Ciliary and nerve structures were described in juvenile female Dinophilus gyrociliatus (O. Schmidt, 1848) after immunochemical staining with tubulin, serotonin, and FMRFamide antibodies. Anti-tubulin antibodies revealed the following external structures: two head and seven body ciliary bands, a ventral ciliary band, and head ciliary fields. Gut cilia and five pairs of protonephridia were detected inside the body. The nervous system consists of an oval headed neuropile with anterior and posterior nerves extending from it, seven longitudinal nerve cords, commissures, and circular nerves. Anti-serotonin antibodies revealed the head neuropile, neurons at the base of the ventral ciliary band, an oesophageal ring, and seven longitudinal ventral cords. Anti-FMRFamide antibodies revealed approximately ten neurons in the cerebral ganglion, five longitudinal cords, and the oesophageal and caudal-nerve rings. The presented data suggest the simplification of the nervous system structure in D. gyrociliatus, which probably reflects pedomorphosis.
Russian Journal of Marine Biology – Springer Journals
Published: Apr 5, 2014
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