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 |