Desiccation Resistance in Populations of the Red Imported Fire Ant (Hymenoptera: Formicidae)

Phillips, Sherman A.; Jusino-Atresino, Rafael; Thorvilson, Harlan G.

doi:10.1093/ee/25.2.460

Cited by 13 publications

(7 citation statements)

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“…Variation exists among Solenopsis species in their physiological tolerance to desiccation (Braulick et al, 1988). In a study of desiccation resistance of S. invicta in Texas, populations from the western part of the state were found to be less prone to desiccation than those from the eastern part of the state, suggesting that S. invicta may be able to adapt to more xeric conditions (Phillips et al, 1996). The aim of this study was to investigate the adaptation and adjustability of the S. invicta colony and individual.…”

Section: Introductionmentioning

confidence: 99%

Effect of soil humidity on the survival of Solenopsis invicta Buren workers

Ling

et al. 2009

Insect. Soc.

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The effect of soil humidity on the survival of Solenopsis invicta (Buren) workers was evaluated in this study. The study showed that the relative soil water (RSW) content inside the mound contained less variation than the surrounding soil. At a depth of 5 cm underground, the RSW was 7.6% in the mound, while it was 29% in the surrounding soil. At a depth of 20 cm underground, the RSW was 99% in the surrounding soil, while in the mound, the RSW did not reach 98% until it was 45-cm deep. The soil humidity affected the survival rate of S. invicta. For workers, the survival rate decreased when they were exposed to a higher RSW. The spring population had a higher tolerance to a high RSW than the autumn population, while the drought tolerance was the opposite. In extreme RSW, the longer that S. invicta was exposed, the lower their survival rate. The drought tolerance of the fire ant workers could be improved if they were pre-exposed to a low non-lethal RSW for a short period of time. The water content of the workers changed after acclimation to humidity. After a low RSW treatment, the water content of the acclimated workers was higher than the control workers. This suggests that this species is able to maintain a certain water content after acclimation, and that the water content of workers increases in accordance with the RSW.

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Section: Introductionmentioning

confidence: 99%

Effect of soil humidity on the survival of Solenopsis invicta Buren workers

Ling

et al. 2009

Insect. Soc.

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“…Additionally, fire ants are conspicuous, easily collected, and have been extensively studied due to their invasion of the southeastern United States. Fire ant desiccation resistance is reported by Phillips et al (1996), metabolic rates are reported by Vogt and Appel (1999), and thermal limits are reported by Cokendolpher and Phillips (1990). However, none of these studies address ant body size and its potential impact on these physiological metrics.…”

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confidence: 99%

“…Larger workers with higher thermal tolerances represent an advantage for the colony. Larger workers showed a higher resistance to heat and higher desiccation resistance than did the smaller nest mates, possibly due to their lower surface-area-to-volume ratios (Hood and Tschinkel, 1990;Phillips et al, 1996;Cerda and Retana, 2000;Clémencet et al, 2010). For the colony, larger workers with a lower desiccation rate, lower maintenance costs, and a higher CTmax provided advantages in terms of the services those workers are capable of providing and the conditions under which they were able to function (Wilson, 1976;Beshers and Traniello, 1994;Clémencet et al, 2008;Clémencet et al, 2010;Shik 2010).…”

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Critical thermal maxima and body size positively correlate in red imported fire ants,Solenopsis invicta

Wendt

Verble-Pearson

2016

The Southwestern Naturalist

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“…Thus, occupation of wildlands is expected to be limited to lower elevation riparian zones or irrigated areas adjacent to urban areas. However, red imported fire ants have recently invaded areas of west Texas formerly thought to be too dry for the species, and there is evidence that this represents a heritable adaptation (Mackay and Fagerlund 1997;Li and Heinz 1998;Phillips et al 1996). Thus, there is potential for the ants to eventually occupy portions of California previously thought to be too dry.…”

Section: Red Imported Fire Ants (Solenopsis Invicta)mentioning

confidence: 99%

Southern California Mountains and Foothills Assessment: Habitat and Species Conservation Issues

Stephenson¹,

Calcarone²

2016

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Stephenson, John R.; Calcarone, Gena M. 1999. Southern California mountains and foothills assessment: habitat and species conservation issues. General Technical Report GTR-PSW-175. Albany, CA: Pacific Southwest Research Station, Forest Service, U.S. Department of Agriculture; 402 p. The Southern California Mountains and Foothills Assessment: Habitat and SpeciesConservation Issues provides detailed information about current conditions and trends for ecological systems and species in the region. This information can be used by land managers to develop broad land management goals and priorities and provides the context for decisions specific to smaller geographic areas. The assessment area covers 6.1 million acres, of which 56 percent are national forest system lands. Over eighteen million people live in the coastal basin bordering the assessment area. As compared to historic conditions, mountain and foothill ecosystems in this region have undergone dramatic changes. Forested landscapes are more susceptible to stand-replacing fires. Invasive non-native species have become widely established, causing a decline in habitat capability for many native plants and animals. An extensive network of dams and diversions has altered aquatic systems. Some areas of high ecological integrity remain and can serve as building blocks for restoration. Biological diversity is not uniformly distributed across the landscape; rare species in particular tend to be concentrated in certain habitats. Key areas of high ecological integrity and rare species assemblages are identified in this report. This assessment provides a rich information base, including over eighty mapped themes with associated models and databases, from which future decisions can benefit.Retrieval Terms: Southern California, ecosystem, biodiversity, land management Publisher:Albany, California The U.S. Department of Agriculture (USDA) prohibits discrimination in its programs on the basis of race, color, national origin, sex, religion, age, disability, political beliefs, and marital or familial status. (Not all prohibited bases apply to all programs.) Persons with disabilities who require alternative means for communication of program information (braille, large print, audiotape, etc.) should contact USDA's TARGET Center at 202-720-2600 (voice and TDD).To file a compliant, write the Secretary of Agriculture, U.S. Department of Agriculture, Washington, DC 20250, or call (800) 245-6340 (voice) or (202) 720-1127 (TDD). USDA is an equal employment opportunity employer. iii Contents ............................................................................................................... iii List of Figures and Tables ........................................................................................ vii Preface ............................................................................................................... xiii Contributors.......................................................................................................... xiv C...

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Desiccation Resistance in Populations of the Red Imported Fire Ant (Hymenoptera: Formicidae)

Cited by 13 publications

References 0 publications

Effect of soil humidity on the survival of Solenopsis invicta Buren workers

Effect of soil humidity on the survival of Solenopsis invicta Buren workers

Critical thermal maxima and body size positively correlate in red imported fire ants,Solenopsis invicta

Southern California Mountains and Foothills Assessment: Habitat and Species Conservation Issues

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