Osmotic Regulation in Metapenaeus ensis

dc.contributor.author	Attygalle, M.V.E.
dc.date.accessioned	2013-03-04T05:32:44Z
dc.date.available	2013-03-04T05:32:44Z
dc.date.issued	1995
dc.identifier.citation	Attygalle, M.V.E. (1995). Osmotic Regulation in Metapenaeus ensis. Vidyodaya Journal of Science, 5(1), 21-27.	en-US
dc.identifier.uri	http://dr.lib.sjp.ac.lk/handle/123456789/846
dc.description.abstract	Experiments were conducted to determine salinity tolerance and some aspects of osmotic regulation in the prawn Metapenaeus ensis. 100% survival was observed in the full range of sea water concentrations (0-100% s. w.) at the end of the test period of 4 days. In distilled water survival was relatively short. In full sea water the haemolymph was virtually isotonic to the medium. This osmotic concentration was maintained as the medium was diluted to 30% sea water. In media more dilute than this haemolymph osmotic concentration fell rapidly but was markedly hypertonic to the medium. About 50% of the haemolymph osmotic concentration was accounted for by Na salts. The changes in haemolymph osmotic concentrations were partly due to the changes in sodium concentrations. The animals were found to be permeable to a certain degree and it was evident that regulatory mechanisms that actively adjust the composition of the haemolymph were present.	en_US
dc.language.iso	en	en_US
dc.subject	Salinity tolerance	en_US
dc.subject	Osmotic regulation	en_US
dc.title	Osmotic Regulation in Metapenaeus ensis	en_US
dc.type	Article	en_US