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First published online March 31, 2005
Journal of Experimental Biology 208, 1453-1458 (2005)
Published by The Company of Biologists 2005
doi: 10.1242/jeb.01569

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The role of ultraviolet wavelengths in the mate-choice decisions of female three-spined sticklebacks

P. D. Boulcott^*, K. Walton and V. A. Braithwaite

The University of Edinburgh, Institute of Cell and Animal Population Biology, West Mains Road, Edinburgh EH9 3JT, Scotland

View larger version (43K): [in a new window]   Fig. 1. Schematic diagram of the two-choice apparatus used in Exps 2–4.

View larger version (22K): [in a new window]   Fig. 2. (A) Transmission curves for the UV+ and UV–filters (300–700 nm). (B) Relative irradiance (log quantal flux) of full spectrum fluorescent tubes (Arcadia Ltd, UK) used in all four experiments (350–700 nm).

View larger version (19K): [in a new window]   Fig. 3. Comparison of female preference according to light-filter type. Exps 1 and 3 were control experiments conducted in the absence of other conspecifics, and tested the preferences of non-reproductive and sexually receptive females, respectively. Exp. 2 tested when small shoals of conspecifics could be viewed through the two filter types. Exp. 4 tested preference when sexually responsive males could be viewed (***P<0.01). In all four experiments, preference is denoted by the proportion of time each individual spent in either of the two preference zones (UV+/UV–) where the fish was facing towards the choice compartments during the 20 min test. Values are means ± S.E.D. (N=10).