Table 3.
Comparative expression patterns of neuropeptide precursors in A. rubens brachiolaria, in association with known structures of the brachiolaria nervous system.
| Neuropeptide precursor | Lateral ganglia | Brachia | Adhesive disk | Basi-epithelial nerve plexus under adhesive disk | Ciliary bands, body wall | |
|---|---|---|---|---|---|---|
| Tip | Stem | |||||
| S1 | + | +/− | + | − | + | + |
| S2 | + | − | + | + | + | + |
| Asterotocin | − | + | − | + | + | − |
| NGFFYamide | − | − | − | − | + | + |
| TRH | − | − | + | − | + | + |
| GnRH | − | − | − | − | + | − |
| Calcitonin | − | − | − | + | + | − |
| CRH | − | + | + | − | + | − |
+, expression registered; −, no expression; +/−, S1 precursor is expressed in the tips of only lateral brachia.