Biocontrol of Date palm Dust mite Oligonychus afrasiticus (Acarina: Tetranychidae) using predatory mite, Eutogens punctata (Acarina: Cheyetidae: prostigmata)

• Omran A. Abuyila

  Department of Plant Protection, Faculty of Agriculture, Omar Al-Mukhtar University, Al-Bayda, Libya.

  Author

• Haloma M. Kerra

  Department of Plant Protection, Faculty of Agriculture, Al-Fateh University, Tripoli, Libya.

  Author

• Ali Albahi

  Palm Development Agency

  Author

Oligonychus afrasiticus is an important injurious mite in open-air date palm in southern Libya, affecting both quality and quantity of date crop. Laboratory studies showed that the development time of predatory mite Eutogens punctata which reared in smile scale using Oligonychus afrasiticus and Tyraphegus punctata as food sources were egg stage 4-5 days; larva stage 2-3 days; protonymph stage 5-6 days; Duotonymph stage 4-6 days respectively. Laboratory studies showed that adult females of Eutogens punctata could consume 7-8 and 9-11 prey per days, while male consume 3-4 and 4-6 prey per days. Eutogens punctata larva, is reported for the first time as non-feeding stage.

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