Articles tagged with Invasive Animals
A new synthesis paper examines how ecological structures and processes help ecosystems withstand disturbances while providing benefits. The study highlights the importance of 'portfolio effects' in maintaining ecosystem resilience.
A team of biologists led by the University of Massachusetts Amherst has discovered reproducing populations of the invasive Manila clam in Cape Cod and Boston Harbor. The finding marks a significant moment in the establishment of this non-native species, which is now spreading along the northwestern Atlantic coastline.
Researchers found that Ohio wall lizards' rapid population growth and adaptation to their new environment, with similar climate and habitat, contributed to their success. The study suggests that ecology plays a more significant role in the lizards' invasion than genetic factors initially thought.
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 documents the rapid expansion of the Indo-Pacific crab Gonioinfradens giardi in the Ionian Sea, indicating a shift from sporadic occurrence to stable populations. The species' establishment raises concerns about its ecological role and interactions with native species.
Researchers found that smooth barriers higher than 50cm can be toad-proof through design changes or upgrades during routine maintenance. This method could protect ecosystem services supporting pasture health and prevent millions of offspring from spreading across the landscape.
A new study reveals that invasive pollinators in Chile are fundamentally reshaping native plant-pollinator networks, leading to a 'silent takeover'. The research found that non-native bees like the buff-tailed bumblebee account for more than 70% of recorded interactions, displacing native species and altering ecosystems.
Researchers have discovered that native rice stink bugs have more genetic diversity than invasive species, which could help monitor the spread of insecticide resistance. This study provides valuable insights into pest management for Arkansas rice growers, who face significant costs due to the bug's impact on their crops.
The giant Asian mantis has been formally recognized as an invasive alien species in Europe, posing a significant threat to native biodiversity. The species' high reproductive potential and predatory behavior are causing declines in native populations and altering ecosystems.
A recent study found that chikungunya can spread in temperatures as low as 13 degrees Celsius, posing a greater health threat in Europe than previously thought. The Asian tiger mosquito is expanding northwards through the continent, and warming temperatures may lead to local outbreaks in the UK.
Urbanization may be shaping the spotted lanternfly's spread into new environments by allowing them to adapt to heat, pollution, and pesticides. The insects' genetic diversity is lower in the US compared to China, but they are still adapting to local climate conditions.
A global study reveals invasive alien species reduce terrestrial insect abundance by 31% and species richness by 21%. Insects are often overlooked victims of invasion, exacerbating population declines and ecosystem disruption.
Aedes aegypti and Aedes albopictus mosquitoes have been detected in the UK, posing a public health risk due to their role as vectors of diseases such as dengue and chikungunya. The detection highlights the importance of ongoing surveillance to reduce the risk of mosquito-borne diseases.
A new study reveals that Indo-Pacific fish species are being carried into the Mediterranean Sea through the Suez Canal and sea currents. Cargo shipping is now identified as a key driver of these invasions, with targeted management needed at major shipping hubs.
A University of Toronto study finds that global warming may increase the risk of invasive ant species by enabling them to expand into outdoor environments. Researchers warn that some indoor-only ant species have the potential to cause significant damage if they become established outdoors.
Researchers analyzed 96 years of forest census data, revealing homogenization trends and loss of tree species. The study suggests that reduced forest diversity makes the ecosystem less resilient to future disturbances.
A 26-year study found that removing feral animals like cats and foxes from a reserve sparked an ecological transformation, favoring the growth of smaller rodents like Bolam's mouse and spinifex hopping mouse. Larger species like plains mouse and stripe-faced dunnart also surged in population after five to nine years.
A study suggests that eliminating invasive rats can restore the flow of nutrients across food chain networks in Seychelles, potentially enhancing ecosystem function on coral reefs. Seabird populations play a mediating role in this process by increasing turf algae growth and stimulating top-down controls.
The latest watchlist identifies 145 non-native animals and plants that could impact biodiversity, ecosystems, human health, and economies in Britain. The top 20 threats include invasive salmon, clams, seaweed, and species like the yellow-legged hornet, raccoon, and Emerald ash borer.
