---

While searching for food, predators use herbivore induced plant volatiles (HIPV), host plant volatiles and those related to con/heterospecifics to find their prey. Not only the volatile components vary among plant species, but also the predator perception of these components might differ among species and samples. Here, we compared the olfactory response of two samples (Turkey and University of Tehran) of Phytoseiulus persimilis Athias-Henriot (Acari: Phytoseiidae) when received herbivore induced plant volatiles (HIPV) from Tetranychus urticae Koch (Acari: Tetranychidae) infested cucumber and bean leaves, along with testing the effect of rearing experience of Turkey sample on its olfactory response in our laboratory conditions. Our data showed that P. persimilis of both samples significantly moved towards leaf odors (either cucumber or bean) when they received clean air from the alternative arm. For both samples, the predator did not make a preference between clean bean and cucumber leaves. When the predators were offered a choice between T. urticae infested bean and cucumber leaves, they significantly moved towards bean leaves in both samples. Rearing experience did not affect the predator choice of host plant species and P. persimilis from both samples preferred odors related to clean leaves rather than clean air. The number of experienced predatory mites moved towards T. urticae infested bean leaves was significantly higher than that preferred T. urticae infested cucumber leaves in both samples. We discussed whether their similar olfactory responses would be related to their experience of previous rearing conditions.

---

The life history and predation rate were determined for all stages of female and male of Phytoseiulus persimilis Athias-Henriot fed on the eggs of Tetranychus urticae Koch ˗ as the preferred prey-stage ˗ on rose (cv ‘blarodje’) leaf discs under laboratory conditions at 25±1°C, 75±5% RH, and 16 L: 8 D hour photoperiod. According to the age-stage, two-sex life table model, 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 0.296 d^-1, 1.345 d^-1, 33.48 offspring, 53.87 offspring and 11.83 d, respectively. Moreover, average number of T. urticae eggs consumed by different stages/sexes of P. persimilis was calculated based on the age-stage, two-sex life table model and indicated that the consumption rates increased from nymph to adult in both sexes. Also, our results showed that females consumed prey eggs 11 times more than males. The net predation rate (C₀) and transformation rate from prey population to predator offspring (Q_p) were 363.54 mite eggs and 10.86, respectively. The results showed that P. persimilis can successfully survive and reproduce on T. urticae eggs on rose.