Articles tagged with Wild Populations
A global analysis of zoo records shows a 21-44% increase in life expectancy for African and Asian elephants since 1960, mirroring improvements in their wild counterparts. These gains are attributed to advancements in management standards, veterinary care, and socialisation strategies.
A recent study found that protecting primates in China's Yunnan province can also protect other animals and plants, highlighting the importance of umbrella species conservation. The research showed that large-bodied vertebrates need vast areas to support populations, which are habitats for many other species.
A study found that mountain lion visits to a small preserve led to changes in deer activity, vegetation growth, and the presence of smaller predators like coyotes and foxes. This 'ecology of fear' demonstrates the ripple effects of apex predators on ecosystems.
A new study from Cornell University found that farmed eastern oysters are adding to and breeding with wild eastern oyster populations in the western and central Long Island Sound. This genetic evidence suggests that oyster farms may provide a demographic supplement to dwindling populations, potentially benefiting ecosystem services.
The Laboratory in Northern Kenya (LiNK) improves conservation-led veterinary medicine by providing accessible diagnostic infrastructure. The lab, established through a collaborative partnership, serves the northern Kenya landscape and enhances the country's national wildlife health infrastructure.
Researchers found that pregnant Pacific pocket mice trained to fear snakes produce more vigilant offspring, which survive better in the wild. This method of antipredator training may improve conservation breeding and reintroduction programs.
A study by Newcastle University reveals the Cheviot goats in Northumberland's College Valley are a historically significant and genetically distinct population. The research highlights the potential importance of native and feral livestock breeds as animal genetic resources for future agriculture.
A long-term study found that invasive Burmese pythons led to a dramatic decline in woodrat populations, while cotton mouse populations surged following Hurricane Irma's landfall. The study highlights the disproportionate impact of invasive predators on endemic ecosystem engineers and underscores the need for targeted conservation efforts.
A new study found that certain snake species, like pygmy rattlesnakes, are at risk for serious illness and death due to multiple pathogens. Snakes can carry pathogens without showing symptoms, but co-infections increase disease prevalence.
A year-long study of NYC's East River used environmental DNA to reveal insights into urban wildlife activity, human food consumption and ecosystem health. The findings suggest that urban waterways can become continuous biosensors tracking biodiversity and habitat restoration outcomes.
A recent study found that antibiotic-resistant bacteria are present in the gut microbiomes of American black bears in eastern North Carolina. The researchers also discovered that these pathogens can be dispersed through bear feces, making the bears a potential indicator species for environmental changes.
Researchers at Salk Institute discovered that naked mole rats can transition to peaceful queen succession, demonstrating flexibility in their social order. This finding challenges previous understanding of colony dynamics and opens new avenues for studying eusocial mammals.
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 48 urban coyotes and found that over half of their dens were in natural structures, while others incorporated human-related items to create strong, hidden shelters. The study highlights the adaptability and intelligence of coyotes, which play a crucial role in urban ecosystems as apex predators and ecosystem engineers.
Researchers found that six species exhibited little to no evidence of phylosymbiosis, while five closely related bovids showed patterns consistent with the concept. Drier environments may reveal phylosymbiosis due to reduced microbial diversity.
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.
McGill researchers found that freshwater browning is stunting some fish species' growth, shrinking others' populations, and altering fish communities. This phenomenon has broad impacts on biodiversity, affecting economically important fish species such as northern pike and walleye.
A study found that a global pandemic is quietly wiping out sea urchins around the world, with populations nearing local extinction in the Canary Islands. The 2022-2023 mass mortality event affected the entire population of the species across the archipelago, causing a 74% decrease in La Palma and a 99.7% decrease in Tenerife.
A new study reveals that four wild cat species in Guatemala's Maya Biosphere Reserve coexist without competitive exclusion by hunting in different vertical zones. Pumas primarily consume tree-dwelling prey, while jaguars and ocelots focus on ground-dwelling prey.
Researchers found that rats contributed significantly to Rapa Nui's deforestation by consuming palm nuts, preventing trees from regrowing. The islanders cleared land for agriculture and used slash-and-burn practices, but the slow-growing palm trees made them vulnerable to rat predation.
A study by researchers at UCLA and UC Davis found that climate change leads to more reported clashes with wildlife during droughts. The study analyzed data from the California Department of Fish and Wildlife's Wildlife Incident Reporting database and found a 2-3% increase in conflicts for every inch of decreased annual rainfall.
