Articles tagged with Predators
A new study from PLOS Biology shows that reintroduced gray wolves in Yellowstone Park provide a crucial safety net for scavengers during climate change. Wolf kills temper the devastating effects of climate-related carrion shortages on scavengers.
Research from University of Bristol provides strongest evidence that disruptive patterns protect insects from birds, a predator that shaped evolution of protective coloration. By varying colors, size, and location of patterns on artificial moths, the team identified effective combinations that mimicked tree characteristics.
Researchers discovered that gliding ants, like Cephalotes atratus, can land on tree trunks and climb back up, with 85% success rate. The ants' ability to change direction mid-air is still a mystery, but it's likely due to their unique morphology, including flattened hind legs and head flanges.
A new study published in the Royal Society journal found that managing GM herbicide tolerant sugar beet crops can increase yields while reducing herbicide use. The research also shows that single glyphosate applications can enhance weed seed production, benefiting wildlife.
Researchers found that warming swordfishes' eyes allows them to process visual information faster than cooled eyes, giving them a significant edge over prey. By heating their eyes, swordfishes retain the ability to spot quickly moving objects, enabling successful hunts in cold water.
Researchers explore links between chronic stress in birds, depleted medieval fish stocks, and the costs of extended lifespan. Studies reveal how food and predators impact physiology and demography in songbirds and propose a norm for inseparable effects on both.
Researchers studied social implications of winner and loser effects in green swordtail fish, nocturnal colour vision in geckos, and bird distress calls. They also examined queen and worker policing in wasps and developed a model to minimize the impact of exotic infections.
Scientists have discovered a new species of sea reptile, Dinocephalosaurus orientalis, from the Guanling Formation in southeast China. The creature had a long-necked body, measuring over five feet, with relatively stiff neck and short limbs, suggesting it was adapted for life in the water.
Researchers discovered a significant increase in arm regeneration frequency among fossil crinoids during the Middle Paleozoic Marine Revolution, coinciding with the diversification of predators and prey adaptations. The findings suggest that broken arms may be collateral damage, rather than direct targets of predation.
Researchers developed a mathematical model that accurately reproduces gypsy moth population outbreaks, combining host-pathogen and predator dynamics. The model resolves the irregular timing of outbreaks and accounts for spatial synchrony, paving the way for applications to other forest insects and small mammals.
Commercial fishing methods are causing significant damage to Fijian coral reefs. The study highlights the importance of sustainable fishing practices to protect these critical ecosystems.
A recent study reveals a drastic decline in species diversity and productivity of an ecosystem, with significant consequences for the environment. The research highlights the need for conservation efforts to mitigate these effects and preserve biodiversity.
A new study found that subsistence fishing has disastrous consequences for coral reefs, causing healthy corals to die and being rapidly replaced by algae. Even low levels of fishing can bring about profound ecosystem changes, including the growth of crown-of-thorns starfish populations.
Researchers recorded mantis shrimp's club-shaped front leg striking prey at peak speeds of 23 meters per second, generating forces over 100 times the shrimp's body weight. The unique saddle-shaped structure acts as a spring, storing energy until release propels the strike.
Researchers used advanced technology to study Weddell seals' hunting habits and physiological adaptations. They discovered that these extreme athletes can survive for hours by catching and eating prey, providing insights into conservation efforts.
Research by Ostfeld and Holt found that mobile predators like foxes, coyotes, and falcons effectively suppress rodent numbers, reducing disease transmission to humans. In contrast, specialized predators like weasels cause periodic population booms, promoting the spread of rodent-borne pathogens.
A team of scientists has tracked over 1,000 bluefin tunas and over 200 bluefin tuna in the Pacific Ocean using electronic tags. The data reveal extensive migrations of these fish across entire ocean basins.
Researchers discover green leafy volatiles (GLV) prime corn plant defenses to respond more strongly against subsequent herbivorous insect attacks. The primed plants produce chemical signals that attract natural parasites and predators, increasing crop protection.
A study published in Conservation Biology found that non-lethal repellent methods, such as motion-activated devices with strobe lights and random noises, were effective in keeping predators away from deer carcasses. The methods outperformed traditional deterrents like electronic training collars.
Cardiff University scientists have developed a new method to identify the prey spiders eat by analyzing their stomach contents using DNA. This technique shows that money spiders prefer certain species of springtails, which could lead to better control of aphids and boost spider populations.
A study found that gray squirrels are essential for germination of black walnut trees due to their scatter hoarding behavior, while red squirrels' larder hoarding practice hinders seed dispersal. The researchers suggest changing land-use practices to maintain healthy forest connectivity.
Researchers find that movement-activated guards deter predators from feeding by up to two-thirds, offering a non-lethal alternative to lethal control methods. The study suggests promoting coexistence between humans and large carnivores through real-world problem-solving.
