Please use this identifier to cite or link to this item: https://doi.org/10.1098/rspb.2006.0020
Title: Effects of age and feeding history on structure-based UV ornaments of a jumping spider (Araneae: Salticidae)
Authors: Lim, M.L.M. 
Li, D. 
Keywords: Body conditions
Cosmophasis umbratica
Jumping spiders
Structural colour
UV reflectance
UV vision
Issue Date: 22-Feb-2007
Citation: Lim, M.L.M., Li, D. (2007-02-22). Effects of age and feeding history on structure-based UV ornaments of a jumping spider (Araneae: Salticidae). Proceedings of the Royal Society B: Biological Sciences 274 (1609) : 569-575. ScholarBank@NUS Repository. https://doi.org/10.1098/rspb.2006.0020
Abstract: Recent studies have shown for birds that females sometimes choose mates on the basis of condition-dependent variation in ultraviolet (UV, less than 400 nm) ornamentation, but there have been few comparable studies on invertebrates. Yet many invertebrates have UV structural coloration. Here, we investigate Cosmophasis umbratica, a jumping spider (Araneae: Salticidae) that has sexually dimorphic UV-iridescent ornamentation, and we provide evidence that male UV coloration is condition dependent in this species. Spectral-reflection patterns change with male age and prior feeding history. The position of the UV band (i.e. UV hue) of the carapaces of younger (field-collected as subadults and matured as adults in laboratory) males shifted, relative to older (field-collected as adults) males, significantly towards longer wavelengths. Food deprivation significantly decreased the spectral intensity of the abdomen, but not the carapace. Questions concerning the mechanisms by which UV ornaments change are highlighted, as are hypotheses concerning the role of condition-dependent UV variation in male-male competition and as a criterion used by females when making mate-choice decisions. © 2006 The Royal Society.
Source Title: Proceedings of the Royal Society B: Biological Sciences
URI: http://scholarbank.nus.edu.sg/handle/10635/100540
ISSN: 09628452
DOI: 10.1098/rspb.2006.0020
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