Visual habitat geometry predicts relative morph abundance in the colour-polymorphic ornate rainbowfish

Hancox, Daniel, Wilson, Robbie S. and White, Craig R. (2013) Visual habitat geometry predicts relative morph abundance in the colour-polymorphic ornate rainbowfish. Proceedings of the Royal Society B-Biological Sciences, 280 1752: . doi:10.1098/rspb.2012.2377


Author Hancox, Daniel
Wilson, Robbie S.
White, Craig R.
Title Visual habitat geometry predicts relative morph abundance in the colour-polymorphic ornate rainbowfish
Journal name Proceedings of the Royal Society B-Biological Sciences   Check publisher's open access policy
ISSN 0962-8452
1471-2954
Publication date 2013-02-01
Year available 2012
Sub-type Article (original research)
DOI 10.1098/rspb.2012.2377
Open Access Status Not Open Access
Volume 280
Issue 1752
Total pages 7
Place of publication London, United Kingdom
Publisher The Royal Society Publishing
Language eng
Formatted abstract
During colour signalling in aquatic environments, the colour of the ambient light, the background against which signals are viewed and signal transmission through the environment can all have profound impacts on the efficacy of a given signal. In colour-polymorphic species, where alternative morphs persist owing to a balance in the natural and sexual selection for each, changes to the visual context can have large effects on the local success and relative abundance of competing phenotypes. The ornate rainbowfish, Rhadinocentrus ornatus, is composed of populations that vary in the relative frequency of red and blue individuals, and inhabit sites that vary in water transmittance from clear (white) to heavily tannin-stained (red-shifted). Using spectroradiometry, we measured the downwelling and sidewelling irradiance, bank radiance and water transmittance of 10 R. ornatus habitats. We found that the relative local abundance of each morph was predicted not by water transmittance but by chromatic differences between the vertical (downwelling light) and horizontal (bank colour) components of the habitat. This visual habitat geometry should increase contrast between the colour signal and background, with large potential to influence the strength of natural and sexual selection in this system.
Keyword Bluefin Killifish
Guppy
Colour signalling
Water transmittance
Phenotypic divergence
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Published online December 5, 2012

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2013 Collection
School of Biological Sciences Publications
 
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 3 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 5 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Sun, 27 Jan 2013, 10:55:18 EST by System User on behalf of School of Biological Sciences