New research suggests that predators play a crucial role in driving the four-year population cycle of collared lemmings in eastern Greenland. The study found that generalist predators like foxes, owls, and skuas synchronize their numbers with those of lemmings, while specialist predators like stoats lag behind.
The San Clemente loggerhead shrike's federal recovery program has hindered the species' co-existence with island foxes. Researchers propose shifting funds from predator control to habitat restoration to support both species. This approach may enable species co-existence, benefiting conservation efforts.
Researchers found that coral reef declines followed the same pattern globally, starting with large predators and herbivores, followed by smaller animals and finally sea grasses. The study provides a yardstick for conservation efforts, offering hope for restoring ecosystems with strong management decisions.
In a laboratory experiment using rotifers and algae in chemostats, rapid evolution allowed prey to adapt and outnumber their predators. This phenomenon, predicted by computer models, demonstrates how evolution can play a crucial role in ecological dynamics and could have implications for understanding diseases like HIV.
A recent study by Wildlife Conservation Society researchers found that the reintroduction of wolves and grizzly bears in Yellowstone has led to ecosystem dysfunction. Female moose showed little reaction to predator sounds and smells, indicating a lack of ecological recovery.
Researchers found that three-dimensional spider webs reduce predation by mud-dauber wasps, allowing spiders to thrive in safer environments. This escape from predation is accompanied by a significant increase in spider species diversity and abundance.
A new study by Oregon State University researchers found that removing any one species from a marine food web can have devastating effects, leading to population collapse and regional extinction. The study's findings highlight the importance of preserving biodiversity in marine ecosystems.
A new study by Scripps scientists reveals that intermediate-sized predators can have significant impacts on ecosystems, contrary to previous conclusions. The research highlights the importance of considering all species, not just larger ones, for maintaining ecosystem stability and biodiversity.
A study published in Estuarine, Coastal, and Shelf Science found that restored salt marshes provide similar energy resources to undisturbed sites. The research team compared the diets of mummichog fish in both habitats and found no significant differences.
A study using virtual blue jays as predators found that they drove the evolution of diverse wing markings in a population of virtual moths. The research, funded by the NSF, used a genetic algorithm to favor moths with more cryptic markings and found evidence of increased diversity after 100 generations.
After severe droughts, wading bird populations surge due to changes in fish populations and nutrient cycles, according to University of Florida researchers. This phenomenon, known as 'pulsed productivity,' occurs worldwide among diverse wading bird species.
Research reveals that Northwestern crows primarily monitor their surroundings for opportunities to steal food, rather than detecting predators. The birds use complex strategies to obtain food, including targeting invertebrates and smaller prey.
A recent study by Tsou and Collie found that predation is a dominant source of mortality in the Georges Bank fish community. The most important predators are cod, silver hake, sharks, and rays, which have replaced groundfish as the dominant fish eaters in more recent years.
A recent study suggests that predators play a key role in maintaining a balanced ecosystem. The research, conducted on small islands with no natural predators, found that the absence of top-down regulation led to an explosion in plant-eating animals and herbivores, resulting in a collapse of vegetation.
A recent study by Texas A&M University researchers found that environmental conditions such as drought, water quality, and predator presence impact crayfish populations. The findings highlight the importance of understanding the ecological relationships between organisms and their environments to predict stream health.
A unique study on lizard populations reveals that the presence of a top predator can make prey populations more vulnerable to catastrophic events. The researchers found that on islands without predators, mice populations rebounded quickly after a natural disaster, whereas those with predators struggled to recover and some became extinct.
Autonomous agents improved performance by communicating via message board, outperforming previous studies and human-programmed strategies
The tortoise beetle uses its own feces to create a shield that deters most predators, but one predator, the carabid beetle, can penetrate it. The larvae attach fecal strands to their bodies and repair them if damaged, creating an almost impenetrable defense mechanism.
A new University of Delaware theory explains how good insect moms fiercely protect their young by fanning their wings and charging predators when all hopes are on a single batch of eggs. The semelparous insects, which lay a single clutch, defend their only genetic legacy to the death.
Paleontologists have unearthed the first complete fossil of a gorgonopsid, a fearsome reptilian-mammalian creature that roamed Earth 250 million years ago. The discovery provides valuable insights into the gorgon's torso and limbs, resolving a long-standing debate about its anatomy.
A new study found that forest fragmentation allows large predators like raccoons and opossums to target ground-nesting songbirds, leading to a decline in some species. The researchers discovered that small forest fragments have a higher incidence of predation from large species, which can lead to dramatic effects on reproductive success.
Researchers discovered that the millipede Polyxenus fasciculatus uses its rear to confront ants and other attackers, employing a complex defense mechanism involving detachable bristles with barbed hooks. The bristle tufts can entangle predators, making it difficult for them to escape.