Document Detail


The mechanics of flight in the hawkmoth Manduca sexta. I. Kinematics of hovering and forward flight.
MedLine Citation:
PMID:  9418029     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
High-speed videography was used to record sequences of individual hawkmoths in free flight over a range of speeds from hovering to 5 ms-1. At each speed, three successive wingbeats were subjected to a detailed analysis of the body and wingtip kinematics and of the associated time course of wing rotation. Results are presented for one male and two female moths. The clearest kinematic trends accompanying increases in forward speed were an increase in stroke plane angle and a decrease in body angle. The latter may have resulted from a slight dorsal shift in the area swept by the wings as the supination position became less ventral with increasing speed. These trends were most pronounced between hovering and 3 ms-1, and the changes were gradual; there was no distinct gait change of the kind observed in some vertebrate fliers. The wing rotated as two functional sections: the hindwing and the portion of the forewing with which it is in contact, and the distal half of the forewing. The latter displayed greater fluctuation in the angle of rotation, especially at the lower speeds. As forward speed increased, the discrepancy between the rotation angles of the two halfstrokes, and of the two wing sections, became smaller. The downstroke wing torsion was set early in the halfstroke and then held constant during the translational phase.
Authors:
A P Willmott; C P Ellington
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The Journal of experimental biology     Volume:  200     ISSN:  0022-0949     ISO Abbreviation:  J. Exp. Biol.     Publication Date:  1997 Nov 
Date Detail:
Created Date:  1998-01-20     Completed Date:  1998-01-20     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0243705     Medline TA:  J Exp Biol     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  2705-22     Citation Subset:  IM    
Affiliation:
Department of Zoology, University of Cambridge, UK. sandy@kawachi.jst.go.jp
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MeSH Terms
Descriptor/Qualifier:
Animals
Biomechanics
Female
Flight, Animal*
Male
Manduca / physiology*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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