Figure 3. Thermal performance curves estimated from the non-linear models applied to the raw maximum locomotory speed data for P. latiscutatus and E. quadrivirgata . Curves in panel A are based on racetrack sprint speeds of P. latiscutatus individuals from Hachijo-Kojima (blue solid line), where E. quadrivirgata is absent, and Kozu (orange solid line), where it is present. Panel B shows the curves based on P. latiscutatus open field sprint speeds on Kozu (solid grey line) and E. quadrivirgata maximum crawling speeds on Niijima and Kozu (black dotted line). The plotted points represent individual speed measurements for Hachijo-Kojima (blue) and Kozu (orange) P. latiscutatus in panel A, as well as for E. quadrivirgata (black) and open field P. latiscutatus (grey) in panel B. The vertical bands in both panels represent foraging body temperatures for P. latiscutatus measured on Hachijo-Kojima (blue) and Kozu (orange) islands, where the middle line is the mean, and the shaded range the standard error. The descending portion of theP. latiscutatus open field sprint speed curve (solid grey line) in panel B was removed for visual clarity.