Activity of hyperglycemic hormone in the eyestalk of commercially important crab Portunus pelagicus (Linnaeus).

摘要

The role of hyperglycaemic hormones in the eyestalk ablated and intact control crabs of Portunus pelagicus were studied in relation to various external stimuli. The eyestalk ablated crabs showed lower free and reducing sugar levels and also lower haemolymph glucose levels when compared with the intact control crabs. The ablated crabs had significantly higher glucose levels than the normal crabs when injected with eyestalk extract (CHH). However, the ablated crabs showed lower glucose levels than the intact control crabs when exposed to chloroform stress. The polyacrylamide gel electrophoresis bands of crude eyestalk extracts and purified extracts showed a similar pattern of banding and protein nature.