《自然》[Nature]13年6月13日出版pdf全文

nero1981

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The cheetah is widely recognized 8 \) j7 ~7 E! r4 w. T$ y- r0 {
as the fastest animal on land, with a reported top speed of 29 metres per 8 Z. N# S5 ~( X4 v
second. However, few precise measurements have been made and only rarely have , K: w2 i  O2 j$ |: z
speeds faster than racing greyhounds (18 metres per second) been recorded. Now a 2 z+ i2 s! A/ e8 n
team from the Royal Veterinary College, UK, working with the Botswana Predator
4 H! C  N$ K$ m7 Z# [+ ZConservation Trust, has used custom-built tracking collars containing GPS and
& _9 V4 h0 A- M" Binertial measurement units to capture the locomotor dynamics of cheetahs hunting : a9 D1 e) `6 Q# t1 f" q% F2 P
in the wild. The 0 e# b6 h5 k% @! ~% o
top speed observed was 25.9 metres per second (93 kilometres per hour). Most   L2 q6 [9 r+ K9 Q
hunts involved only moderate speeds, their success relying on a combination of   t+ q' s, i! A; Z% ~1 N
power, acceleration and agility. Cover: a cheetah gives chase, Serengeti
5 s6 f8 |/ Z2 [. }# f. {+ sNational Park, Tanzania (Winfried Wisniewski/Corbis)2 x+ M$ z0 o9 w) `, X

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