@article{fdi:010071433, title = {{T}he aerodynamic signature of running spiders}, author = {{C}asas, {J}. and {S}teinmann, {T}. and {D}angles, {O}livier}, editor = {}, language = {{ENG}}, abstract = {{M}any predators display two foraging modes, an ambush strategy and a cruising mode. {T}hese foraging strategies have been classically studied in energetic, biomechanical and ecological terms, without considering the role of signals produced by predators and perceived by prey. {W}olf spiders are a typical example; they hunt in leaf litter either using an ambush strategy or by moving at high speed, taking over unwary prey. {A}ir flow upstream of running spiders is a source of information for escaping prey, such as crickets and cockroaches. {H}owever, air displacement by running arthropods has not been previously examined. {H}ere we show, using digital particle image velocimetry, that running spiders are highly conspicuous aerodynamically, due to substantial air displacement detectable up to several centimetres in front of them. {T}his study explains the bimodal distribution of spider's foraging modes in terms of sensory ecology and is consistent with the escape distances and speeds of cricket prey. {T}hese findings may be relevant to the large and diverse array of arthropod preypredator interactions in leaf litter.}, keywords = {}, booktitle = {}, journal = {{PL}o{S} {O}ne}, volume = {3}, numero = {5}, pages = {e2116 : 6}, year = {2008}, DOI = {10.1371/journal.pone.0002116}, URL = {https://www.documentation.ird.fr/hor/fdi:010071433}, }