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Figure 18 | Frontiers in Zoology

Figure 18

From: The normal development of Platynereis dumerilii (Nereididae, Annelida)

Figure 18

Series of conventional light microscopy images of P. dumerilii , 58-66 hpf. The arrangement of the images is similar to figure 10. B, F, J, N, R: The chaetae (ch) rapidly increase in length and the chaetae of the third segment reach the posterior end of the larva, which marks the beginning of the late metatrochophore stage. F, J, N, R: Thee pairs of parapodia (pp) start forming laterally at the trunk. D, H, L, P: The amount of pigment in the adult eyes (ae) increases. T: The metatroch (black arrows) forms posterior to the prototroch at 66 hpf. Scale bar in all images 20 μm. Further abbreviations see abbreviations list.

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