Reclaiming the crown: Queen to worker conflict over reproduction in Aphaenogaster cockerelli

Adrian A. Smith, Berthold Hoelldobler, Juergen Liebig

Research output: Contribution to journalArticlepeer-review

14 Scopus citations


In many social taxa, reproductively dominant individuals sometimes use aggression to secure and maintain reproductive status. In the social insects, queen aggression towards subordinate individuals or workers has been documented and is predicted to occur only in species with a small colony size and a low level of queen-worker dimorphism. We report queen aggression towards reproductive workers in the ant species Aphaenogaster cockerelli, a species with a relatively large colony size and a high level of reproductive dimorphism. Through analysis of cuticular hydrocarbon profiles, we show that queens are aggressive only to reproductively active workers. Non-reproductive workers treated with a hydrocarbon typical for reproductives are attacked by workers but not by queens, which suggests different ways of recognition. We provide possible explanations of why queen aggression is observed in this species.

Original languageEnglish (US)
Pages (from-to)237-240
Number of pages4
Issue number3
StatePublished - Mar 2011


  • Aggression
  • Cuticular hydrocarbons
  • Policing
  • Queen policing
  • Reproductive regulation

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics


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