Friday, 4 August 2006: 1:30 PM-6:00 PM
Executive (Omni Shoreham Hotel)
Symposium 26: The myth of the sterile worker: A reconsideration of worker reproductive options in social Hymenoptera without morphological castes
There exists an important taxonomic divide in the study of worker reproductive options. Among primitively social insects, especially sweat bees, workers pursue a variety of reproductive options that include sterile altruism, but also include queen replacement, queen supersedure, oviposition of eggs in queen-right nests, and maternity of both diploid and haploid offpsring. However, these facts are not widely appreciated in the wider social insect world. Indeed, some recent publications regard worker reproduction and worker selfishness in some taxa as quite novel. This symposium will address the issue of worker reproductive behaviour and reproductive options in a variety of taxa, including not only the primitively eusocial Hymenoptera, but also social Hymenoptera with morphological castes.
Organizers:Miriam H. Richards
Laurence Packer
1:30 PMPolicing in the clonal ant Platythyrea punctata
Katrin Kellner, Elisabeth Brunner, Juergen Heinze
1:50 PMPotential queens in two tropical wasps without morphological castes
Raghavendra Gadagkar, Anindita Bhadra, Sujata Kardile, Annagiri Sumana
2:10 PMCaste in neotropical swarm-founding wasps: new perspectives refute traditional models
Fernando B. Noll, John W. Wenzel
2:30 PMWhat are castes to a reproductively flexible social insect?
Charles W. Gunnels IV
2:50 PMWorker strategies in social sweat bees: the ubiquity of worker reproduction
Miriam H. Richards
3:10 PMThe "Australian Enigma" Revisited
Penelope A. Kukuk, Forbes Stephen H.
3:30 PMBreak
4:00 PMSocial competition, body size, and parasitism influence caste expression at the threshold of eusociality
Adam R. Smith, William T. Wcislo, Sean O'Donnell
4:20 PMNever mind the robes: the persistence of facultative societies in allodapine bees
Simon M. Tierney, Michael P. Schwarz
4:40 PMWorkers that don't work in Xylocopa virginica
Sean M. Prager
5:00 PMWorkers of the lower termite Cryptotermes secundus are not altruists, but hopeful reproductives
Judith Korb
5:20 PMA direct fitness route to a reproductive division of labour in the social thrips
Tom Chapman
5:40 PMWho is reproducing in social shrimp?
Eva Toth, J. Emmett Duffy
Sponsor:Invited Symposia Presentations

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