Phylogenetic Evidence for the Gain and Loss of a Sexually Selected Trait in Sailfin Mollies
Figure 3
Relationships between SL (standard length in mm) and (a) dorsal fin area (mm2) and (b) lateral projection area (mm2) (LPA = the sum of dorsal fin area (DFA) + caudal fin area (CFA) + body area (BA)) as estimated by a best-fit least-squares power function of (area) = + (SL)c using curve fitting software (Table Curve 2D). P. velifera is shown as the green line with triangles (DFA—, , and ; CFA—, , and ; BA—, , and ). P. latipunctata is shown as the red line with diamonds (DFA—, , and ; CFA—, , and ; BA—, , and ). P. mexicana is shown as the orange line with squares (DFA—, , and ; CFA—, , and ; BA—, , and ).