Four types of NS cells ('A', 'B', 'C' and 'D') in the brain, thoracic ganglion and four types ('alpha', 'beta', 'gamma' and 'delta') in the eye-stalk of Ocypoda platytarsis have been encountered. The cells in the brain occur in groups. Five groups have been noticed in the brain. Of the five groups the ventro-median group is unpaired and homogenous. In the other four one is unpaired and three are paired, and all are heterogenous. In the eyestalk the NS cells are distributed in 6 groups. They are MEX1, MIX1, MTX1, MTX2, MTX3 and MTX4. Of these MEX1 and MTX4 are homogenous. A battery of histochemical tests applied to NS cells revealed that the NS material is rich in carbohydrate moiety, disulfide groups, lipids, phospholipids and RNA. It contains little sulfhydryl groups, protein bound NH2 groups and no tyrosine, tryptophan and arginine.
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Histology and histochemistry of the intermoult integument in the ghost crab Ocypoda platytarsis (Milne-Edwards) (Crustacea: Brachyura).
Arch Ital Anat Embriol
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Department of Zoology, Andhra University, India.
The histological and histochemical aspects of the integument have been described and discussed during the intermoult period of Ocypoda platytarsis. Histological observations revealed that the cuticle comprises of four layers namely epicuticle, exocuticle, endocuticle and membranous layers. Various types of cells in the subepidermal tissue have also been elucidated.
View Article and Find Full Text PDFFour types of NS cells ('A', 'B', 'C' and 'D') in the brain, thoracic ganglion and four types ('alpha', 'beta', 'gamma' and 'delta') in the eye-stalk of Ocypoda platytarsis have been encountered. The cells in the brain occur in groups. Five groups have been noticed in the brain.
View Article and Find Full Text PDFInfluence of carbonates and other salts in tissues on the Schiff's reagent.
Acta Histochem
January 1976
Application of the Schiff's reagent on fresh and undecalcified cuticle of crustaceans such as Emerita asiatica and Ocypoda platytarsis showed positive results with their calcified layer which led to suggest that salts of calcium account for the staining. In vitro studies with carbonate and other salts furnished confirmatory evidence. It is suggested that in tests involving the Schiff's reagent proper removal of resident salts must be carried out.
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