Sublethal effects of Artemisia annuaL. and Rosmarinus officinalisL. essential oils on life table parameters of Tetranychusurticae(Acari:Tetranychidae)

Esmaeily, Mojtaba; Bandani, Alireza; Zibaee, Idin; Sharifian, Iman; Zare, Shahnaz

doi:10.22073/pja.v6i1.23974

Sublethal effects of Artemisia annuaL. and Rosmarinus officinalisL. essential oils on life table parameters of Tetranychusurticae(Acari:Tetranychidae)

Authors

Mojtaba Esmaeily

Alireza Bandani

Idin Zibaee

Iman Sharifian

Shahnaz Zare

Department of Plant Protection, Faculty of Agriculture and Natural Resources, University of Tehran, Karaj, Iran;

10.22073/pja.v6i1.23974

Abstract

The two-spotted spider mite, Tetranychus urticae Koch (Acari: Tetranychidae) is one of the most important agricultural pests of the world. It causes direct and indirect damage on plants which decreases in photosynthesis and crop yield. The effect of sublethal concentrations of Artemisia annua L. (Asteraceae) and Rosmarinus officinalis L. (Lamiaceae) essential oils were assessed on development and reproduction para-meters of two-spotted spider mite T. urticae. Lethal and sublethal concentrations were estimated by fumigant bioassay of essential oils on the adults of T. urticae. The raw life history data of all individuals were analyzed according to the age-stage, two-sex life table theory. LC₃₀ and LC₅₀ of A. annua (2.908 and 4.14 µl/80 ml air) and R. officinalis (1.339 and 2.006 µl/80 ml air) showed that rosemary essential oil has higher fumigant toxicity against T. urticae. Sublethal concentration of the two plant oils led to significant decrease in fecundity, generation time and adult longevity compare to the control. In addition, plant oils decreased the net reproductive rate (R₀), intrinsic rate of increase (r), finite rate of increase (λ), and significantly increased doubling time (DT) of T. urticae in compare with control. Obtained results indicated that, sublethal concentra-tions of A. annua and R. officinalis oils could influence on biological indices of T. urticae.

Keywords

Asteraceae

Lamiaceae

population growth indices

sublethal dose

two-sex life table

two-spotted spider mite