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Figure 11 | Frontiers in Zoology

Figure 11

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

Figure 11

Ventral nerve cord and muscle development of P. dumerilii , 32-38 hpf, ventral view, anterior up. The age of the larvae in each row is given in the lower left corner of the first picture of each row. The displayed staining is indicated at the bottom of each column. A, G, M, S: The connectives (con) show an increasing staining intensity (compare the tubulin staining at the different time points). S: The first commissure (1com) of the ventral nerve cord is formed. B, H, N, T: Only one serotonergic cell is visible in the ventral nerve cord (white star). C, D, G, D, I, J, O, P, U, V: The dorsal longitudinal muscles (dlm) increase in length and the ventral longitudinal muscles (vlm) become clearly visible by phalloidin staining at 32 hpf. E, F, K, L, Q, R, W, X: The stomodeal field (sf) gets located more anteriorly between 32 hpf and 38 hpf and cells start to form a circle in the stomodeal field. CLSM microscopy, maximum projection, Imaris surpass mode. Scale bar in all images 20 μm. Further abbreviations see abbreviations list.

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