Quantifying Imported Fire Ant (Hymenoptera: Formicidae) Mounds with Airborne Digital Imagery

Vogt, James T.

doi:10.1603/0046-225x-33.4.1045

Cited by 18 publications

(18 citation statements)

References 17 publications

(6 reference statements)

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“…Our results may be useful in planning Þeld trials or other research projects that require high Þre ant abundance by allowing researchers to concentrate on those areas within a larger area that are likely to have numerous ant colonies based not only on canopy cover but insolation and other variables. For regional detection efforts using remote sensing (Vogt 2004), these data would be useful for ßight planning to concentrate on areas with potentially high Þre ant abundance, thus reducing costs, or areas with potentially larger mounds, increasing detection rates. Additional habitat characteristics that might inßuence Þre ant abundance include abundance of other arthropods and plant species composition, neither of which is readily acquired using remotely sensed data or internet sources.…”

Section: Discussionmentioning

confidence: 99%

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Distribution Patterns of Imported Fire Ants (Hymenoptera: Formicidae) on a Sheep and Goat Farm in Oklahoma

Vogt

Allen²,

Wallet³

et al. 2009

Environ Entomol

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Imported fire ant colonies were quantified in 1,000-m(2) circular subplots spaced approximately 125 m apart on a sheep and goat farm in Oklahoma. Social form (percent polygyny), mound density, cumulative above-ground mound volume, and average mound volume were subjected to multiple regression analyses to examine trends related to landscape metrics and habitat characteristics. Monogyne populations were spatially autocorrelated, and polygyne mounds tended to be smaller and more numerous. A model incorporating the effects of percent polygyny, canopy cover, and 1-d cumulative incident solar radiation explained 34% of the variation in mound density. Percent polygyny was not significantly related to cumulative mound volume, which provides a better estimate of overall ant biomass. A model incorporating the effects of 1-d cumulative incident solar radiation on the summer solstice, elevation, canopy cover, distance from cisterns, distance from water, and distance from trees explained 42% of the variation in cumulative mound volume. Monogyne mounds in areas that were flat and close to water in low-lying areas were largest. Results indicate that remotely sensed data in combination with publicly available U.S. Geological Survey data may be useful in predicting areas of high and low fire ant abundance at a field scale.

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Section: Discussionmentioning

confidence: 99%

“…Visual resolution of the imagery was just under 0.16 m. The camera system is described in detail in Vogt (2004). Because ground truth data were not obtained at the time of the ßight, data were calibrated to yield "reßectance-like" data using the log residuals tool in ENVI (ITT Industries, Boulder, CO) (Green and Craig 1985).…”

Section: Methodsmentioning

confidence: 99%

Distribution Patterns of Imported Fire Ants (Hymenoptera: Formicidae) on a Sheep and Goat Farm in Oklahoma

Vogt

Allen²,

Wallet³

et al. 2009

Environ Entomol

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“…The development of rapid detection of nests is important for assessing control efforts and monitoring dispersal. Satellite aerial imagery could be used to assess the distribution of S. invicta mounds on a large scale (Vogt 2004a(Vogt , 2004b, in addition to the deployment of trained dogs and spectrum analysis technology to inspect and count mounds (Lin et al 2011;Wu et al 2014c). Other new technologies are needed for rapid and accurate detection of mounds, thus facilitating precise, targeted insecticide treatments.…”

Section: Challengesmentioning

confidence: 99%

Prevalence and management of Solenopsis invicta in China

Wang¹,

Ling²,

Xu³

et al. 2020

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Red imported fire ant, Solenopsis invicta, was first found in Taiwan province of China in 2003. To prevent transboundary expansion, the Chinese government has formulated various control strategies in the last 15 years to slow down the spread of S. invicta. Despite all efforts, S. invicta invasion has reached more than 390 counties of 13 provinces and two special administrative regions in China; at present, S. invicta remains at the stage of rapid expansion. The transnational entry of S. invicta is linked to imported logs and wastepaper coming mostly from the United States. In domestic settings, long-distance expansion of S. invicta relied on potted plant and turf transportation. Both monogyne and polygyne social forms of S. invicta were present in China with polygyne colonies as the dominant one. Data on population and breeding dynamics of S. invicta reveal the presence of two peaks annually with nuptial flights occurring throughout the year. Arthropods, plant seeds, and honeydew are important food sources of S. invicta, thereby causing negative impacts on the abundance, diversity, and richness of native arthropod communities. Fire ants are threats not only to agriculture and power facilities, but also to human health, with more than 30% of people having suffered from the sting and 10% having experienced an allergic reaction. To address the expansion of S. invicta, the National Fire Ant Detection and Management Union was established and the formulation and implementation of management policies were drawn. Plant quarantine becomes an essential step in fire ant management, whereas the two-step method of combing toxic baits and contact dust emerges as the forefront method crucial in managing S. invicta. The experience and lessons learned from fire ant management in China could benefit other countries when facing similar challenges.

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“…In S. invicta the angle of the south slope of the mound is negatively correlated with the maximal sun angle 22 . Sun-influenced thermoregulation in termites has also been documented, for example in fungus-growing members of the genus Macrotermes 25 .…”

Section: Introductionmentioning

confidence: 96%

Thermoregulation strategies in ants in comparison to other social insects, with a focus on red wood ants (Formica rufa group)

Kadochová

Frouz

2014

F1000Res

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Temperature influences every aspect of ant biology, especially metabolic rate, growth and development. Maintenance of high inner nest temperature increases the rate of sexual brood development and thereby increases the colony fitness. Insect societies can achieve better thermoregulation than solitary insects due to the former’s ability to build large and elaborated nests and display complex behaviour. In ants and termites the upper part of the nest, the mound, often works as a solar collector and can also have an efficient ventilation system. Two thermoregulatory strategies could be applied. Firstly the ants use an increased thermal gradient available in the mound for brood relocation. Nurse workers move the brood according to the thermal gradients to ensure the ideal conditions for development. A precise perception of temperature and evolution of temperature preferences are needed to make the correct choices. A second thermoregulatory strategy used by mound nesting ants is keeping a high temperature inside large nests. The unique thermal and insulation properties of the nest material help to maintain stable conditions, which is the case of the Wood ant genus Formica. Ants can regulate thermal loss by moving nest aggregation and alternating nest ventilation. Metabolic heat produced by ant workers or associated micro organisms is an important additional source of heat which helps to maintain thermal homeostasis in the nest.

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Quantifying Imported Fire Ant (Hymenoptera: Formicidae) Mounds with Airborne Digital Imagery

Cited by 18 publications

References 17 publications

Distribution Patterns of Imported Fire Ants (Hymenoptera: Formicidae) on a Sheep and Goat Farm in Oklahoma

Distribution Patterns of Imported Fire Ants (Hymenoptera: Formicidae) on a Sheep and Goat Farm in Oklahoma

Prevalence and management of Solenopsis invicta in China

Thermoregulation strategies in ants in comparison to other social insects, with a focus on red wood ants (Formica rufa group)

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