QUICK SEARCH:   [advanced] Author: Keyword(s):
Home     Help     Feedback     Subscriptions     Archive     Search     Table of Contents

First published online October 27, 2003

This Article Summary Full Text Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Nespolo, R. F. Articles by Bozinovic, F. Search for Related Content PubMed PubMed Citation Articles by Nespolo, R. F. Articles by Bozinovic, F.

Intrapopulational variation in the standard metabolic rate of insects: repeatability, thermal dependence and sensitivity (Q₁₀) of oxygen consumption in a cricket

R. F. Nespolo^1,2,*, M. A. Lardies² and F. Bozinovic²

¹ Instituto de Ecología y Evolución, Facultad de Ciencias, Universidad Austral de Chile, Casilla 567, Valdivia, Chile
² Center for Advanced Studies in Ecology and Biodiversity and Departamento de Ecología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago 6513677, Chile

View larger version (22K): [in a new window]   Fig. 1. Oxygen consumption and body mass in crickets acclimated to and measured at 7°C, 17°C and 27°C. For means and regression statistics, see Table 1.

View larger version (10K): [in a new window]   Fig. 2. Interaction plot (see Table 2) from an ANCOVA, with body mass Mb as the covariate, showing the relationship between sex and ambient temperature Ta on O2. Data were transformed to log+1 to meet ANOVA assumptions. Values are adjusted means ± S.E.M. (N=75, 147 and 70 for 7°C, 17°C and 27°C, respectively).

View larger version (16K): [in a new window]   Fig. 3. Repeatability of the rate of oxygen consumption of 85 crickets measured twice (at Ta=17°C) before and after a 1 month interval. Data are residuals of body mass. ***P<0.001.

View larger version (15K): [in a new window]   Fig. 4. Q10 computed for each individual, measured at two temperatures (open circles, 7–17°C; filled circles, 17–27°C), versus body mass. Only the regression between Q10 and body mass in the 7–17°C range was significant (see text for statistics).

View larger version (16K): [in a new window]   Fig. 5. Correlation (residuals from body mass) of individual Q10 values measured at two temperature ranges (7–17°C and 17–27°C). ***P<0.001.