Articles tagged with Evolutionary Ecology
Conservation biologists at the University of Exeter found that attaching green LED lights to gillnets reduced sea turtle deaths by 64%, without affecting fish catch, in a small-scale Peruvian fishery. The study showed that the cost of saving one turtle was £24, making it a cost-effective solution.
The study highlights the importance of time context in diet reconstructions, which can lead to conflicting results. By considering different time scales for dietary proxies, scientists can gain a more accurate understanding of an animal's eating habits.
Researchers at The University of Texas at Arlington found that stable environments like constant predator threats induce trans-generational responses in offspring. Water fleas from populations experiencing intense predation developed faster to enhance survival rates in future generations.
Researchers from Princeton University will present on the intersection of citizen science and technology, exploring its potential to tackle environmental challenges. Additionally, they will discuss the complexities of measles control in resource-poor settings, highlighting the need for targeted interventions and statistical analysis.
A study led by USGS research ecologist Jim Grace found that communities rich in species are substantially healthier and more productive than those depleted of species. Biodiversity is crucial for stable ecosystems and human society, the researchers say.
Researchers found genetic changes in threespine stickleback that occurred in less than 50 years, suggesting rapid adaptation to freshwater environments. The study uses genomic technology developed at the University of Oregon and provides insights into the impact of sudden environmental change on organisms.
A new study from the University of Exeter found that people can learn to make effective tools through reasoning and reverse engineering, not just through teaching. This discovery challenges established views on how human tools and technologies improve over time, pointing to humans' unique ability to adapt and innovate.
A new study published in Proceedings of the Royal Society B found that cooperative bird behavior can reduce oxidative stress and cell damage during the breeding season. In groups with shared workload, birds showed stronger antioxidants and lower free radical damage compared to those with heavy breeding workloads.
A team of scientists discovered a new evolutionary mechanism in Manduca sexta moths, where a single amino acid change in an enzyme switches the production of pheromone precursors from mono- to tri-unsaturated compounds. This change is responsible for the evolution of new insect species and divergent pheromone communication.
Researchers found that edible gifts given by male crickets to their female partners during mating contain unique proteins that could affect the females' behavior. The proteins in the nuptial gift may promote cell growth and development in target tissue, influencing female reproductive behavior.
Researchers develop framework to measure cheating in mutually beneficial relationships, finding evidence scarce. The study aims to stimulate mechanistic studies and improve understanding of human interactions by recognizing that not all bad partners are necessarily cheaters.
A UT Arlington biologist is conducting a comprehensive study of zooplankton in over 20 lakes in Alaska and Wisconsin to better understand the relationship between ecological changes and evolutionary responses. The research aims to predict how organisms adapt to natural and human-induced environmental shifts.
A new general consumer-resource model spans centuries of food web models, capturing underlying structure and providing a framework for new models. This concept has far-reaching implications for fields like resource management, conservation, and agriculture.
Researchers developed software to analyze colors and patterns as animals see them, useful for studying animal and plant signaling, camouflage, and predation. The software converts digital photos to animal vision, providing a user-friendly solution for scientists.
Researchers discovered that mongoose cooperativeness lasts a lifetime, with consistent individuals helping offspring care and those with selfish personalities not increasing their workload. The study found varying personality types among mongooses, which remain unknown.
Mammals underwent rapid 'burst' of evolutionary change in the mid-Jurassic, producing characteristic body shapes that remained recognisable for tens of millions of years. This period of radical change produced up to 8 significant changes per million years, compared to 1-2 at the end of the Jurassic.
A new approach developed by scientists from the China National Genebank (CNGB), BGI-Shenzhen demonstrates the value of mitochondrial genome databases in detecting wild bees in UK farms. The method uses mitogenome references to analyze 'bee soup' DNA, providing a more accurate and efficient way to track population trajectories.
Researchers found that mice exposed to cat urine early in life can't avoid it later due to positive reinforcement and hormone changes. The molecule L-Felinine is responsible for this effect, blocking pregnancy and reducing litter size.
Researchers found that 18% of wild banded mongoose pups are fathered by males from rival packs, reducing the risk of inbreeding. Female mongooses take risks to mate with rivals during pack 'warfare', while males discriminate between relatives and non-relatives.
A new study by University of Exeter and Tokyo University of the Arts found that songs from around the world share features like strong rhythm to enable coordination and group bonding. The researchers analysed 304 recordings of diverse music, revealing dozens of statistical universals related to pitch, rhythm, and social context.
