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Effect of fluid viscosity on the liquid-feeding flow phenomena of a female mosquito SCIE SCOPUS

Title
Effect of fluid viscosity on the liquid-feeding flow phenomena of a female mosquito
Authors
Bo Heum KimHo Jin HaEun Seok SeoLee, SJ
Date Issued
2013-03
Publisher
COMPANY OF BIOLOGISTS LTD
Abstract
Liquid-sucking phenomena by the two-pump system of female mosquitoes were investigated to understand the feeding mechanism. In most previous experimental studies on liquid-feeding insects, the net increase of mass was divided by the feeding time and fluid density to evaluate the intake rate. However, this weighting method is not so precise for mosquitoes, because they are too lightweight to measure the gain of mass accurately. In this study, the intake rate of female mosquitoes feeding on various sucrose solutions was estimated using a micro-particle image velocimetry technique. As the sucrose concentration increased from 1% to 50%, the intake rate decreased from 17.3 to 5.8 nls(-1). In addition, the temporal volume variations of the two pump chambers were estimated based on the velocity and acceleration information of the flow at the center of the food canal of the proboscis. One pumping period was divided into four elementary phases, which are related to the different operational modes of the two pumps. According to the hypothetical model established in this study, the phase shift (a) between the two pump chambers increases from 14 to 28. ms and the percentage of reverse flow to forward flow in a pumping period decreases from 7.6% to 1.7% with increasing viscosity. The developed analytical methodology thus aids in the study of an insect's feeding mechanism.
Keywords
liquid-feeding mosquito; micro-PIV; viscous liquid; intake rate; MECHANICS; PUMP; OPERATION; SUCKING
URI
https://oasis.postech.ac.kr/handle/2014.oak/15459
DOI
10.1242/JEB.072710
ISSN
0022-0949
Article Type
Article
Citation
JOURNAL OF EXPERIMENTAL BIOLOGY, vol. 216, no. 6, page. 952 - 959, 2013-03
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이상준LEE, SANG JOON
Dept of Mechanical Enginrg
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