The correct definition of the risk(s) to non-target organisms has to be provided before a pesticide is approved. This assessment is essential, with a long-term perspective, to ensure (i) the absence of negative effects towards non-target organisms and (ii) that there are no adverse changes to the population or the function of the ecosystem. This concept includes the active substance and its relevant metabolites, refers to both vertebrate and non-vertebrate organisms and is typically carried out using model species. Beneficial organisms must receive particular attention in this framework. Furthermore, a correct definition of ecotox outcomes needs a following comparison to actual pesticide concentrations in environmental compartments to discriminate between acceptable and unacceptable impacts from pesticide use.

This session reports the most recent advances in ecotoxicology concerning birds and mammals, tiered risk assessment for aquatic and terrestrial organisms, as well as assessment on relevant metabolites.


Session Chairs

Gabriella Fait (EFSA, Italy)

Matteo Ottini (Expedia, Italy)


Program: September 5 – 11:00 – 12:40


Oral presentations

187“Modelling effects of pesticides for regulatory risk assessment: TKTD models and beyond” – Andreas Focks, Wageningen Environmental Research (The Netherlands)

230-“Aquatic risk assessment at catchment scale – case study on insecticide exposure concentrations and effects on macroinvertebrates” – Wim Beltman, Wageningen Environmental Research (The Netherlands)

281-“Investigating chemical mixture toxicity in bees: data collection, modelling, mechanistics basis and implications for risk assessment” – Edoardo Carnesecchi, Institute for Pharmacological Research Mario Negri IRCCS (Italy)

291-“Tackling some of the research gaps indentified in the EFSA scientific opinion on the risk assessment of in-soil organisms ” – Tiago Natal da Luz, University of Coimbra (Portugal)


Poster Presentations

278-“Explore the biological toxicity of a triazole pesticide, paclobutrazol, in zebrafish” – Wen-Der Wang, National Chiayi University (Taiwan)

183-“Effects of synthetic and natural pesticides on the soil microbial biomass and on earthworm Eisenia foetida” – Arianna De Bernardi, Università Politecnica delle Marche (Italy)

210-“Towards a coupled exposure and effect model for earthworms” – Christoph Oberdörster, BAYER AG (Deutchland)

239-“Subacute-Oral Toxicity of Thiamethoxam (ACTARA®) in Male Mice: Biochemical, Oxidative Damage and Histopathological Evaluations” – Gamal Elsayed Abouelghar, Menoufia University (Egypt)

252-“Degradation of alloxydim herbicide in chlorinated water. QSAR and ecotoxicity study of the main by-product” – Juan José Villaverde, INIA (Spain)

289 “Experimental investigation of the efficiency of agroforestry alley cropping systems in the reduction of excess pesticides from soil” – George Pavlidis, Benaki Phytopathological Institute (Greece)