Articles tagged with Evolutionary Ecology
During the 2014-16 marine heatwave, an unprecedented 37 tropical species were documented in California and Oregon, with many having never been seen so far north before. This shift is attributed to warmer ocean temperatures, which allowed southern species to track northward, adapting to climate change.
Researchers suggest that bursts of evolutionary activity occurred earlier and were more frequent than previously thought, giving rise to a longer timeline for complex life on Earth. This challenges the traditional view of the Cambrian Explosion as a single, rapid surge of evolution.
An international team of researchers found that mycorrhiza-plant interactions hinder the colonisation of remote islands, acting as a brake on plant spread. This symbiosis is also linked to biogeographic patterns and preserving biological diversity.
Researchers created a complete world map of tree species richness using a statistical model that combines patchy data from small forest plots and country-level information. The analysis shows that climate is the most important factor driving global biodiversity, with the highest number of tree species found in hot, humid tropics.
Researchers explore how phenotypic complexity influences diversification among Lake Malawi cichlids, revealing instance of repeated evolution in converging feeding habits. The study identifies that very different morphologies can translate to similar ecological specializations.
Researchers found that female crickets choose males who lost fights over alpha males for mating. In a study using the cricket Gryllus bimaculatus, females preferred males with lower aggression levels during courtship.
Researchers found that modern humans replaced Neanderthals in southern Spain between 45,000 and 43,000 years ago, pushing back the previously known date by 5,000 years. The discovery suggests a more complex coexistence between both groups for millennia.
A recent study has revealed that bird beak shapes are not as closely tied to their food sources as once believed. By analyzing the beaks of various species, researchers found a weaker and more complex connection between beak shape and feeding behavior.
The study suggests that letting beneficial microorganisms thrive could aid in fighting infectious diseases, as conventional methods may interfere with their natural containment. By adopting a more diverse approach to health, researchers hope to create stronger defenses against pathogens.
Beetles have evolved a hard exoskeleton due to symbiotic bacteria producing tyrosine, essential for cuticle formation. This cooperation has contributed to the evolutionary success of beetles and their spread into new ecological niches.
A new study published in Nature Ecology & Evolution reveals that pterosaurs had at least four types of feathers, including simple filaments and down feathers, which are also found in modern birds and dinosaur groups. The discovery pushes back the origin of feathers by approximately 70 million years.
A Rutgers-led study challenges conventional expectations that fast-growing resources are unlikely to collapse. The study found that those who start conserving can often stick with it, but when conservation is not in place, the opposite is true.
A new study found that urban frogs have more conspicuous and complex vocal calls, making them more attractive to females. In contrast, the simpler calls of forest frogs are less appealing.
A new study by SF State biologists reveals that the distinctive 'horn-like' cephalic lobes of manta rays are actually modified fins, developed through a simple genetic tweak. The researchers found that the same Hox genes guiding fin development in related species also shape the horns in manta rays.
A University of Queensland and Deakin University-led study reveals that predators drive the evolution of cooperative relationships between species like clownfish and anemones. The research found that fish-anemone mutualisms have evolved at least 55 times across 16 fish families over the past 60 million years.
Researchers found that complex adaptive systems with self-organizing processes and low population densities can lead to sustainable resource use. Freedom of movement and an ethos of sharing are key conditions necessary for successful sharing.
A new study presents a unique database on Earth's vegetation, containing over 1.1 million plant species lists from every continent. The 'sPlot' initiative combines datasets to answer questions about plant traits and their responses to global factors.
A special journal issue explores the relationship between rising oxygen levels and the emergence of complex life, suggesting that increased oxygen may have driven innovation in animal body plans. However, debate remains among scientists regarding the cause-and-effect relationship between oxygenation and the evolution of complex life.
Researchers analyzed two shark species' genomes and compared them to those of vertebrate species to understand their evolution. They found that sharks have massive insertions of repetitive elements in their genomes, which may contribute to their slow evolution.
A study by researchers at the University of Wisconsin-Madison found that California mice who communicate calmly after infidelity are more likely to produce a litter of mouse pups and have good fathers. The quality of their conversations helps predict pair bond success, with less aggressive vocalizations indicating a stronger bond.
A study by Oxford University found that individual personalities of male great tits influence their bonding with future breeding partners. Bold, proactive males choose partners sooner and invest more effort in relationships before breeding begins.
