Lethaland sublethal effects of cyflumetofenandclofentezineonlife table parameters of Tetranychusurticae(Acari: Tetranychidae)

Saber, Moosa; Ahmadi, Zeinab; Farshbaf Pourabad, Reza; Mousavi, Mozhgan

doi:10.22073/pja.v13i4.81499

Lethaland sublethal effects of cyflumetofenandclofentezineonlife table parameters of Tetranychusurticae(Acari: Tetranychidae)

Authors

Moosa Saber ¹

Zeinab Ahmadi ¹

Reza Farshbaf Pourabad ²

Mozhgan Mousavi ³

¹ University of Tabriz

² Department of Plant Protection, Faculty of Agriculture, Ege University, 35100, Izmir, Türkiye

³ Agriculture and Agri-food Canada

10.22073/pja.v13i4.81499

Abstract

Effects of cyflumetofen and clofentezine were evaluated on Tetranychus urticae Koch, under laboratory conditions. LC₅₀ values of cyflumetofen and clofentezine against eggs were 0.8 µg a.i./mL and 0.42 µg a.i./mL, respectively. Sublethal effects of these compounds on the life table parameters of T. urticae were evaluated by exposing mites to LC₅₀ and LC₂₅ concentrations. The developmental time of male and female T. urticae were significantly affected by both acaricides. Moreover, exposure to LC₂₅ and LC₅₀ concentrations of cyflumetofen or clofentezine significantly reduced net reproductive rate (R₀), finite rate of increase (λ), and intrinsic rate of increase (r). The LC₂₅ and LC₅₀ treatments showed strong effects on both survivorship, fecundity, and intrinsic rate of increase. Our findings indicated that lethal and sublethal exposure to cyflumetofen or clofentezine result in significant alteration of life-history characteristics of T. urticae. Our findings suggest that these acaricides are promising candidates for use in management programs of this major pest.

Keywords

Acaricide

biological effect

bioassay

herbivorous mites

two-spotted spider mite