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Color Vision Varies More Among Populations Than Among Species of Live-Bearing Fish From South America

Resource type
Date created
2015
Authors/Contributors
Abstract
BackgroundSensory Bias models for the evolution of mate preference place a great emphasis on the role of sensory system variation in mate preferences. However, the extent to which sensory systems vary across- versus within-species remains largely unknown. Here we assessed whether color vision varies in natural locations where guppies (Poecilia reticulata) and their two closest relatives, Poecilia parae and Poecilia picta, occur in extreme sympatry and school together. All three species base mate preferences on male coloration but differ in the colors preferred.ResultsMeasuring opsin gene expression, we found that within sympatric locations these species have similar color vision and that color vision differed more across populations of conspecifics. In addition, all three species differ across populations in the frequency of the same opsin coding polymorphism that influences visual tuning.ConclusionsTogether, this shows sensory systems vary considerably across populations and supports the possibility that sensory system variation is involved in population divergence of mate preference.
Document
Published as
Sandkam BA, Young CM, Breden FM, Bourne GR, Breden F. Color vision varies more among populations than among species of live-bearing fish from South America. BMC Evol Biol. 2015 Oct 16;15:225. doi: 10.1186/s12862-015-0501-3.
Publication title
BMC Evol Biol
Document title
Color Vision Varies More Among Populations Than Among Species of Live-Bearing Fish From South America
Date
2015
Volume
15
Issue
225
Publisher DOI
10.1186/s12862-015-0501-3
Copyright statement
Copyright is held by the author(s).
Scholarly level
Peer reviewed?
Yes
Language
English
Download file Size
art3A10.11862Fs12862-015-0501-3.pdf 1.96 MB

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