Researchers found that wolves prefer to hunt bulls who have already shed their antlers, suggesting that antlers serve as a deterrent against wolf predation. This discovery provides insight into the evolution of elk antler retention time and challenges previous assumptions about the role of antlers in elk behavior.
Beston's research focuses on the ecological drivers of eye and brain size evolution in a species of fish, with funding from the AAUW. Her work reveals that increased predation is associated with smaller eye sizes, while larger eye sizes are correlated with improved vision and fitness benefits.
Will Pearse, a USU biologist, has been awarded a $300,000 NSF grant to study the impact of invasive species like cheatgrass. His project aims to use evolutionary history to model practical ecological challenges and engage students in real-world research.
Research shows that multiple facets of biodiversity, including species richness and plant evolutionary history, jointly reduce annual variation in grassland productivity. High-species-rich communities with diverse histories exhibit reduced biomass production variability.
A Rutgers study finds that popular exotic pet reptiles and lizards are more likely to be released into the wild, causing ecological harm. The research highlights the need for education and resources to prevent these releases and mitigate invasive species.
Researchers found that pale peppered moths are more camouflaged against lichen-covered tree bark than dark moths, making them less likely to be eaten by birds in unpolluted woodland. This supports Darwin's theory of evolution by natural selection and provides key evidence for the evolutionary advantage of camouflage.
Researchers from Harvard University review the tripartite system between bats, bat flies, and Laboulbeniales fungi, highlighting the need for further study on this understudied phenomenon. The team aims to advance our understanding of the biology, host associations, and phylogenetic relationships of these organisms.
A new study published in PLOS ONE found that sleep boosts 'fitness' and future family line reproductive success, suggesting it plays a significant role in evolutionary adaptation. The research used mathematical modeling to compare the fitness of sleeping and non-sleeping strategies under various conditions.
Researchers analyzed ecological features and DNA sequencing data to reconstruct the tree of life of aquatic macroinvertebrates in Europe. They found that oldest lineages have higher functional diversity than younger ones, which is influenced by their ability to colonize new habitats.
Researchers have solved a 160-year-old mystery about the origin of vertebrates' skeletons by studying ancient fossils. They found that heterostracan skeletons were made from a unique tissue called aspidin, which is later revealed to be bone-like in structure.
A Dartmouth-led study proposes that the Lorax viewed himself as part of the Truffula forest ecosystem, not an ecopoliceman, and had a symbiotic relationship with other species. The research also finds that Geisel's inspiration for elements in the Lorax may have been based on actual tree and monkey species in Kenya.
A recent study by UCSB researcher David Herbst explores the connection between benthic invertebrates and stream water flow. The research, published in Hydrobiologia, sheds light on how these organisms sort out and change with stream dynamics. This new understanding has significant implications for water quality monitoring programs.
Researchers found that removing coral-eating snails significantly boosted corals' resilience to bleaching, with only 50% of corals experiencing bleaching when snails were removed. In contrast, corals with high snail densities experienced near 100% bleaching.
University of Queensland researchers recommend diverse, ambitious and area-specific conservation targets to support critical services that nature provides. The current 17% target is insufficient to protect all species and provide benefits to humanity.
University of Alberta biologists developed a new imaging technology to study plant diversity and evolutionary history using light spectroscopy. The method allows for quick assessment of biodiversity changes over large landscapes, providing a practical tool for addressing ecosystem function and climate change.
The Arizona Cancer and Evolution Center at ASU will use interdisciplinary approaches to understand cancer, leveraging evolutionary and ecological models to develop new treatments and management strategies. The center aims to advance fundamental understanding of cancer through innovative research efforts.
A new study reveals that thermal physiological differences allowed Greater Antillean anoles to occupy different microclimates, facilitating species coexistence. The research found that species diverged in thermal tolerance and sprint performance, with warmer environment species having higher maximum temperatures and optimal temperatures.
Researchers are rethinking microbial ecology, arguing that niche is more important than names. Microbes have many ways to get energy, and co-exist in redundant systems. The study's findings have major implications for interpreting changes in microbial communities, predicting health, and understanding environmental perturbations.
Brown bears may fall into evolutionary and ecological traps due to poor decision-making on environmental cues, leading to declines in population. The article proposes mechanisms by which these traps can affect brown bear dynamics and viability in human-modified landscapes.
