Symmorphosis and the insect respiratory system: Allometric variation

Snelling, Edward P., Seymour, Roger S., Runciman, Sue, Matthews, Philip G. D. and White, Craig R. (2011) Symmorphosis and the insect respiratory system: Allometric variation. The Journal of Experimental Biology, 214 19: 3225-3237. doi:10.1242/jeb.058438

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Author Snelling, Edward P.
Seymour, Roger S.
Runciman, Sue
Matthews, Philip G. D.
White, Craig R.
Title Symmorphosis and the insect respiratory system: Allometric variation
Journal name The Journal of Experimental Biology   Check publisher's open access policy
ISSN 0022-0949
Publication date 2011-10
Sub-type Article (original research)
DOI 10.1242/jeb.058438
Open Access Status File (Publisher version)
Volume 214
Issue 19
Start page 3225
End page 3237
Total pages 13
Place of publication Cambridge, U.K.
Publisher The Company of Biologists
Collection year 2012
Language eng
Formatted abstract
Taylor and Weibel's theory of symmorphosis predicts that structures of the respiratory system are matched to maximum functional requirements with minimal excess capacity. We tested this hypothesis in the respiratory system of the migratory locust, Locusta migratoria, by comparing the aerobic capacity of the jumping muscles with the morphology of the oxygen cascade in the hopping legs using an intraspecific allometric analysis of different body mass (Mb) at selected juvenile life stages. The maximum oxygen consumption rate of the hopping muscle during jumping exercise scales as Mb1.02±0.02, which parallels the scaling of mitochondrial volume in the hopping muscle, Mb1.02±0.08, and the total surface area of inner mitochondrial membrane, Mb0.99±0.10. Likewise, at the oxygen supply end of the insect respiratory system, there is congruence between the aerobic capacity of the hopping muscle and the total volume of tracheoles in the hopping muscle, Mb0.99±0.16, the total inner surface area of the tracheoles, Mb0.99±0.16, and the anatomical radial diffusing capacity of the tracheoles, Mb0.99±0.18. Therefore, the principles of symmorphosis are upheld at each step of the oxygen cascade in the respiratory system of the migratory locust.
Keyword Allometry
Anatomical diffusing capacity
Tracheal system
Pulmonary diffusing-capacity
Maximum aerobic capacity
Locust jumping mechanism
Australian pelican
Domestic mammals
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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