Variants in the histochemical patterns of lipids in the hepatopancreas of Scylla serrata (Forskal) (Brachyura, Decapoda).

The highest concentrations of phospholipid, neutral lipid, and fatty acids were found in the R cells and connective tissue of the hepatopancreas of Scylla serrata.

• The basal parts of B cells and the apical parts of duct-lining cells showed moderate lipid presence.
• E cells were largely devoid of lipids, except at their cell membranes.
• F cells displayed lipoid complexes.
• Fatty acid staining intensity decreased 4 hours after bilateral eyestalk ablation.
• Neutral lipid levels depleted 24 hours post-operation, while phospholipid reserves increased 48 hours after eyestalk removal.
• Eyestalk extract injection led to a notable decline in neutral lipid and phospholipid quantities.

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