Foraging territoriality of the imported fire ant,Solenopsis invicta Buren, in surgarcane as determined by neutron activation analysis

  title={Foraging territoriality of the imported fire ant,Solenopsis invicta Buren, in surgarcane as determined by neutron activation analysis},
  author={Allan T. Showler and Ronald M. Knaus and Thomas E. Reagan},
  journal={Insectes Sociaux},
SummaryImported fire ant,Solenopsis invicta Buren, colonies in weedy and weed-free Louisiana sugarcane habitats were labeled with the nonradioactive, stable-activable tracer element samarium, to be compatible with an agroecosystem in current food production. Instrumental neutron activiton analyses of samarium revealed that the ants foraged 9% of the sampling stations in weed-free areas and 6.4% of the stations in weed habitats. The significantly smaller territorial size in weedy areas was a… 

Resource Partitioning Among Colonies of Polygyne Red Imported Fire Ants (Hymenoptera: Formicidae)

Results show ≈66% of the variation in foraging can be explained through colony size, location, and recruiting ability; however, foraging interference among ants from adjacent colonies occurs and may result in unequal sharing of resources (i.e., resource partitioning) among colonies.

Behavioral Discrimination between Monogyne and Polygyne Red Fire Ants (Hymenoptera: Formicidae) in their Native Range

Assessment of discrimination behaviors of both polygynous and monogynous forms of the red fire ant, Solenopsis invicta Buren, during symmetrical interactions in neutral arenas identified monogyne and polygyne forms of S.invicta colonies in concordance with current measures, including number of queens and expression of the Gp-9 gene.

Effects of Weeds on Selected Arthropod Herbivore and Natural Enemy Populations, and on Cotton Growth and Yield

Vegetative diversification with weeds can enhance natural enemy populations and suppress pest-related damage in various crops, and diversity on weedy cotton plants was greater than on weed-free cotton plants during 2000.

Higher Ant Diversity in Native Vegetation Than in Stands of the Invasive Arundo, Arundo donax L., Along the Rio Grande Basin in Texas, USA

It is suggested that the greater heterogeneous nature of native vegetation provided greater and more predictable nourishment in the form of nectars and more abundant arthropod prey when compared with Arundo stands.

Non-native and Invasive Nylanderia Crazy Ants (Hymenoptera: Formicidae) of the World: Integrating Genomics to Enhance Taxonomic Preparedness

This review comprehensively synthesizes information available for 15 known and five potential tramp ant species in Nylanderia (Emery) (Hymenoptera: Formicidae): a globally distributed genus of over 130 described species, many of which are only diagnosable by subtle morphological characters.

Mexican Rice Borer Control Tactics in United States Sugarcane

The invasive Mexican rice borer, Eoreuma loftini (Dyar), expanded its range from Mexico to South Texas in the early 1980s. By 2008 the pest had moved into sugarcane- and rice-growing areas of East

Developing molecular diagnostics for detection of red imported fire ants using two genes, Sinv11108 and Sinv11977.

It is found that RIFAs could be confirmed by conventional PCR targeting of two RIFA-specific genes followed by agarose electrophoresis separation, and TaqMan probe real-time PCR methods had the advantage of confirming RifAs immediately after the reactions were completed by observing fluorescence indexes.

An experiment using neutron activation analysis and a rare earth element to mark cotton plants and two insects that feed on them.

Selected Abiotic and Biotic Environmental Stress Factors Affecting Two Economically Important Sugarcane Stalk Boring Pests in the United States

The adverse effects of each stress factor, in terms of stalk borer attack, can be reduced by adopting appropriate cultural practices, such as adequate irrigation, judicious use of nitrogen fertilizer, using noncompetitive weed growth, and not planting vulnerable crops near sugarcane fields.



Influence of Selected Weedy and Weed-free Sugarcane Habitats on Diet Composition and Foraging Activity of the Imported Fire Ant (Hymenoptera: Formicidae)

Investigation in selected weedy sugarcane habitats showed that the most frequent foraging occurred in grass habitats, which also had the greatest vegetation density and above-ground biomass, showing that IFA population levels can be enhanced through judicious vegetation management.

Foraging Territories of Imported Fire Ants

Field studies show that definite foraging territories do exist and that they are easily defined, and that each colony operates as an isolated unit.

Pitfall Trapping as a Method for Studying Populations of Carabidae (Coleoptera)

Pitfall traps provide a convenient method of investigating the ecology of adult Carabidae and have been used in studies on such topics as the seasonal incidence of adults, the spatial pattern of

Student Symposium: Alternatives to Chemical Control of Insects: The Versatility of Radiotracer Methods for Studying Insect Ethology and Ecology

The versatility of radiotracers was shown to enhance their utility in research in contrast with conventional marking techniques.

Sweep Net and Ground Cloth Sampling for Insects in Soybeans

A comparison of sweep net and ground doth sampling techniques showed that field population estimates by the 2 methods are strongly correlated for soybean pests including southern green stink bug,

Accretion and canal impacts in a rapidly subsiding wetland. III. A new soil horizon marker method for measuring recent accretion

A new methodology used on a large scale is reported by which short-term (≤1 yr) marsh accretion rates were measured in saltwater and brackish marshes and compared to first-time measurements made in

Experiments on radio-activation labelling of the tsetse fly, Glossina morsitans.

An automated neutron activation procedure for screening PCB content of oil

An analytical procedure for rapidly screening large numbers of oils for polychlorinated biphenyl (PCB) content has been developed and is now in routine use. Pontential levels of PCBs are inferred

Double activation analysis: A new application of established techniques

  • R. KnausL. R. Curry
  • Environmental Science
    Bulletin of environmental contamination and toxicology
  • 1979
The over-lapping data points shown as open and closed circles and the continuation of data points for up to 20 days establish the usefulness of the double activation analysis technique for short-term and long-term tracer studies.