Research reveals West Coast transient killer whales are two distinct subpopulations, differing in diet, hunting grounds and social behavior. The inner coast transients are expert navigators of nearshore inlets, while the outer coast whales thrive in deep canyons and rugged underwater terrain.
A study of nine large mammal species in the Greater Yellowstone Ecosystem found that their behavioral responses to summer heat were influenced more by environmental structure than biological traits. Populations living in homogeneous environments altered their behavior more dramatically, seeking shade and cooler conditions.
A new study reveals that polar bears act as crucial providers for Arctic species, leaving behind millions of kilograms of prey annually. This carrion provides a vital energy source for a wide network of arctic scavenger species, including Arctic foxes and ravens.
A new peer-reviewed analysis challenges the 2025 study on Yellowstone's wolves, finding claims of a 'world-leading' trophic cascade are unsupported. The re-analysis highlights circular reasoning and modeling assumptions violations, suggesting a more modest response to predator recovery.
Researchers analyzed feces samples from 11 herbivore species in Namibia's Etosha National Park to understand how environmental factors shape their gut microbiomes. The study found five types of bacteria serving as environmental indicators, which could help monitor ecosystem changes and animal adaptation.
A University of Maryland-led study found that wild canids create and stick to specific travel routes within their territories, while felids tend to roam more freely. The research challenges traditional assumptions about animal movement and has implications for conservation and management of at-risk mammalian carnivores globally.
A study by Bielefeld University reveals that common wall lizards behave far more socially in urban areas, maintaining multiple contacts and developing stronger bonds due to the city environment's structure.
A new study analyzing the dietary choices of wild woodrats reveals that individual diets may not be as diverse as previously assumed. The research suggests that the costs of specializing on one food source or diversifying one's diet have a strong impact on an animal's ability to survive and thrive.
Researchers discovered a large population of critically endangered Plains-wanderers in South Australia's arid interior, defying their previously believed habitat preference. The birds were found to select low-growing shrublands with specific composition over dense native grasslands.
Researchers predict significant declines in Arctic reindeer populations, with potential losses of up to 80% by 2100, due to climate change. This could have far-reaching ecological implications and exacerbate climatic warming.
A long-term study in southeastern Madagascar found that protected forest fragments improve the survival of endangered mouse lemurs. The study suggests that habitat protection is critical for conserving this species.
A study from the University of Georgia found that lions and hyenas tend to stay near roads with less tourist traffic, particularly during the dry season. The animals often visit waterholes for drinking or hunting, but hyenas may avoid areas with high competition from lions.
A new study reveals how US national parks influence wildlife behavior, with some species avoiding humans while others adapt to developement, affecting ecological dynamics and conservation efforts.
A study of 25 years of behavioral observations found that gorillas' aggression is shaped by their individual needs and social environment. Pregnant and lactating females directed more aggression towards more powerful group members, while females with more males in the group targeted less powerful opponents.
New UGA research reveals wild pigs are a significant cause of damage on farms and crops, with estimated losses of $107,000 per year. The invasive species' high birth rate and ability to uproot seeds and trample plants make them a destructive force in Georgia agriculture.
A study by University of Göttingen researchers found that mixed deciduous-conifer forests promote coexistence between red squirrels and dormice. The team observed both species living side by side in these forests, suggesting a potential role for mixed forest management in supporting biodiversity.
New research reveals evolutionary reversal in island plants where wild-growing tomatoes on western islands produce alkaloids similar to those found in eggplants. The study suggests that environmental conditions may be driving the reversal, and this phenomenon could have implications for human evolution and nature's ability to adapt.
Researchers at the University of Florida have developed a method to analyze airborne DNA, tracking species and pathogens in the air. This technology has vast potential applications for studying wildlife, human health, and environmental monitoring.
A new study by researchers at the University of California, Davis, suggests that non-native milkweeds in urban gardens are not harmful to migratory monarch butterflies. The study found that resident monarchs and non-native milkweeds are not connected to the larger population, allowing urban ecosystems to contribute to their conservation.
Researchers at GEOMAR identify that EU fisheries management's reliance on national interests and ICES advice leads to overfishing, resulting in the collapse of many fish stocks. A new approach is proposed to set quotas independently of national interests and prioritize sustainable catches.
