Structures and functions of a mosquito’s pump system were investigated experimentally to clarify the mechanistic aspects of this optimized bio-pump. The three-dimensional strucure of the pump that was reconstructed by 1500 slices of the mosquito’s head was obtained using a histopathological method. The mosquito’s pump motion is predictable, and the pump volume can be estimated by the three-dimensional structural observations. The pump volume of the pumps, an oral cavity pump and pharynx pump, were estimated as being 7.92×10−4mm3, 63.3×10−4mm3 respectively. The frequency of the mosquito’s pumps was predicted to be 2.09–16.7 Hz, and was estimated using the pump volume and the volumetric blood flow rate. The motion of the mosquito’s pumps was visualized directly by an x-ray phase contrast imaging method using synchrotron radiation. It was found that the mosquito’s pumps (i.e., the oral cavity pump and the pharynx pump) worked alternately with a 4.23 Hz pump frequency. Moreover, the phase difference of each pump was almost 0.5, suggesting that the mosquito’s pumps worked in opposite phases. In addition, the mosquito’s pumps were found to work as a inline pump, which is suitable for increasing the pressure head of pump.
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ASME-JSME-KSME 2011 Joint Fluids Engineering Conference
July 24–29, 2011
Hamamatsu, Japan
Conference Sponsors:
- Fluids Engineering Division
ISBN:
978-0-7918-4440-3
PROCEEDINGS PAPER
Study of the Pump of a Mosquito
Kenji Kikuchi,
Kenji Kikuchi
Toyo University, Kawagoe, Saitama, Japan
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Osamu Mochizuki
Osamu Mochizuki
Toyo University, Kawagoe, Saitama, Japan
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Kenji Kikuchi
Toyo University, Kawagoe, Saitama, Japan
Osamu Mochizuki
Toyo University, Kawagoe, Saitama, Japan
Paper No:
AJK2011-19003, pp. 2001-2007; 7 pages
Published Online:
May 25, 2012
Citation
Kikuchi, K, & Mochizuki, O. "Study of the Pump of a Mosquito." Proceedings of the ASME-JSME-KSME 2011 Joint Fluids Engineering Conference. ASME-JSME-KSME 2011 Joint Fluids Engineering Conference: Volume 1, Symposia – Parts A, B, C, and D. Hamamatsu, Japan. July 24–29, 2011. pp. 2001-2007. ASME. https://doi.org/10.1115/AJK2011-19003
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