A Rutgers study found that striped maples change sex periodically, prompted by physical damage, and can wait up to three weeks before flowering. The research suggests that the trees' ability to delay reproduction may be an adaptation to their perilous environment.
A study by University of Lincoln researchers discovered that conflict between sexes within a species can lead to one sex adapting to different resources, effectively preventing other species from colonizing habitats. This challenges traditional theories on natural selection's role in driving biodiversity evolution.
Researchers at Colorado State University explore how climate change impacts the evolution of organisms and propose a novel approach to understanding eco-evolutionary feedback dynamics. The study suggests that evolutionary changes in response to climate change may accelerate or mediate the warming trend.
A new study on turtle brain evolution reveals that their brains have changed slowly and constantly over 210 million years, with modern turtles showing a wide variety of brain shapes and sizes. The first turtles with fully formed shells were likely living on land, contradicting previous hypotheses about their origins.
New Caledonian crows manufacture hooked stick tools to outsmart hidden food, extracting it 2-10 times faster with improved efficiency. The study reveals that even small tool design changes can significantly boost foraging performance.
A study published in Nature Ecology & Evolution found that all organisms are nearly equally fit for survival due to a universal tradeoff in energy allocation. This means that each species contributes the same amount of energy per gram of parent to the next generation, regardless of size or life history.
Scientists at the University of Oregon have isolated blood-feeding and non-biting genes in mosquitoes, a breakthrough that could lead to female mosquitoes that no longer bite and spread diseases. The goal is to identify universal non-biting genes across multiple disease vectors.
Research finds that male redback spiders benefit from mating with immature females, which appears to have no cost to female reproductive output or survival. This early mating may be advantageous for females, as delays in mating can lead to shorter lifespans and reduced offspring success.
Scientists have identified a new species of orangutan, the Tapanuli orangutan, with only around 800 individuals remaining due to habitat loss and hunting. The discovery highlights the urgent need for conservation efforts to protect this critically endangered species.
A recent genetic study found that men's ability to father children later in life has no link to their longevity, and women's survival past 50 is not favoured by evolution. The research suggests that genes beneficial for both early and late life are the key to understanding why people live beyond 50.
Stanford researchers found that managed soil can trap more carbon dioxide than previously estimated, potentially offsetting future emissions. Improving land management practices like reduced tillage and perennial crops could increase soil's carbon storage.
A recent Oregon study with zebrafish found that transmitted microbes lead to similar gut microbiomes, selecting for particular microbes that are good at moving from fish to fish. This suggests the movement of microbes may drive microbiome variation and could impact human health.
A Spanish research team found that urban house sparrows suffer from more stress due to toxic effects of air pollution and unhealthy diets compared to their country counterparts. This could have health implications for people living in cities.
Researchers found that whitefish DNA in lake sediment dates back 10,000 years to Stora Lögdasjön, while Lake Hotagen was only colonized 2,200 years ago. This discovery provides insights into the spread of fish species and how they responded to climate change.
Researchers have solved the mystery of the geographic origins of American oaks by finding that red and white oaks diverged simultaneously from a single species 45 million years ago. This common ancestor gave rise to two distinct lineages, which then radiated into different ecological spaces across North America.
A recent study explores how infectious hematopoietic necrosis virus (IHNV) spreads among juvenile hatchery-raised fish in the Pacific Northwest. Modeling reveals that returning adults and within-hatchery juvenile-to-juvenile transmission are efficient pathways of IHNV spread.
A team of researchers found a 176% increase in aboveground biomass within the 3-hectare area studied, with the orange peels enriching the soil's nutrients and promoting tree growth. The study demonstrates the unique power of agricultural waste to regenerate forests and sequester carbon at no cost.
A study published in Nature Ecology & Evolution found that the protein GDF11 plays a crucial role in determining the position of the hindlimb in tetrapods. The researchers discovered that species-specific hindlimb positioning is linked to changes in the timing or rate of GDF11 expression during embryonic development.
Researchers at the California Academy of Sciences used genetic information gathered from their vast mammal collection to elevate a subspecies of giant sengi to full species status. The team discovered that a white-tailed subspecies was genetically distinct enough to be recognized as a separate species.
A new study reveals that certain microorganisms in symbiotic relationships are constantly being replaced and discarded by their hosts. The researchers found that the genome of these microorganisms undergoes significant changes, losing genes over time and ceasing to be useful to the host.