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Fig. 8.1 Experimental manipulation of Saharan sand viper ( Cerastes cerastes ): polar coordinates
of predatory strike and distance from the prey. ( a ) Control strike. ( b ) Strikes after denervation of
olfactory and vomeronasal nerves. ( c ) Strikes after denervation as in ( b ) and bilateral occlusion of
the eyes. The nonsignificant difference between trials ( a ) and ( c ) demonstrates that this species can
direct strikes using other sensory reception (Reproduced with permission from Young and Moran
2002 )
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