Linha Básica de Suscetibilidade de Chrysodeixis includens (Walker, [1858]) (Lepidoptera: Noctuidae) a Benzoato de Emamectina

Naiara R. Nunes; Fátima T. Rampelotti-Ferreira; Leonardo V. Thiesen; Janaina N. Corassa; Rafael M. Pitta

doi:10.37486/2675-1305.ec01015

Authors

Naiara R. Nunes Universidade Federal de Mato Grosso https://orcid.org/0000-0002-1822-5406
Fátima T. Rampelotti-Ferreira Universidade Federal de Mato Grosso https://orcid.org/0000-0002-3118-9446
Leonardo V. Thiesen Faculdade de Ciências Agrárias e Veterinária https://orcid.org/0000-0002-8782-6061
Janaina N. Corassa Universidade Federal de Mato Grosso https://orcid.org/0000-0002-1013-5414
Rafael M. Pitta Embrapa Agrossilvipastoril, Sinop-MT, Brasil https://orcid.org/0000-0002-8503-7106

DOI:

https://doi.org/10.37486/2675-1305.ec01015

Keywords:

Resistance management, monitoring, avermectin, soybean looper

Abstract

Emamectin Benzoate was registered recently in Brazil to control Chrysodeixis includens (Walker, [1858]) (Lepidoptera: Noctuidae) in soybean. We studied the baseline susceptibility of Mato Grosso populations of C. includes to support Insect Resistance Management programs by standard feeding assays on insecticide-surface of artificial diet. Variation in susceptibility between populations was low. The LC50 values from 11 populations varied between 0.015 a 0.065 µg i.a. cm^-2. Based on our results, we propose the discriminant concentration of 2.867 µg i.a. cm^-2 of emamectin benzoate to monitor insecticide resistance in C. includes.