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Figure 5 | BMC Evolutionary Biology

Figure 5

From: Development of the nervous system in Phoronopsis harmeri (Lophotrochozoa, Phoronida) reveals both deuterostome- and trochozoan-like features

Figure 5

Schemes of the development of serotonin-like (A-C) and FMRFamide-like (D-F) immunoreactive nervous system in  Phoronopsis harmeri  . (A, D) Young actinotrocha. (B, E) 6-day-old actinotroch larva. (C, F) 24-day-old actinotroch larva. Color code: yellow – apical organ; pink – tentacular neurite bundles; light green – telotroch neurites; dark green – nerve net and circular neurites around the proctodaeum; cyan – ventral neurite bundles; pale blue – oral nerve ring; dark blue – marginal neurite bundles of the preoral lobe edge, lateral (ln) and ventro-lateral (vln) neurites of the oral field, upper ventro-lateral perikarya (uvl), and lower ventro-lateral perikarya (lvl); brown – trunk neurites; magenta – median neurite bundle (men) with perikarya, neurites, and perikarya of the preoral lobe; orange – large perikarya near the mouth (lp). Abbreviations: lc – motionless long cilia along the tentacular ridge; np – neuropile; t – tentacle; tn – trunk; tr – tentacular ridge; tt – telotroch with cilia.

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