Canadian Journal of Zoology Estimating the energy expenditure of endotherms at the species level Journal: Canadian Journal of Zoology Manuscript ID cjz-2020-0035 Manuscript Type: Article Date Submitted by the 17-Feb-2020 Author: Complete List of Authors: McNab, Brian; University of Florida, Biology Is your manuscript invited for consideration in a Special Not applicable (regular submission) Issue?: Draft arvicoline rodents, BMR, Anatidae, energy expenditure, endotherms, Keyword: Meliphagidae, Phyllostomidae © The Author(s) or their Institution(s) Page 1 of 42 Canadian Journal of Zoology Estimating the energy expenditure of endotherms at the species level Brian K. McNab B.K. McNab, Department of Biology, University of Florida 32611 Email for correspondence:
[email protected] Telephone number: 1-352-392-1178 Fax number: 1-352-392-3704 The author has no conflict of interest Draft © The Author(s) or their Institution(s) Canadian Journal of Zoology Page 2 of 42 McNab, B.K. Estimating the energy expenditure of endotherms at the species level. Abstract The ability to account with precision for the quantitative variation in the basal rate of metabolism (BMR) at the species level is explored in four groups of endotherms, arvicoline rodents, ducks, melaphagid honeyeaters, and phyllostomid bats. An effective analysis requires the inclusion of the factors that distinguish species and their responses to the conditions they encounter in the environment. These factors are implemented by changes in body composition and are responsible for the non-conformity of species to a scaling curve. Two concerns may limit an analysis. The factors correlatedDraft with energy expenditure often correlate with each other, which usually prevents them from being included together in an analysis, thereby preventing a complete analysis, implying the presence of factors other than mass.