《自然》[Nature]13年6月13日出版pdf全文

nero1981

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: }( R# G* H4 MThe cheetah is widely recognized & V) G8 N3 z, ]  x
as the fastest animal on land, with a reported top speed of 29 metres per ; T8 C! S2 e% y1 L9 E; I
second. However, few precise measurements have been made and only rarely have
7 {) n+ Q8 l$ L, v9 F- ?speeds faster than racing greyhounds (18 metres per second) been recorded. Now a
/ x5 m5 Z, m: Jteam from the Royal Veterinary College, UK, working with the Botswana Predator
8 G/ E+ c- C/ |6 i/ BConservation Trust, has used custom-built tracking collars containing GPS and
1 e( X  K% |) U+ Zinertial measurement units to capture the locomotor dynamics of cheetahs hunting ; I/ ?# A, ?; z  B9 d; _
in the wild. The 7 M' ^2 D) H4 L
top speed observed was 25.9 metres per second (93 kilometres per hour). Most ) }' X+ O4 c4 m% F9 g
hunts involved only moderate speeds, their success relying on a combination of $ m( K, l6 x# S+ v4 F! G
power, acceleration and agility. Cover: a cheetah gives chase, Serengeti
/ \* k0 E0 N. h9 r' R6 s0 oNational Park, Tanzania (Winfried Wisniewski/Corbis): f( |7 M; h/ n+ t% s" E  Z  L

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