Articles tagged with Evolutionary Ecology
Biologists from UMass Amherst discovered two of the world's loudest birds, the bare-throated bellbird and red-legged seriema, with volumes exceeding 120 decibels. A new study measured the amplitude of 123 bird calls, resulting in a 58-decibel variability, with the hummingbird's call being the quietest at 64 decibels. The study found a ...
An international team reconstructed a 1,000-year timeline documenting human impact on the ecosystem surrounding Crawford Lake. The analysis of sedimentary ancient DNA samples revealed changes in plant, animal, and microbial communities over the centuries.
Meret Huber receives EUR 1.5 million in EU funding for her project Plant Metabolites as Keystone Traits (METABOKEY), investigating how plant metabolites shape ecological communities. The research aims to answer whether certain plant compounds can act as 'keystone traits' and determine ecosystem structure over generations.
A study by Queen Mary University of London finds that young chimpanzees develop distinct population-specific vocal patterns as they mature. This development is influenced by social interactions, environmental conditions, and other non-genetic factors, suggesting a more flexible and dynamic communication system than previously recognized.
Researchers found that infected tadpoles preferred cooler temperatures and regulated their body temperature to slow viral replication. The study suggests that behavioural cooling may help animals combat viral infections, providing a physiological advantage over the detrimental effects of low temperatures.
A new statistical model predicts which Red Sea fish species are likely to invade the Mediterranean, with a focus on their ability to survive without coral reefs. The study identifies three species with high potential to invade: stellate pufferfish, cinnabar goatfish, and yellowspotted trevally.
Researchers used an AI tool to demonstrate that birds in Passeriformes evolved in rapid bursts and coincided with climate shifts throughout Earth's history. The findings suggest that environmental variation may be an important cause of changes in body shape.
A recent study found that wild snapdragons use subtle shades to attract bees, with four paintbrush genes working together to create a gradient of yellow. The strength of natural selection on each gene was estimated using a hybrid zone where two varieties meet, revealing the intricate mechanisms behind molecular gradients.
Researchers discovered that cyanobacteria band together into protective flocs when attacked by predators, a survival strategy that could influence how carbon is stored in the world's waters. This behavior helps explain why cyanobacteria invest energy in forming flocs despite the apparent cost to their growth.
New research shows that tadpoles adapt their diet in response to rising temperatures, consuming more plant material and eating overall. However, this natural strategy becomes less effective as temperatures continue to rise, with consequences for growth, development, and survival.
A new study found that longer pair bonds in Florida Scrub-Jays independently increase reproductive success, with experienced birds producing more offspring. The research also showed that younger birds paired with older mates have lower survival odds.
Researchers at the University of Michigan found that pollinators are driving plant adaptation in morning glories, leading to a steep decline in their ability to adapt to changing climate conditions. The study suggests that human activities such as pesticide use and habitat destruction have contributed to this decline.
Research on landfill-foraging white storks reveals a trade-off between food availability and increased risks from stress and DNA damage. Preliminary results show that young storks foraging on landfills have higher energy stores but also exhibit DNA damage at an early age.
A new study reveals that brief warm temperatures disrupt the internal bacterial ecosystem of dwarf spiders, leading to a sudden comeback of male offspring. The research found that thermal stress triggers a transgenerational shift in microbial dynamics, with a rival bacterium blocking the feminizing bacteria and allowing males to thrive.
A new study reveals that wolves from different regions have distinct skull shapes shaped by their environment and human activities. The research highlights the importance of considering local adaptations in wolf reintroduction and conservation plans to ensure success.
Researchers found that a fungus's metabolic breadth, or range of nutrients it can use, links its ability to kill insects, partner with plants, and thrive in different ecological roles. Strains capable of using a wider range of nutrients were faster and deadlier at killing insects and more effective at colonizing plant roots.
A UMD-led study reveals that wild bats balance different types of immune defenses based on sex, age, and competition for mates. The researchers found that male bats rely more on rapid-response immune defenses, while females invest in targeted responses to pathogens.
Research reveals bacteria rely on circadian clocks to organize colonies, controlling gene expression and pattern formation. The discovery has important implications for understanding bacterial ecology and improving plant growth.
Researchers found that even morphologically similar pollinators can differ markedly in the diversity and heterospecificity of pollen they transport. This variation has important implications for understanding how different pollinators influence plant reproduction and evolution.
Scientists at MIT developed a theoretical model that predicts the severity of most mass extinctions based on the mismatch between environmental change and biological adaptation rates. The study successfully predicted the fraction of life that went extinct in Earth's history, suggesting that life has evolved to adapt at a similar scale ...
