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Journal of Thermal Analysis and Calorimetry

, Volume 95, Issue 3, pp 743–747 | Cite as

Discontinuous ventilation in the rhinoceros beetle Oryctes nasicornis

Direct and indirect calorimetry
  • I. Lamprecht
  • R. S. Seymour
  • C. R. White
  • P. G. D. Matthews
  • L. Wadsö
Insects and Social Communities

Abstract

Discontinuous gas exchange cycles (DGCs) are frequently observed with insects, i.e. oxygen take up and carbon dioxide release occur interrupted by periods of a few minutes up to many hours.

The paper presents direct and indirect calorimetric experiments on DGCs of the scarabid rhinoceros beetle Oryctes nasicornis. A direct/indirect calorimetric experiment is presented. Total and specific heat production rates amount to 0.56mWand 0.42mWg−1 in the first period without DGCs and to 0.43 mW (0.32 mW g−1) in the second phase, resp. The mean DGC amplitude is 0.184 mW and thus between 33 and 66% of the total turnover.

Keywords

calorimetry discontinuous gas exchange cycles (DGC) insects metabolism respirometry 

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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2009

Authors and Affiliations

  • I. Lamprecht
    • 1
  • R. S. Seymour
    • 2
  • C. R. White
    • 3
  • P. G. D. Matthews
    • 4
  • L. Wadsö
    • 5
  1. 1.Department for Biology, Chemistry, Pharmacy, Institute for ZoologyFree University of BerlinBerlinGermany
  2. 2.Ecology and Evolutionary BiologyThe University of AdelaideAdelaideAustralia
  3. 3.School of Integrative BiologyThe University of QueenslandSt LuciaAustralia
  4. 4.School of Integrative BiologyThe University of QueenslandSt LuciaAustralia
  5. 5.Building MaterialsLund UniversityLundSweden

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