Publication Details

Reference Category Journals
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Title (Primary) Culmination of low-dose pesticide effects
Author Liess, M.; Foit, K.; Becker, A.; Hassold, E.; Dolciotti, I.; Kattwinkel, M.; Duquesne, S.;
Journal Environmental Science & Technology
Year 2013
Department OESA; OEKOTOX;
Volume 47
Issue 15
Language englisch;
POF III (all) T42; T11;
UFZ wide themes RU3;

Pesticides applied in agriculture can affect the structure and function of non-target populations at lower doses and for longer timespans than predicted by the current risk assessment frameworks. We identified a mechanism for this observation. The populations of an aquatic invertebrate (Culex pipiens) exposed over several generations to repeated pulses of low concentrations of the neonicotinoid insecticide (thiacloprid) continuously declined and did not recover in the presence of a less sensitive competing species (Daphnia magna). By contrast, in the absence of a competitor, insecticide effects on the more sensitive species were only observed at concentrations one order of magnitude higher, and the species recovered more rapidly after a contamination event. The underlying processes are experimentally identified and reconstructed using a simulation model. We conclude that repeated toxicant pulse of populations that are challenged with interspecific competition may result in a multigenerational culmination of low-dose effects.

ID 13859
Persistent UFZ Identifier
Liess, M., Foit, K., Becker, A., Hassold, E., Dolciotti, I., Kattwinkel, M., Duquesne, S. (2013):
Culmination of low-dose pesticide effects
Environ. Sci. Technol. 47 (15), 8862 - 8868