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Proc Natl Acad Sci U S A

Title:		Adaptation of antennal neurons in moths is associated with cessation of pheromone-mediated upwind flight
Author(s):		Baker TC; Hansson BS; Lofstedt C; Lofqvist J;
Address:		"Department of Animal Ecology, University of Lund, Sweden"
Journal Title:		Proc Natl Acad Sci U S A
Year:		1988
Volume:		85
Issue:		24
Page Number:		9826 - 9830
DOI:		10.1073/pnas.85.24.9826
ISSN/ISBN:		0027-8424 (Print) 1091-6490 (Electronic) 0027-8424 (Linking)
Abstract:		"A wind-borne plume of sex pheromone from a female moth or a synthetic source has a fine, filamentous structure that creates steep and rapid fluctuations in concentration for a male moth flying up the plume's axis. The firing rates from single antennal neurons on Agrotis segetum antennae decreased to nearly zero within seconds after the antennae were placed in a pheromone plume 70 cm downwind of a high-concentration source known from previous studies to cause in-flight arrestment of upwind progress. In a separate experiment, the fluctuating output from chilled neurons on Grapholita molesta antennae became attenuated in response to repetitive, experimentally delivered pheromone pulses. The attenuation was correlated with a previously reported higher percentage of in-flight arrestment exhibited by moths flying at cooler compared to warmer temperatures. These results indicate that two peripheral processes related to excessive concentration, complete adaptation of antennal neurons, or merely the attenuation of fluctuations in burst frequency, are important determinants of when upwind progress by a moth flying in a pheromone plume stops and changes to station keeping. Also, adaptation and attenuation may affect the sensation of blend quality by preferentially affecting cells sensitive to the most abundant components in airborne pheromone blends"
Keywords:		"Action Potentials *Adaptation, Physiological Animals Electrophysiology *Flight, Animal Lepidoptera/*physiology Male Moths/*physiology Neurons/*physiology Pheromones/*pharmacology;"
Notes:		"MedlineBaker, T C Hansson, B S Lofstedt, C Lofqvist, J eng Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. 1988/12/01 Proc Natl Acad Sci U S A. 1988 Dec; 85(24):9826-30. doi: 10.1073/pnas.85.24.9826"