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


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タイトル: Attempts to retreat from a dead-ended long capillary by backward swimming in Paramecium
著者: Kunita, Itsuki 著作を一覧する
Kuroda, Shigeru 著作を一覧する
Ohki, Kaito 著作を一覧する
Nakagaki, Toshiyuki 著作を一覧する
キーワード: Paramecium
long-term backward swimming
avoidance behavior
membrane potential
Ca2+ current
Hodgkin–Huxley-type model
発行日: 2014年 6月11日
出版者: Frontiers
誌名: Frontiers in microbiology
巻: 5
開始ページ: 270-1
終了ページ: 270-8
出版社 DOI: 10.3389/fmicb.2014.00270
抄録: 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.
資料タイプ: article
出現コレクション:雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

提供者: 國田 樹


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