DOI: 10.5061/dryad.6djh9w1gb
title: Data from: The evolution of darter color and pattern: Small, rocky streams and riffles enhance the diversification of bright and conspicuous fishes

description: Organismal color and pattern is important to numerous aspects of animal
 fitness, and may impact species divergence. Whether different
 environmental conditions may impact rates of color diversification, and
 the subsequent impacts on lineage diversification, has not been well
 studied. We investigated the evolution of color and pattern in Darters
 (Etheostomatinae; Percidae), a species-rich clade of freshwater fishes
 showing a remarkable diversity in color. Using recently developed
 approaches in color and pattern analysis we quantified color and pattern
 attributes in 122 species. We applied multivariate and phylogenetic
 comparative methods to investigate the relationship between river habitat
 (drainage area, elevation, slope, substrate, etc) and darter color
 characteristics and changes in the rate of color evolution. We found color
 attributes were significantly related to river habitat, and rates of color
 evolution differed between macro- and micro-habitat categories; smaller
 streams and riffles in particular were associated with the rapid evolution
 of conspicuous and complex color patterns. We suggest that these
 differences are consistent with tradeoffs in predator abundance and photic
 environment. Small river habitats may facilitate rapid evolution of
 species-specific color patterns and reinforce divergence in secondary
 sympatry.
description: # Data from: The evolution of darter color and pattern: Small, rocky
 streams and riffles enhance the diversification of bright and conspicuous
 fishes (published in the journal Evolution) correspondence: Jessica H.
 Arbour; [[jessica.arbour@mtsu.edu](mailto:jessica.arbour@mtsu.edu)] The
 associated Dryad repository contains one file: (1)
 "colour_and_habitat_data.xlsx" - a xlsx file that contains the
 supporting data used for the analyses in the manuscript This file contains
 three tables. "Colour data by species" includes the result of an
 Adjacency Analysis of darter colouration. All values in the table are
 averaged by species (first column). Columns B to O (p_#) give the
 proportion of each of 14 colour classes detailed in the supplementary
 materials. "m" is the colour class transition density per pixel
 between colour classes. "A" is the aspect ratio of color
 transitions. "Sc" and "St" are the Simpson diversity
 indices for colour class and colour transitions. "m_dS" is the
 average chromatic boundary strength. Terminology follows the R packages
 "recolorize" and "pavo". "Image Source"
 gives the source for images used for each species. "Colour
 Centers" gives the RGB values for the center of each of the 14 colour
 classes used in adjacency analyses. "Environmental Data by
 Species" includes river drainage and substrate data per darter
 species. Columns B to H give the median for each drainage metric and its
 associated IQR: Values include river "drainage area" (km^2^),
 "elevation" (cm), "slope" (m/m), "discharge"
 (ft^3^/s), and "velocity" (ft/s). Columns L through AE give the
 proportion of observations of each substrate type per species. Column AF
 gives a binary character giving the typical occupation of riffles or pools
 by species.