Articles tagged with Hunting
A study published in the Journal of Experimental Marine Biology and Ecology found that exposure to oleamide, a chemical additive in plastics, caused immediate changes in octopus prey choice and interactions with predators. The effects persisted for at least three days, suggesting a lasting impact on marine behavior and ecosystem dynamics.
Research reveals that hunting pressure is shrinking safe space for mandrills in Equatorial Guinea's Monte Alén National Park. Mandrills are adapting to changing conditions by focusing on high-quality sites with limited human impact.
A new neural network developed by Naveen Dhar can filter out false positives in gunshot detectors, providing accurate alerts for on-the-ground intervention. The system uses a web of autonomous recording units and a central hub to analyze audio data and pinpoint the location of gunshots.
A new study suggests that Indigenous Australians may have been fossil collectors, rather than hunters, of Australia's megafauna. The researchers re-analyzed a fossilized tibia bone with an incision and found that it was likely already fossilized when the cut occurred.
A new study by Florida Atlantic University reveals that every arm is capable of performing all action types, with front arms mainly used for exploration and back arms supporting movement. Octopuses demonstrated remarkable flexibility, showcasing complex motor control.
Researchers compared prey-capture behaviors in five fish species, revealing distinct strategies that differ from zebrafish. These differences suggest species-specific sensory inputs and motor control, shedding light on how brain circuits support behavior and evolution shapes those circuits.
A voluntary pledge made by UK shooting organisations in 2020 to replace lead shot with non-toxic alternatives has failed, analysis by Cambridge researchers reveals. The team found that lead shot was not being phased out quickly enough to achieve a complete voluntary transition by 2025.
Expanding wild-harvested meat donation programs could provide a sustainable source of healthy protein to those in need while mitigating ecosystem damage. Such programs already have a substantial impact, with 48 US programs providing over 10 million meals annually.
Researchers created a model to predict extinction likelihood based on human hunting and environmental pressures. The model accounted for interactions between humans, animals, and their environment, considering factors like climate change and life history traits.
Researchers found that individuals who engaged in home and wild food production (HWFP) activities exhibited improved food security 9-12 months later. Those who were newly food insecure during the pandemic seemed to be the best at recovering from food insecurity with HWFP.
Fishing cats were observed raiding bird nests in tall trees for the first time, providing a rare and unusual behavior that sheds light on their ecology. This unexpected finding may help piece together the ecology of these elusive felines and contribute to conservation efforts.
A new study reveals that northern and southern resident orcas differ in their hunting behaviors, with males catching more salmon per hour than females. Southern resident males outperform females by 152%, highlighting a distinct pattern of foraging that may contribute to the population decline.
A modelling study published in Scientific Reports found that raising the minimum age threshold for trophy hunted male lions to eight years could increase hunting sustainability. This approach limits the impact of poaching and conflict with livestock owners on lion populations.
Researchers measured rhino horns from photographs taken between 1886 and 2018, finding a significant decrease in length across all five species. The decline is believed to be caused by intensive hunting, which has also led to a shift in human perceptions of rhinos from hunting to conservation.
Research reveals that wildlife hunting motivations differ across Africa and Europe, shifting from economic to socio-cultural and recreational factors as socio-economic conditions increase. Hunting intensity is surprisingly constant, while densely populated areas experience increased conflict-related killings.
A team of researchers from Kyoto University and Cameroon used camera trap surveys to predict the total biomass of large rodents and duikers in southeast Cameroon. They developed six candidate indicators, including the ratio of red duikers to blue duikers, which showed positive linear correlations with total bushmeat biomass.
Researchers observed Swainson's Hawks hunting a dense colony of Mexican Free-tailed Bats using cameras to reconstruct 3D flight trajectories. The study found that hawks steer towards a fixed point within the swarm instead of targeting individual bats, suggesting a new mechanism for efficient prey capture.
A study has found that pheasant meat can contain small fragments of toxic lead, which can be absorbed by the body and cause long-term harm. Researchers detected up to 10mg of tiny lead shards per pheasant, widely distributed within the bird's tissues.
Researchers at Linköping University developed a new analysis model to estimate the number of wild animals harvested through hunting in Sweden. The model provides a better estimation of wild animal populations and reduces uncertainty, making it easier to track changes in ecosystems.
Researchers observed blue crabs digging shallow pits that fill with water and waiting for prey to come to them. The attacks were successful 33% of the time, making it an efficient hunting strategy.
