Effects of a herbicide and copper mixture on the quality of marine plankton
Filimonova, V.; De Troch, M.; Gonçalves, F.; Marques, J.C.; Marques, S.M.; Gonçalves, A.M.M.; De Laender, F. (2018). Effects of a herbicide and copper mixture on the quality of marine plankton. Ecotoxicol. Environ. Saf. 156: 9-17. https://dx.doi.org/10.1016/j.ecoenv.2018.02.038
In: Ecotoxicology and Environmental Safety. Academic Press/Elsevier: Amsterdam, Netherlands etc. ISSN 0147-6513; e-ISSN 1090-2414
Pesticides and metals are often used in agriculture and are therefore often simultaneously discharged to nearby estuarine and marine areas. The effects of this organic-inorganic chemical mixture on food quality of aquatic organisms are currently unknown. In this study we test if a mixture of copper (inorganic) and the herbicide Primextra® Gold TZ (organic) affects the quality of the diatom Thalassiosira weissflogii and the copepod Acartia tonsa - two key species that fuel the local food-web. We quantified quality (i.e. energy content as food for the next trophic level) in terms of fatty acids, proteins and thiobarbituric acid reacting substances. We found non-additive effects (positive and negative) of the metal-herbicide mixture on the diatom and copepod species. In general, nutritionally important biochemical parameters of Acartia tonsa were most sensitive to the chemical stressors.
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