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J Comp Physiol A Neuroethol Sens Neural Behav Physiol

Title:		Use of bilateral information to determine the walking direction during orientation to a pheromone source in the silkmoth Bombyx mori
Author(s):		Takasaki T; Namiki S; Kanzaki R;
Address:		"Institute of Biological Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8572, Japan"
Journal Title:		J Comp Physiol A Neuroethol Sens Neural Behav Physiol
Year:		2012
Volume:		20120108
Issue:		4
Page Number:		295 - 307
DOI:		10.1007/s00359-011-0708-8
ISSN/ISBN:		1432-1351 (Electronic) 0340-7594 (Linking)
Abstract:		"Odor source localization is an important animal behavior. Male moths locate mates by tracking sex pheromone emitted by conspecific females. During this type of behavior, males exhibit a combination of upwind surge and zigzagging flight. Similarly, the male walking moth Bombyx mori responds to transient pheromone exposure with a surge in movement, followed by sustained zigzagging walking. The initial surge direction is known to be influenced by the pheromone input pattern. Here, we identified the sensory input patterns that determine the initial walking direction of males. We first quantified the stimulus by measuring electroantennogram values, which were used as a reference for subsequent tests. We used a brief stimulus pulse to examine the relationship between sensory stimulus patterns and the turning direction of initial surge. We found that the difference in input timing and intensity between left and right antennae affected the walking direction, indicating that B. mori integrate bilateral pheromone information during orientation behavior. When we tested pheromone stimulation for longer periods, turning behavior was suppressed, which was induced by stimulus cessation. This study contributes toward understanding efficient strategies for odor-source localization that is utilized by walking insects"
Keywords:		"Animals Arthropod Antennae/physiology Bombyx/*physiology Data Interpretation, Statistical Dose-Response Relationship, Drug Electrophysiological Phenomena Fatty Alcohols/pharmacology Female Functional Laterality/*physiology Male Odorants Orientation/*physi;"
Notes:		"MedlineTakasaki, Tetsuya Namiki, Shigehiro Kanzaki, Ryohei eng Research Support, Non-U.S. Gov't Germany 2012/01/10 J Comp Physiol A Neuroethol Sens Neural Behav Physiol. 2012 Apr; 198(4):295-307. doi: 10.1007/s00359-011-0708-8. Epub 2012 Jan 8"