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First published online December 26, 2008
Journal of Experimental Biology 212, 297-304 (2009)
Published by The Company of Biologists 2009
doi: 10.1242/jeb.021212
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Bioenergetics and inter-individual variation in physiological capacities in a relict mammal – the Monito del Monte (Dromiciops gliroides)

Pablo Cortés, Silvia A. Quijano and Roberto F. Nespolo*

Instituto de Ecología y Evolución, Universidad Austral de Chile, Casilla 567, Valdivia, Chile


Figure 1
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  		Fig. 1. A representative respirometric recording showing the measured variables as obtained from the analyzers: CO2 production, in parts per million (p.p.m., in black), O2 consumption, in fractional scale (in red) and H2O production, in parts per thousand (p.p.t., in blue). A detailed trace of CO2 and O2 is shown in the zoom. The CO2 analyzer is accurate enough to show, in some cases, the changes in gas concentration arising from respiratory movements.

 

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  		Fig. 2. Within-record comparisons of respiratory quotients (averages of the first, second and third hour of recording) in the first repetition (A), second repetition (B) and third repetition (C) (means ± s.e.m.; A, N=19; B, N=17; C, N=13). Differences were marginally significant in the first measurement (F2,36=2.9; P=0.068; repeated-measures ANOVA), significant in the second measurement (F2,34=8.10; P=0.0013; repeated-measures ANOVA) and non significant in the third measurement (F2,24=2.61; P=0.094; repeated-measures ANOVA). After pooling repetitions, the comparison became highly significant (F2,98=10.48; P=0.0001; repeated-measures ANOVA).

 

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