Determination of enzymatic activity and biological and behavioral changes induced by the combination of acaricides with insecticides in Brevipalpus yothersi (Acari: Tenuipalpidae)

• Grant number: 18/06174-4
• Support Opportunities: Scholarships in Brazil - Doctorate
• Start date: March 01, 2019
• End date: June 30, 2021
• Field of knowledge: Agronomical Sciences - Agronomy - Plant Health
• Principal Investigator: Daniel Júnior de Andrade
• Grantee: Jaqueline Franciosi Della Vechia
• Host Institution: Faculdade de Ciências Agrárias e Veterinárias (FCAV). Universidade Estadual Paulista (UNESP). Campus de Jaboticabal. Jaboticabal , SP, Brazil
• Associated scholarship(s): 19/08384-9 - Characterization of detoxification enzymes activity induced in Brevipalpus yothersi (Acari: Tenuipalpidae) exposed to a combinations of acaricides and insecticides, BE.EP.DR

Abstract

The combination of pesticides in the spray tank is primarily aimed at reducing costs in agricultural activity. However, they may trigger reactions that lead to a reduction in the efficiency of pesticides, as observed in the management of the Brevipalpus yothersi citrus leprosis mite when exposed to the combination of acaricide and insecticide. Therefore, the objective of the project will be to determine the enzymatic activity and the biological and behavioral changes induced by the combination of acaricide with insecticides in B. yothersi. To do so, the lethal concentration curves of the insecticides cypermethrin, phosmet and imidacloprid and of the spirodiclofen acaricide isolated and the combination of each insecticide with the acaricide will be determined. Next, analyzes will be performed to determine the enzymes expressed in the mites exposed to the isolated and blended products, as well as to quantify the duration of inhibition of the enzyme (s). We will also evaluate the effect of different concentrations of different insecticides on the development and reproduction mortality of B. yothersi. The effect of the isolated and mixed products will be evaluated on different stages of development of the mites (eggs, larvae, nymphs, adults) and on the behavior of the mites. From these results it will be possible to determine the influence of this practice on the survival and reproduction of the mite, as well as the interval between the applications of insecticides and acaricides in order to reduce the interference between them.

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

ROCHA, CLAUDIANE M.; DELLA VECHIA, JAQUELINE F.; SAVI, PATRICE J.; OMOTO, CELSO; ANDRADE, DANIEL J.. Resistance to spirodiclofen in Brevipalpus yothersi (Acari: Tenuipalpidae) from Brazilian citrus groves: detection, monitoring, and population performance. Pest Management Science, v. 77, n. 7, p. 3099-3106, JUL 2021. (18/06174-4, 19/08384-9)

VECHIA, JAQUELINE F. DELLA; DE ANDRADE, DANIEL J.. Effect of acaricide and insecticide mixtures against citrus leprosis vector, Brevipalpus yothersi, under laboratory and field conditions. CROP PROTECTION, v. 161, p. 8-pg., 2022-08-19. (18/06174-4)

DELLA VECHIA, JAQUELINE F.; KAPP, ANA BEATRIZ P.; ROCHA, CLAUDIANE M.; ANDRADE, DANIEL J.. Side effects of insecticides alone or in a mixture with acaricide on life history traits and demographic parameters of Brevipalpus yothersi. SYSTEMATIC AND APPLIED ACAROLOGY, v. 28, n. 6, p. 19-pg., 2023-06-01. (18/06174-4)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

VECHIA, Jaqueline Franciosi Della. Interactions between acaricide and insecticides isolated or combined in Brevipalpus yothersi and Brevipalpus californicus (Acari: Tenuipalpidae): a study of biological and biochemical effects. 2021. Doctoral Thesis - Universidade Estadual Paulista (Unesp). Faculdade de Ciências Agrárias e Veterinárias. Jaboticabal Jaboticabal.