《自然》[Nature]13年6月13日出版pdf全文

nero1981

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The cheetah is widely recognized
" ?+ }! m& r  r0 T# v- ras the fastest animal on land, with a reported top speed of 29 metres per   N1 n/ ~# V5 p- k7 A$ u& R
second. However, few precise measurements have been made and only rarely have
0 C0 C: `9 }5 [; [4 Ispeeds faster than racing greyhounds (18 metres per second) been recorded. Now a 9 s6 ]. s5 z! m' T! c+ d
team from the Royal Veterinary College, UK, working with the Botswana Predator
% X4 b. o: v, h7 o+ {" c: qConservation Trust, has used custom-built tracking collars containing GPS and , c7 P/ M: Z2 X1 V! J, ]3 P: ?* N8 t3 M
inertial measurement units to capture the locomotor dynamics of cheetahs hunting 8 I' {! M- P$ {& ]* J9 Q" H- ?
in the wild. The
. T( Y' Q& Y0 B! C. z+ Z9 M0 Wtop speed observed was 25.9 metres per second (93 kilometres per hour). Most
9 }% d* S3 S& U$ A8 A: I2 }' g6 Ihunts involved only moderate speeds, their success relying on a combination of
& B4 x' Y" d! F# T1 z& Z0 o6 Qpower, acceleration and agility. Cover: a cheetah gives chase, Serengeti / [5 H* y$ |7 [
National Park, Tanzania (Winfried Wisniewski/Corbis)
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