Oxidative Stress and Bioindicators of Reproductive Function in Pulp and Paper Mill Effluent Exposed White Sucker
This study investigates oxidative stress and bioindicators of reproductive function in wild white sucker (Catostomus commer-soni) collected from environments receiving pulp and paper mill effluent discharges in northern Ontario. Samples were collected over an eight-year period adjacent to three pulp...
| Main Authors: | , |
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| Other Authors: | |
| Format: | Text |
| Language: | English |
| Published: |
2003
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| Subjects: | |
| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.570.1789 http://toxsci.oxfordjournals.org/content/74/1/51.full.pdf |
| Summary: | This study investigates oxidative stress and bioindicators of reproductive function in wild white sucker (Catostomus commer-soni) collected from environments receiving pulp and paper mill effluent discharges in northern Ontario. Samples were collected over an eight-year period adjacent to three pulp and paper mills using a variety of processing and bleaching techniques. Fish col-lected downstream of pulp and paper mills within the Moose River basin exhibited elevated hepatic and gonadal 2-thiobarbituric acid reactive substances (TBARS), the presence of which is indicative of oxidative stress in these tissues. Within the Jackfish Bay system, exposure to pulp and paper mill effluent did not elevate hepatic or gonadal TBARS. Hepatic cytochrome P4501A activity (CYP1A) and fatty acyl-CoA oxidase (FAO) activities were frequently in-creased in livers of Moose River basin fish exposed to pulp and paper mill effluent, while lower activities of both enzymes were |
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