ID | 32992 |
フルテキストURL | |
著者 |
Kumashiro, Mikihiko
Department of Biology, Faculty of Science, Okayama University
Sakai, Masaki
Department of Biology, Faculty of Science, Okayama University
|
抄録 | To understand the neural mechanisms of reproductive behaviour in the male cricket, we identified motor neurones innervating the muscles in each genital organ by backfilling
with cobalt/nickel and recording their extracellular spike activity from nerve bundles of the terminal abdominal ganglion during tethered copulation and spermatophore formation. During tethered copulation, at least two
motor neurones innervating two ipsilateral muscles were activated during projection of the guiding rod of the phallic dorsal pouch. Only one motor neurone, innervating four ipsilateral muscles of the dorsal pouch, was responsible for
spermatophore extrusion by deforming the dorsal pouch. For spermatophore transfer, three motor neurones, singly innervating three epiphallus muscles, played a major role in opening passages for haemolymph to enter the ventral lobes and median pouch by bending the epiphallus. Two
ventral lobe and 3–5 median pouch motor neurones seemed to play a role in expanding or folding the two membranous structures by relaxing or contracting their muscle fibres. After spermatophore transfer, most of the genital motor
neurones exhibited a rhythmic burst of action potentials causing movement of the phallic complex coupled with strong abdominal contractions. For spermatophore formation, the genital motor neurones began to accelerate
their rhythmic bursts approximately 30 s prior to
subgenital plate opening and then changed their activity to tonic bursting or silence. The results have allowed us to describe the timing of the onset and termination of genital muscle contraction more precisely than before, to examine the neural mechanisms of copulatory motor control and to speculate on the neural organization of the reproductive centre for spermatophore extrusion and protrusion.
|
キーワード | male
cricket
Gryllus bimaculatus
reproductive
behaviour
neural activity
spermatophore extrusion
spermatophore
protrusion.
|
備考 | Published with permission from the copyright holder. This is the institute's copy, as published in The Journal of Experimental Biology, March 2001, Volume 204, Issue 6, Pages 1139-1152.
Publisher URL:http://jeb.biologists.org/cgi/reprint/204/6/1139 Copyright © 2001 The Company of Biologists Limited. All rights reserved. |
発行日 | 2001-03
|
出版物タイトル |
The Journal of Experimental Biology
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巻 | 204巻
|
号 | 6号
|
出版者 | The Company of Biologists Limited
|
開始ページ | 1139
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終了ページ | 1152
|
ISSN | 0022-0949
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NCID | AA00697490
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資料タイプ |
学術雑誌論文
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言語 |
英語
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著作権者 | The Company of Biologists Limited
|
論文のバージョン | publisher
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査読 |
有り
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PubMed ID | |
Web of Science KeyUT | |
Submission Path | biology_general/13
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