Fig. 6. Log diameter of funnel aperture (FA) versus log dorsal
mantle length (ML). y=1.053+0.803x;
r2=0.758, F-test P<0.0001. Because
the coefficient of the logML in the equation is <1, there is
negative allometry of the funnel aperture with development; it is largest
relative to the ML in the smallest squids.