Figure 5From: Heterochrony, modularity, and the functional evolution of the mechanosensory lateral line canal system of fishesExpected trends for the analysis of heterochrony and modularity in the cranial lateral line system. A) Increase in the size of a variable in both experimental species (TRA - Tramitichromis sp.; AU - Aulonocara stuartgranti) are plotted for two canals (modules; SO - supraorbital; MD - mandibular). Similar trends for both canals (rate increase is faster in Aulonocara relative to Tramitichromis) is evidence for rate heterochrony. B) If both canals (modules) show similar rates within a species, this is evidence for integration among canals. C) If the two canals show different rates of increase in a species, this is evidence for independence between canals.Back to article page