FIG. 9 in Use of cnidae in taxonomy: implications from a study of Acrozoanthus australiae (Hexacorallia, Zoanthidea)

FIG. 9. Bimodal area frequency distributions for nematocyst capsules of Acrozoanthus australiae polyp 4.0 mm diameter from Indonesia. In this polyp (bud) the nematocyst capsule populations apparently consist of large residual cnidae derived from the parent polyp (black bars) and smaller capsules produced in situ (white bars). All left y- axes are frequency, n~100. (A) Lower filament b-mastigophores, no overlap of populations (means~129.5 and 212.5 mm2). (B) Upper filament b-mastigophores, no overlap of populations means~140 and 236.5 mm2. (C) Tentacle tip b-mastigophores (stippled bars), showing data also plotted as cumulative percentages ($). (D) As (C) but cumulative percentages on probability scale, split at the point of flexure, and expanded (see text) ($ in situ population, # residual population); the series means~205 and 255 mm2 (corresponding to 50% probability). (E) Upper filament p- mastigophores, whole sample, means~296 and 351 mm2. (F) Scapus holotrichs, whole sample, means~295 and 335 mm2.