A study from the University of Georgia found that a combination of environmental, climatic, and cultural factors drive human-lion conflict in Namibia. The study suggests that areas with less vegetation are more prone to fatalities due to lions being able to hide better from humans.
A study published in the Journal of Medical Entomology found a gene mutation in bed bugs that may contribute to their resistance to insecticides. The researchers, led by Warren Booth, discovered the mutation in 134 unique populations of bed bugs collected from North America between 2008-22.
Researchers found that common urban pollinator plants like white clover and bindweed accumulate toxic metals from contaminated soils, posing a risk to bee health. To mitigate this, scientists recommend testing soil for metals before planting wildflowers and choosing plant species suitable for the local conditions.
Researchers identified three hotspots of hantavirus circulation in wildlife, including Virginia, Colorado, and Texas. The study found 15 rodent species as carriers, including six new hosts, and explored the impact of climate change on transmission.
A study from Lund University found that migrating freshwater roach have larger pupils and better eyesight than non-migrating individuals. This adaptation enables them to detect small food sources in low-light conditions, crucial for survival during migration.
Researchers from North Carolina State University found that red meat is the most effective bait for detecting weasels, with salmon oil adding to its allure. The study aimed to address the lack of standardized monitoring protocols for weasel populations and provides a framework for future surveys.
Larvae of wood frogs grow and mature precociously when infected with ranavirus, exhibiting accelerated growth and development. This may help tadpoles tolerate the energetic demands of infection or escape risky environments to avoid infection entirely.
A recent study found that intense east coast low storms and marine heatwaves caused the deaths of over 200 weedy seadragons on Sydney beaches. The extreme weather triggered record-breaking waves and rainfall, which seadragons struggle to handle.
European wolf populations have seen a remarkable 58% growth over the past decade, with at least 21,500 individuals now roaming the continent. This recovery is attributed to conservation efforts and policies supporting large carnivore populations.
A study published in Ecological Applications found that a diversity of corolla sizes in urban flower communities positively impacts wild bee biodiversity. Researchers from Concordia University collected data from 16 sites around Montreal and identified 94 different species of bees and almost 150 different species of flowers.
Researchers found that birds of similar age tend to have more similar repertoires, while mixed-age neighbourhoods exhibit higher cultural diversity. The pace of song turnover is driven by individuals coming and going, with older birds serving as 'cultural repositories' of older song types.
A new study published in Science tallies butterfly data from over 76,000 surveys across the US, revealing a 22% decline in total butterfly abundance between 2000 and 2020. This alarming rate affects 554 species, with 107 experiencing population losses of more than half.
A new study combines satellite collar data with specialized cameras to shed light on the mysterious and important stage of maternal denning. The researchers found that using both methods can accurately predict when polar bears will emerge from their dens and how external factors like temperature influence their behavior.
Research reveals that gene flow from Antarctica enhances the genetic diversity and adaptive potential of Australasian killer whale populations. This influx of genetic material helps reduce inbreeding and boosts population health, increasing their ability to adapt to environmental changes. The study provides rare evidence of mechanisms ...
A new MSU-led study found that translocation successfully bolstered population numbers, but failed to prevent genetic erosion and inbreeding in Florida Scrub-Jays. The researchers analyzed decades' worth of data and sequencing the entire genomes of 87 jays, identifying reproductive skew as a limiting factor.
Researchers used advanced molecular tools to survey health status of endangered Indiana bats, identifying microbiome changes resulting from parasitic infections. The analysis revealed that bats with high loads of a protozoan parasite had a corresponding proliferation of certain bacteria.
A new species of manzanita has been discovered on the central coast of California, but its survival is already at risk due to urban development. The species, Arctostaphylos nipumu, lacks a protective burl that allows some other manzanitas to resprout after wildfires.
A Danish study found that rural cat owners are increasingly managing their cats similarly to urban owners, leading to fewer unwanted kittens. The change reflects a growing human attachment to owned cats and a diminishing divide between rural and urban life.
Research by Montana State University ecologist Diane Debinski found that eastern monarch butterflies are delaying their fall migration, staying in the field for nine days longer than they did in 2003. This delay was linked to a similar shift in the timing of milkweed blooming, which could have implications for population dynamics and v...