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Abstract

The toxicity of the insecticide chlorantraniliprole and its formulated product Altacor® was determined for the Cladoceran, Ceriodaphnia dubia Richard. Acute toxicity (48 h) and 21 d population studies were conducted. The hypothesis of this study was that these two compounds would have different toxicities. We conducted acute and chronic toxicity studies for each compound and compared the results to test this hypothesis. 48 h LC50s (95% CL) for chlorantraniliprole and Altacor® were 8.5 (6.6–11.5) and 6.0 (3.7-9.0) µg chlorantraniliprole/L water, respectively. Therefore, chlorantraniliprole and Altacor® were equitoxic to C. dubia at LC50 based on overlap of the 95% CL. In the population study, chlorantraniliprole and Altacor® concentrations equivalent to the acute LC5, 10, 25, and 50 for each product were evaluated on populations of C. dubia. Number of individuals after 21 d was the endpoint evaluated. T-tests conducted at each LC value indicated that there was no significant difference in population size between these two products at each LC value evaluated. Previous studies show that toxicity can vary greatly between formulated and technical grade pesticides. However, our results show that chlorantraniliprole and its formulated product, Altacor® were equally toxic to C. dubia. Therefore, making assumptions about the toxicity of formulated and unformulated products is ill advised.

Details

Title
Toxicity of Chlorantraniliprole and it’s Formulated Product, Altacor®, to Individuals and Populations of Ceriodaphnia Dubia Richard
Author
Stark, John D. 1 ; Qiao, Mu 1 ; Banks, John E. 2 

1  Washington State University, Ecotoxicology Program, Department of Entomology, Research and Extension Center, Puyallup, USA (GRID:grid.30064.31) (ISNI:0000 0001 2157 6568) 
2  California State University, Seaside, USA (GRID:grid.253562.5) (ISNI:0000 0004 0385 7165) 
Pages
996-1000
Publication year
2022
Publication date
Dec 2022
Publisher
Springer Nature B.V.
ISSN
00074861
e-ISSN
14320800
Source type
Scholarly Journal
Language of publication
English
DOI
https://doi.org/10.1007/s00128-022-03614-3
ProQuest document ID
2739290819
Copyright
© The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2022. Springer Nature or its licensor holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.