Articles tagged with Invasive Species
A University of Washington study reveals that invasive marine snails react differently to threat signals compared to native snails. Native snails use multiple sources of information before fleeing or hiding, while invasive snails respond impulsively and hide at the first whiff of danger.
A new mathematical model describes ecological invasions as a random walk, categorizing randomness into spatial, demographic, and temporal factors. The model replicates key properties observed in computer simulations, resolving an ongoing argument between ecologists and mathematicians.
Researchers from OU, BU, and Smithsonian found that Arctic ground squirrels arrived on Chirikof Island at least 2,000 years ago, contradicting previous assumptions. The study's results have implications for conservation efforts in the region, highlighting the need for long-term data to determine native and indigenous species.
Researchers found that invasive species on Hawaii Island are successful invaders due to their scavenging abilities, which create a nutrient resource for other invasive scavengers. Invertebrates and vertebrates consumed 55% and 10% more carcasses than invertebrates alone, respectively.
Research highlights how humans impact the evolution of other species, leading to rapid changes in a few years to decades. Examples include commercial fishing, invasive species, and urbanization, which drive evolutionary adaptations.
New research prioritizes preventing feral cat extinctions, testing management tools, and improving coexistence with native fauna. Guardian animals and grooming traps are among the proposed tools for effective feral cat management.
The discovery of the Moku virus highlights a new threat to bees worldwide, particularly honey bees that pollinate vital crops. The novel pathogen has the potential to spread globally and cause widespread harm to honey bee colonies.
Research from York University finds that climate change is exacerbating the decline of walleye populations in Ontario lakes due to the invasion of competitive smallmouth bass. The study predicts a significant increase in co-occurrence of the two species by 2070, posing a major threat to walleye survival.
Researchers found that killer shrimps drove native amphipods out of hiding places, making them easy prey for round gobies. The invasive crustaceans played an indirect role in the decline of native species.
In Botswana, scientists have successfully controlled invasive aquatic weeds like salvinia, water lettuce, and water hyacinth through biocontrol and legislation. The country's efforts have improved water resource use, wildlife conservation, and tourism, contributing 25% to GDP.
A new study reveals that controlling invasive mammal populations can prevent as much as 75 percent of predicted island-level extinctions for globally threatened vertebrates. The research identifies specific islands where conservation efforts will have the greatest impact, providing valuable guidance for conservation interventions.
Rapid evolution enables plants to disperse more efficiently in disrupted environments, spreading up to three times farther than non-evolving counterparts. In patchy landscapes, evolving populations exhibit greater heights, facilitating seed dispersal.
A new study published in Science reveals that only 5% of global biodiversity datasets meet the 'gold standard' required for effective conservation. The lack of reliable and accessible data threatens our ability to understand and address key threats to biodiversity, such as invasive species, logging, and illegal wildlife trade.
Global research collaborations study harlequin ladybird's invasion history and ecology, highlighting its ability to thrive in various habitats. Citizen science projects provide valuable information on the spread of invasive alien species, inspiring new approaches to surveying and monitoring.
A new study reveals that invasive species in the Great Lakes have a much greater economic and ecological impact than previously thought. Researchers found that a single non-native species can rack up millions of dollars in damages, highlighting the need to recalculate the cost of invasive species.
A global study found that invasive mammal eradications on islands result in substantial conservation gains, benefiting 596 native species populations. The research demonstrates the effectiveness of this simple and cost-effective conservation intervention.
A new study reveals that grey squirrels may not be as hardy as thought and were helped more by humans in their conquest of the British Isles. The research shows that different populations are genetically distinct, tracing human intervention in their movement to new areas.
Researchers predict the spread of non-native regal damselfish in southern Gulf of Mexico, threatening local ecosystems. The tiny fish's reproductive strategies and oceanic water flow patterns are key factors in its potential impact.
A €320,000 partnership will help control, prevent and eradicate invasive species across Europe, threatening native plants and animals at a cost of €12 billion annually. The project aims to develop evidence-based approaches to predict and prevent incursions by invasive species.
Researchers have discovered a genetic mutation in West Australian starlings that has led to a significant increase in population within five years. The study found the mutation was beneficial to the birds and provided a potential mechanism for understanding how mitochondrial DNA mutations affect individuals and populations.
