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ID 15348
本文ファイル
著者
Tomishige, Masahiko
Itoh, Yasuhiro
Shibata, Naho
Kosaka, Toshikazu
Hosoya, Hiroshi
Tanimoto, Yoshifumi
キーワード
Strong Magnetic Field
Swimming Behavior
Paramecium caudatum
Protists, Susceptibility Anisotropy
Magnetic Orientation
NDC
生物科学・一般生物学
抄録(英)
Effect of horizontal strong static magnetic field on swimming behavior of Paramecium caudatum was studied by using a superconducting magnet. Around a center of a round vessel, random swimming at 0 T and aligned swimming parallel to the magnetic field (MF) of 8 T were observed. Near a wall of the vessel, however, swimming round and round along the wall at 0 T and aligned swimming of turning at right angles upon collision with the wall, which was remarkable around 1~4 T, were detected. It was experimentally revealed that the former MF-induced parallel swimming at the vessel center was caused physicochemically by the parallel magnetic orientation of the cell itself. From magnetic field dependence of the extent of the orientation, the magnetic susceptibility anisotropy (χ‖-χ⊥) was first obtained to be 3.4×10-23 emu cell-1 at 298 K for Paramecium caudatum. The orientation of the cell was considered to result from the magnetic orientation of the cell membrane. On the other hand, although mechanisms of the latter swimming near the vessel wall regardless of the absence and presence of the magnetic field are unclear at present, these experimental results indicate that whether the cell exists near the wall alters magnetic field effect on the swimming in the horizontal magnetic field.
掲載誌名
Molecular Physics
104巻
10-11号
開始ページ
1659
終了ページ
1666
出版年月日
2006-05-20
出版者
Taylar & Francis
作成年月日
2006-05-20
ISSN
0026-8976
NCID
出版者DOI
言語
英語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
author
権利情報
Copyright (c) 2006 Taylar & Francis. This is an electronic version of an article published in "Molecular Physics Vol.104 No.10-11 pp.1659-1666" Molecular Physics is available at: http://dx.doi.org/10.1080/00268970600643556
関連情報URL(IsVersionOf)
http://dx.doi.org/10.1080/00268970600643556
部局名
理学研究科