Spider signals: Are web decorations visible to birds and bees?

Matthew J. Bruce*, Astrid M. Heiling, Marie E. Herberstein

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    59 Citations (Scopus)

    Abstract

    We are becoming increasingly aware of animal communication outside the range of human sensitivity. Web decorations are silk structures used by orb-web spiders to deceive prey and predators. However, despite the level of interest in these structures, their visibility to prey and predators has never, to our knowledge, been objectively assessed. Here, we use spectrophotometric analyses to show that the decorations of all five tested spider species are visible to honey bees and birds over short and long distances. Furthermore, the discoid decorations of one species may provide some protection against arthropod predators. However, these decorations are inefficient at camouflaging the spider against birds, despite the overlap between the spider's body and web decoration.

    Original languageEnglish
    Pages (from-to)299-302
    Number of pages4
    JournalBiology Letters
    Volume1
    Issue number3
    DOIs
    Publication statusPublished - 22 Sep 2005

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