Function of bright coloration in the wasp spider Argiope bruennichi (Araneae: Araneidae)

Bush, A. A and Yu, D. W and Herberstein, Mariella E. (2008) Function of bright coloration in the wasp spider Argiope bruennichi (Araneae: Araneidae). Proceedings of the Royal Society B: Biological Sciences, 275 (1640). pp. 1337-1342. ISSN 0962-8452

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Abstract

There are two major competing explanations for the counter-intuitive presence of bright coloration in certain orb-web spiders. Bright coloration could lure insect prey to the web vicinity, increasing the spider's foraging success. Alternatively, the markings could function as disruptive camouflage, making it difficult for the insect prey to distinguish spiders from background colour variation. We measured the prey capture rates of wasp spiders, Argiope bruennichi, that were blacked out, shielded from view using a leaf fragment, or left naturally coloured. Naturally coloured spiders caught over twice the number of prey as did either blacked-out or leaf-shielded spiders, and almost three times as many orthopteran prey. Spectrophotometer measurements suggest that the bright yellow bands on the spider's abdomen are visible to insect prey, but not the banding on the legs, which could disguise the spider's outline. Thus, our results provide strong support for the hypothesis that bright coloration in the wasp spider acts as a visual lure for insect prey and weak support for the hypothesis that the arrangement of the banding pattern across the spider's body disguises the presence of the spider on the web.

Item Type: Journal Article
Journal or Publication Title: Proceedings of the Royal Society B: Biological Sciences
Uncontrolled Keywords: /dk/atira/pure/subjectarea/asjc/2700
Subjects:
Departments: Faculty of Science and Technology > Lancaster Environment Centre
ID Code: 132967
Deposited By: ep_importer_pure
Deposited On: 17 Apr 2019 12:00
Refereed?: Yes
Published?: Published
Last Modified: 15 Jan 2020 05:08
URI: https://eprints.lancs.ac.uk/id/eprint/132967

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