Postural control under clinorotation in upside-down catfish, Synodontis nigriventris.
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- Ohnishil Ken
- Department of Physiology, Nara Medical University, Kashihara, Nara 634, Japan
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- Takahashi Akihisa
- Department of Biology, Nara Medical University, Kashihara, Nara 634, Japan
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- Koyama Masato
- Senior Research Engineer Frontiers Joint Research Program Department, Japan Space Utilization Promotion Center, Nishiwaseda, Shinjuku-ku, Tokyo 169, Japan
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- Ohnishi Takeo
- Department of Biology, Nara Medical University, Kashihara, Nara 634, Japan
Bibliographic Information
- Other Title
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- Postural control under clinorotation in
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Abstract
The upside-down catfish Synodontis nigriventris has a unique habit of swimming and resting upside-down in free water. This behavior leads to the assumption that the catfish has a specific gravity information processing system. We examined the postural control behaviors in the catfish under clinorotation which is usually used for producing pseudo-microgravity. Synodontis nigriventris kept its body posture at a stable area of the rotated flask in which the catfish was kept, when it was clinorotated at the rate of 60 rpm. In contrast to Synodontis nigriventris, a related species, Corydoras paleatus, did not show such steady postural control. When the flask was rotated at a lower rate of 30 rpm or a higher rate of 100 rpm, Synodontis nigriventris as well as Corydoras paleatus showed a considerable disturbed control of body posture. In this condition, they were frequently rotated with the flask. These findings suggest that Synodontis nigriventris has a high ability to keep upside-down posture and the gravity sensation in this catfish is likely to contribute to its different postural control from that of many other fishes.
Journal
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- Biological Sciences in Space
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Biological Sciences in Space 10 (4), 252-258, 1996
Japanese Society for Biological Sciences in Space
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Details 詳細情報について
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- CRID
- 1390001204433264896
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- NII Article ID
- 130004450417
- 30016942291
- 10002856472
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- NII Book ID
- AN10164806
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- COI
- 1:STN:280:DC%2BD3MnlvV2itg%3D%3D
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- ISSN
- 1349967X
- 09149201
- http://id.crossref.org/issn/1349967X
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- NDL BIB ID
- 4195107
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- PubMed
- 11540346
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
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- Abstract License Flag
- Disallowed