Studying the influence of metabolic differences among individuals on survival or reproductive success in nature requires that

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Studying the influence of metabolic differences among individuals on survival or reproductive success in nature requires that an individual’s metabolism doesn’t vary too much from time point to time point. To investigate, Hayes and O’Connor (1999) measured repeatability of thermogenic capacity (ability to generate heat) by recording maximal rate of oxygen consumption (VO2max) in high-altitude deer mice exposed to cold temperatures in a wind tunnel. A sample of 34 mice were measured twice about 68 days apart. The two measurements on each mouse, in ml/min, are given below.

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a. Calculate the variance components of VO2max within and among deer mice.

b. What is the repeatability of thermogenic capacity, as measured using VO2max under cold exposure?

c. What are your assumptions in parts (a) and (b)?

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The Analysis Of Biological Data

ISBN: 9781319226237

3rd Edition

Authors: Michael C. Whitlock, Dolph Schluter

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