Lamprecht, I.Seymour, R.White, C.Matthews, P.Wadso, L.2010-03-312010-03-312009Journal of Thermal Analysis and Calorimetry: an international forum for thermal studies, 2009; 95(3):743-7471388-61501588-2926http://hdl.handle.net/2440/57240Discontinuous 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.encalorimetrydiscontinuous gas exchange cycles (DGC)insectsmetabolismrespirometryJournal article002009038510.1007/s10973-008-9409-00002644364000112-s2.0-7795547160339134Seymour, R. [0000-0002-3395-0059]