Dummies versus Air Puffs : Efficient Stimulus Delivery for Low-Volatile Odors
Dummies versus Air Puffs : Efficient Stimulus Delivery for Low-Volatile Odors
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2010
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Chemical Senses ; 35 (2010), 4. - pp. 323-333. - ISSN 0379-864X. - eISSN 1464-3553
Abstract
Aiming to unravel how animals perceive odors, a variety of neurophysiological techniques are used today. For olfactory stimulation, odors are commonly incorporated into a constant airstream that carries odor molecules to the receptor organ (air-delivered stimulation). Such odor delivery works well for odors of high volatility (naturally effective over long distances) but less or not at all for low-volatile odors (usually only received at short range). We developed a new odor stimulation technique especially suited for low-volatile odors and compared it with conventional air-delivered stimulation using 2 neurophysiological approaches. Odor-loaded dummies were moved into close vicinity of the receptor organs on the antenna of the Florida carpenter ant Camponotus floridanus (dummy-delivered stimulation). Neuronal activity was monitored either at receptor neuron level using electroantennography or in the first olfactory neuropile, the antennal lobes, using calcium imaging. We tested 3 odors of different volatility: C. floridanus’ highly volatile alarm pheromone undecane, its low-volatile trail pheromone nerolic acid, and an even less volatile, behaviorally active C23 alkene, cis-9-tricosene. For low-volatile odors, dummy-delivered stimulation was particularly efficient. We conclude that dummy-delivered stimulation is advantageous compared to the commonly used air-delivered stimulation when studying an animal’s detection and processing of low-volatile odors.
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570 Biosciences, Biology
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ants,calcium imaging,Camponotus floridanus,electroantennography,neurophysiology,odor stimulation
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BRANDSTAETTER, Andreas Simon, Wolfgang RÖSSLER, Christoph KLEINEIDAM, 2010. Dummies versus Air Puffs : Efficient Stimulus Delivery for Low-Volatile Odors. In: Chemical Senses. 35(4), pp. 323-333. ISSN 0379-864X. eISSN 1464-3553. Available under: doi: 10.1093/chemse/bjq022BibTex
@article{Brandstaetter2010Dummi-13564, year={2010}, doi={10.1093/chemse/bjq022}, title={Dummies versus Air Puffs : Efficient Stimulus Delivery for Low-Volatile Odors}, number={4}, volume={35}, issn={0379-864X}, journal={Chemical Senses}, pages={323--333}, author={Brandstaetter, Andreas Simon and Rössler, Wolfgang and Kleineidam, Christoph} }
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