《自然》[Nature]13年6月13日出版pdf全文

nero1981

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2 I# [$ L# c: q7 i; ?% }5 y( y5 oThe cheetah is widely recognized ( u9 Y% ~* Z. Q; v1 C
as the fastest animal on land, with a reported top speed of 29 metres per
4 T9 z. |/ U( A0 dsecond. However, few precise measurements have been made and only rarely have
6 c6 T9 Q9 v7 B! `+ ?  ?speeds faster than racing greyhounds (18 metres per second) been recorded. Now a   ^8 j' i' s3 g* \
team from the Royal Veterinary College, UK, working with the Botswana Predator % p! u: t4 m& u! l0 E( e9 \
Conservation Trust, has used custom-built tracking collars containing GPS and ( ?9 {* m7 \9 {  m: z( f7 L& E
inertial measurement units to capture the locomotor dynamics of cheetahs hunting
( f3 I6 `% @4 Y7 [in the wild. The 4 A, k' F, m6 [; R( C' @; b
top speed observed was 25.9 metres per second (93 kilometres per hour). Most
6 N5 |2 \) d% c: V3 rhunts involved only moderate speeds, their success relying on a combination of
# |: t4 O4 a) T7 ^power, acceleration and agility. Cover: a cheetah gives chase, Serengeti 5 I0 v% [% o8 }9 v
National Park, Tanzania (Winfried Wisniewski/Corbis)
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