Typhlodromips swirskii (Athias-Henriot) as a biological control agent for Panonychus citri (McGregor) (Phytoseiidae, Tetranychidae)

Document Type : Original research articles

Author

Agric. Zoology and Nematology Dept., Fac. of Agric .. Alazhar Univ., Cairo. Egypt

Abstract

Typhlodromips swirskii was able to develop and reproduce when fed on Panonychus citri. Temperature negatively affected its biology.  Generation period and adult female longevity decreased from (I 0.59±0.42) and (3 I. 72±0.97) at 20 °C to (7.81±0.40) and (21.72±0.41) days at 30 °C, respectively. Also female laid an average of(33.75±2.64) eggs at 20 °C., decreased to (24.19±1.72) days at 30°C. However, rm was 0.14 and 0.18 at both degrees respectively. T.  swirskii proved to  be effective predator for P.  cirri, as at high level of eight predators/ orange seedling, Citrus aurantium L., it gave the highest percent reduction from 27.27% after a five days to 88.89% after a month from release.

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