A new study from the University of Exeter found that sexually antagonistic genes can maintain genetic variation in insect populations, including resistance to pesticides. This discovery has significant implications for pest management and our understanding of evolutionary dynamics.
A new study found that cat owners are unaware of the number of animals killed by their pets and resist control measures. Despite this, many owners agree to neutering as a method of improving cat welfare.
Researchers used DNA barcoding to study Antarctic sponge diversity and revealed a highly diverse group of species, comparable to tropical communities. The genetic analysis suggests that these sponges developed as an isolated population, likely descended from ancestral forms in Gondwana waters.
A months-long literature search uncovered evidence that a microscopic aquatic parasite, Blastulidium paedophthorum, is a widespread and virulent multi-host parasite in southeastern Michigan lakes. The research found that the parasite significantly impacts host fecundity without reducing Daphnia lifespan.
A new study by University of Michigan graduate research fellow Micaela Martinez-Bakker reveals that silent transmission of poliovirus could continue for more than three years with no reported cases. To ensure eradication, aggressive surveillance programs and vaccination campaigns must continue in endemic countries.
A study led by Catarina Ferreira reveals that peer reviews in scientific research are subjective and variable in quality. The researcher proposes alternatives to improve the system, including standardizing review criteria, guidelines, and recognition of reviewers.
Researchers found that male and female banded mongooses discriminate between relatives and non-relatives to avoid inbreeding, with males directing mating effort towards less closely related females. The study suggests a previously unknown breeding system where both sexes avoid inbreeding when mating within their extended family group.
A recent study from the University of Exeter has discovered Gabon's coastline to host the largest breeding colony of olive ridley turtles in the Atlantic. The research reveals an estimated 9,800 turtle nests per year, highlighting the importance of continued conservation efforts for this vulnerable species.
A study published in Functional Ecology found that late-rising songbirds are more susceptible to being cuckolded, meaning they raise offspring fathered by other males. This suggests a potential role for sexual selection in shaping circadian traits in wild vertebrates.
A new study published in Behavioural Ecology found that elderly crickets' behavior becomes more entrenched with age, making them less responsive to changing environmental conditions. This suggests that older individuals may struggle to adapt to changes in climate, habitat, or diet, potentially affecting their survival prospects.
A new study analyzing over 460 conifer species found that the ancient pollination mechanism is gradually disappearing, leading to a loss of buoyant saccate pollen and droplet emission. Instead, species evolved new traits or lost existing ones, demonstrating 'stasis and release' in plant evolution.
Invasive species can spread rapidly due to rapid evolution, contradicting previous predictions. This accelerated invasion rate is crucial for understanding ecological and socio-economic impacts of invasive species.
Researchers found that exposure to a common growth-promoting hormone affects the sexual behaviors of fish, altering male reproductive behavior in guppy fish. This has significant implications for individual populations and species, with potential devastating long-term evolutionary and ecological impacts.
Researchers found that 17beta-trenbolone alters male reproductive behavior in guppy fish, influencing mating success and potentially devastating long-term impacts. The study demonstrates the capacity of agricultural contaminants to disrupt mating systems in wild populations.
New research reveals that cichlid fish courtship rituals evolve rapidly in response to feeding depth. Castle-building males live at shallower depths, while pit-digging males thrive at greater depths, driven by differences in eye structure and display behavior.
Historians re-examined the concept of ecological succession and found that forensic examiners recognized its predictability in carrion-arthropod succession by the late 1800s. This discovery predates plant ecology's widely cited examples from the early 1900s, highlighting multiple independent discovery.
A new study on echinoids shows that evolutionary rates were lowest at the group's onset and increased over time through bursts associated with changes in feeding strategies. This challenges traditional views of evolution, suggesting a more complex history for many clades.
Researchers found that European wild rabbits construct smaller, more densely packed burrows in urban areas than in rural settings. This suggests that cities provide a more suitable habitat for these animals, leading to concerns about their potential impact on rural populations and the preservation of the species.
A UCLA study finds that regulating body temperature is a crucial factor in zebra striping, controlling zebras' body temperature and protecting them from diseases carried by biting flies. The research provides the first evidence of thermoregulation as the main reason for stripes and patterns.
Researchers analyzed data from over 7,500 species of insect herbivores and found that most species specialize on a single type of plant, contradicting the assumption that generalist feeders are more common. This study has important implications for ecosystem management and conservation efforts.
