Publication Details

Category Text Publication
Reference Category Journals
DOI 10.1016/j.scitotenv.2017.11.220
Title (Primary) Adaptation of Grammarus pulex to agricultural insecticide contamination in streams
Author Shahid, N.; Becker, J.M.; Krauss, M. ORCID logo ; Brack, W.; Liess, M.
Source Titel Science of the Total Environment
Year 2018
Department WANA; OEKOTOX
Volume 621
Page From 479
Page To 485
Language englisch
Keywords Neonicotinoids; Macroinvertebrates; Ecotoxicology; Gammarus pulex; SPEAR; Pesticide tolerance
UFZ wide themes RU3;
Abstract Exposure to pesticides affects non-target aquatic communities, with substantial consequences on ecosystem services. Adaptation of exposed populations may reduce the effects of pesticides. However, it is not known under which conditions adaptation occurs when only a low toxic pressure from pesticides is present. Here, we show that Gammarus pulex, a dominant macroinvertebrate species in many agricultural streams, acquires increased tolerance to pesticides when recolonization from non-contaminated refuge areas is low. Populations in the field that were exposed to pesticides at concentrations several orders of magnitude below considerable acute effects showed almost 3-fold higher tolerance to the neonicotinoid insecticide clothianidin (mean EC50 218 μg L− 1) compared with non-exposed populations (mean EC50 81 μg L− 1). This tolerance of exposed populations increased from 2- to 4-fold with increasing distance to the next refuge area (0 to 10 km). We conclude that the development of tolerance for non-target species may occur at very low concentrations, much below those affecting sensitive test organisms and also lower than those predicted to be safe by governmental risk assessment frameworks.
Persistent UFZ Identifier
Shahid, N., Becker, J.M., Krauss, M., Brack, W., Liess, M. (2018):
Adaptation of Grammarus pulex to agricultural insecticide contamination in streams
Sci. Total Environ. 621 , 479 - 485 10.1016/j.scitotenv.2017.11.220