The role of ultraviolet colour in the assessment of mimetic accuracy between Batesian mimics and their models: a case study using ant-mimicking spiders

摘要: The use of ultraviolet (UV) cues for intra- and inter-specific communication is common in many animal species. Still, the role UV signals under some predator-prey contexts, such as Batesian mimicry, not clear. mimicry a defensive strategy by which palatable species (the mimic) resembles an unpalatable or noxious model) to avoid predation. This has evolved independently different taxa that are predated capable perception. Moreover, there considerable variation how accurately mimics resemble their models across Our aim was investigate colour contributed mimetic accuracy using several ant-mimicking spider case study. We measured reflectance spectrum (300–700 nm) models, we tested whether they differ visible colour. modelled two predators could discriminate between information. found generally, spiders differed significantly from ant information range light cannot be extrapolated into UV. modelling suggested wasps should able combining light, whereas birds may them. Thus, show can influence mimic discuss its potential mimicry. conclude colour, especially range, taken account when measuring accuracy.