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Insectes Sociaux

, Volume 58, Issue 3, pp 299–308 | Cite as

Choice of nest site protects army ant colonies from environmental extremes in tropical montane forest

  • T. W. SoareEmail author
  • S. I. Tully
  • S. K. Willson
  • D. J. C. Kronauer
  • S. O’Donnell
RESEARCH ARTICLE (C.W. RETTENMEYER MEMORIAL PAPER)

Abstract

Unlike most social insects, Eciton burchellii army ants cannot thermoregulate through nest construction. Instead, army ants thermoregulate behaviorally by creating a living nest (bivouac), shifting its position and structure, and potentially through nest site selection. We hypothesized that bivouac site selection is critical to E. burchellii colony survival. We predicted elevation above sea level, with associated variation in local abiotic environments, would affect bivouac site selection by E. burchellii colonies. We also expected nest sites to buffer against ambient variation in abiotic conditions. We recorded bivouac site choice by E. burchellii colonies at sites ranging from lowland wet forests to montane forests and reviewed previously published data. We measured microclimatic variables associated with nest sites in high-elevation montane forests: temperature, relative humidity, and light levels. Bivouac site selection varied with elevation: as elevation increased, fewer bivouac sites were exposed, more were underground, and fewer were elevated (in trees). High-elevation bivouac sites moderated diurnal temperature variation and had higher relative humidity levels and lower light levels than ambient conditions. The buffering of ambient temperature and humidity decreased with elevation in montane forests, suggesting that abiotic extremes in bivouac sites at the highest elevations may contribute to the upper elevational range limits of E. burchellii.

Keywords

Thermoregulation Nest site selection House-hunting Eciton burchellii Bivouac 

Notes

Acknowledgments

Yamile Molina, the UW Biology Manuscript Writing Course, and two anonymous referees made helpful comments on earlier drafts. We thank the Stuckey family, the Rockwell family, the Monteverde Conservation League, the Monteverde Cloud Forest Reserve, the Monteverde Butterfly Garden, and the University of Georgia station at San Luis for allowing us to work on their lands. Various residents of Monteverde, especially the Joyce-van Dusen family, and the Monteverde Institute provided logistical support. Funding was provided by NSF grants IBN 0347315 and IOS 0923680 and a Research Experiences for Undergraduates supplement to S.O’D. Field research was conducted under permits from the Costa Rican government (MINAE scientific passport #04303), and in accordance with the laws of Costa Rica. S.K.W. acknowledges funding support by the Teagle Foundation, Trans World Airlines (TWA), a Graduate Assistance in Areas of National Need (GAANN) Fellowship, the Organization for American States (OAS), a Ford-Knight Fellowship through Earlham College, and a Center for International and Intercultural Studies (CIIS) Fellowship through St. Lawrence University. D.J.C.K. thanks Edith Rodríguez and John Lattke for help during fieldwork, and Koos Boomsma and the Danish Research Training Council for research support.

