Articles tagged with Invasive Species
Researchers genotyped Aedes aegypti mosquitoes in California and found two distinct introductions and populations. The northern population is genetically diverse and likely arose from a separate introduction.
A research team has secured funding to develop the first early detection system to locate invasive non-native species and harmful components of ships' ballast water. The system combines surveillance and risk-based monitoring to mitigate threats to human health and the environment.
A new DNA tracking tool allows scientists to catalog invasive and native species in water bodies using environmental DNA. The tool, which uses polymerase chain reaction technology, can collect fish habitat data without capturing fish.
Researchers found that half of ships passing through Israel's Mediterranean coast carry damaging ascidians, which can harm marine biodiversity and ecosystem services. Dr. Noa Shenkar recommends regular maintenance to prevent ascidian infestations and emphasizes the importance of monitoring marine vessels for early detection.
A new study found that ice-free areas in Antarctica could increase by up to 25% by the end of this century, potentially creating new habitat for biodiversity. However, the warming climate may also facilitate invasive species to establish themselves.
A new continuous-discrete hybrid population model describes the invasive dynamics of zebra mussels in North American rivers. The model shows that population persistence is contingent upon moderate water temperatures and low flow velocities, and that upstream invasion success depends on these factors.
Scientists at Kyoto University discovered that yellow crazy ant workers produce two types of egg: reproductive and nutritional. The latter variety is fed to larvae and also used as a supplement for queens and other castes.
Invasive fiber-like red seaweeds have covered up to 90 percent of some areas, changing the ocean floor landscape. The new habitat supports two to three times more small creatures at the base of the food chain.
A new invasive Asian clam species has been discovered in the Illinois River near Marseilles, Illinois. The researchers used genetic tests to confirm its uniqueness, raising concerns about the impact on native clams and the ecosystem as a whole.
Children from island locations in the Bahamas prefer invasive species like feral cats and pigs, while mainland children prefer mammals. Island children also show a greater preference for native species, highlighting the need to consider human factors in conservation decisions.
A new study finds that invasive fruit fly males of the wrong species can coerce females into sex, reducing their offspring production and willingness to mate with their own kind. Native species are threatened by these unwelcome romantic advances, which contribute to their decline.
Cornell University's College of Veterinary Medicine is partnering with New York schools to monitor invasive aquatic species in state waters. The program utilizes genetic tests and citizen scientist teams to detect early signs of invasion, educating students about the importance of environmental management and bio-informatics.
Rutgers scientists studied evolution in invaded ecosystems using glass jar experiments with thousands of microscopic organisms. The study found that microbes' interactions altered performance and led to differences in resident and invading species.
A CU Boulder-led study found that rapid evolution at species habitat edges can drive population expansions, providing insight into climate change and invasive species encroachment. The study used red flour beetles and demonstrated that populations allowed to evolve independently at the edge spread 6% faster on average.
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 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 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 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.
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.
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.
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.