Researchers found mycorrhizal fungi in desert moss, unlike those found in less harsh conditions, suggesting a deliberate relationship. The discovery could rewrite moss biology and offer clues about the origins of life on land.
A research team has discovered that complex chemical signals merge in the environment to form dynamic 'chemodiversity landscapes' with emergent properties. These patterns can generate novel ecological effects, shaping entire ecosystems and influencing interactions between organisms.
Adélie penguins use social information to acquire knowledge about food sources, often departing with multiple conspecifics to gather this info. This strategy helps unsuccessful foragers adapt their search strategies and increase their chances of finding food.
Extraordinary fossils from China confirm that bryozoans were active participants in the Cambrian explosion. The fossils, preserved in three dimensions with soft tissues intact, provide definitive evidence of a bryozoan affinity and rewrite the timeline for the origin of this phylum.
Researchers found that Ohio wall lizards' rapid population growth and adaptation to their new environment, with similar climate and habitat, contributed to their success. The study suggests that ecology plays a more significant role in the lizards' invasion than genetic factors initially thought.
A novel fecal proteomics method confirms orangutan mothers breastfeed their offspring continuously until 6.5 years old. This prolonged breastfeeding supports the high survival of orangutan offspring and contributes to their slow reproductive strategy.
Researchers have discovered a new, previously unknown biofluorescent trait in the fire salamander, which may facilitate communication among individuals and influence mating behavior. The phenomenon is thought to be linked to toxic secretions on the animal's skin.
A new spider species, Theridion himalayana, has been discovered in the Indian Himalayas with 32 different color variations, or 'morphs', found across three locations. DNA analysis revealed a genetic variation of approximately 8.5% from its Hawaiian happy-face spider cousin.
Researchers discovered that fungal effector proteins evolved from ancient antimicrobial proteins to weaken host immune systems and manipulate the surrounding microbiome. These findings provide new insights into how fungi attack both hosts and beneficial microorganisms, with potential applications in agriculture and medicine.
A large-scale field experiment revealed that wild sulphur-crested cockatoos learn what foods are safe to eat by watching each other, with males more likely to follow other males. The study found that social relationships play a crucial role in shaping animal behavior, and that knowledge can spread rapidly through flocks.
Researchers studied evolution of Scalesia genus, finding lobed leaves evolved through multiple genetic pathways. The study highlights the flexibility and creativity of evolution, with new species forming and populations showing large genetic differences.
A new study reveals that the disappearance of large mammals led to significant changes in food webs across different continents. The researchers found that regions with more severe past extinctions had distinct differences in their current mammal populations, indicating a lasting impact on food webs.
A new study reveals that conspicuous markings, including 'eyespots', evolve under specific ecological conditions. Smaller skates and rays, lacking strong physical defences, are more likely to develop bold spots or eyespots in well-lit, shallow waters.
A new study found substantial changes in cane toad body size and shape have developed rapidly in response to environmental pressures on Ishigaki Island in Japan. The toads there are heavier and larger than those in Australia, with wider heads and shorter arms and longer legs.
African elephants' genetic history shows they once moved across large distances, exchanging genes throughout the continent. However, current patchy habitats and human activities have led to genetic consequences of isolation, affecting conservation approaches.
Researchers found two strategies used by bacteria to colonize new habitats: acquiring new traits and reducing genome size. This study sheds light on the evolutionary biology of soil microbes, revealing unexpected results about their adaptation to freshwater environments.
Researchers found that trematode parasites are more abundant in cooler temperate waters, defying the typical pattern of higher biodiversity near the equator. Temperature and host mobility play a major role in shaping parasite distributions, with certain species thriving in areas where hosts can tolerate infections better.
Researchers tracked genetic changes in Arabidopsis thaliana across 30 sites over five years, finding most populations adapted to local environmental conditions. However, some populations went extinct due to genetic drift, highlighting the importance of preserving biodiversity.
A groundbreaking experiment tracked plant evolution in response to climate change across 30 sites worldwide, revealing gene variants associated with successful adaptation and tipping points beyond which plants can't adapt. The study provides quantitative data to understand rapid adaptation and predict where risks lie.
A new study reveals that turtles surviving the Cretaceous-Paleogene extinction event largely relied on a diet of hard-shelled organisms. This ecological adaptation allowed them to thrive in environments where other species struggled to survive, with dietary specialization being a key factor in their survival.
