Comparison of different rearing substrates of the predatory mite Amblyseius swirskii (Athias-Henriot) (Acari: Phytoseiidae) with respect to the oviposition

Predatory mite Amblyseius swirskii is used in augmentation biological control programs in more than 50 countries and is a suitable predator for control pest populations. With regard to the role of this predatory mite, the researches more for increase of oviposition has particular importance. Thus, in this research, five kinds of methods of rearing were considered at laboratory conditions (25±2 ̊C, 70±5% RH and 16L: 8D) and with 4 replicates. After 12 h,wehave investigated and compared the number of laid eggs of each method. These methods of rearing consisted: 1) Rearing of predator mite on 10 strings of cotton 2) Rearing of predator on 10 strings of cotton and 2 piece of foursquare cucumber leaf 3) Rearing on 10 strings of cotton and 2 piece of wriggled cucumber leaf 4) Rearing of predator on 10 strings of cotton and 2 piece of wriggled bean leaf 5) Rearing on 10 strings of cotton and 4 piece of wriggled cucumber leaf. Results showed the average number of laid eggs in methods first, second and fourth were not significantly different. But method third was a significant difference with methods first, second and fourth. Also there was a significant difference among method five and other methods. According to the result method five as a suitable method for rearing of this predator is presented.