Fig. 2

Nervous system of the anterior region of aulophora larvae of Lanice conchilega, cLSM micrographs. A. General anatomy of aulophora larvae sitting in its tube, overall serotonergic nervous system highlighted in green and α-tubulinergic setae in red. B. Serotonergic nervous system anterior region. Central nervous system like brain and vnc are highlighted in green, tentacular nerves in cyan and α-tubulinergic cilia on the lateral and lower lips in red. C. Close-up of the serotonergic nervous system of the head region. Ventral region of the brain and tentacular nerves are highlighted in cyan, dorsal region of the brain, cc and vnc in green and stomatogastric nerves including lip nerves in magenta. D. General anatomy of the serotonergic and α-tubulinergic nervous system of the anterior region. Ventral region of the brain and tentacular nerves are highlighted in cyan, central and stomatogastric nervous system in green and α-tubulinergic nervous system in red. E. Close-up of micrograph D. α-tubulinergic nervous system in red. On the right side innervation of a developing palp is shown. Additionally, displayed is the transition of cc to the ventral brain region. F. Close-up of the brain region, showing the prostomial nerves connecting the dorsal with the ventral brain region. cc – circumoesophageal connectives; cil – cilia of lips; dpbr – dorsal region of brain; drcc – dorsal root of cc; gl – glandular cells; ln – lateral nerves; pn – peripheral nerves; prn – prostomial nerves; stnl – stomatogastric nerve loop; te – buccal tentacles; tga – tentacular ganglion; tn – tentacular nerves; tu – tube; vncne – neurons of vnc, vpbr – ventral region of brain, vrcc – ventral root of cc