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Evaluation of two monitoring approaches to assess effects of waste water disposal on histological alterations in fish

Bernet, D. and Schmidt-Posthaus, H. and Wahli, T. and Burkhardt-Holm, P.. (2004) Evaluation of two monitoring approaches to assess effects of waste water disposal on histological alterations in fish. Hydrobiologia, 524 (1). pp. 53-66.

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Abstract

An active monitoring (caging experiment) and a passive monitoring (sampling of wild fish ) were performed to investigate the effects of effluent from a sewage treatment works (STW) on brown trout (Salmo trutta) by histopathological examinations of the skin, gill, liver and kidney. Histopathological lesions were evaluated according to a standardised assessment tool, which allows calculation of indices for every organ. According to the results of both monitorings, trout exposed to river water supplemented with treated waste water from the STW Lyss showed higher histopathological indices than trout caught upstream of the discharge point of the STW or kept in river water only. These results indicate a negative effect of treated waste water from the STW on the histopathological status of the examined organs of brown trout. Both monitoring approaches revealed the liver to be the most affected organ compared with reference fish . However, data from the two monitoring approaches were not completely consistent: histologically the gills were the most sensitive organ to the effects of treated waste water in the active monitoring , but were not affected in the passive monitoring . The data provide relevant information about both the comparability and the pros and cons of the two monitoring approaches to assess effects of pollution on histopathological alterations in fish .
Faculties and Departments:05 Faculty of Science
05 Faculty of Science > Departement Umweltwissenschaften > Mensch Gesellschaft Umwelt MGU > Aquatische ├ľkologie (Holm)
UniBasel Contributors:Holm, Patricia
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Springer
ISSN:0018-8158
e-ISSN:1573-5117
Note:Publication type according to Uni Basel Research Database: Journal article
Language:English
Identification Number:
Last Modified:13 Nov 2017 10:22
Deposited On:24 Oct 2017 08:25

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