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Time‐concentration interplay in insecticide resistance among populations of the Neotropical coffee leaf miner, Leucoptera coffeella
Author(s) -
Leite Suzany A.,
Santos Mateus P.,
Costa Daniela R.,
Moreira Aldenise A.,
Guedes Raul Narciso C.,
Castellani Maria A.
Publication year - 2021
Publication title -
agricultural and forest entomology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.755
H-Index - 55
eISSN - 1461-9563
pISSN - 1461-9555
DOI - 10.1111/afe.12425
Subject(s) - thiamethoxam , biology , pest analysis , resistance (ecology) , coffea arabica , leaf miner , chlorpyrifos , pesticide , toxicology , insecticide resistance , agronomy , botany , imidacloprid
Leucoptera coffeella is one of the main coffee pests in the Neotropical region and particularly important in crops cultivated under full sun, as in Brazil. The intensive use of insecticides in the last two decades, including molecules of recent use such as chlorantranilprole, has not been successful in suppressing this pest species. Thus, study aimed to detect insecticide resistance and determine the levels of resistance to commercial formulations of the insecticides chlorantraniliprole, chlorpyrifos and thiamethoxam in populations of L. coffeella from Arabica coffee fields in western and the highlands of the state Bahia (Brazil). Furthermore, as the expression of insecticide toxicity varies with the length of exposure and the compound concentration, what is frequently neglected, these two variables were considered while determining the levels of resistance in nine populations. Moderate levels of resistance were detected to chlorantranilprole in two populations, whereas the others exhibited low levels of resistance. All populations were resistant to thiamethoxam ranging from low to moderate levels. Low levels of resistance to chlorpyrifos were detected in all populations from western, but none from highlands region. The western presents a more concerning scenario of insecticide resistance the L. coffeella , but the phenomenon requires attention in both regions.