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چکیده
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Temperature influences on the developmental rate and reproductive potential of herbivorous insects and mites. Amblyseius swirskii Athias-Henriot (Acari: Phytoseiidae) is an important effective predator with a significant ability to suppress pest populations. To better understand the effect of temperature on the demographic traits of A. swirskii, we studied temperature-dependent population growth and reproductive potential of the predatory mite under six constant temperatures (20, 22, 25, 27, 30, and 32°C), providing 75 ± 5% RH and a photoperiod of 16 L: 8 D h. The data were analyzed according to the age-stage, two-sex life table theory. Mated females laid an average of 12.85, 18.24, 22.2, 27.24, 28.6, and 52.57 eggs per female at 20–32°C, respectively. The highest value of the gross reproductive rate (GRR= 26.08 eggs/individual), net reproductive rate (R0= 22.51 eggs/individual), and intrinsic rate of increase (r= 0.174 day−1) was recorded at 27°C. The finite rate of increase (λ) and mean generation time (T) of A. swirskii were considerably affected by temperature. The lowest finite rate of increase (λ) value were observed at 20°C (1.101 day−1), whereas the highest value were obtained at 27°C (1.190 day−1). This study indicates that 27°C is the best temperature for rearing this predatory mite. Current study expands our knowledge of the temperature range to optimize the mass rearing of A. swirskii as an important predatory mite.
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