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First published online December 14, 2007
Journal of Experimental Biology 211, 35-41 (2008)
Published by The Company of Biologists 2008
doi: 10.1242/jeb.012658
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Development partly determines the aerobic performance of adult deer mice, Peromyscus maniculatus

Gregory A. Russell1,*, Enrico L. Rezende2 and Kimberly A. Hammond1

1 Department of Biology, University of California at Riverside, Riverside, CA 92521, USA
2 Integrative Ecology Group, Estación Biológica de Doñana, CSIC, Apdo. 1056, E-41080 Sevilla, Spain


Figure 1
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  		Fig. 1. Experimental design employed in this study. Testing conditions are described within each column, sample sizes and results are summarized in Table 1.

 

Figure 2
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  		Fig. 2. Aerobic performance at 5 weeks of age measured in hypoxia and normoxia. Asterisks represent statistical significance within birth altitude; lower-case letters represent statistical significance in hypoxia and upper-case letters represent statistical significance in normoxia. Means are body mass-corrected values from ANCOVA and error bars are s.e.m.

 

Figure 3
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  		Fig. 3. Top panel, aerobic performance at 13 weeks of age measured in hypoxia and normoxia. Mice were pooled by acclimation altitude because this was the only significant main effect (see Results). Asterisks represent statistical significance within acclimation altitude; lower-case letters represent statistical significance in hypoxia and upper-case letters represent statistical significance in normoxia. Means are body mass-corrected values from ANCOVA and error bars are s.e.m. Bottom panels, adjusted means ± s.e.m. from ANCOVAs performed separately for trials in hypoxia (left) and normoxia (right). The birth site x acclimation altitude interaction was significant in both ANCOVAs (see Results).

 

Figure 4
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  		Fig. 4. Top panel, changes in body mass and aerobic performance, measured in hypoxia (middle panel) and normoxia (bottom panel) during the 8 week period between the first and second measurements. Open symbols represent low-born animals and filled symbols represent high-born animals. Means ± s.e.m. are adjusted estimates controlling for within-individual effects.

 




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