Ecological effect assessment by species sensitivity distribution for 38 pesticides with various modes of action

Species sensitivity distributions (SSDs) of 38 pesticides with various modes of action were analyzed as a higher-tier ecological effect assessment based on collected acute toxicity data. Then the 5% hazardous concentrations (HC5) based on each SSD were calculated as the predicted no-effect concentra...

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Bibliographic Details
Published in:Journal of Pesticide Science 2021/11/20, Vol.46(4), pp.366-372
Main Author: Nagai, Takashi
Format: Article
Language:English
Subjects:
Acute toxicity
Aquatic ecosystems
aquatic organisms
Ecological effects
Fungicides
Geographical distribution
hazardous concentration
Herbicides
Mode of action
Pesticides
registration criteria
Sensitivity analysis
SSD
Toxicity
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Summary:Species sensitivity distributions (SSDs) of 38 pesticides with various modes of action were analyzed as a higher-tier ecological effect assessment based on collected acute toxicity data. Then the 5% hazardous concentrations (HC5) based on each SSD were calculated as the predicted no-effect concentrations for aquatic ecosystems. The differences between HC5 and registration criteria were small (within ten-fold) for 35 of the 38 pesticides. However, there were more than ten-fold differences for a fungicide and two herbicides. These results suggest that the current effect assessment scheme could underestimate the effect of such pesticides. This could be caused by differences in sensitivity of specific properties of the mode of action.
ISSN:1348-589X
1349-0923
DOI:10.1584/jpestics.D21-034