The two-spotted spider mite, Tetranychus urticae Koch, is a constant threat to sustainable production of numerous economically important crops globally. Management T. heavily reliant on the application synthetic acaricides. However, has rapidly developed resistance most acaricides available for its control due very broad host plant range, extremely short lifecycle, high fecundity, arrhenotokous...

repeatability, (the consistency with which a given trait is expressed) of aggressiveness against prey (attack latency) in gravid females of the predatory mite neoseiulus californicus (mcgregor) was examined. in two experiments, prey - conspecific individuals, the onion thrips thrips tabaci (lindeman), and the two-spotted spider mite tetranychus urticae koch- were repeatedly offered in various n...

the effect of fenpyroximate on life table parameters of two-spotted spider mite tetranychus urticae koch was evaluated under laboratory conditions (25±20c, 60±5% rh and 16:8 l:d). data were analyzed on the basis of age-stage, two-sex life table theory. the estimated value of lc50 for t. urticae was found to be 380 ml/l. durations of total preadult stage and preoviposition period in t. urticae t...

The functional and numerical responses of the predatory mite Neoseiulus californicus (McGregor) (Phytoseiidae) females reared on thorn apple pollen (Datura stramonium L.) over 40 generations different densities (2, 4, 8, 16, 32, 64 128) deutonymphs Tetranychus urticae Koch (Trombidiformes: Tetranychidae) were determined. results indicated a type II response for N. T. in G0 (no rearing as contro...

medicinal plants were used from past to present. different small arthropods such as acari were found on these plants. therefore a study on the acari fauna associated with some medicinal plants (family: asteraceae) in hamedan region was carried out during 2008–2009. in this survey, 23 species belonging 18 genera from 15 different families of the subclass acari were collected and identified. two ...