Temporal patterns of imidacloprid resistance throughout a growing season in Leptinotarsa decemlineata populations

1.

The authors of the article “Temporal patterns of imidacloprid resistance throughout a growing season in Leptinotarsa decemlineata populations” (DOI: 10.1002/ps.4480),1 published in Wiley Online Library on 30 December 2016 and in Pest Management Science, 73: 641–650, have drawn our attention to an error in the conversion of concentrations of insecticide stocks. To follow journal guidelines all concentrations were converted from parts per million (PPM) to µg/µl before publication. The conversion to µg/µl was made under the assumption that parts per million referred to moles solute per moles solvent. In reality PPM referred instead to mass solute/mass solvent. While this does not change any of the conclusions within the manuscript, it slightly alters the numerical values for the LC₅₀. The conversion mistake can be corrected by simply multiplying the concentration of the solutions or the LC₅₀ values by 0.227. The authors apologize for the oversight.