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Kalahari CheetahsAdaptations to an arid region$
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Gus Mills and Margaret Mills

Print publication date: 2017

Print ISBN-13: 9780198712145

Published to Oxford Scholarship Online: June 2017

DOI: 10.1093/oso/9780198712145.001.0001

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(p.103) Chapter 8 Energetics
Kalahari Cheetahs

M.G.L. Mills

M.E.J. Mills

Oxford University Press

Measurements of daily energy expenditure and water turnover showed that energy expenditure in cheetahs was not significantly greater than expected, but water turnover was low. There were no sex differences in daily energy expenditure, but when hunting along riverbeds cheetahs used more energy than when hunting in the dunes, probably because they moved further in the riverbeds. There were no differences in daily energy expenditure between females in different stages of reproduction. Energy expended chasing prey differed; small prey being least costly and large species most costly. Analyses of prey chases using both GPS and accelerometer loggers revealed that there were two phases; an initial rapid acceleration to catch up with the prey, followed by a slowing phase as cheetahs followed twists and turns of the prey as the distance between them closed. A visualization of five phases recorded from accelerometer data during a successful steenbok hunt is presented.

Keywords:   energy expenditure, doubly labelled water, data loggers, cumVeDBA, water turnover, speed, accelerometer data visualization

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