Cytomorphic studies on the neurosecretory cells in the central nervous system of the Indian horseshoe crab Carcinoscorpius rotundicauda (Latrielle).
The central nervous system of Carcinoscorpius rotundicauda contains two types of NSCs (A and B) differing as regards their size, cytoarchitecture and distribution. They are clearly distinguishable when stained with azan and Masson's trichrome, but react weakly to PAF and CHP. The A cells are large, with fine cytoplasm granules (NSM), and are distributed below the perineurium, while the B cells are much smaller, contain coarse granules and are distributed in the vicinity of the neuropil. The posterior third of the circumoesophageal ring and the abdominal ganglia contain a far larger number of NSCs compared to the anterior part of the CNS. The ability of NSC groups to form numerous axon bundles, decussation of the neurosecretory axons, the presence of a rich capillary network round neurosecretory perikaryons and the appearance of atypical neurons in the anteromedian part of the CNS are further striking features discussed with reference to the neurosecretory phylogeny of the species in question.
Chaudhuri
P S
PS
Department of Zoology, Calcutta University, India.
Nanda
D K
DK
Debnath
R
R
D000818:Animals; D002490:Central Nervous System / Q000166:cytology*; D005260:Female; D006737:Horseshoe Crabs / Q000033:anatomy & histology*; D008297:Male; D009490:Neurosecretory Systems / Q000166:cytology*