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ARC Centre of Excellence for Coral Reef Studies
James Cook University Townsville
Queensland 4811 Australia

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Email: info@coralcoe.org.au

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Event

Colony size dependence in social conflicts and the underlying self-organization dynamics in ants

When

location

Who: Prof Kazuki Tsuji, University of the Ryukyus, Okinawa, Japan

Where: JCU Townsville NS 002 (TSV) and B1-031 (CNS)

When: Thursday, 29th October 2009 1.00pm – 2.00pm

ABSTRACT:

Recently Ohtsuki and Tsuji (2009) has proposed a new hypothesis on the mechanism of evolution of worker policing in social Hymenoptera, which assumes simultaneous operation of intracolonial conflicts over sex allocation, male parentage, and reproductive allocation.  A novel prediction of this model is that worker policing will depend on the stage of colony growth and under queen single mating strong worker policing will occur only at the ergonomic stage.  In this seminar I will talk about two issues related to this hypothesis.  First, I show data strongly supporting Ohtsuki and Tsuji’s prediction in the ponerine ant Diacamma sp.  Second, I suggest a proximate mechanism of colony size related behavioral regulation in this ant that is achieved though individual contacts.  This is a pioneering study revealing an explicit colony size “sensing” mechanism in social insects.

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Coral Reef Studies

ARC Centre of Excellence for Coral Reef Studies
James Cook University Townsville
Queensland 4811 Australia

Phone: 61 7 4781 4000
Email: info@coralcoe.org.au