A new open access database of cactus ecology and evolution could help scientists and conservationists save species from the brink. The CactEcoDB offers an unprecedented window into the evolution, ecology and conservation needs of one of the world's most distinctive and endangered plant families.
Researchers found that specific amino acids in the TRPM8 protein of salamanders that prefer cooler environments lead to diminished cold sensitivity. This discovery provides insight into the mechanisms behind temperature-sensing channels in tailed amphibians.
Research from Lund University reveals that female mosquitofish from different habitats exhibit aggression towards males from other environments, leading to reduced fertilization success and potential reproductive isolation. This phenomenon highlights the importance of female resistance as a mechanism underlying evolutionary processes.
Researchers used diffusion MRI to study the brains of seals, sea lions, and coyotes, finding a 'brain bypass' that allows for vocal flexibility. This discovery may hold the key to understanding the evolution of human language.
A new study led by University of Arizona researchers suggests that global vertebrate biodiversity has been significantly underestimated, with on average two unrecognized species for every recognized one. This finding could have consequences for conservation efforts if these hidden species are not properly identified.
Researchers found that birds adapting to sugar-rich diets evolved both shared and unique genetic changes, affecting genes controlling blood pressure, heart rhythm, and insulin signaling. These findings hold promise for understanding metabolic diseases like diabetes and may lead to new therapeutic targets.
Researchers found that long-standing mating preferences led to sex-biased interbreeding, resulting in the loss of Neanderthal DNA on X chromosomes. The study reveals a complex social history of human evolution, challenging the idea that survival of the fittest drove human migration.
A new study reveals that animal species with fast-paced ecologies have faster visual perception, tracking prey in mid-air versus grazing slowly across the seabed. This finding supports Autrum's hypothesis and highlights how ecology shapes the tempo of perception across life on Earth.
Researchers at the University of Cincinnati found that female caribou gnaw on shed antlers to supplement their diets with calcium and phosphorus, essential for milk production. The study, published in Ecology and Evolution, reveals a previously overlooked benefit of shed antlers in the Arctic ecosystem.
A new study reveals that the presence of older fish accelerates bar loss in young tomato anemonefish, a process linked to social hierarchy and environmental adaptability. The researchers suggest this may be an insurance policy against invasion, with younger fish losing their bars as they are accepted into the group.
A new study found that turtles' brains can detect unexpected visual stimuli independently of their position on the retina, a property previously thought to exist only in mammals. The researchers believe this ability helped animals understand their spatial environment, learn, and survive complex terrestrial environments.
A UT San Antonio assistant professor is studying how climate change and urbanization affect freshwater ecosystems by tracking the expansion of exotic tropical fish species into northern regions. The project aims to provide practical tools for natural resource managers to protect Texas waterways.
Urbanization may be shaping the spotted lanternfly's spread into new environments by allowing them to adapt to heat, pollution, and pesticides. The insects' genetic diversity is lower in the US compared to China, but they are still adapting to local climate conditions.
Research reveals three major types of ant societies: small colonies with a single queen and diverse workers in tropical regions, large colonies with multiple queens and uniform workers in deserts, and temperate regions with polygynous and monomorphic colonies. Environmental conditions shape these social structures on a global scale.
Researchers found that the green-flowered Aeschynanthus acuminatus evolved on the mainland, not in Taiwan, and adapted to shorter-beaked birds. This contradicts the Grant-Stebbins model of plant evolution, which predicted the species would evolve in Taiwan with new pollinators.
A study led by Lund University reveals how a dominant wall lizard species has wiped out several color variants within its population. The researchers analyzed data from over 10,000 individuals and found that the aggressive 'Hulk' lizards have shifted the balance of colors, leaving only white throat colors remaining.
A study led by Dr. Frédérik Saltré suggests that sterilizing 22% of adult females annually could stabilize the population at an estimated cost of $34 million over 25 years. This approach prioritizes both animal welfare and ecosystem health, offering a humane solution to the unsustainable koala numbers.
A new study reveals that resilient nematodes can persist in the Atacama Desert's hostile soil, with population diversity correlating to water profile and temperature fluctuations. The findings suggest that biodiversity in arid regions may be higher than previously assumed, but also warn of ecosystem damage.
According to a University of Arizona-led study, scientists are discovering new species at a rate that far exceeds extinction. The team analyzed taxonomic histories of 2 million species and found an average of more than 16,000 new species each year, including insects, plants, fungi, and vertebrates.
Researchers found that some phage-resistant mutations enhance bacteria's ability to sink carbon, while others slow down growth rates. The study suggests that the selection of surface mutants may play a key role in marine biological pump and carbon export.