《自然》[Nature]13年6月13日出版pdf全文

nero1981

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0 s$ V' A; j% y7 {3 X% WThe cheetah is widely recognized
+ Q7 I  [* E/ K9 Y, o* a2 vas the fastest animal on land, with a reported top speed of 29 metres per
9 @- f9 V) A  u" ]+ n, gsecond. However, few precise measurements have been made and only rarely have
- ?/ S9 H4 i' g3 Xspeeds faster than racing greyhounds (18 metres per second) been recorded. Now a ' r9 r$ J; z7 G$ W5 _1 b$ r
team from the Royal Veterinary College, UK, working with the Botswana Predator 3 C# M4 T6 `7 Z2 K; d( j
Conservation Trust, has used custom-built tracking collars containing GPS and * q, @. T) y. K/ t! ?# Y2 y+ j
inertial measurement units to capture the locomotor dynamics of cheetahs hunting 0 _" y! M9 t# a) y# \. J) ^0 Z
in the wild. The 9 G4 f9 S# R& T
top speed observed was 25.9 metres per second (93 kilometres per hour). Most 3 U) e. R: |3 p$ I/ N' G) C3 c
hunts involved only moderate speeds, their success relying on a combination of 7 `' V, v5 G: Z) n# g& N
power, acceleration and agility. Cover: a cheetah gives chase, Serengeti
- U: H! m2 k8 v! s4 H* ]" NNational Park, Tanzania (Winfried Wisniewski/Corbis)$ Z: }8 ?' u5 `; K  _

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