A century-old mystery surrounding an invasive ant species has been solved, with scientists finding it originated from Asia. The study used genetic analysis and distribution maps to confirm the correct answer.
The study highlights the main pathways of alien species introduction in European lakes and rivers, including escape from aquaculture facilities and pet/aquarium trade releases. It emphasizes the need for stricter regulation and control measures to mitigate these threats and achieve the Aichi Biodiversity Target 9.
A new report by Plymouth University finds that ocean acidification is benefiting invasive species such as algae and jellyfish, which can cause toxic blooms and harm native herbivores. As CO2 levels rise, these organisms are becoming more resilient and spreading to new areas.
Researchers found that predators benefit from eating invasive prey only when their traditional diet remains intact. Native prey is necessary for predators to stay healthy and prosper. Invasive species may provide a supplemental food source, but they don't replace native prey, which is essential for predator survival.
A team of researchers from Kobe University has developed a novel method to quantify the proportion of native and non-native genotypes in aquatic species. By analyzing environmental DNA (eDNA) from water samples, they were able to detect the presence of invasive non-native strains in rivers and reservoirs of western Japan.
A comprehensive analysis found that time since introduction is the most useful measurement in predicting non-native species' global ranges. The study highlights the importance of careful vigilance at sites receiving high numbers of potential invasive species delivery vectors.
The New Guinea flatworm has been found in Florida, marking a significant threat to the US mainland's ecosystem. The invasive species can spread through human agency and infested plants, posing a risk to native snails and other terrestrial molluscs.
A new study confirms that humans are causing a rapid pace of species loss, with extinction rates up to 100 times faster than normal, threatening ecosystem services and human survival. The researchers warn that inaction will lead to irreversible damage, but call for urgent conservation efforts to avoid a sixth mass extinction event.
Genomics holds key to understanding ecological and evolutionary processes as Next-Generation Sequencing (NGS) technique is underutilised in invasion biology. NGS can transform our understanding of why non-native species adapt and thrive in new environments.
Researchers warn that genetically modified salmonids may outcompete wild-type fish due to enhanced feeding motivation. However, increased aggression could expose them to greater predation risk, reducing their overall fitness.
A new study reveals that monk parakeets invading Europe and North America share similar genetic patterns, indicating they originated from the same small area in Uruguay. The invasive populations have lower genetic diversity compared to native populations, which is unusual for species with successful invasions.
Researchers at University of Waterloo developed a new statistical tool, nicheROVER, to analyze multiple ecological niche parameters and identify overlap between species. This allows for more informed predictions about the impact of invasive species on native ecosystems.
A new study reveals that invasive species like Asian carp use landmarking to find mates by congregating at easily identifiable locations. This strategy allows them to reproduce even when population densities are low, posing a significant threat to conservation efforts.
Researchers found that hurricane-altered ocean currents accelerate the invasion of non-native marine species, such as lionfish, by 45% and increase population size by 15%. This study has broader implications for global climate change and the spread of marine invasives.
Researchers traced tropical fire ant origins to Acapulco, Mexico, and mapped their invasion history using genetic diversity analysis. The ants were transported on ships going between the Americas and Asia, establishing a new distribution in virtually all tropical regions.
Robert McMahon, a renowned expert on aquatic invasive mollusks, has been awarded the Lifetime Achievement Award by the National Invasive Species Council. He is recognized for his decades-long work in preventing and managing invasive species, including zebra mussels, Asian clams, and apple snails.
A new study finds that climate change may tip the scales in favor of invasive wetland plants, which can outcompete native species due to their natural phenotypic plasticity. As environmental changes occur, invasive species will gain an advantage over native species, potentially reducing biodiversity and ecosystem function.
A study by Oregon State University and Simon Fraser University found that small fish with long bodies are most likely to be attacked by lionfish, which can increase their chances of being eaten by up to 200 times. The research also identified common traits among prey species that make them vulnerable to predation.
Researchers documented the rapid evolution of native Florida lizards, shifting their perching habits and adapting their feet to better grip thinner branches. Within 15 years and 20 generations, their toe pads became larger with more sticky scales, allowing them to outcompete the invasive species.
A new study reveals that harlequin ladybird, an invasive alien species, prefers urban areas and sunnier habitats. The invasive species has outcompeted native ladybirds due to habitat deterioration and competition.
