The 7th International Congress of Neuroethology

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Michael R. O'Shea, F. Claire Rind,. Mandyam V. Srinivasan ... *University of Arizona, 611 Gould Simpson, Tucson, AZ 85721, USA; [email protected].
The 7th International Congress of Neuroethology August 8th to 13th, Nyborg, Denmark

PROGRAM AND ABSTRACTS

Triannual Congress of the International Society for Neuroethology (http://neuroethology.org)

Printed at the University of Southern Denmark, 2004 Front cover by Nacho Malter. Back cover: Copyright of Egeskov Estate.

Program Committee Sarah Bottjer (Chair, USA), Martin Giurfa (France), Barbara Beltz (USA), Elke Buschbeck (USA), Ken Catania (USA), Heather Eisthen (USA), Wulfila Gronenberg (USA), Ron Harris-Warrick (USA), Martin Heisenberg (Germany), Hans Hofmann (USA), Gwen Jacobs (USA), Ryohei Kanzaki (Japan), Hector Maldonado (Argentina), Alison Mercer (New Zealand), Cindy Moss (USA), ex-officio: Albert S. Feng.

Local Organizing Committee Axel Michelsen (Chair), Jakob Christensen-Dalsgaard , Lee Miller, Ole Næsbye Larsen, Annemarie Surlykke (Institute of Biology, University of Southern Denmark)

ISN Officers President: Albert S. Feng Treasurer: Sheryl Coombs, Secretary: Janis C. Weeks Past President: Malcolm Burrows President-Elect: Edward A. Kravitz

Councilors Horst Bleckmann, Catherine E. Carr, Allison J. Doupe, Martin Heisenberg, Martin Giurfa, Gwen A. Jacobs, Eric I. Knudsen, Ian A. Meinertzhagen, Alison R. Mercer, Michael R. O’Shea, F. Claire Rind, Mandyam V. Srinivasan, Harald Wolf, Harold Zakon The International Society for Neuroethology is grateful to the sponsors of this congress: University of Southern Denmark Danish Natural Science Research Council Danish National Research Foundation US-National Institute of Health US-National Science Foundation

POSTERS: 16. CENTRAL NERVOUS SYSTEM OF INVERTEBRATES PO253

Mushroom Bodies in Hymenoptera - Centers of Multisensory Convergence Wulfila Gronenberg*, German Octavio López Riquelme, Birgit Ehmer *University of Arizona, 611 Gould Simpson, Tucson, AZ 85721, USA; [email protected]  

In insects, the mushroom bodies control complex behavior and are involved in learning and memory. In Hymenoptera (wasps, bees, and ants) they receive multisensory input from the eyes, antennae and mouthparts. Direct pathways from the optic lobes to the mushroom bodies' collar region comprise several different classes of neurons that supply visual input to different layers of the mushroom body collar (6 in bees, 2-3 in ants) and represent different parts of the visual field and perhaps different aspect of visual stimuli. The mushroom bodies’ lip region receives olfactory input via projection neurons from the antennal lobe. In carpenter ants and leafcutting ants we find that the olfactory glomeruli in the antennal lobes are segregated into 6-7 glomeruli clusters. Projection neurons originating from different glomeruli clusters terminate in different regions of the mushroom bodies' lip region. We suggest that antennal lobe glomeruli clusters and mushroom body lip layers process segregated streams of odor information that may each be relevant in different biological contexts. The hymenopteran mushroom body thus represents a system in which many different sensory aspects are processed by as many parallel channels. A large number of combinations of sensory sub-modalities can thus be processed and compared at the output level, depending on which combinations of 'channels' the dendrites of particular output neurons probe. Supported by NSF (IBN 0083163)