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Attempts to retreat from a dead-ended long capillary by backward swimming in Paramecium

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Title: Attempts to retreat from a dead-ended long capillary by backward swimming in Paramecium
Authors: Kunita, Itsuki Browse this author
Kuroda, Shigeru Browse this author →ORCID
Ohki, Kaito Browse this author
Nakagaki, Toshiyuki Browse this author →KAKEN DB
Keywords: Paramecium
long-term backward swimming
avoidance behavior
membrane potential
Ca2+ current
Hodgkin–Huxley-type model
Issue Date: 11-Jun-2014
Publisher: Frontiers
Journal Title: Frontiers in microbiology
Volume: 5
Start Page: 270-1
End Page: 270-8
Publisher DOI: 10.3389/fmicb.2014.00270
PMID: 24966852
Abstract: We have observed how the ciliate Paramecium attempts to retreat from the dead-end of a long capillary that is too narrow for turning. After many trial-and-error episodes of short-term backward swimming (SBS), which is the conventional avoidance behavior exhibited in free swimming when an obstacle is faced, long-term backward swimming (LBS) that lasted five to ten times longer was developed. LBS may have a beneficial effect for complete withdrawal from the capillary space, although in our experiment it was impossible for the organism to do so due to the capillary length. In order to identify a physically possible mechanism for LBS, we propose model equations for the membrane potential of Hodgkin–Huxley type, which describe the control of ciliary movement. The physiological implications and physical mechanism of the development of LBS are discussed.
Type: article
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)

Submitter: 國田 樹

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