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Pheromone Detection by a Pheromone Emitter : A Small Sex Pheromone-Specific Processing System in the Female American Cockroach
Title: | Pheromone Detection by a Pheromone Emitter : A Small Sex Pheromone-Specific Processing System in the Female American Cockroach |
Authors: | Nishino, Hiroshi Browse this author →KAKEN DB | Iwasaki, Masazumi Browse this author | Mizunami, Makoto Browse this author |
Keywords: | insects | macroglomerular complex | pheromonal communication | projection neuron | sexual dimorphism |
Issue Date: | Mar-2011 |
Publisher: | Oxford University Press |
Journal Title: | Chemical Senses |
Volume: | 36 |
Issue: | 3 |
Start Page: | 261 |
End Page: | 270 |
Publisher DOI: | 10.1093/chemse/bjq122 |
PMID: | 21098584 |
Abstract: | Many animals depend on pheromone communication for successful mating. Sex pheromone in insects is usually released by females to attract males. In American cockroaches, the largest glomerulus (B-glomerulus) in the male antennal lobe (first-order olfactory centre) processes the major component of sex pheromone. Using intracellular recordings combined with fine neuroanatomical techniques, we provide evidence that the female homolog of the male B-glomerulus also acts as a sex pheromone-specific detector. Whereas ordinary glomeruli that process normal environmental odors are innervated by single PNs, the B-glomerulus in both sexes is innervated by multiple PNs, one of which possesses a thicker axon, termed here B-PN. Both soma size and axon diameter were smaller on B-PNs from females compared to B-PNs from males. The female B-PNs also produce fewer terminal arborizations in the protocerebrum than male B-PNs. Termination fields in the lateral protocerebrum of the female B-PN are mostly segregated from those formed by other uniglomerular PNs innervating ordinary glomeruli. Female B-PN activity was greatest in response to sex pheromone but lower than that in the male B-PN. This specific detection system suggests that sex pheromone affects the behavior and/or endocrine system of female cockroaches. |
Rights: | This is a pre-copy-editing, author-produced PDF of an article accepted for publication in Chemical Senses following peer review. The definitive publisher-authenticated version Chem. Senses (2011) 36 (3): 261-270 is available online at: http://chemse.oxfordjournals.org/content/36/3/261 |
Type: | article (author version) |
URI: | http://hdl.handle.net/2115/47492 |
Appears in Collections: | 電子科学研究所 (Research Institute for Electronic Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 西野 浩史
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