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Figure 1 | EvoDevo

Figure 1

From: Expression of FoxA and GATA transcription factors correlates with regionalized gut development in two lophotrochozoan marine worms: Chaetopterus (Annelida) and Themiste lageniformis (Sipuncula)

Figure 1

Early stages of larval gut development in Chaetopterus. (A) Lateral view schematics with anterior to the top and ventral to the left. Gut formation and regionalization in larval stages at 15 hours, L1 (18 to 36 hours), L2 (36 to 72 hours) and L3 (3 to 30 days). (B-I) DIC micrographs of larval stages corresponding to schematics in (A). (B, C, D, F, H) Lateral views with anterior to the top and ventral left; (E, G, I) ventral views with anterior to the top. an, anus; at, apical tuft; en, endoderm; hc, head coelom; hg, hindgut; lb, lateral bristle; lc, lateral hooked cilia; lo, larval ocellus; mg, midgut; mt, mesotroch; pyg, pygidium; st, stomodeum; tc, trunk coelom. Scale bars = 50 μm. Larval schematics modified from Irvine et al. [40].

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ISSN: 2041-9139