Researchers at Washington State University discovered that juvenile European green crabs can cause significant damage to shellfish, native eelgrass, and the ecosystem. The study found that even young crabs can crack into immature shellfish with ease, challenging current removal techniques.
Researchers found that invasive brown widow spiders effectively defend their egg sacs against wasp parasites through multiple defence strategies. By constructing denser spikes on their egg sacs and using guarding behaviors, the spiders protect themselves against high levels of predation and parasitism.
A study by Swansea University reveals that native and invasive small mammals are sharing their gut microbes as habitats change, highlighting the importance of microbiome similarity in adaptation to new environments. This finding has implications for understanding the impact of urbanization on wildlife health and disease spread.
The European Catfish has a prolonged breeding season of almost five months, allowing its offspring to survive extreme events and compete for food resources effectively. This finding is crucial for controlling the species' population, as removing larger individuals can help reduce fecundity.
Researchers analyzed data from python contractors to identify regions and conditions that increase python removals, providing guidelines for targeted surveys. The study found optimal conditions, including time, temperature, and survey duration, leading to improved efficiency in python detection and removal efforts.
Two new European projects, GuardIAS and OneSTOP, aim to tackle the threat of invasive alien species on endangered species, natural sites, and human health. The projects will use advanced scientific research, cutting-edge technology, and artificial intelligence to develop new tools for detection, prevention, and eradication.
Researchers warn of environmental risks posed by snakes and insects in imported ornamental plants, calling for improved regulations and sustainable practices. The study highlights the difficulty of monitoring and controlling pests due to high-volume trade, posing a threat to ecosystems and human health.
Researchers warn of the risks of spreading invasive species via untreated water transfers, which can move between different environments. The study highlights the need for coordinated surveillance and management plans to tackle this threat and conserve freshwater biodiversity.
Researchers have found that Burmese pythons can swallow deer and other large prey whole, with a gape circumference of over 81 centimeters. This increased capacity could lead to a significant impact on native wildlife populations in Florida and potentially beyond.
A new method, conditioned taste aversion, has been trialled to protect freshwater crocodiles from deadly invasive cane toads. The trial was successful in reducing crocodile death rates by up to 95% in areas where cane toads were present.
A study found that invasive cicad aulacaspis scale alters leaf litter decomposition dynamics of cycad species, releasing nutrients too quickly. This damage threatens ecosystem balance and conservation efforts in invaded islands.
A team of international experts emphasizes the need for collaboration across borders and within countries to address the growing threat of invasive alien species. The paper, published in Nature, Ecology & Evolution, highlights the critical evaluation of existing knowledge on invasive alien species and their control.
Research shows that invasive Asian honeybee population in North Queensland has overcome a genetic bottleneck to grow into a thriving colony. The study highlights the importance of this case for understanding population resilience and provides insights into how some species can adapt quickly despite low genetic diversity.
Researchers found that Aedes aegypti mosquitoes' thermal tolerance and biological traits can shift in response to temperature, leading to variation in disease transmission. This study challenges traditional models by highlighting the importance of local adaptation in predicting mosquito-borne disease risk under climate change.
The study reveals that non-native earthworms have colonized 97% of soils across North America, with alien occupation higher in the northern part of the continent. This poses a threat to native ecosystems, including forests and grasslands, and highlights the need for better understanding and management of these invaders.
Chinese researchers investigated the causes and consequences of biological invasions, tackling questions on genetics, nutrient pollution, and online trade. The 24 articles highlight valuable insights into future biological invasion research coming out of China.
A new study reveals that bumblebees can effectively fend off Asian hornets by dropping to the ground, a strategy that has not been observed in other pollinators. However, despite this successful defense mechanism, bumblebee colonies still experience reduced growth rates in areas with high numbers of Asian hornets.
A study found that Japanese beetles are likely to thrive in southeastern Washington and could spread throughout the region from Yakima to the Tri-Cities and north past Moses Lake. The beetles' potential dispersion is influenced by factors such as human activity and suitable habitat.