Invasive Antarctic crabs could degrade marine ecosystems by preying on local species, experts warn. Long-term monitoring programs are needed to assess the extent of the problem.
The Mediterranean is invaded by over 1,000 alien species, including fish and algae, threatening native biodiversity. Invasive species disrupt delicate balances in ecosystems, causing devastating effects on animal species.
A new study from Dartmouth College suggests that climate warming can affect the success of invasive species in different ways. The research found that warmer temperatures can favor non-native crustacean zooplankton by increasing their growth rate and making them less vulnerable to predators.
A comprehensive online resource has been developed to assist in the identification of 194 potentially invasive species from around the world. The new tool, built by the USDA and California Department of Food and Agriculture, includes diagnostic characters, distribution, hosts, and important references for each species.
Research suggests that wildlife corridors can facilitate the spread of invasive species, such as one type of fire ant, by creating connected habitats. The study found that polygyne fire ants, which are poorly dispersing, benefited from corridors, increasing their abundance and negatively impacting native ant diversity.
Researchers found that Kellet's whelk hosts living beyond their historic Point Conception boundary have neither the amount nor diversity of parasites as those in southern counterparts. This suggests that the northern whelks may have escaped their parasites due to low host densities and limited parasite transmission.
Israeli scientists developed a method to generate single-sex populations of prawns using gene silencing technology. This can boost commercial farm productivity and control invasive species. Non-reproducing prawns could also be used as sustainable bio-control agents against diseases and pests.
The pygmy shrew population in Ireland is under threat from the rapid expansion of the greater white-toothed shrew species. The invasive species has spread across the landscape at a rate of over five kilometers per year, leading to concerns that it may displace the native pygmy shrews and even lead to their local extinction.
A new study published in Science examines the conflict between invasive species removal and endangered species recovery. Researchers at UC Davis recommend slowing down invasive species eradication to allow restoration or natural recovery of habitats.
The opening of new Arctic shipping routes poses significant risks to the north Atlantic and north Pacific coasts from invasive species. Scientists warn that unchecked commercial shipping could drastically alter the exchange of invasive species across the region.
The study found that climate change has accelerated the spread of hybridization between native westslope cutthroat trout and introduced rainbow trout in North America. Hybridization has contributed to the decline and extinction of many native fish species, including all subspecies of cutthroat trout.
Scientific collections provide wealth of information on species' diet, breeding habits, growth rates, lifespan, and ecology. Collections have played crucial role in understanding climate change impacts and disease tracking, with discoveries like de-extinction of the Vegas Valley leopard frog.
The cattle egret's colonization of Brazil offers insights into non-native species dispersal and adaptation. The bird's ability to establish itself in the Americas without human introduction highlights its adaptability and potential ecological impacts.
A study found that anglers and canoeists are key pathways for invasive species introduction into UK waterways. The research highlights the importance of 'Check, Clean, Dry' practices to prevent further spread. By following these simple steps, water users can help protect native ecosystems.
The New Guinea flatworm, considered one of the 100 worst invasive alien species, has been found in France for the first time. The flatworm was identified by molecular analysis and is capable of consuming European snails and other soil-dwelling species.
A recent study found that Burmese pythons present a low risk to people in Everglades National Park, with all reported incidents involving biologists being minor and non-fatal. The study suggests that pythons may abort strikes upon realizing the size of their potential prey, indicating they can assess size mid-strike.
A new study confirms that reducing lionfish numbers by 75-95% can allow rapid recovery of native fish biomass and aid larger ecosystem recovery. Native species such as Nassau grouper and yellowtail snapper increased by 50-70% on reefs where lionfish were kept below threshold densities.
Researchers at Duke University tested a theory on bacterial dispersal patterns using E. coli, finding that spreading out to multiple habitats simultaneously can be beneficial but also increases the risk of population collapse due to the Allee effect. This study has implications for managing invasive species and understanding the impact...
Researchers found that alien harlequin ladybirds are less likely to be parasitized by common wasps and flies than native UK species. The study supports the Enemy Release Hypothesis, suggesting that native predators and parasites may struggle to attack invasive species.
A new model suggests that characteristics like phenotype and interaction mechanisms are key to understanding the chances of an invasive species succeeding. The study challenges Darwin's original theory on naturalization conundrum, indicating that ecological relationships alone are a weak predictor of invader success.