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Impact of natural organic matter (NOM) on freshwater amphipods
- Source :
-
Science of the Total Environment . Feb2004, Vol. 319 Issue 1-3, p115. 7p. - Publication Year :
- 2004
-
Abstract
- Natural organic matter (NOM) isolated from the eutrophic Sanctuary Pond (Point Pelee National Park, Canada) has an adverse impact on amphipod species (Gammarus tigrinus and Chaetogammarus ischnus from Lake Mu¨ggelsee, Germany, and Eulimnogammarus cyaneus, from Lake Baikal, Russia). Increases in amphipod mortality, changes in peroxidase activity and increases of heat shock protein (hsp70) expression were observed upon exposure to NOM. The highest resistance to the adverse impact of NOM was observed with the endemic Baikalian amphipod E. cyaneus. However, the mechanisms behind this finding remains obscure. If differences in the sensitivity of the hsp70 antibody may be excluded, different modes of action may be postulated: because the adverse impact of NOM may be caused by reactive oxygen species (ROS) and the NOM itself, the observed differences may be due to the action of ROS alone (with E. cyaneus) and a combination of both adverse modes of action (European species). [Copyright &y& Elsevier]
- Subjects :
- *BIOTRANSFORMATION (Metabolism)
*MICROBIAL sensitivity tests
*PONDS
Subjects
Details
- Language :
- English
- ISSN :
- 00489697
- Volume :
- 319
- Issue :
- 1-3
- Database :
- Academic Search Index
- Journal :
- Science of the Total Environment
- Publication Type :
- Academic Journal
- Accession number :
- 12169840
- Full Text :
- https://doi.org/10.1016/S0048-9697(03)00444-3