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Dynamics of in vivo power output and efficiency of Nasonia asynchronous flight muscle

Paper ID Volume ID Publish Year Pages File Format Full-Text
25439 43574 2006 15 PDF Available
Title
Dynamics of in vivo power output and efficiency of Nasonia asynchronous flight muscle
Abstract

By simultaneously measuring aerodynamic performance, wing kinematics, and metabolic activity, we have estimated the in vivo limits of mechanical power production and efficiency of the asynchronous flight muscle (IFM) in three species of ectoparasitoid wasps genus Nasonia (N. giraulti, N. longicornis, and N. vitripennis). The 0.6 mg animals were flown under tethered flight conditions in a flight simulator that allowed modulation of power production by employing an open-loop visual stimulation technique. At maximum locomotor capacity, flight muscles of Nasonia are capable to sustain 72.2 ± 18.3 W kg−1 muscle mechanical power at a chemo-mechanical conversion efficiency of approximately 9.8 ± 0.9%. Within the working range of the locomotor system, profile power requirement for flight dominates induced power requirement suggesting that the cost to overcome wing drag places the primary limit on overall flight performance. Since inertial power is only approximately 25% of the sum of induced and profile power requirements, Nasonia spp. may not benefit from elastic energy storage during wing deceleration phases. A comparison between wing size-polymorphic males revealed that wing size reduction is accompanied by a decrease in total flight muscle volume, muscle mass-specific mechanical power production, and total flight efficiency. In animals with small wings maximum total flight efficiency is below 0.5%. The aerodynamic and power estimates reported here for Nasonia are comparable to values reported previously for the fruit fly Drosophila flying under similar experimental conditions, while muscle efficiency of the tiny wasp is more at the lower end of values published for various other insects.

Keywords
Flight; Power requirements; Muscle mechanical power; Metabolic conversion; Muscle efficiency; Aerodynamic efficiency; Nasonia; Wasp
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Biotechnology - Volume 124, Issue 1, 25 June 2006, Pages 93–107
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us