Evidence for UV-based sensory exploitation in Australian but not European crab spiders

M. E. Herberstein, A. M. Heiling, K. Cheng

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Abstract

Some crab spiders reflect UV-light, thereby creating a deceptive signal that attracts prey to the flowers that they sit on. We conducted a survey of several Australian and European species of crab spiders and found that UV-reflection is common in Australian species but absent from European species. Furthermore, honeybees are attracted to UV-reflecting Australian spiders while they are either indifferent to or repelled by European crab spiders. We do not know if UV-reflection evolved once or several times independently in crab spiders endemic to Australia or whether UV-reflective spiders arrived in Australia more recently.

Original languageEnglish
Pages (from-to)621-634
Number of pages14
JournalEvolutionary Ecology
Volume23
Issue number4
DOIs
Publication statusPublished - 2009

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