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Keywords: respiratory quotient
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Journal Articles
J Exp Biol (2021) 224 (4): jeb240010.
Published: 25 February 2021
... 1 caused by increased CO 2 production resulting from increased de novo lipid synthesis. Carbohydrates De novo lipogenesis Locusts Macronutrients Respiratory exchange ratio Respiratory quotient Diets in nature vary tremendously in protein:carbohydrate (p:c) ratio, but we still...
Includes: Supplementary data
Journal Articles
J Exp Biol (2021) 224 (1): jeb234419.
Published: 11 January 2021
... is metabolically costly, and this cost persists for several days after thaw. Metabolic rate TCO 2 Hemolymph Respiratory quotient Spiracles CT min Insects overwintering in temperate regions may encounter temperatures low enough to freeze their body fluids. Although freezing is typically harmful...
Includes: Supplementary data
Journal Articles
J Exp Biol (2019) 222 (4): jeb194217.
Published: 21 February 2019
... were the major fuels during fasting, but carbohydrate oxidation increased immediately after feeding, while protein usage predominated at later times. Stop-flow respirometry Respiratory quotient Nitrogen quotient Specific dynamic action Protein In conclusion, we have used...
Journal Articles
J Exp Biol (2019) 222 (3): jeb191973.
Published: 11 February 2019
... the respiratory strategies used by spittlebugs, this study measured the P O 2 within the spittle of the meadow spittlebug, Philaenus spumarius , as well as the non-feeding metabolic rate (RMR) and respiratory quotient (RQ) of both nymphs and adults. The metabolic rate of nymphs feeding on xylem was also measured...
Journal Articles
J Exp Biol (2017) 220 (6): 964–968.
Published: 15 March 2017
... Hypoxia Respirometer Validation Fish Insect Respiratory quotient The development of high-precision non-dispersive infrared CO 2 analysers has made available a powerful tool for the measurement of CO 2 production rates ( Ṁ CO 2 ) in air-breathers, but overlapping absorption spectra of CO 2...
Includes: Supplementary data
Journal Articles
J Exp Biol (2016) 219 (7): 960–968.
Published: 1 April 2016
.... and Takahashi , A. ( 2002 ). Time course of change in respiratory quotient during prolonged starvation in carbon tetrachloride-induced cirrhotic rats . Nutr. Res.   22 , 695 - 703 . 10.1016/S0271-5317(02)00377-9 Neukirch , A. ( 1982 ). Dependence of the life span of the honeybee (Apis...
Includes: Supplementary data
Journal Articles
J Exp Biol (2009) 212 (2): 297–304.
Published: 15 January 2009
... ), the sole living representative of an otherwise extinct marsupial order (Microbiotheria). We measured resting metabolic rate as CO 2 production( V̇ CO 2 ) and O 2 consumption( V̇ O 2 )simultaneously, together with minimum thermal conductance (C), evaporative water loss (EWL) and respiratory quotient (RQ...
Journal Articles
J Exp Biol (2005) 208 (18): 3573–3579.
Published: 15 September 2005
... species belonging to four genera. Respiratory quotients (ratios of rates of CO 2 production to O 2 consumption) in all nine species are close to 1.0. This indicates that carbohydrate is the main fuel used for flight. Trehalase, glycogen phosphorylase and hexokinase activities are sufficient to account...
Journal Articles
J Exp Biol (2001) 204 (23): 4125–4139.
Published: 1 December 2001
...: rkjoseph@uci.edu 17 9 2001 © The Company of Biologists Limited 2001 2001 muscle asynchronous muscle efficiency work work loop metabolic rate respiratory quotient Cotinus mutabilis. The flight muscles of insects can be characterized as being synchronous or asynchronous...