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Naturwissenschaften

, Volume 96, Issue 2, pp 315–319 | Cite as

Scent of a queen—cuticular hydrocarbons specific for female reproductives in lower termites

  • Tobias WeilEmail author
  • Katharina Hoffmann
  • Johannes Kroiss
  • Erhard Strohm
  • Judith Korb
Short Communication

Abstract

In social insects, it is assumed that signals of the queen inform nestmates about her reproductive status. Thus, workers forego their own reproduction if the queen signals high fertility. In hemimetabolous termites, little is known about reproductive inhibition, but evidence exists for a royal-pair control. Workers of lower termites exhibit a high developmental flexibility and are potentially able to become reproductives, but the presence of a fertile reproductive restrains them from reaching sexual maturity. The nature of this control, however, remains unknown. Here, we report on qualitative differences in cuticular hydrocarbon profiles between queens and workers of the basal drywood termite Cryptotermes secundus. Queens were characterized by a shift to long-chained and branched hydrocarbons. Most remarkably, similar chemical patterns are regarded as fertility cues of reproductives in social Hymenoptera. This might suggest that both groups of social insects convergently evolved similar chemical signatures. The present study provides deeper insights into how termites might have socially exploited these signatures from sexual communication in their cockroach-like ancestor.

Keywords

Termites Cuticular hydrocarbons Fertility signals Chemical communication Queen signal 

Notes

Acknowledgments

We would like to thank Henriette Seichter for her help collecting termites. Parks and Wildlife Commission and Environment Australia gave permission to collect and export the termites. The experiments comply with the current laws of the country in which they were performed. This work was supported by a Deutsche Forschungsgemeinschaft (DFG) grant to Michael Rehli and Judith Korb.

Supplementary material

114_2008_475_MOESM1_ESM.doc (52 kb)
Supplementary Table 1 Comparison of the 25 caste-specific compounds (according to MCA analysis) using Mann–Whitney U tests. (DOC 52.5KB)

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Copyright information

© Springer-Verlag 2008

Authors and Affiliations

  • Tobias Weil
    • 1
    • 3
    Email author
  • Katharina Hoffmann
    • 2
  • Johannes Kroiss
    • 1
  • Erhard Strohm
    • 1
  • Judith Korb
    • 2
  1. 1.Biology IUniversity of RegensburgRegensburgGermany
  2. 2.Behavioral BiologyUniversity of OsnabrueckOsnabrueckGermany
  3. 3.Department of Hematology and OncologyUniversity HospitalRegensburgGermany

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