Hair canopy of cricket sensory system tuned to predator signals.

摘要: Abstract Filiform hairs located on the cerci of crickets are among most sensitive sensors in animal world and enable to sense faintest air movements generated by approaching predators. While neurophysiological biomechanical aspects this sensory system have been studied independently for several decades, their integration into a coherent framework was wanting. In order evaluate hair canopy tuning predator signals, we built model cercal population coding oscillating flows hundreds sand cricket Gryllus bimaculatus ( Insecta: Orthoptera ). A complete survey all covering done intact using scanning electronic microscopy. An additive sinusoid signals varying frequencies velocities taking account directionality delivered curve. We show that range at which is best tuned corresponds values produced The relative short −3  m) long differing responses therefore detect predators time–frequency–intensity space both as far possible close range.