Recent research on early hominid diets highlights the limitations of using modern technologies alone to understand their eating habits. A holistic approach is needed, considering factors such as habitat, anatomy, and cognitive abilities. This interdisciplinary method can provide a more accurate picture of our ancestors' diets.
Whole-organism performance capacities are subject to life-history trade-offs with other key determinants of fitness. This approach offers significant promise for understanding ecology and evolution of performance traits.
Researchers developed game-theoretical model to examine different incentive schemes, finding rewarding cooperative agents first leads to higher cooperation levels. The optimal strategy shifts to punishing wrongdoers after a sufficiently large proportion of agents cooperate, promoting highest level of cooperation at lowest cost.
A team of 100 researchers, led by Rutgers biologist Dr. Jessica Ware, has completed a groundbreaking two-year project to map the evolution of insects using molecular data. The study found that insects originated around 480 million years ago, contemporaneous with the earliest terrestrial plants, and developed wings before other animals.
Researchers mapped red fox ancestry across 1,000 individuals worldwide, revealing the species evolved into a new distinct species in North America after 400,000 years. The study suggests climate change and environmental shifts impacted global distribution.
A recent study supports Charles Darwin's insight that regions with deeper evolutionary histories are more likely to produce successful invaders. The 'Evolutionary Imbalance Hypothesis' (EIH) suggests that ecologists should consider historical evolutionary imbalance when analyzing invasiveness.
A group of researchers recommend applying evolutionary biology to combat modern threats, proposing gene therapies, drought-resistant crop varieties, and conservation strategies to protect land with high genetic diversity. This approach can help develop more robust solutions to societal problems and promote sustainable development.
The US National Science Foundation, NIH, and USDA have awarded over $12 million in new research grants to study the ecological and biological mechanisms behind human-induced environmental changes and infectious diseases. Researchers will investigate topics such as landscape structure on disease dynamics and host vaccinations' impact on...
A new study explores how biodiversity is developed and maintained, challenging a long-held theory on ecological niches. Researchers found that species can co-exist by reacting differently to resource fluctuations, but this mechanism may not be evolutionarily stable.
Research shows that warmer temperatures have led to narrower diets among butterflies moving north in response to climate change, potentially compromising their ability to adapt. In contrast, butterflies with more diverse diets may struggle to evolve new eating habits to cope with changing conditions.
A $440,000 grant-funded global project aims to protect remaining old-growth forests and promote sustainable reforestation through a multidisciplinary approach. Researchers from 14 countries will work together to understand factors leading to forest regrowth and provide tangible recommendations for policymakers.
Researchers urge caution when exploring/exploring the deepest parts of our oceans, highlighting the need for a 'happy balance' between use and environmental costs. The deep ocean is already experiencing impacts from human activities such as fishing, oil and gas development, and waste disposal.
A study found that birds underwent rapid body size changes to exploit new ecological niches, while other dinosaur lineages stagnated. The team estimated the body mass of 426 species using leg bone thickness, revealing a prolonged period of high evolutionary rates in the lineage leading to birds.
A study found that dinosaurs showed rapid rates of body size evolution in early forms, but these slowed down over time. However, the evolutionary line leading to birds continued to change size at this rate for 170 million years, producing new ecological diversity not seen in other dinosaurs.
Researchers explore how fluctuating sea levels impacted the Galapagos Islands' ecology over thousands of years. The study reveals that shallow 'land bridges' between volcanic outcroppings allowed landlocked species like snakes, geckos, and iguanas to thrive.
Jiang and DeAngelis' theoretical paper explores how species modify their environment to gain benefits, affecting community diversity. Their work is likely to foster further research and generate hypotheses for experimental studies.
Research by UCSB professor Hillary Young finds that large wildlife decline leads to an increase in rodent populations, resulting in more fleas and a higher risk of human disease. The study's findings highlight the importance of protecting large and at-risk wildlife species to mitigate this risk.
Researchers found that some polar bears in the western Hudson Bay population are using flexible foraging strategies, such as prey-switching and eating plants and animals. This behavior may help them survive in a rapidly changing environment where sea ice is melting earlier and freezing later.
A Syracuse University biologist has developed a system to track ships and monitor underwater noise levels in a protected marine mammal habitat. The techniques focus on the bottlenose dolphin population in Scotland's Moray Firth, where increasing shipping activity may negatively impact resident marine mammals.
The new journal will cover a range of topics in ecology and evolution, including agroecology, behavioral and evolutionary ecology, and phylogenetics. It will be an interdisciplinary platform for researchers to share their findings, with open access publishing and fast publication.