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Figure 2 | BMC Evolutionary Biology

Figure 2

From: Selection towards different adaptive optima drove the early diversification of locomotor phenotypes in the radiation of Neotropical geophagine cichlids

Figure 2

Phylogenetic Principal Components Analysis (PCA) for locomotor morphology based on the Maximum Clade Credibility (MCC) tree. Refer to Figure 1 for complete species names. The green and blue convex hulls indicate the areas of morphospace occupied by lineages belonging to the two geophagine adaptive peaks as identified by SURFACE. Green: Crenicichla-Teleocichla adaptive peak. Blue: benthivorous/epibenthivorous adaptive peak. Colours correspond to those on Figure 1. Text on the top and right margin of the plot indicate the trait complexes and functional implications of these trait complexes based on published literature (refer to text and Additional file 2 for details) at the extremes of PC1 and PC2. Numbers in brackets indicate the percent variance explained by each of the critical PC axes. Photos are included in the plot to show the variation in functional morphology along the axes and correspond to species present near the extreme of each axis. Starting with the photos at the top left corner and going clockwise, the species represented are: Crenicichla sp. “Orinoco-wallacii”, Geophagus aff. dicrozoster, Mikrogeophagus altispinosus, Guianacara dacrya, Teleocichla sp. “preta”, and Crenicichla lugubriscp The photo in the centre of the plot is Mazarunia charadrica. Photos were taken by H. López-Fernández, J.H. Arbour, K.M. Alofs, N.K. Lujan.

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