Osmoregulatory ability of Penaeus indicus H Milne Edwards in relation to varying salinities

Diwan, A D and Laxminarayana, A (1989) Osmoregulatory ability of Penaeus indicus H Milne Edwards in relation to varying salinities. Proceedings of the Indian Academy of Sciences( Animal Sciences), 98 (2). pp. 105-111.

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Abstract

Juvenile Penaeus indicus osmoregulated well between 3-26r .. S for 24 and 48 h duration with isosmotic points ~S 18r. . and ~S 14r. . respectively. Adults also showed good osmoregulatory capability between 5-30%0 S with isosmotic points ~S 2W .. and ~S 17%0 for 24 and 48 h duration respectively. A duration of 48 h is essential for prawns to adjust to the new medium. Influence of various neuroendocrine centres on the osmolal concentration of haemolymph was studied. In eyestalk ablated prawns osmolal concentration decreased with time and reached a lowest after 48 h. Eyestalk ablated prawns injected with extracts of eyestalk, brain and thoracic ganglia did not show any decrease in the values with time but remained on par with the values of normal ones.

Item Type: Article
Uncontrolled Keywords: Osmoregulatory ability; neuroendocrine control; Penaeus indicus
Subjects: Crustacean Fisheries > Prawn and Prawn fisheries
Divisions: CMFRI-Cochin > Marine Capture > Crustacean Fisheries
Subject Areas > CMFRI Brochures > CMFRI-Cochin > Marine Capture > Crustacean Fisheries
Depositing User: Arun Surendran
Date Deposited: 25 May 2011 06:15
Last Modified: 09 Sep 2015 15:49
URI: http://eprints.cmfri.org.in/id/eprint/8519

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