IUCN / SSC Cat Specialist Group - Digital Cat Library |
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| Wilson, J.W.; Mills, M.G.L.; Wilson, R.P.; Peters, G.; Mills, M.E.J.; Speakman, J.R.; Durant, S.M.; Bennett, N.C.; Marks, N.J.; Scantlebury, M. | |
| Cheetahs, _Acinonyx jubatus_, balance turn capacity with pace when chasing prey | |
| 2013 Biology Letters (9): 1-4 | |
Predator-prey interactions are fundamental in the evolution and structure of ecological communities. Our understanding, however, of the strategies used in pursuit and evasion remains limited. Here, we report on the hunting dynamics of the world's fastest land animal, the cheetah, _Acinonyx jubatus_. Using miniaturized data loggers, we recorded fine-scale movement, speed and acceleration of free-ranging cheetahs to measure how hunting dynamics relate to chasing different sized prey. Cheetahs attained hunting speeds of up to 18.94 m s21 and accelerated up to 7.5 m s22 with greatest angular velocities achieved during the terminal phase of the hunt. The interplay between forward and lateral acceleration during chases showed that the total forces involved in speed changes and turning were approximately constant over time but varied with prey type. Thus, rather than a simple maximum speed chase, cheetahs first accelerate to decrease the distance to their prey, before reducing speed 5-8 s from the end of the hunt, so as to facilitate rapid turns to match prey escape tactics, varying the precise strategy according to prey species. Predator and prey thus pit a fine balance of speed against manoeuvring capability in a race for survival. |
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