مقايسه روش هاي پرورش دو كنه شكارگر TYPHLODROMUS KETTANEHI DOSSE و EUSEIUS FINLANDICUS )OUDEMANS( )ACARI:PHYTOSEIIDAE

Comparison of Rearing Methods of Two Predatory Mites Species Typhlodromus kettanehi Dosse and Euseius finlandicus (Oudemans) (Acari: Phytoseiidae)

Two predatory mites species, Typhlodromus kettanehi Dosse and Euseius finlandicus (Oudemans), were found native to East Azarbaijan province of Iran. They often recorded with high population, especially on apple and walnut fruit trees. in order to comparison of their rearing methods, an experiment was carried out in the form of factorial with completely randomized design (CRD) in 5 replicates. Factors of the experiment were: factor A, rearing substrate (with two kinds of substrates, plastic substrate and bean leaf); factor B, kind of predatory mite species (with two above mentioned species) and factor C. rearing diet (with three kinds of foods, i. e. Tetranychus urticae Koch, almond pollen and combination of prey mite and pollen). Two kinds of rearing substrates with three kinds of diets formed six different rearing methods for each predator species. Experimental substrates sizes was 5*5 cm and 60 numbers of them were placed into 5 plastic pans. The initial numbers of the predatory mites per experimental substrate were 10 fertilized females. The number of predatory mite stages were counted for each experimental substrate after 15 days under 24±2 °C, 60±5% RH and 14 L: I0 D hours. The data obtained of predatory abundance were analyzied , which results indicated that, T. kettanehi on plastic substrate or bean leafʹ and almond pollen or combination of T. urticae with almond pollen, and rearing of E. finlandicus only on bean leaf and with these diets were found suitable methods, whereas, results was reversed when two predatory species reared on bean leaf and prey mite.