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Keywords: respiratory quotient
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Journal Articles
J Exp Biol (2021) 224 (4): jeb240010.
Published: 25 February 2021
.... , Van Der Geyten , S. , Kühn , E. R. , Kaiya , H. , Kangawa , K. , Decuypere , E. , Buyse , J. and Darras , V. M. ( 2006 ). Peripheral ghrelin reduces food intake and respiratory quotient in chicken . Domest. Anim. Endocrinol. 30 , 108 - 116 . 10.1016/j.domaniend...
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 After ingestion of a meal, metabolic rate...
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
Journal Articles
J Exp Biol (2016) 219 (7): 960–968.
Published: 1 April 2016
... ) and V̇ CO 2  is carbon dioxide emission rate (µl CO 2  h −1 ). V̇ O 2  was converted to metabolic rate (MR) using: (1) according to Lighton (1991) , where MR is in watts (W), respiratory quotient (RQ)= V̇ CO 2 / V̇ O 2 , and V̇ CO 2  and V̇ O 2  are expressed in ml s −1 . Because...
Includes: Supplementary data
Journal Articles
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
... loop metabolic rate respiratory quotient Cotinus mutabilis. The flight muscles of insects can be characterized as being synchronous or asynchronous, depending on the relationship between muscle electrical activity and contraction during flight (for reviews, see Dudley, 2000 ; Josephson...
Journal Articles
J Exp Biol (1999) 202 (4): 441–451.
Published: 15 February 1999
... floridensis . Fuel use in this study is characterized by the respiratory quotient, measured at intervals during a flight using modified closed-chamber respirometry. Moths were either fed twice daily to satiation with 30 % sucrose or unfed, and their fuel use was measured during flights on the first, third...
Journal Articles
J Exp Biol (1998) 201 (22): 3123–3133.
Published: 1 November 1998
... or 15 °C. and increased with swimming speed at both temperatures and were higher at 15 °C than at 5 °C at all speeds, but the overall Q 10 values (1.23–1.48) were low in these long-term (6 weeks) acclimated fish. The respiratory quotient ( , approximately 0.85) was independent of both temperature...
Journal Articles
J Exp Biol (1998) 201 (10): 1651–1657.
Published: 15 May 1998
... by the oxidation of proline. Measurements of the respiratory quotient (RQ) confirmed that P. sinuata uses a combination of carbohydrates and proline to power its flight. At rest and during lift-generating tethered flight, the RQ is approximately 0.9. During warm-up, the RQ is significantly lower at 0.82, which...
Journal Articles
J Exp Biol (1997) 200 (15): 2115–2121.
Published: 1 August 1997
... W m −2 and 950 W m −2 ). In the absence of solar radiation, metabolic heat production is inversely correlated with air temperature over the measured range of 3–27 °C. The respiratory quotient varies significantly with ambient temperature, indicating that the catabolic substrate and the thermal...
Journal Articles
J Exp Biol (1997) 200 (12): 1757–1763.
Published: 1 January 1997
...P. A. J. Hawkins; P. J. Butler; A. J. Woakes; G. W. Gabrielsen ABSTRACT The rate of oxygen consumption , respiratory quotient (RQ) and deep body temperature ( T B ) were recorded during a single, voluntary ingestion of Arctic cod Boreogadus saida (mean mass 18.9±1.1 g, S.E.M., N =13) by five...
Journal Articles
Journal Articles
J Exp Biol (1991) 157 (1): 123–132.
Published: 1 May 1991
... behavioural repertoire of these captive animals within respirometry chambers. The effect on wild animals may be more profound and requires investigation. 21 12 1990 © 1991 by Company of Biologists 1991 energy expenditure oxygen consumption respiratory quotient blood sampling mouse...