پارامترهای رشد جمعیت و ظرفیت شکارگری کنه شکارگر Amblyseius swirskii (Phytoseiidae) با تغذیه از کنه گیاه‌خوار Cenopalpus irani Dosse (Tenuepalpidae) پرورش داده شده روی دو رقم سیب

The life table parameters and predation capacity of Amblyseius swirskii Athias-Henriot (Phytoseiidae) fed on Cenopalpus irani Dosse (Tenuipalpidae) nymphs reared on two apple cultivars (Kohanz Golab and Fuji) under laboratory conditions at 25±1ºC, 60±10% RH, and a photoperiod of 16: 8 h (L: D). The obtained demographic data were analyzed using the two-sex life table. The Population growth parameters was significantly influenced by two apple cultivars. A significant difference was observed between the net reproductive rate (R0) on two apple cultivars. The highest and lowest net reproductive rate (R0) were obtained on Fuji (14.86 eggs/individual) and Kohanz Golab (11.08 eggs/individual), respectively. The intrinsic rate of increase (r) ranged from 0.123 day-1 on Kohanz Golab to 0.189 day-1 on Fuji. The mean generation time (T) on Kohanz Golab and Fuji cultivars was 14.25 and 19.60 days, respectively. The highest and lowest finite rate of increase (λ) were obtained on Fuji (1.277 day-1) and Kohanz Golab (1.163 day-1), respectively. The total prey consumption by all immature stages on Kohanz Golab and Fuji was 40.27 and 49.85 prey, respectively. The total prey consumption by adult females was 663.96 prey on Kohanz Golab and 520.13 prey on Fuji. The results of the data analysis of two apple cultivars based on some demographic parameters of A. swirskii mite showed that predator performance was strongly affected by feeding on C. irani mites reared on different apple cultivars, and also a significant difference was seen in the hunting capacity of A. swirskii on different apple cultivars. The findings of the present study provide new information to design a more comprehensive IPM program for this pest in apple orchards.