparison over time.
A team of scientists has discovered fossils of an ancient animal species, Yilingia spiciformis, which date back approximately 550 million years. The fossilized remains and trails left by the creature provide conclusive evidence of segmented and mobile animals evolving during this time period.
Researchers identified cone snails' hydraulically propelled feeding structure as the quickest movement among mollusks by an order of magnitude. The radular harpoon can propel into prey within 100 microseconds with extreme speeds similar to a fired bullet.
A new underwater gripper developed by researchers at Harvard's Wyss Institute for Biologically Inspired Engineering has successfully caught and released jellyfish without causing harm. The ultra-soft gripper uses hydraulic pressure to wrap around a single jellyfish, then release it, allowing for extensive study of marine organisms.
A study published in Evolution Letters reveals that many carnivorous species share a common ancestor dating back 800 million years, while herbivory is more recent. The research suggests that animals tend to adopt the same dietary category as their closely related species, implying that switching diets may not be easy.
Researchers found that individual cortical neurons cannot find order amidst chaotic signals, but the brain averages many neurons' activity for certainty. External inputs can briefly switch networks to a regime of highly reliable spiking, allowing the brain to overcome noise and chaos.
Researchers found that Bcl11b determines which class of OR gene is expressed in olfactory neurons, switching between class I and II. This mechanism was also seen in frogs, where Bcl11b expression changed from water-nose to air-nose during metamorphosis.
A new study at the University of Hawaii found that a tropical marine sponge obtains essential nutrients from its symbiotic bacteria, not from filtering seawater. This discovery provides insight into the biology of sponges and highlights the importance of marine microbes in their diet.
Researchers have identified a new family of small-molecule metabolites responsible for the bright green color in certain shark species. This unique biofluorescence mechanism allows sharks to identify each other and potentially fight off microbial infections.
Scientists have found that severe marine heatwaves can lead to the death of coral animals themselves, causing the underlying skeleton to decay rapidly. This new understanding highlights the need for urgent action to preserve coral reefs and mitigate the impacts of climate change.
Researchers found that invasive plants have a negative impact on native animals, reducing their abundance and altering ecosystem functions. In contrast, exotic animals are unaffected by invasive plants.
Researchers have identified a previously unknown family of small-molecule metabolites responsible for the bright green color in sharks' skin, which may also aid in identifying other sharks and fighting microbial infections. The discovery opens new questions about the potential functions of biofluorescence in shark biology.
Researchers found that sharks are much rarer in habitats closer to people and fish markets, with a significant drop in average body size. The study suggests that industrial fishing is the main driver of this decline, which has major implications for ocean ecosystems.
A new study investigates the bioenergetics of sharks and rays, revealing how climate change affects their populations. The research suggests that these ocean giants will face compounding climate pressures, including warmer oceans and reduced prey availability.
Researchers discovered that the cuttlefish has a simple microbiome containing only two families of bacteria: Vibrionaceae and Piscirickettsiaceae. The most dense community of microbes was found in the esophagus, contradicting previous assumptions about where microbe populations would thrive.
Researchers at Hokkaido University discovered that five-armed green brittle stars use a pumping movement pattern to coordinate their movements. A mathematical model suggests that internal fluid flow can achieve this coordination without neuronal activity.