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Visualising the water flow in a breathing carp using NMRi
Van Den Berg, C.; Van Dusschoten, D.; Van As, H.; Terlouw, A.; Schaafsma, T.J.; Osse, J.W.M. (1995). Visualising the water flow in a breathing carp using NMRi. Neth. J. Zool. 45(1-3): 338-346
In: Netherlands Journal of Zoology. E.J. Brill: Leiden. ISSN 0028-2960, more
Peer reviewed article  

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Keyword
    Fresh water

Authors  Top 
  • Van Den Berg, C.
  • Van Dusschoten, D.
  • Van As, H.
  • Terlouw, A.
  • Schaafsma, T.J.
  • Osse, J.W.M.

Abstract
    The study of water flow inside the fish mouth and opercular has been hampered by the lack of a non-invasive measuring device. Measurements of the water flow during breathing of a carp are presented here, using a non-invasive technique, Nuclear Magnetic Resonance imaging (NMRi). Using NMRi, velocity prfiles in a whole slice of the fish can be measured at once. The present results, which represents the average flow pattern during a breathing cycle, confirm literature data of an elongated volume of moving water in front of the mouth of the fish. Furthermore, it is observed that in the narrow spaces between the hemibranchs the water flow remains fast. Suggestions are givven for impovement of the experimental set-up, such that more detailed and complete data of the flow in the fish mouth and opercular cavities may be obtained

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