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Spinosad and the tomato borer Tuta absoluta: a bioinsecticide, an invasive pest threat, and high insecticide resistance

Campos, Mateus R ; Rodrigues, Agna Rita S ; Silva, Wellington M ; Silva, Tadeu Barbosa M ; Silva, Vitória Regina F ; Guedes, Raul Narciso C ; Siqueira, Herbert Alvaro A Zhang, Youjun

PloS one, 2014-08, Vol.9 (8), p.e103235 [Periódico revisado por pares]

United States: Public Library of Science

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Título:
Spinosad and the tomato borer Tuta absoluta: a bioinsecticide, an invasive pest threat, and high insecticide resistance
Autor: Campos, Mateus R ; Rodrigues, Agna Rita S ; Silva, Wellington M ; Silva, Tadeu Barbosa M ; Silva, Vitória Regina F ; Guedes, Raul Narciso C ; Siqueira, Herbert Alvaro A
Zhang, Youjun
Assuntos: Agricultural economics ; Agricultural ecosystems ; Agricultural management ; Agricultural production ; Agrochemicals ; Animals ; Bacillus ; Biology and Life Sciences ; Borers ; Brazil ; Cross-resistance ; Cytochrome ; Cytochrome P-450 Enzyme System - metabolism ; Cytochrome P450 ; Detoxification ; Drug Combinations ; Ecology and Environmental Sciences ; Esterases ; Heredity ; Heritability ; Insecticide resistance ; Insecticide Resistance - physiology ; Insecticides ; Insecticides - pharmacology ; Invasive species ; Larva - drug effects ; Larva - metabolism ; Lepidoptera ; Lepidoptera - drug effects ; Lepidoptera - metabolism ; Lycopersicon esculentum - parasitology ; Macrolides - pharmacology ; Management ; Mixed Function Oxygenases - metabolism ; Pest Control, Biological - methods ; Pesticide resistance ; Pests ; Phenotypes ; Plutella xylostella ; Plutellidae ; Populations ; Quantitative genetics ; Spinosad ; Titration ; Tomatoes ; Trends ; Tuta absoluta
É parte de: PloS one, 2014-08, Vol.9 (8), p.e103235
Notas: Conceived and designed the experiments: MRC ARSR HAAS. Performed the experiments: MRC TBMS WMS VRFS. Analyzed the data: MRC ARSR TBMS WMS HAAS. Contributed reagents/materials/analysis tools: RNCG HAAS. Contributed to the writing of the manuscript: MRC ARSR RNCG HAAS.
Competing Interests: Dr. Raul Narciso C. Guedes is currently an academic editor of PLOS ONE, but this does not alter the authors’ adherence to all the PLOS ONE policies on sharing data and materials.
Descrição: The introduction of an agricultural pest species into a new environment is a potential threat to agroecosystems of the invaded area. The phytosanitary concern is even greater if the introduced pest's phenotype expresses traits that will impair the management of that species. The invasive tomato borer, Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae), is one such species and the characterization of the insecticide resistance prevailing in the area of origin is important to guide management efforts in new areas of introduction. The spinosad is one the main insecticides currently used in Brazil for control of the tomato borer; Brazil is the likely source of the introduction of the tomato borer into Europe. For this reason, spinosad resistance in Brazilian populations of this species was characterized. Spinosad resistance has been reported in Brazilian field populations of this pest species, and one resistant population that was used in this study was subjected to an additional seven generations of selection for spinosad resistance reaching levels over 180,000-fold. Inheritance studies indicated that spinosad resistance is monogenic, incompletely recessive and autosomal with high heritability (h(2) = 0.71). Spinosad resistance was unstable without selection pressure with a negative rate of change in the resistance level ( = -0.51) indicating an associated adaptive cost. Esterases and cytochrome P450-dependent monooxygenases titration decreased with spinosad selection, indicating that these detoxification enzymes are not the underlying resistance mechanism. Furthermore, the cross-resistance spectrum was restricted to the insecticide spinetoram, another spinosyn, suggesting that altered target site may be the mechanism involved. Therefore, the suspension of spinosyn use against the tomato borer would be a useful component in spinosad resistance management for this species. Spinosad use against this species in introduced areas should be carefully monitored to prevent rapid selection of high levels of resistance and the potential for its spread to new areas.
Editor: United States: Public Library of Science
Idioma: Inglês

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Spinosad and the tomato borer Tuta absoluta: a bioinsecticide, an invasive pest threat, and high insecticide resistance

Campos, Mateus R ; Rodrigues, Agna Rita S ; Silva, Wellington M ; Silva, Tadeu Barbosa M ; Silva, Vitória Regina F ; Guedes, Raul Narciso C ; Siqueira, Herbert Alvaro A Zhang, Youjun

United States: Public Library of Science

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