Figure 1. Scaling of tail and body size in the cownose ray, Rhinoptera bonasus from A hydrodynamic antenna: novel lateral line system in the tail of myliobatid stingrays

A) A linear regression showing, for all individuals measured (including males and females, Sup. Mat. Table 1), how the tail length significantly increases with the disc width (DW) (P = 0.004, R2 = 0.83). B) Tail length / DW ratio is negatively correlated with tail length and based on the linear regression in A, this relationship is non-linear (blue curve). This implies that smaller individuals have proportionally longer tails, which is supported by the fact that the smallest individual used in this study has a tail 1.7 times larger than its DW.