Orientation of mounds in the antSolenopsis invicta (Hymenoptera, Formicidae, Myrmicinae)

  title={Orientation of mounds in the antSolenopsis invicta (Hymenoptera, Formicidae, Myrmicinae)},
  author={Michael D. Hubbard and William G. Cunningham},
  journal={Insectes Sociaux},
SummaryMost mounds of the myrmicine antSolenopsis invicta in the area of Tallahassee (Florida, U.S.A.), were found to be oval in shape with the long axis of the mound oriented in a north-south direction. This «magnetic» orientation is of probable thermoregulatory significance and is comparable to mound orientation phenomena found in the ant subfamily Formicinac and in the termites.RésuméLa plupart des dômes des nids de la fourmiSolenopsis invicta, aux environs de Tallahassee (Floride), sont de… Expand
Imported Fire Ant (Hymenoptera: Formicidae) Mound Shape Characteristics Along a North–South Gradient
Under favorable temperature conditions and average rainfall, imported fire ant mounds were tallest, most eccentric, and had the steepest south facing slopes during periods of low maximum sun angle. Expand
It is found that the northernmost colonies of the imported red fire ant had higher mean supercooling points than the southernmost colonies, and there was little variation in head capsule widths of the minor workers that were measured. Expand
Thermoregulatory brood transport in the fire ant, Solenopsis invicta
Temperature tracking within the nest is key to understanding thermoregulatory placement of fire ant brood, as well as insight into the production of sexual brood and reproduction. Expand
Dynamic Thermal Structure of Imported Fire Ant Mounds
The results indicate that the temperature differences between mounds and their surroundings are sufficient for detection using thermal infrared remote sensing, and predictable temporal changes in surface temperature may be useful for classifying mounds in images. Expand
Detection of Imported Fire Ant (Hymenoptera: Formicidae) Mounds with Satellite Imagery
Satellite imagery (0.65-m resolution, panchromatic) was tested as a detection tool for imported fire ant mounds in northeast Mississippi pasture and predicted detection rates ranged from 24% for small mounds to 66% for large mounds, based on mound height and mound area. Expand
Distribution of the red imported fire ant, shape Solenopsis invicta, in road and powerline habitats
For early-successional species, road and powerline cuts through forests provide refugia and source populations for invading adjacent forest gaps. Within an 800 km2 forest matrix in South Carolina, weExpand
Quantifying Imported Fire Ant (Hymenoptera: Formicidae) Mounds with Airborne Digital Imagery
Airborne multispectral digital imagery was used to detect imported fire ant mounds in northeast Mississippi pasture and false color infrared images were generally superior to true color images for mound detection. Expand
Response of a Gall-Forming Guild (Hymenoptera: Cynipidae) to Stressed and Vigorous Prairie Roses
Abstract Two general hypotheses that describe the relationship between plant quality and host-plant preference of insect herbivores are the plant-stress and plant-vigor hypotheses. We examined theExpand
Empty Gonometa postica cocoons function as nest sites and shelters for arboreal ants
The University of Pretoria (RDP funding to Michelle Greve), the South African National Research Foundation (grant number: 101515) and the South Africa National Biodiversity Institute (grants number): 101515 help to fund this research. Expand
Ant mound as an optimal shape in constructal design: solar irradiation and circadian brood/fungi-warming sorties.
Several constructal design problems are formulated with the criteria involving either a pure solar energy gained by the dome or this energy, as a mathematical criterion, penalized by additive terms of mechanical energy lost by the ants in their diurnal forays from a "heartland" of the nest to the sun-basking zone on the surface. Expand


Some Consequences of the Shape and Orientation of 'magnetic' Termite Mounds.
Thermal gradients within the nest support the idea that convection currents may aid air circulation and an hypothesis is advanced to account for the evolution of the unusual wedge-like shape of the magnetic nests. Expand
Ant‐mounds as to temperature and sunshine
The ant Formica exsectoides F. builds mounds with some reference to sunlight, and measurements of internal temperatures have shown them higher in upper parts of the mound, but different in differentExpand
Über den Sozialen Wärmehaushalt der Waldameise (Formica Rufa Var. Rufo-Pratensis For.)
  • A. Steiner
  • Biology
  • Zeitschrift für vergleichende Physiologie
  • 2004
Zusammenfassung1.In dem S. 25 bezeichneten Untersuchungsgebiet ist der optimale Wärmehaushalt der Formica rufa-Staaten während der „guten Jahreszeit“ charakterisiert durch eine Temperaturzone vonExpand
The Insect Societies
Conducts a definitive study of the social structure and symbiotic relationships of termites, social wasps, bees, and ants.
Revisionary studies on the taxonomy of the imported fire ants.
An Introduction to the Behaviour of Ants
- S ta t i s t ica l me thods for the ana lys i s of p rob lems in a n i m a l
  • 1965