References

  1. Berghoff S.M., Kronauer D.J.C., Edwards K.J. and Franks N.R. 2008. Dispersal and population structure of a New World predator, the army ant Eciton burchellii. J. Evol. Biol. 21: 1125–1132Google Scholar
  2. Bollazzi M., Kronenbitter J. and Roces F. 2008. Soil temperature, digging behavior, and the adaptive value of nest depth in South American species of Acromyrmex leaf-cutting ants. Oecologia 158: 165–175Google Scholar
  3. Camazine S., Visscher P.K., Finley J. and Vetter R.S. 1999. House-hunting by honey bee swarms: collective decisions and individual behaviors. Insect. Soc. 46: 348–360Google Scholar
  4. Clark K.L., Lawton R.O. and Butler P.R. 2000. The Physical Environment. In: Monteverde: Ecology and Conservation of a Tropical Cloud Forest (Nadkarni N.M. and Wheelwright N.T., Eds), Oxford University Press, New York Oxford. pp 15–38Google Scholar
  5. Dejean A., Carpenter J.M., Gibernau M., Leponce M. and Corbara B. 2010. Nest relocation and high mortality rate in a Neotropical social wasp: Impact of an exceptionally rainy La Niña year. C.R. Biol. 333: 35–40Google Scholar
  6. Franks N.R. 1982a. Ecology and population regulation in the army ants, Eciton burchelli. In: The Ecology of a Tropical Forest (Leigh, Jr. E.G., Rand A.S. and Windsor D.W., Eds), Smithsonian Institute Press, Washington. pp 389–395Google Scholar
  7. Franks N.R. 1982b. Social insects in the Aftermath of Swarm Raids of the Army Ant Eciton burchelli. In: The Biology of Social Insects: Proc. 9th Congr. IUSSI (Breed M.D., Michener C.D. and Evans H.E., Eds), Westview Press, Boulder. pp 275–279Google Scholar
  8. Franks N.R. 1989. Thermoregulation in army ant bivouacs. Physiol. Entomol. 14: 397–404Google Scholar
  9. Franks N.R. and Bossert W.H. 1983. Swarm raiding army ants and the patchiness and diversity of a tropical leaf litter ant community. In: The Tropical Rain Forest (Sutton S.L., Chadwick A.C. and Whitmore T.C., Eds), British Ecological Society Symposium, Blackwells, Oxford. pp 151–163Google Scholar
  10. Franks N.R. and Fletcher C.R. 1983. Spatial patterns in army ant foraging and migration: Eciton burchelli on Barro Colorado Island, Panama. Behav. Ecol. Sociobiol. 12: 261–270Google Scholar
  11. Franks N.R., Hooper J., Webb C. and Dornhaus A. 2005. Tomb evaders: house-hunting hygiene in ants. Biol. Lett. 1: 190–192Google Scholar
  12. Gardner K.E., Foster R.L. and O’Donnell S. 2007. Experimental analysis of worker division of labor in bumblebee nest thermoregulation (Bombus huntii, Hymenoptera: Apidae). Behav. Ecol. Sociobiol. 61: 783–792Google Scholar
  13. Gotwald W.H. 1995. Army Ants: the Biology of Social Predation. Cornell University Press, Ithaca. 302 ppGoogle Scholar
  14. Hölldobler B. and Wilson E.O. 1990. The Ants. The Belknap Press, Cambridge. 732 ppGoogle Scholar
  15. Jackson W.B. 1957. Microclimatic patterns in the army ant bivouac. Ecology 38: 276–285Google Scholar
  16. Jaffe R., Moritz R.F.A. and Kraus F.B. 2009. Gene flow is maintained by polyandry and male dispersal in the army ant Eciton burchellii. Popul. Ecol. 51: 227–236Google Scholar
  17. Jones J.C. and Oldroyd B.P. 2007. Nest thermoregulation in social insects. Adv. Insect. Physiol. 33: 153–191Google Scholar
  18. Kaspari M. and O’Donnell S. 2003. High rates of army ant raids in the Neotropics and implications for ant colony and community structure. Evol. Ecol. Res. 5: 933–939Google Scholar
  19. Korb J. and Linsenmair K.E. 1998. The effect of temperature on the architecture and distribution of Macrotermes bellicosus (Isoptera, Macrotermitinae) mounds in different habitats of West African Guinea savanna. Insect. Soc. 45: 51–65Google Scholar
  20. Kronauer D.J.C., Rodriguez Ponce E.R., Lattke J.E. and Boomsma J.J. 2007. Six weeks in the life of a reproducing army ant colony: male parentage and colony behavior. Insect. Soc. 54: 118–123Google Scholar
  21. Kumar A. and O’Donnell S. 2007. Fragmentation and elevation effects on bird-army ant interactions in Neotropical montane forest of Costa Rica. J. Trop. Biol. 23: 581–590Google Scholar
  22. Kumar A. and O’Donnell S. 2009. Elevation and forest clearing effects on foraging differ between surface – and subterranean – foraging army ants (Formicidae: Ecitoninae). J. Anim. Ecol. 78: 91–97Google Scholar
