57,861 research outputs found

    Evaluation of Gaucho Seed Treatment and Soil Insecticides for Management of the Red Imported Fire Ant on Seedling Grain Sorghum During 1994-1996 (Research Report #101)

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    Seed treatments have been used in Louisiana and Texas to prevent red imported fire ant damage in grain sorghum. Seed-protecting insecticides often repel or kill red imported fire ants. This publication includes information on current research in Louisiana that is focused on developing insecticide use strategies to manage the red imported fire ant in grain sorghum.https://digitalcommons.lsu.edu/agcenter_researchreports/1020/thumbnail.jp

    Effects of Red Imported Fire Ants (Solenopsis invicta) on the Species Structure of Ant Communities in South China

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    We evaluated the effects of invasive red imported fire ants (RIFAs), Solenopsis invicta Buren, on native ant communities at three habitats in South China. By using paired control and treatment plots, the change in diversity and community structure of native ants due to the invasion of red imported fire ants could be observed. Ant species richness was reduced by 46 and 33% at RIFA-infested lawn and pasture habitats, respectively; however, the ant species richness in the lichee orchard was not affected by red imported fire ants. Our results indicated that red imported fire ants became one of several dominant species or the only dominant species in all three habitats in South China

    Eradication of two incursions of the Red Imported Fire Ant in Queensland, Australia

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    Of the five known incursions of the highly invasive Red Imported Fire Ant in Australia, two are regarded to have been eradicated. As treatment efforts continue, and the programme evolves and new tools become available, eradication is still considered to be feasible for the remaining Red Imported Fire Ant populations with long-term commitment and support

    Eradication of two incursions of the Red Imported Fire Ant in Queensland, Australia

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    Of the five known incursions of the highly invasive Red Imported Fire Ant in Australia, two are regarded to have been eradicated. As treatment efforts continue, and the programme evolves and new tools become available, eradication is still considered to be feasible for the remaining Red Imported Fire Ant populations with long-term commitment and support

    Imported Fire Ants

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    Imported fire ants (Order Hymenoptera, Family Formicidae) (IFA) are social insects representing two South American ant species: the red imported fire ant (Solenopsis invicta Buren) and black imported fire ant (Solenopsis richteri Forel), along with their hybrid offspring. IFA are native to South America, where their colonies are kept in check by native competitors, predators, and parasites. However, they have invaded other countries, including Australia, New Zealand, and the U.S., causing agricultural, ecological, economical, nuisance, and public health problems, which are described in more detail in this fact sheet. Management is also addressed

    Development of Food-Luring Baited Traps for Solenopsis invicta (Hymenoptera: Formicidae) Monitoring in the Field in Southern China

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    Solenopsis invicta Buren (Hymenoptera: Formicidae), a red imported fire ant that originated from South America, is a worldwide invasive pest. This study investigated the efficacy of the newly designed baited trap to detect red imported fire ants, Solenopsis invicta Buren, under field conditions in China. Among the five food lures tested for red imported fire ants, the ants preferred ham sausage and fish powder, followed by mixed powder (50% fish powder + 50% black soldier fly powder) and black soldier fly powder. These lures were compared to sugar water (control) to determine their efficacy in trapping red imported fire ants. Field data revealed that the ham sausage powder trap was more efficient than the fish powder trap based on its ability to trap more red imported fire ants under field conditions and ease of use. Thus, it was concluded that the baited traps are efficient for longterm red imported fire ants monitoring

    Does Habitat Management for Northern Bobwhites Benefit the Red Imported Fire Ant?

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    Red imported fire ants (Solenopsis invicta) have caused damage to agricultural, economic, and wildlife resources since their accidental introduction. Previous studies have suggested that red imported fire ant (RIFA) mound densities are positively correlated to habitats maintained through disturbance. Prescribed burning and disking are two techniques commonly used to disturb portions of the landscape to maintain early successional habitats for northern bobwhite (Colinus virginianus). We tested the hypothesis that prescribed burning and disking would increase RIFA mound densities. This study was conducted in Refugio County, Texas in the Texas Coastal Prairie on Loamy Prairie range sites. Red imported fire ant mound densities were different between years (F = 5.05, df = 2, P = 0.0148). However, burning and disking had no impact (F = 0.22, df = 2, P = 0.8044) on RIFA mound densities. Initially high RIFA mound densities in our study area coupled with the territoriality of predominantly monogyne (single-queen) colonies may have limited increases in RIFA mound density in response to treatments on these study sites

    PB1739-Managing Fire Ants in Urban Areas

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    The red imported fire ant, Solenopsis invicta Buren, the black imported fire ant, Solenopsis richteri Forel, and their hybrid are nuisance insects and their stings can cause serious medical problems. Imported fire ants interfere with outdoor activities and harm wildlife throughout the southern United States. Ant mounds are unsightly and may reduce land values. In some cases, imported fire ants are considered to be beneficial because they prey upon other arthropod pests. In urban areas, fire ants prey on flea larvae, chinch bugs, cockroach eggs, ticks and other pests. In many infested areas, the problems outweigh the benefits and controlling fire ants is highly desirable. However, eradication of these species is not currently feasible (see History of Control Efforts). When deciding whether or not to control fire ants, one must weigh the benefits of fire ant control against the cost and environmental impact of control methods. The biological control of fire ants may not be compatible with some types of insecticide use. Insecticides are not always 100 percent effective, nor are most approved for use everywhere that ants occur. Insecticides are also expensive and potentially hazardous to the environment and other animals. Chemicals provide only temporary control of fire ants and must be reapplied periodically. Where applicable, you should select programs (for urban or agricultural areas) that use a combination of non-chemical and chemical methods that are effective, economical and least harmful to the environment

    SP419-The Two-Step Method: Managing Fire Ants Around Homes and In Neighborhoods

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    Experts predict most of Tennessee is suitable for fire ant survival. Recent research from The University of Tennessee indicates the hybrid form found in East and parts of Middle Tennessee is more cold-tolerant than either parent species (the red or black imported fire ant). Therefore, we must learn how to manage these pesky ants. Once fire ants are established in an area, weʼll need to apply the two-step method twice a year

    Controlling invasive ant species: a theoretical strategy for efficient monitoring in the early stage of invasion

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    Invasion by the red imported fire ant, Solenopsis invicta Buren, has destructive effects on native biodiversity, agriculture, and public health. This ant's aggressive foraging behaviour and high reproductive capability have enabled its establishment of wild populations in most regions into which it has been imported. An important aspect of eradication is thorough nest monitoring and destruction during early invasion to prevent range expansion. The question is: How intense must monitoring be on temporal and spatial scales to eradicate the fire ant? Assuming that the ant was introduced into a region and that monitoring was conducted immediately after nest detection in an effort to detect all other potentially established nests, we developed a mathematical model to investigate detection rates. Setting the monitoring limit to three years, the detection rate was maximized when monitoring was conducted shifting bait trap locations and setting them at intervals of 30 m for each monitoring. Monitoring should be conducted in a radius of at least 4 km around the source nest, or wider --depending on how late a nest is found. For ease of application, we also derived equations for finding the minimum bait interval required in an arbitrary ant species for thorough monitoring.Comment: Revised the manuscrip
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