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Use and Pitfalls of Allometry: A Valuable Tool in Comparisons and Extrapolations between Species and in Ethical Considerations concerning the use of One Species to Model Another

Use and Pitfalls of Allometry: A Valuable Tool in Comparisons and Extrapolations between Species... Where research on one species is justified on the grounds that it will provide benefits to another, the strength of the ethical case depends critically on whether findings can be extrapolated meaningfully. Valid extrapolation depends on the species being sufficiently similar in respects critical to the research and on knowledge of the bases and effects of salient differences. Many biological parameters vary with body weight (W) between species. When species of small size are used to model larger ones, the influence of size on the rates of physiological, immunological and other processes must be taken into account. Between species, the rates of physiological processes tend to increase with W0.75, and the durations of physiological events tend to increase with W0.25. Providing potential pitfalls are understood, allometric scaling enables valid comparisons and extrapolations between species. Knowledge of these principles is crucial also in making predictions about many aspects of animals’ biology and has application also in making sound ethical judgments about the justifiability of extrapolations between species concerning the wide range of processes linked to rates of metabolism. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Alternatives to Laboratory Animals SAGE

Use and Pitfalls of Allometry: A Valuable Tool in Comparisons and Extrapolations between Species and in Ethical Considerations concerning the use of One Species to Model Another

Alternatives to Laboratory Animals , Volume 32 (1_suppl): 5 – Jan 1, 2004

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References (15)

Publisher
SAGE
Copyright
© 2004 Fund for the Replacement of Animals in Medical Experiments
ISSN
0261-1929
eISSN
2632-3559
DOI
10.1177/026119290403201s35
Publisher site
See Article on Publisher Site

Abstract

Where research on one species is justified on the grounds that it will provide benefits to another, the strength of the ethical case depends critically on whether findings can be extrapolated meaningfully. Valid extrapolation depends on the species being sufficiently similar in respects critical to the research and on knowledge of the bases and effects of salient differences. Many biological parameters vary with body weight (W) between species. When species of small size are used to model larger ones, the influence of size on the rates of physiological, immunological and other processes must be taken into account. Between species, the rates of physiological processes tend to increase with W0.75, and the durations of physiological events tend to increase with W0.25. Providing potential pitfalls are understood, allometric scaling enables valid comparisons and extrapolations between species. Knowledge of these principles is crucial also in making predictions about many aspects of animals’ biology and has application also in making sound ethical judgments about the justifiability of extrapolations between species concerning the wide range of processes linked to rates of metabolism.

Journal

Alternatives to Laboratory AnimalsSAGE

Published: Jan 1, 2004

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