Fig. 6

Zoea IV, consecutive horizontal sections from micro-CT analysis, from dorsal (a) to ventral (i). In a and c, the organs are coloured according to code used in Fig. 5. Crossed arrows in I indicate the orientation (a - anterior, l -lateral, p - posterior). Abbreviations: A1 - first antenna, A2 - second antenna, AC - anterior caecum, AG - antennal gland, Br – median brain, Bst - epithelium of the branchiostegite, CS - cardiac stomach, DA – descending artery, DCL - deutocerebral chemosensory lobe, DEM – dorsal extensor muscle, DG - digestive gland, Eso - oesophagus, EyNP - eyestalk neuropil, Gi - gill, H - heart, HG - hindgut, Lb - labrum, Lu - lumen, MA - mandibular adductor musculature, Md - mandible, Mxp1 - first maxilliped, Mxp2 - second maxilliped, PNT - projection neuron tract, P - pereiopod anlagen, Pl - pleopod anlagen, PoC - posterior caecum, PS - pyloric stomach, Ros - rostrum, SEG - suboesophageal ganglia, TG - thoracic ganglia, VFM - flexor muscles, VNC –ventral nerve cord. Scale bars represent 200 μm