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Feeding efficiency of different stages of the predatory mite,Neoseiolus californycus (Banks) on those of Tetranychus urticae and Panonychus ulmi
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Abstract: A laboratory study was conducted to evaluate the feeding efficiency of different stages of the predatory mite, Neoseiulus californicus (McGregor) (Acari: Phytoseiidae) on those of each of the two-spotted spider mite,Tetranychus urticae Koch and the European red mite, Panonychus ulmi (Koch) (Acari:Tetranychidae). The predator larva proved to be a feeding stage .Average consumption of eggs, larvae, protonymphs, deutonymphs and adult males and females of T. urticae by the predator larva were : 1.1±0.75, 1.2±0.74, 0.8±0.66, 0.5±0.58, 0.6±0.63 and 0.1±0.36 individuals , respectively. These values gradually increased in the subsequent predator stages to reach in the case of the predator adult female with average of 15.4±1.25, 16.9±1.15, 12.6±1.48, 7.2±1.07, 9.2±1.25 and 5.3±0.99 individuals from the previous prey stages, respectively. Comparatively low numbers of different stages of P. ulmi were eaten by the predator individuals. Average consumption of eggs, larvae, protonymphs, deutonymphs and adult males and females of P.ulmi by the predator larva were: 0.8±0.75, 0.9±0.66, 0.6±0.64, 0.3±0.48, 0.5±0.51 and 0.08±0.27 from the previously mentioned prey stages, respectively. Also, these values gradually increased in the progressive predator stages to reach for the predator adult female 11.8±1.38, 13.0±1.62, 9.7±1.73, 5.6±1.07, 7.1±1.52 and 4.09±1.38 from P. ulmi different progressive stages, respectively. Thus, N.californicus adult female when fed on T. urticae or P. ulmi ate more than any other predator stages.
Also, prey eggs and larvae were eaten most frequently. The foregoing results showed that N. californicus can play an important role as a bio- control agent of the two tetranychid mites T. urticae and P. ulmi.
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| Publication year |
2007
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| Pages |
913-919
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| Organization Name |
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| Author(s) from ARC |
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| External authors (outside ARC) |
M. H. Mowafi
كلية الزراعة جامعة الأزهر
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| Publication Type |
Researsh & Applied Activities
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