Cyclic activity in the digestive diverticula of Sunetta scripta in accordance with tides

Dravidamani, M and Shanmugham, A and Kasinathan, R (1988) Cyclic activity in the digestive diverticula of Sunetta scripta in accordance with tides. CMFRI Bulletin, 42 (1). pp. 216-219.

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Abstract

Feeding and digestion in bivalves are considered to be continuous and simultaneous. The tide influenced physiological changes in the digestive diverticula of Sunetta scripts on the basis of histological observation was studied. The shape of the digestive diverticula changes in accordance with the tidal level. The maximum pH value in the mantle cavity was recorded at high tide (7.46) when the animal was covered by the almost static tidal water, the constancy in the pH of the mantle cavity was due to the renewal of the water in the mantle cavity. At low tide the pH gradually comes down to 6.87 due to the exposure of the animal and the subsequent non-renewal of water in the mantle cavity

Item Type:Article
Uncontrolled Keywords:Cyclic activity; digestive diverticula; Sunetta scripta
Subjects:Molluscan Fisheries
Divisions:CMFRI-Cochin > Marine Capture > Molluscan Fisheries
ID Code:2577
Deposited By:Dr. V Mohan
Deposited On:24 Aug 2010 13:25
Last Modified:24 Aug 2010 13:25

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