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Liquid-intake flow around the tip of butterfly proboscis SCIE SCOPUS

Title
Liquid-intake flow around the tip of butterfly proboscis
Authors
Lee, SJLee, SCKim, BH
Date Issued
2014-05-07
Publisher
ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD
Abstract
Butterflies drink liquid through a slender proboscis using a large pressure gradient induced by the systaltic operation of a muscular pump inside their head. Although the proboscis is a naturally well-designed coiled micro conduit for liquid uptake and deployment, it has been regarded as a simple straw connected to the muscular pump. There are few studies on the transport of liquid food in the proboscis of a liquid-feeding butterfly. To understand the liquid-feeding mechanism in the proboscis of butterflies, the intake flow around the tip of the proboscis was investigated in detail. In this study, the intake flow was quantitatively visualized using a micro-PIV (particle image velocimetry) velocity field measurement technique. As a result, the liquid-feeding process consists of an intake phase, an ejection phase and a rest phase. When butterflies drink pooled liquid, the liquid is not sucked into the apical tip of the proboscis, but into the dorsal linkage aligned longitudinally along the proboscis. To analyze main characteristics of the intake flow around a butterfly proboscis, a theoretical model was established by assuming that liquid is sucked into a line sink whose suction rate linearly decreases proximally. In addition, the intake flow around the tip of a female mosquito's proboscis which has a distinct terminal opening was also visualized and modeled for comparison. The present results would be helpful to understand the liquid-feeding mechanism of a butterfly. (C) 2014 Elsevier Ltd. All rights reserved.
Keywords
Biofluidics; Suction flow; Foraging; Butterflies; FUNCTIONAL-MORPHOLOGY; NECTAR CONCENTRATION; LEPIDOPTERA INSECTA; ADULT LEPIDOPTERA; FLUID-MECHANICS; RATES; EVOLUTION; MODEL
URI
https://oasis.postech.ac.kr/handle/2014.oak/14199
DOI
10.1016/J.JTBI.2014.01.042
ISSN
0022-5193
Article Type
Article
Citation
JOURNAL OF THEORETICAL BIOLOGY, vol. 348, page. 113 - 121, 2014-05-07
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이상준LEE, SANG JOON
Dept of Mechanical Enginrg
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