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Multiphasic on/off pheromone signalling in moths as neural correlates of a search strategy

by Anton, Sylvia , Martinez, Dominique, D , Chaffiol, Antoine, A , Récepteurs et Canaux Ioniques Membranaires (RCIM) ; Université d'Angers (UA)-Institut National de la Recherche Agronomique (INRA) , Laboratoire Lorrain de Recherche en Informatique et ses Applications (LORIA) ; Institut National de Recherche en Informatique et en Automatique (Inria)-CentraleSupélec-Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS) , Lucas, Philippe, P , Voges, Nicole, N , Pherosys (grant ANR-BBSRC BSYS-006) ; Pherotaxis (grant ANR-10-BINF-05) ; Neurochem (European Bio-ICT convergence project grant FP7-216916) , Gu, Yuqiao, Y , Physiologie de l'Insecte : Signalisation et Communication (PISC) ; Institut National de la Recherche Agronomique (INRA)-Université Pierre et Marie Curie - Paris 6 (UPMC)-AgroParisTech

in Agricultural sciences / Life Sciences

2013

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Multiphasic on/off pheromone signalling in moths as neural correlates of a search strategy

in Agricultural sciences / Life Sciences

2013

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Multiphasic on/off pheromone signalling in moths as neural correlates of a search strategy

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2013

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Journal Article

Multiphasic on/off pheromone signalling in moths as neural correlates of a search strategy

Anton, Sylvia,

Martinez, Dominique, D,

Chaffiol, Antoine, A,

Récepteurs et Canaux Ioniques Membranaires (RCIM) ; Université d'Angers (UA)-Institut National de la Recherche Agronomique (INRA),

Laboratoire Lorrain de Recherche en Informatique et ses Applications (LORIA) ; Institut National de Recherche en Informatique et en Automatique (Inria)-CentraleSupélec-Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS),

Lucas, Philippe, P,

Voges, Nicole, N,

Pherosys (grant ANR-BBSRC BSYS-006) ; Pherotaxis (grant ANR-10-BINF-05) ; Neurochem (European Bio-ICT convergence project grant FP7-216916),

Gu, Yuqiao, Y,

Physiologie de l'Insecte : Signalisation et Communication (PISC) ; Institut National de la Recherche Agronomique (INRA)-Université Pierre et Marie Curie - Paris 6 (UPMC)-AgroParisTech

2013

Overview

Insects and robots searching for odour sources in turbulent plumes face the same problem: the random nature of mixing causes fluctuations and intermittency in perception. Pheromone-tracking male moths appear to deal with discontinuous flows of information by surging upwind, upon sensing a pheromone patch, and casting crosswind, upon losing the plume. Using a combination of neurophysiological recordings, computational modelling and experiments with a cyborg, we propose a neuronal mechanism that promotes a behavioural switch between surge and casting. We show how multiphasic On/Off pheromone-sensitive neurons may guide action selection based on signalling presence or loss of the pheromone. A Hodgkin-Huxley-type neuron model with a small-conductance calcium-activated potassium (SK) channel reproduces physiological On/Off responses. Using this model as a command neuron and the antennae of tethered moths as pheromone sensors, we demonstrate the efficiency of multiphasic patterning in driving a robotic searcher toward the source. Taken together, our results suggest that multiphasic On/Off responses may mediate olfactory navigation and that SK channels may account for these responses.

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Publisher

CCSD,Public Library of Science

Subject

Agricultural sciences

/ Life Sciences

ISBN

0003179072000