Scaling of resting and maximum hopping metabolic rate throughout the life cycle of the locust Locusta migratoria

Snelling, Edward P., Seymour, Roger S., Matthews, Philip G. D., Runciman, Sue and White, Craig R. (2011) Scaling of resting and maximum hopping metabolic rate throughout the life cycle of the locust Locusta migratoria. The Journal of Experimental Biology, 214 19: 3218-3224. doi:10.1242/jeb.058420

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Author Snelling, Edward P.
Seymour, Roger S.
Matthews, Philip G. D.
Runciman, Sue
White, Craig R.
Title Scaling of resting and maximum hopping metabolic rate throughout the life cycle of the locust Locusta migratoria
Formatted title
Scaling of resting and maximum hopping metabolic rate throughout the life cycle of the locust Locusta migratoria
Journal name The Journal of Experimental Biology   Check publisher's open access policy
ISSN 0022-0949
1477-9145
Publication date 2011-10
Sub-type Article (original research)
DOI 10.1242/jeb.058420
Open Access Status File (Publisher version)
Volume 214
Issue 19
Start page 3218
End page 3224
Total pages 7
Place of publication Cambridge, U.K.
Publisher The Company of Biologists
Collection year 2012
Language eng
Formatted abstract
The hemimetabolous migratory locust Locusta migratoria progresses through five instars to the adult, increasing in size from 0.02 to 0.95 g, a 45-fold change. Hopping locomotion occurs at all life stages and is supported by aerobic metabolism and provision of oxygen through the tracheal system. This allometric study investigates the effect of body mass (Mb) on oxygen consumption rate (O2,μmol h-1) to establish resting metabolic rate (RO2), maximum metabolic rate during hopping (MO2) and maximum metabolic rate of the hopping muscles (MO2,hop) in first instar, third instar, fifth instar and adult locusts. Oxygen consumption rates increased throughout development according to the allometric equations RO2=30.1Mb0.83±0.02, MO2=155Mb1.01±0.02, MO2,hop=120Mb1.07±0.02 and, if adults are excluded, MO2,juv=136Mb0.97±0.02 and MO2,juv,hop=103Mb1.02±0.02. Increasing body mass by 20-45% with attached weights did not increase mass-specific MO2 significantly at any life stage, although mean mass-specific hopping O2 was slightly higher (ca. 8%) when juvenile data were pooled. The allometric exponents for all measures of metabolic rate are much greater than 0.75, and therefore do not support West, Brown and Enquist's optimised fractal network model, which predicts that metabolism scales with a 3/4-power exponent owing to limitations in the rate at which resources can be transported within the body.
Keyword Allometry
Fractal network model
Hopping
Insect
Locust
Maximum metabolic rate
Respirometry
Weight
Discontinuous gas-exchange
Muscle aerobic capacity
Insect flight-muscle
Schistocerca-americana
Load carriage
Mathematically correct
Biologically relevant
Respiratory-function
Oxygen-consumption
Arginine kinase
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2012 Collection
School of Biological Sciences Publications
 
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