Associations between pharmaceutical contaminants, parasite load and health status in brown trout exposed to sewage effluent in a small stream

0533425 - ÚBO 2022 RIV PL eng J - Journal Article
Pravdová, Markéta - Kolářová, J. - Grabicová, K. - Mikl, Libor - Bláha, M. - Randák, T. - Kvach, Yuriy - Jurajda, Pavel - Ondračková, Markéta
Associations between pharmaceutical contaminants, parasite load and health status in brown trout exposed to sewage effluent in a small stream.
Ecohydrology & Hydrobiology. Roč. 21, č. 2 (2021), s. 233-243. ISSN 1642-3593. E-ISSN 2080-3397
R&D Projects: GA ČR(CZ) GBP505/12/G112
Institutional support: RVO:68081766
Keywords : Aquatic pollution * Brown trout * Health indicators * Parasites * Pharmaceuticals * Sewage treatment plants
OECD category: Fishery
Impact factor: 2.957, year: 2021
Method of publishing: Limited access
https://www.sciencedirect.com/science/article/pii/S1642359320300768?via%3Dihub

Owing to their widespread use, pharmaceuticals have become important pollutants of the aquatic environment. Pharmaceuticals and parasites can affect the immunity, physiology and behaviour of target organisms, both singly and through interaction. In this study, we related pharmaceutical concentration, parasite infection and condition in brown trout (Salmo trutta m. fario) collected at localities upstream and downstream of a sewage treatment plant (STP). The sites were separated by a weir preventing fish migration. Pharmaceutical number and concentrations differed significantly between sites. Antibiotics and antidepressants were found at the highest concentrations at both localities. Though fish condition and overall parasite abundance did not differ between sites, there was a significant difference in parasite community composition. A higher abundance of monogenean ectoparasites, along with a lower abundance of endoparasites, was observed at the downstream locality. The adverse effect of pharmaceutical load on ecto- and endoparasitic species on brown trout was further confirmed at the individual level using multivariate analysis. Both the number and concentration of pharmaceuticals in fish tissues reflected their high incidence in the environment, confirming the ability of trout to bioaccumulate pharmaceuticals. This could have important consequences on fish health, particularly in small streams where STP effluent represents a high proportion of stream flow.
Permanent Link: http://hdl.handle.net/11104/0311811