Researchers found that specific vocalizations, known as the 'hunting bark', recruit more group members to hunt and capture prey more effectively. Chimpanzees have been observed joining hunts after hearing these barks, increasing success rates.
The new species, Meraxes gigas, has disproportional short arms like T. rex and evolved independently to have such characteristics. The team proposes that the short arms may have supported reproductive behavior or helped with movement, offering a unique survival advantage.
A new study reveals that population declines have been greatest among species that migrate to areas with more human infrastructure, habitat degradation, and climate change. The research identified 16 human-induced threats to migratory birds, including infrastructure associated with bird disturbance and collisions.
A new study finds that Florida panthers are the primary cause of white-tailed deer mortality in Southwest Florida, with 96 deer killed by the big cats. Habitat changes and population shifts pose challenges for sustainable hunting opportunities, highlighting the need for further research.
Researchers found that extinct species had smaller brains than surviving ones, suggesting a link between brain size and adaptability. The study suggests that larger brains helped extant species cope with human activities and climate change.
Researchers found that early European farmers were on average 1.5 inches shorter than their pre-agricultural counterparts. Heights steadily increased through the Copper, Bronze, and Iron ages, with some parts of Europe experiencing a height loss. The study suggests that environmental factors contributed to the decrease in heights.
A new study reveals that the giant camel Camelus knoblochi lived in Mongolia with anatomically modern humans until climate change led to its extinction. The species likely competed with its critically endangered relative, the Bactrian camel, for resources.
A new study from the University of Copenhagen suggests that the poison from the sea snail species Conus rolani can function as a painkiller, blocking out pain in mice for an even longer time than morphine. This discovery offers a potential alternative to addictive painkillers like morphine and opioids.
A recent Cornell University study reveals that white-tailed deer can shed and transmit the COVID-19 virus for up to five days following infection. The virus replicates in the deer's respiratory tract, lymphoid tissues, and central nervous system, making them a potential reservoir for the virus in nature.
A study has found that lead poisoning from gun ammunition has suppressed the populations of birds of prey across Europe, resulting in a loss of around 55,000 adult birds. The impact is particularly significant for species like eagles and Red Kites, which are long-lived and breed later in life.
Researchers found that voles in Inner Mongolia, China, trim tall grasses when shrikes are nearby, decreasing predation risk. The voles' behavior is an example of ecosystem engineering, where they modify their environment to improve survival.
The discovery of Hanyusuchus sinensis, an extinct crocodilian species, sheds light on the evolution of modern crocodilians and their role in ancient ecosystems. Human migration and hunting led to its extinction, which may have influenced ancient Chinese myths and characters.
Regulated hunting can reduce population density, allowing fewer animals to compete for resources during harsh winter conditions. This approach can stabilize population fluctuations and buffer the impacts of extreme climatic events on species with limited food resources.
A new study suggests that implementing primary pandemic prevention actions, such as better surveillance and wildlife management, can reduce the economic costs of emerging infectious diseases by up to 10%. These actions have a substantial co-benefit of preventing carbon dioxide emissions and conserving water supplies.
Killer whales have been observed hunting and killing blue whales, with three documented events in Australian waters. The attacks were coordinated and resulted in the whale's flesh being stripped off, highlighting the apex predator's influence on marine environments.
A study published in PLOS ONE suggests that changing climate conditions 23,000 years ago expanded food options for humans in Israel's Sea of Galilee region. The research analyzed animal remains at the submerged archaeological site of Ohalo II, revealing a diverse diet with multiple prey sources.
A groundbreaking study reveals early humans preferred to hunt the largest available animals to provide the greatest quantities of food. Over 1.5 million years, humans repeatedly overhunted large animals to extinction, and then shifted to smaller animals, improving their hunting technologies.
A study by the University of Exeter found that older male elephants help keep younger, more aggressive males calm by policing their behavior. Without these older bulls, adolescent elephants become more fearful and aggressive towards non-elephant targets, posing a threat to humans.
Research found mixed effects of hunting regulations on sage grouse populations, with some areas experiencing increased growth rates after discontinuing harvest. State wildlife agencies have adjusted hunting seasons to conserve the species, but more work is needed to understand patterns and focus conservation efforts.
