Fig. 3: Excess allele-sharing is widespread between whitefish species both within and between lake systems.
From: Genomic architecture of adaptive radiation and hybridization in Alpine whitefish
F-branch (fb(C)) statistics across our dataset highlight excess allele-sharing between tips in the tree (which represent species or individuals when species were not monophyletic; horizontally arranged at the top of the figure) and each other tip (solid line) and node (dotted line) in the phylogenetic tree (vertically arranged on the left of the figure), compared to its sister branch. The associated lake and ecomorph of each tree tip is indicated by the symbol and colour (as in Fig. 1a). The redness of each cell in the matrix indicates the degree of excess allele-sharing between each tree tip (C) and each tip or node (b) with significant instances of excess allele-sharing, where the Z-score was >4.41 (equivalent to the Bonferroni multiple-testing corrected P-value of 0.01), are highlighted with a dot. For clarity, when a species within a lake or lake system is supported as monophyletic we have collapsed all of its individuals into a single tree tip. Grey shading indicates tests which cannot be carried out due to the topology of the tree. F-branch statistics associated with species of the three focal ecomorphs are highlighted with boxes in the matrix, including the large-pelagic ecomorph of which we have three species from three lake systems (black), pelagic-profundal ecomorph as a single species from Lucerne (pink) and the benthic-profundal ecomorph as a single species from Thun (green).
