Fig. 4

Variation of biometrical egg variables throughout embryonic development of O. vulgaris. Lines stand for Lowess regressions with a window of 0.6: for pooled data when the effect of diet was not significant, otherwise for each diet; black circles and lines crab diet; grey circles and lines squid diet; open circles and dashed lines sardine diet. In plot e, samples with eggs within ±3 Naef stages from Boletzky’s curve were used; large crosses represent data from Silva and Vidal (2006)