The study found Asian clams in various habitats along the lower Columbia River, with high concentrations near warmer waters and sandy substrates. The invasive species can disrupt food webs and cause economic damage, raising concerns about potential future invasions by quagga and zebra mussels.
A new biodiversity study shows that even seemingly healthy ecosystems with increasing species numbers may already be on the path to decline and loss of species. The study's findings suggest that species richness is not a reliable metric for monitoring ecosystems, as it can mask negative trends in species extinction.
A new study from the University of Georgia found that Joro spiders, despite their intimidating appearance, are gentle giants, mean no harm to people or pets. They remain immobile for over an hour after a disturbance, unlike other spider species that resume normal activities within a minute and a half.
A worldwide decline in insect populations is attributed to land-use intensification, climate change, and the spread of invasive animal species. The consequences of this trend include a loss of biodiversity, reduced pollination services, and increased risk to food sources for animals.
Researchers at UToledo developed a new model to estimate the abundance of rare species like invasive grass carp in freshwater ecosystems. The model helps guide management strategies and provides insight into the effectiveness of control efforts.
A new study suggests that the invasive rusty crayfish may be dying off naturally, allowing native water plants and snails to flourish. In some Northern Wisconsin lakes, crayfish populations have declined by nearly zero, leading to a resurgence of plant life and potential ecosystem recovery.
A new review highlights the lack of understanding about non-game native transplant (NGNT) fish in the US, which can have significant impacts on ecosystems. Researchers urge anglers and aquarium hobbyists to take steps to prevent NGNT invasions, such as not releasing bait fish into different watersheds.
Invasive alien species threaten EU biodiversity, causing harm to wildlife, crops, and human health. The new awareness campaign urges people to 'Beware of Aliens' and report sightings to prevent their spread.
A recent study analyzed volunteer motivations in invasive species projects and found that motivations fit three broad themes: environmental concerns, social motivations, and personal reasons. Volunteers are driven to protect native biodiversity in their valued areas, such as Scottish seabird islands and South African Fynbos.
A new study predicts that over the next 30 years, 1.4 million US street trees will be killed by invasive insects, mainly caused by the emerald ash borer. The estimated economic cost of replacing these trees is over $900M. Researchers warn that urban tree diversity is crucial to resilience against pest infestations.
New research suggests Joro spiders could colonize the entire East Coast of the US due to their ability to withstand cold temperatures. The spiders' fast metabolism and high heart rate also contribute to their potential spread.
A review of invasive alien species reporting apps for citizen science identified key features and areas for improvement. The study emphasizes the importance of user-friendly apps with gamification, AI-powered photo identification, and coordination among developers to enhance public participation and data management.
A study analyzing Wikipedia searches found no significant increase in attention towards invasive alien mammals after the publication of a blacklist in Europe. However, temporary peaks in searches were observed following sensational news and viral videos about specific species. The research suggests that blacklists may not be an effecti...
A new study found that human-caused bird extinctions lead to the loss of ecological roles, including pollination and seed dispersal. Introduced alien species do not fill these gaps, highlighting the disproportionate impact of human actions on biodiversity.
Researchers found that rusty crayfish exhibit increased diet specialization and boldness in mid-abundance lakes, where individual behaviors become more diverse. This specialization can lead to impacts on spawning fish populations and ecosystem dynamics.
A study by the University of Helsinki found raccoon dogs to be a significant threat to ground-nesting bird populations in Northern Europe. The invasive species was found to destroy nests and prey on farmed mallard eggs, contributing to the decline of waterbird populations.
A new analysis reveals that deliberate or accidental introductions of invasive species have cost Australia AUD$389.59 billion over the last 60 years. The most costly individual species was feral cats, while the management of invasive plants proved to be the worst offender, costing US$151.68 billion.
Researchers found that less than 10% of protected areas are home to invasive species, but almost all are at risk due to nearby human activity and lack of monitoring. The study highlights the need for increased efforts to monitor and record invasive alien species in protected areas.
New research highlights the urgent need to protect national parks from invasive animal species, which can cause loss of wildlife, decrease visitor enjoyment, introduce diseases, and have significant economic impacts. The National Park Service has taken steps to combat this issue, but more action is needed.