Journal of the Korean Society of Visualization (한국가시화정보학회지)

The Korean Society of Visualization (한국가시화정보학회)
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In vivo visualization of liquid-feeding phenomena of a butterfly

나비 펌프의 구조와 동적 거동의 in vivo 가시화

  • 이승철 (포항공과대학교 기계공학과) ;
  • 김보흠 (포항공과대학교 생체유체연구단) ;
  • 이상준 (포항공과대학교 기계공학과)
  • Received : 2011.12.14
  • Accepted : 2011.12.27
  • Published : 2011.12.31
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Abstract

Butterflies have been known to suck viscous liquids through a long, cylindrical proboscis using the large pressure difference formulated by the cyclic expansion and contraction of a muscular pump located inside their head. However, there are few studies on the liquid-feeding phenomena in a live butterfly, because it is hard to observe the internal morphological structures under in vivo condition. In this study, the dynamic motion of the pump system in a butterfly was in vivo visualized using synchrotron X-ray micro-imaging technique to analyze the liquid-feeding mechanism. The period of the liquid-feeding process is about 0.3sec. The expansion stage is about two times larger than the contraction stage in one cycle. The cyclic variation of pump volume generate large negative suction pressure and the pressure difference inside the long proboscis of a butterfly is estimated to be larger than 1atm.

Keywords

References

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