Show simple item record

dc.contributor.authorKarels, Aarno
dc.date.accessioned2021-09-07T10:51:22Z
dc.date.available2021-09-07T10:51:22Z
dc.date.issued2000
dc.identifier.isbn978-951-39-8837-1
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/77689
dc.description.abstractFeral perch (Perea fluviatilis L.) and roach (Rutilus rutilus L.) populations, the fish community and experimentally exposed juvenile whitefish (Coregonus lavaretus L. s.l.) were studied in the recipient areas of three pulp and paper mills and at reference areas in the Southern Lake Saimaa, Finland. The mills used elemental chlorine free (ECF) bleaching and activated sludge effluent treatment technologies. The exposure of feral and caged fish to pulp mill effluents, as measured by concentrations of chlorophenolics in the bile and liver EROD activity, was low and almost the same as the reference levels. Nevertheless, resin acid concentrations in the bile of fish near one of the mills were 10-90 times higher compared to the reference points. Reproductive steroid hormones, measured at different reproductive stages, showed that plasma estradiol-17ß and testosterone concentrations were significantly lower in exposed perch and roach during periods of gonadal development. This coincided with a lower gonad size and fecundity in female perch. The gonad size in male perch, as well as the gonad size, egg size, fecundity and plasma and liver cytosol vitellogenin (VTG) in roach, however, remained unchanged. A higher liver size in exposed perch and roach suggests alterations in the metabolic and nutritional status of the fish. However, the body condition and hematological and immunological parameters of exposed fish were not affected. The perch population in the recipient of one of the mills exhibited an abnormal size and age distribution. Spawning behavior, growth and age at maturity of perch and roach was similar between mill and reference areas. The fish communities in the different study areas in the Southern Lake Saimaa were dominated (> 60%) by perch and roach. Biomass and fish densities were highest in the polluted area (5-15 km from the mills) and lowest in the reference area and close (2-5 km) to the mills. The number of species was similar among the areas. Species like bleak and ruffe were typical to the polluted area, while vendace, whitefish and minnow seemed to avoid polluted waters. The results indicate that, despite decreased exposure of fish to pulp mill effluents during the 1990s, the reproductive status, measured by serum steroid hormone levels, gonad size and fecundity, was affected in perch, and to a lesser extent in roach, living in the recipients of the mills. Although there are clear signs of recovery, it is evident that the fish communities and populations in the Southern Lake Saimaa still vary in relation to loading by pulp and paper mill effluents.en
dc.relation.ispartofseriesJyväskylä studies in biological and environmental science
dc.relation.haspart<b>Artikkeli I:</b> Karels, A., Lappivaara, J., Soimasuo, M., Aaltonen, T., Leppänen, H., Oikari, A., & Mellanen, P. (1998). Effects of ECF bleached kraft mill effluent on reproductive steroids and liver MFO activity in populations of perch and roach. <i>Ecotoxicology, 7, 123-132.</i> DOI: <a href="https://doi.org/10.1023/a:1014376825777"target="_blank">10.1023/a:1014376825777</a>
dc.relation.haspart<b>Artikkeli II:</b> Karels, A.E. & Oikari, A.O.J. (2000). Effects of pulp and paper mill effluents on the reproductive and physiological status of perch (Perea fluviatilis L.) and roach (Rutilus rutilus L.) during the spawning period. <i>Annales Zoologici Fennici, 37, 65-77.</i> <a href="http://www.annzool.net/PDF/anzf37/anzf37-065p.pdf"target="_blank">Full text</a>
dc.relation.haspart<b>Artikkeli III:</b> Karels, A.E., Markkula, E. & Oikari, A.O.J. (2001). Reproductive responses, bile metabolites and liver EROD activity in prespawning perch and roach exposed to pulp and paper mill effluents. <i>Environmental Toxicology and Chemistry, 20(7), 1517-1527.</i> DOI: <a href="https://doi.org/10.1002/etc.5620200715"target="_blank">10.1002/etc.5620200715</a>
dc.relation.haspart<b>Artikkeli IV:</b> Karels, A., Soimasuo, M. & Oikari, A. (2000). Biomarker responses in experimentally exposed fish and feral fish in a lake receiving pulp mill effluents. In <i>Stuthridge, T.R., Marvin, N.M., Slade, A.H. & Gifford, J.S. (eds). Aquatic Impacts of Pulp and Paper Effluents. Proceedings of the 3rd International Conference on Environmental Fate and Effects of Pulp and Paper Mill Effluents. SETAC press, Lewis Publishers, Boca Raton.</i>
dc.relation.haspart<b>Artikkeli V:</b> Karels, A., Soimasuo, M., Suutari, R. & Oikari, A. (2000). Monitoring the recovery of a lake with aid of fish biomarkers: Responses of whitefish (Coregonus lavaretus L. s.l.) experimentally exposed in a large lake receiving pulp and paper mill effluents. <i>Boreal Environment Research, 5(1), 53-65.</i> <a href="http://www.borenv.net/BER/archive/pdfs/ber5/ber5-053s.pdf"target="_blank">Full text</a>
dc.relation.haspart<b>Artikkeli VI:</b> Karels, A. & Niemi, A. (2002). Fish community responses to pulp and paper mill effluents at the Southern Lake Saimaa, Finland. <i>Environmental Pollution, 116(2), 309-317.</i> DOI: <a href="https://doi.org/10.1016/S0269-7491(01)00120-8"target="_blank">10.1016/S0269-7491(01)00120-8</a>
dc.titleEcotoxicity of pulp and paper mill effluents in fish : responses at biochemical, individual, population and community levels
dc.typeDiss.
dc.identifier.urnURN:ISBN:978-951-39-8837-1
dc.rights.accesslevelopenAccess
dc.date.digitised2021


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record