  23. Longino J.T. 2005. Complex nesting behavior by two neotropical species of the ant genus Stenamma (Hymenoptera: Formicidae). Biotropica 47: 670–675Google Scholar
  24. McGlynn T.P. 2007. Serial monodomy in ants: an antipredator strategy? Ecol. Entomol. 32: 621–626Google Scholar
  25. McGlynn T.P., Carr R.A., Carson J.H. and Buma J. 2004. Frequent nest relocation in the ant Aphaenogaster araneoides: resources, competition, and natural enemies. Oikos 106: 611–621Google Scholar
  26. Meisel J.E. 2006. Thermal ecology of the Neotropical army ant Eciton burchellii. Ecol. Appl. 16: 913–922Google Scholar
  27. O’Donnell S. and Kumar A. 2006. Microclimatic factors associated with elevational changes in army ant density in tropical montane forest. Ecol. Entomol. 31: 491–498Google Scholar
  28. O’Donnell S., Lattke J., Powell S. and Kaspari M. 2007. Army ants in four forests: geographic variation in raid rates and species composition. J. Anim. Ecol. 76: 580–589Google Scholar
  29. O’Donnell S., Lattke J., Powell S. and Kaspari M. 2009. Species and site differences in Neotropical army ant emigration behaviour. Ecol. Entomol. 34: 476–482Google Scholar
  30. Otis G.W., Santana C.E., Crawford D.L. and Higgins M.L. 1986. The effect of foraging army ants on leaf-litter arthropods. Biotropica 18: 56–61Google Scholar
  31. Penick C.A. and Tschinkel W.R. 2008. Thermoregulatory brood transport in the fire ant, Solenopsis invicta. Insect. Soc. 55: 176–182Google Scholar
  32. Pratt S.C., Mallon E.B., Sumpter D.J.T. and Franks N.R. 2002. Quorum sensing, recruitment and collective decision-making during colony emigration by the ant Leptothorax albipennis. Behav. Ecol. Sociobiol. 52: 117–127Google Scholar
  33. Rettenmeyer C.W. 1963. Behavioral studies of army ants. Univ. Kansas Sci. Bull. 64: 281–465Google Scholar
  34. Roberts D.L., Cooper R.J. and Petit L.J. 2000. Use of premontane moist forest and shade coffee plantations by army ants in Western Panama. Cons. Biol. 14: 192–199Google Scholar
  35. Schneirla T.C. 1971. Army Ants: A Study in Social Organization (Topoff H.R., Ed), WH Freeman and Company, San Francisco. 349 ppGoogle Scholar
  36. Schneirla T.C., Brown R.Z. and Brown F.C. 1954. The bivouac or temporary nest as an adaptive factor in certain terrestrial species of army ants. Ecol. Monogr. 24: 269–296Google Scholar
  37. Seeley T.D. and Buhrman S.C. 1999. Group decision making in swarms of honey bees. Behav. Ecol. Sociobiol. 45: 19–31Google Scholar
  38. Seeley T.D. and Heinrich B. 1981. Regulation of temperature in the nests of social insects. In: Insect Thermoregulation (Heinrich B., Ed), Wiley, New York. pp 159–234Google Scholar
  39. Starks P.T. and Gilley D.C. 1999. Heat shielding: a novel method of colonial thermoregulation in honey bees. Naturwissenschaften 86: 438–440Google Scholar
  40. Teles da Silva M. 1977. Behavior of the army ant Eciton burchelli Westwood (Hymenoptera, Formicidae) in the Belem region. II. Bivouacs. Bolm. Zool., Univ. S. Paulo 2: 107–128Google Scholar
  41. Vidal-Riggs J.M. and Chaves-Campos J. 2008. Method review: estimation of colony densities of the army ant Eciton burchellii in Costa Rica. Biotropica 40: 259–262Google Scholar
  42. Visscher P.K. 2007. Group decision making in nest-site selection among social insects. Annu. Rev. Entomol. 52: 255–275Google Scholar
  43. Watkins J.F. 1976. The Identification and Distribution of New World Army Ants (Dorylinae: Formicidae). Baylor University Press, Waco. 102 ppGoogle Scholar
  44. Willis E.O. and Oniki Y. 1978. Birds and army ants. Annu. Rev. Ecol. Syst. 9: 243–263Google Scholar
  45. Willson S.K. 2003. Army ants and obligate ant-following birds: A study of ecology, spatial movement patterns and behavior in Amazonian Peru. PhD thesis, University of Missouri - Columbia, Missouri. 200 ppGoogle Scholar

Copyright information

© International Union for the Study of Social Insects (IUSSI) 2010

Authors and Affiliations

  • T. W. Soare
    • 1
    Email author
  • S. I. Tully
    • 1
  • S. K. Willson
    • 2
  • D. J. C. Kronauer
    • 3
  • S. O’Donnell
    • 1
  1. 1.Department of PsychologyUniversity of WashingtonSeattleUSA
  2. 2.Department of BiologySt. Lawrence UniversityCantonUSA
  3. 3.Museum of Comparative Zoology LabsHarvard UniversityCambridgeUSA

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