A new study found that consuming sustainably sourced wild meat instead of domesticated livestock reduces greenhouse gas emissions and retains precious tropical forest systems. This can lead to significant financial incentives for forest conservation through carbon credit revenues, totaling millions of dollars per year.
A new study by the University of Exeter reveals that domestic cats rely almost entirely on their owner-provided food for nutrition. Despite being prolific hunters, cats only consume a small percentage of the prey they catch.
A new study by the ICTA-UAB establishes that populations of hunter-gatherer groups with strong seasonal dependence on meat had fewer people per square kilometer than those relying on abundant plant foods. This result is based on a complex set of calculations showing how diet composition influenced population density.
The Iñupiaq people's seal hunting season has shrunk by about one day per year over the past 17 years due to sea ice decline. This reduction in flexibility affects hunters' ability to prepare and hunt, as they now have less time to adapt to changing conditions.
A recent study by Tel Aviv University and the Weizmann Institute found that humans are responsible for the extinction of about 10%-20% of all avian species over the past 20,000-50,000 years. The majority of extinct species were large, flightless, and lived on islands.
A new study estimates that Wisconsin's wolf population declined between 27-33% between April 2020 and April 2021, with a majority of additional deaths attributed to cryptic poaching. The researchers estimate the current wolf population is between 695-751, which may represent the maximum due to optimistic assumptions about growth.
A new UC Riverside study reveals geckos can still capture crickets with 77% accuracy even after losing their tails. The researchers found that geckos were slower and less agile without tails, but retained a surprising retention of accuracy in capturing prey.
Researchers observed porpoises taking on six different roles during group hunts, including a distant gatherer and shepherd, which led to successful captures of fish. This collaborative hunt is more sophisticated than previously thought, with individual animals sharing information and coordinating their actions.
A study found 39 incidents of seized porcupines in Indonesia from 2013 to 2020, highlighting the country's lack of controls on hunting and trade. The researchers recommend categorizing all porcupine species as protected under Indonesian wildlife laws.
Researchers found that hunting dog breeds show clear links between owner personality and dog-stress levels, while ancient breeds are less affected. The study suggests breeding for collaboration with humans influences stress synchronization in herding dogs.
A nationwide survey found a diverse group of college students interested in trying hunting, unlike current active hunters. The study identified key motivators, such as getting ethically sourced meat and ecological conservation, to attract new hunters.
The Pyrenean Ibex's decline was driven by a combination of hunting and infectious diseases, which further reduced its already low genetic diversity. The species' eventual extinction highlights the importance of historical biological collections for genetic analyses of extinct species.
Researchers at Tel Aviv University reconstructed the nutrition of stone age humans, finding they were specialized carnivores with a high-fat diet. The study used multiple lines of evidence, including genetics, metabolism, and archaeology, to conclude that humans evolved as apex predators for two million years.
A study by researchers at Penn State found that juvenile white-tailed deer dispersal does not result in added mortality. Contrary to expectations, survival rates of dispersers were comparable to those of non-dispersers, with only two female deer killed by vehicular collision during their movement.
Wild greater mouse-eared bats use extremely weak prey echoes that are like whispers to humans, allowing them to focus on their next meal. The bats control the strength of their returning echoes by calling louder or weaker, using this strategy to simplify their information and process.
Scientists reviewed over 1,000 studies on recreational hunting, finding both environmental and social benefits, as well as detrimental effects. The research highlights the need for more analysis to understand how recreational hunting can work for good and in which areas it can be detrimental.
Domestic cats hunt less when owners feed them high-meat-content food and engage in play mimicking hunting. This reduces predation by 25%, with a 36% decrease seen in prey animals brought home to cat owners.
A new study found that introducing premium commercial food with high protein content from meat reduced the number of prey animals brought home by 36%, while five to ten minutes of daily play resulted in a 25% reduction. These non-invasive methods offer a solution for reducing hunting without restricting cat access.
A new study reveals that wolves have evolved specific ambushing tactics to catch and kill beavers by exploiting their poor eyesight and well-developed sense of smell. Researchers found that 89-94% of ambushing sites were downwind, allowing wolves to remain undetected.
Researchers found that women's involvement with dogs strengthened the human-dog bond, leading to increased personhood and utility. Hunting cultures also showed a stronger connection between humans and dogs.
In a groundbreaking discovery, scientists have found electric eels working together to herd small fish into tightly packed balls. The eels then launch simultaneous electric attacks, stunning the prey into submission.