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Journal of Chemical Ecology

, Volume 35, Issue 3, pp 355–367 | Cite as

Fine Tuning of Social Integration by Two Myrmecophiles of the Ponerine Army Ant, Leptogenys distinguenda

  • Volker Witte
  • Susanne Foitzik
  • Rosli Hashim
  • Ulrich Maschwitz
  • Stefan Schulz
Article

Abstract

Myrmecophiles are animals that live in close association with ants and that frequently develop elaborate mechanisms to infiltrate their well-defended host societies. We compare the social integration strategies of two myrmecophilic species, the spider, Gamasomorpha maschwitzi, and the newly described silverfish, Malayatelura ponerophila gen. n. sp. n., into colonies of the ponerine army ant, Leptogenys distinguenda (Emery) (Hymenoptera: Formicidae). Both symbionts use chemical mimicry through adoption of host cuticular hydrocarbons. Exchange experiments between L. distinguenda and an undetermined Leptogenys species demonstrate that reduced aggression toward alien ants and increased social acceptance occurred with individuals of higher chemical similarity in their cuticular hydrocarbon profiles. We found striking differences in chemical and behavioral strategies between the two myrmecophiles. Spider cuticular hydrocarbon profiles were chemically less similar to the host than silverfish profiles were. Nevertheless, spiders received significantly fewer attacks from host ants and survived longer in laboratory colonies, whereas silverfish were treated with high aggression and were killed more frequently. When discovered and confronted by the host, silverfish tended to escape and were chased aggressively, whereas spiders remained in contact with the confronting host ant until aggression ceased. Thus, spiders relied less on chemical mimicry but were nevertheless accepted more frequently by the host on the basis of behavioral mechanisms. These findings give insights into the fine tuning of social integration mechanisms and show the significance of qualitative differences among strategies.

Keywords

Ants Chemical mimicry Cuticular hydrocarbons Gamasomorpha maschwitzi Hymenoptera Formicidae Malayatelura ponerophila Myrmecophiles Nestmate recognition Silverfish Social integration Spiders 

Notes

Acknowledgments

We are grateful for the financial support from the DFG (Deutsche Forschungsgemeinschaft); Project WI 2646/3-1. We thank K. Staudt, K. Ortner, S. Schreyer, and A. Fenzel for assistance in the field.

Supplementary material

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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  • Volker Witte
    • 1
  • Susanne Foitzik
    • 1
  • Rosli Hashim
    • 2
  • Ulrich Maschwitz
    • 3
  • Stefan Schulz
    • 4
  1. 1.Department of Behavioral EcologyLudwig-Maximilians Universität MünchenPlaneggGermany
  2. 2.Department of Biological Sciences, Faculty of ScienceUniversity MalayaKuala LumpurMalaysia
  3. 3.Department of Biology and InformaticsJohann Wolfgang-Goethe UniversitätOberurselGermany
  4. 4.Department of Organic ChemistryTechnische Universität BraunschweigBraunschweigGermany

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