Ontogenetic and interspecific scaling of consumption in insects
James L Maino, Michael R Kearney
OIKOS | WILEY | Published : 2015
The uptake of resources from the environment is a basic feature of all life. Consumption rate has been found to scale with body size with an exponent close to unity across diverse organisms. However, past analyses have ignored the important distinction between ontogenetic and interspecific size comparisons. Using principles of dynamic energy budget theory, we present a mechanistic model for the body mass scaling of consumption, which separates interspecific size effects from ontogenetic size effects. Our model predicts uptake to scale with surface-area (mass2/3) during ontogenetic growth but more quickly (between mass3/4 and mass1) for interspecific comparisons. Available data for 41 insect ..View full abstract
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Awarded by Australian Research Council
Awarded by National Science Centre, Poland within HARMONIA
We thank C. Bywater, S. Kooijman, T. Jager and E. Pirtle for their insightful comments. This work was supported by a Discovery Project (DP110101776) and Australian Research Fellowship (DP110102813) grant from the Australian Research Council, and the National Science Centre, Poland within HARMONIA (2012/06/M/NZ/00137).