Nine phytoseiid species were tested to evaluate their potential as predators of Eutetranycbus orientalis (Klein). Typhlodromus atbiasae Porath and Swirski, Amblyseius barkeri (Hughes) and Amblyseius olivi Nasr and Abou-Awad had a shorter developmental period than Typhlodromus transvalensis (Nesbitt). Typhlodromus athiasae and Amblyseius barker/showed the highest oviposition rates. Amblyseius olivi showed a low rate of oviposition although Typhlodromus transvalensis has not able to lay any eggs. Immatures survival of Typhlodromus talbii Athias I-Ienrlot, Typhlodromus balanites EI-Badry, Amblyseius badryi.Yousef and EI-Borolossy, Amblyselus cabonus (Schicha) and Amblyseius lindquisti Schuster and Pritchard were very low on Eutetranychus orientalis and all failed to develop to adulthood.
ReferencesABou-AwAD, B. A., 1983: Amblyseius gossipi (Acarina: Phytoseiidae) as a predator of the tomato erineum mite, Erioghyes lycopersici (Acari: Eriophyidae). Entomophaga 28, 363-366. ABoU-AWAD, B. A.; EL-BANHAWY, E. M., 1986: Biological studies of Amblyseius olivi, a new predator of eriophyid mites infesting olive trees in Egypt (Acari: Phytoseiidae). Entomophaga 31, 99-103. ABou-AwAD, B. A.; NASR, A. K.; GOMAA, E. A.; ABoU-ELELA, M. M. , 1989: Life history of the predatory mite, Cydnodromella negevi and the effect of nutrition on its biology (Acari:
The immature stages of the predaceous mite Typhlodromus talbii AthiasHenriot are described. The mite was reared on different prey species and pollen in the laboratory, and its developmental parameters calculated. Tydeus californicus (Banks) was found to be the most suitable and nourishing diet, giving a shorter life cycle and higher female fecundity (8.8 days and 33.4 eggs respectively), than the scale insect Coccus acuminatum (Gennadius) (10.0 days and 24.8 eggs respectively) at 25 °C. Other associates of Typ. talbii, the eriophyid Cesaberoptus kenyae Keifer, the tetranychid Oligonychus mangiferus (R. & S.) as well as date palm and castor oil pollen, were unsuitable diet. When reared on moving stages of Tyd. californicus (Banks) at 70 ± 5 % RH, 16:8 (L:D) h photoperiod and temperatures of 15, 20, 25, 28, 30, 32 and 35 °C, the total developmental time of Typ. talbii averaged 21.3, 12.4, 8.8, 7.6, 7.1, 5.8 and 11.6
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