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Evolution and assessment of colour patterns in stream-resident and anadromous male threespine stickleback Gasterosteus aculeatus from three regions
Authors:Adam M. M. Stuckert  Sara Drury  Christopher M. Anderson  Tyler B. T. Bowling  Jeffrey S. Mckinnon
Affiliation:1. Department of Biology, East Carolina University, Greenville, North Carolina, USA;2. Department of Biological Sciences, University of Wisconsin-Whitewater, Whitewater, Wisconsin, USA
Abstract:We compared the colour patterns of free swimming, reproductively active male threespine stickleback Gasterosteus aculeatus of the anadromous and stream ecotypes from three geographically distinct regions. Consistent with the hypothesis of environmentally mediated selection, our results indicate ecologically replicated differences in G. aculeatus coloration between anadromous and stream-resident populations, and that G. aculeatus probably have the visual acuity to discriminate colour pattern differences between anadromous and stream-resident fish.
Keywords:adaptive radiation  carotenoid  colour evolution  Gasterosteus aculeatus  threespine stickleback
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