Show simple item record

dc.contributor.authorVerlecar, X.N.
dc.contributor.authorDas, P.B.
dc.contributor.authorJena, K.
dc.contributor.authorMaharana, D.
dc.contributor.authorDesai, S.R.
dc.date.accessioned2013-01-08T04:51:31Z
dc.date.available2013-01-08T04:51:31Z
dc.date.issued2012
dc.identifier.citationTurkish Journal of Biology, vol.36; 2012; 711-718
dc.identifier.urihttp://drs.nio.org/drs/handle/2264/4212
dc.description.abstractAntioxidant responses in the estuarine mysid, Mesopodopsis zeylanica, were used to assess mercury (Hg) metal contamination in relation to salinity. Natural mysids acclimatized at 5 psu were subjected to laboratory exposures of 5, 15, and 25 psu salinity singly and under the sublethal Hg concentration of 5 mu g/L (one-fifth of 24 h LC sub(50) value). Lipid peroxidation in the test species increased with salinity variation from 5 to 15 psu and retained the same up to 25 psu with no change after Hg addition. CAT increased significantly from 5 to 15 psu before Hg influence, and GST increased after addition of the metal. However, a reduction in both these enzymes is evident at higher salinities (25 psu) with or without Hg. The energy cost involved in adjusting ionic concentration with hemolymph during salinity deviation from an isotonic environment could be a cause for the reduction of antioxidants and LPX accumulation at 25 psu. Insignificant changes after Hg addition, however, indicate that Hg sup(2+) free ions did not produce much toxicity to the cellular system. The results suggest that M. zeylanica is comfortable scavenging oxyradicals within the salinity range of 5-15 psu to protect itself from anthropogenic contaminants as evidenced by elevated enzyme activity.
dc.language.isoen
dc.publisherThe Scientific and Technological Research Council of Turkey
dc.rights© TÜBİTAK. Freely available at publisher site at http://dx.doi.org/10.3906/biy-1203-63. All efforts have been made to respect the copyright to the best of our knowledge. Inadvertent omissions, if brought to our notice, stand for correction and withdrawal of document from this repository.
dc.subjectsalinity
dc.subjectmercury
dc.subjectlipids
dc.subjectantioxidants
dc.titleAntioxidant responses in Mesopodopsis zeylanica at varying salinity to detect mercury influence in culture ponds
dc.typeJournal Article


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record