Figure 4

Scaling of morphological and mechanical variables with crab body mass. Each symbol represents a species average (± 1 S.E.M.) for both the variable in question and body mass. Scaling exponents are slopes of a regression of the logs of the mean values. (A) Mass of the major claw, (B) length of the major claw, (C) frontal area of the major claw, (D) Force required to puncture the manus cuticle, (E) Force estimated at the claw tubercle, calculated from the morphology of the claw, see text.