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Gustatory sensing mechanism coding for multiple oviposition stimulants in the swallowtail butterfly, papilio xuthus.
MedLine Citation:
PMID:  23325231     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
The swallowtail butterfly, Papilio xuthus, selectively uses a limited number of plants in the Rutaceae family. The butterfly detects oviposition stimulants in leaves through foreleg chemosensilla and requires a specific combination of multiple oviposition stimulants to lay eggs on the leaf of its host plants. In this study, we sought to elucidate the mechanism underlying the regulation of oviposition behavior by multiple oviposition stimulants. We classified chemosensilla on the tarsomere of the foreleg into three types (L1, L2, and S) according to their size and response to oviposition stimulants and general tastants. The L1 was more abundant in females than in males and responded preferentially to oviposition stimulants. Both L2 and S were common to both sexes and responded to general tastants. We found that five oviposition stimulants (synephrine, stachydrine, 5-hydroxy-Nω-methyltryptamine, narirutin, and chiro-inositol) elicited spikes from three specific gustatory receptor neurons (GRNs) within L1 sensilla. These three GRNs responded to a mixture of the five stimulants at concentrations equivalent to those found in the whole-leaf extract of citrus, and the mixture induced oviposition at levels comparable to whole-leaf extract. We propose that oviposition is triggered by the firing of three specific GRNs in L1 sensilla that encode the chemical signatures of multiple oviposition stimulants.
Authors:
Masasuke Ryuda; Delphine Calas-List; Ayumi Yamada; Frédéric Marion-Poll; Hiroshi Yoshikawa; Teiichi Tanimura; Katsuhisa Ozaki
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Journal of neuroscience : the official journal of the Society for Neuroscience     Volume:  33     ISSN:  1529-2401     ISO Abbreviation:  J. Neurosci.     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2013-01-17     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8102140     Medline TA:  J Neurosci     Country:  United States    
Other Details:
Languages:  eng     Pagination:  914-24     Citation Subset:  IM    
Affiliation:
JT Biohistory Research Hall, Takatsuki Osaka, 569-1125, Japan, Institut national de la recherche agronomique, UMR 1272, Physiologie de l'Insecte: Signalisation et Communication, 78026 Versailles, France, Graduate School of Science, Osaka University, Toyonaka, Osaka, 560-0043, Japan, AgroParisTech, Département Sciences de la Vie et Santé, 75231 Paris Cedex 05, France, and Department of Biology, Graduate School of Sciences, Kyushu University, Hakozaki, Fukuoka, 812-8581, Japan.
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