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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. |
Rights: | http://creativecommons.org/licenses/by/3.0/ |
Type: | article |
URI: | http://hdl.handle.net/2115/56814 |
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: 國田 樹
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