preceded_by Platynereis life cycle stage late metatrochophore stage early nectochaete stage 66-75 en At a temperature of 18 C this stages lasts from 66.00 hours till 75.00 hours. Developmental stage following Late metatrochophore stage with the following key events: Parapodia start moving independently. Formation of the metatroch. Akrotroch fully developed. Rapid elongation of the trunk. Antennae not visible yet. Anlage of the proctodeum becomes visible. Occasionally larvae crawl using their parapodia. Much stronger pigmentation in the adult eyes. Lipid droplets move posteriorly. 1-2 pigmented spots at the basis of each parapodium. Dorsal and ventral roots of the circumesophageal connectives approach each other. Further serotonergic cells in the ventral nerve cord. Muscles form anteriorly to the stomodeum. PdumDv:0001100 platynereis_stage