Figure 4.

Modelled and observed allometric relationship between wing size and body size in Drosophila. (a) When both the wing and the body have no intrinsic growth rate (c_b, $c_{\text{b}}^{\prime }$, c_d and $c_{\text{d}}^{\prime }=0$) the model predicts a highly hyperallometric relationship between wing cell number and body size (values as in table 1). (b) In fact, the nutritional static allometry between wing cell number and body volume (thorax length³) is linear but hypoallometric, such that α=0.43. Flies reared on diets of increasing nutritional quality (2–100% of standard diet). White diamonds, 2% diet; grey diamonds, 5% diet; dark grey diamonds, 10% diet; black diamonds, 100% diet. Dashed line is isometry. See electronic supplementary material for methods.