Life table and predation capacity of Typhlodromus bagdasarjani (Acari: Phytoseiidae) feeding on Tetranychus urticae (Acari: Tetranychidae) on rose.

The life history and predation rate of the predatory mite,Typhlodromus bagdasarjaniWainstein & Arutunjan, fed on the eggs of two-spotted spider mite,Tetranychus urticaeKoch, were studied for both females and males under laboratory conditions at 25 ± 1°C, 75 ± 5% Relative Humidity (RH) and 16Light (L) : 8Dark (D) hour photoperiod. According to the age-stage, two-sex life table, the intrinsic rate of increase (r), finite rate of increase (λ), net reproductive rate (R0), gross reproductive rate (GRR) and mean generation time (T) were 0.143 day−1, 1.154 day−1, 12.91 offspring, 16.7 offspring and 17.8 days, respectively. Moreover, the number ofT. urticaeeggs consumed by different stages/sexes ofT. bagdasarjaniwas estimated using the age-stage, two-sex life table and indicated that the consumption rates increased from nymph to adult in both sexes. Also, our results showed that females consumed prey eggs 22 times more than males. The net predation rate (C0) and transformation rate from prey population to predator offspring (Qp) were 885.91 mite eggs and 68.62, respectively. The results showed thatT. bagdasarjanican successfully survive and reproduce onT. urticaeeggs on rose. [ABSTRACT FROM PUBLISHER]