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Behavioral Ecology and Sociobiology

, Volume 69, Issue 8, pp 1365–1375 | Cite as

Diversity in identity: behavioral flexibility, dominance, and age polyethism in a clonal ant

  • Abel BernadouEmail author
  • Josefine Busch
  • Jürgen Heinze
Original Paper

Abstract

In many species of social insects, division of non-reproductive labor is to some extent affected by age, in that younger individuals engage in activities in the nest, whereas older individuals forage. While the link between age and task is less robust than originally thought, the transition from nursing to foraging is associated with large changes in gene expression, neuroanatomy, and physiology and therefore seems largely irreversible. Here, we investigate division of labor in the thelytokous ant Platythyrea punctata. Since it forms clonal colonies, it is an ideal model to investigate the behavioral flexibility of individuals and the proximate mechanisms underlying division of labor, while avoiding confounding factors, such as variation in genotype or morphology. We found that nurses and foragers of P. punctata differ in residual life span, fat content, fecundity, and the propensity to engage in dominance interactions. However, age-based division of labor appears to be flexible: foragers can revert to nursing and egg laying, even though they appear less fecund than original nurse workers. Interestingly, the transition from foraging to nursing seemed to slow down aging and senescence.

Keywords

Ponerinae Division of labor Behavioral reversion Dominance hierarchy Senescence 

Notes

Acknowledgments

The study was supported by DFG (He 1623/33). We thank Bartosz Walter, Marion Füßl, Tina Wanke, Katrin Kellner, and Jon N. Seal for their help in collecting the ants, Bartosz Walter and Bert Rivera Marchand for their help with obtaining permits. Research in Puerto Rico was permitted by USDA Forest Service and Departamento de Recursos Naturales y Ambientales, 2012-IC-036.

We thank B. Markó and E. Csata for fruitful discussions on statistical analysis, O. Rueppell, T. Czaczkes, and two referees for constructive comments on previous versions of this paper.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2015

Authors and Affiliations

  1. 1.Zoology/Evolutionary BiologyUniversität RegensburgRegensburgGermany

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