Fig. 4. Variation of sense organs. (A) Scanning electron micrograph of olfactory aesthetascs in an adolescent. (B) Scanning electron micrograph of gustatory corrugated setae in an adolescent. (C) Means and ranges of the numbers of aesthetascs per specimen, plotted per stage (Juv 2 to Juv 6) and batch (from dams A and B and daughters B₁ and B₃). Juveniles were removed from the maternal pleopods in stage 2 and then reared under identical conditions in net culture systems. Shaded areas indicate ranges of all batches. ^*Only three individuals analysed in these groups. (D) Means and ranges of the numbers of corrugated setae per specimen (same specimens as in C), plotted per juvenile stage and batch. Note differences in variation among aesthetascs in C and corrugated setae in D. (E) Means and ranges of the numbers of corrugated setae on pereiopods 1, 2 and 3 (P1–P3), plotted per juvenile stage. Small circles and thin bars represent offspring of a single female (dam B) and large circles and thick bars pooled data of all batches (from dams A, B, B₁ and B₃).