《自然》[Nature]13年6月13日出版pdf全文

nero1981

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  p* @/ y. B4 ^  t8 q8 eThe cheetah is widely recognized , c: t& M$ ^9 M+ [  h( Z5 h
as the fastest animal on land, with a reported top speed of 29 metres per 7 f" i. P0 w+ ^
second. However, few precise measurements have been made and only rarely have * \9 L0 u! ]- \9 K; S8 ^, q
speeds faster than racing greyhounds (18 metres per second) been recorded. Now a
. m7 ?2 W& K6 L9 Nteam from the Royal Veterinary College, UK, working with the Botswana Predator ' e8 ?, j9 n+ `) R; V9 l$ h
Conservation Trust, has used custom-built tracking collars containing GPS and , ?, u( ^; {& I1 _* Y/ D# q8 U. _
inertial measurement units to capture the locomotor dynamics of cheetahs hunting
" b( m7 Z/ p$ E7 }8 F4 \# gin the wild. The 9 n, S) }' \1 T1 \/ N
top speed observed was 25.9 metres per second (93 kilometres per hour). Most
- V7 k/ g# h6 u% l) _hunts involved only moderate speeds, their success relying on a combination of * F5 R2 v' u8 D, K
power, acceleration and agility. Cover: a cheetah gives chase, Serengeti - U8 I) r$ t, {2 J" _: b
National Park, Tanzania (Winfried Wisniewski/Corbis)' t) i# `0 ^: c; U+ ^' V' f

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