Acarina (2008) 16, 191-196

S. Khodayari, K. Kamali and Y. Fathipour (2008)
Biology, life table, and predation of Zetzellia mali (Acari: Stigmaeidae) on Tetranychus urticae (Acari: Tetranychidae)
Acarina 16 (2), 191-196
Abstract: Biology, life table parameters and predation rate of the predatory mite Zetzellia mali (Ewing) (Acari: Stigmaeidae) feeding on eggs of Tetranychus urticae Koch (Acari: Tetranychidae) on apple leaves were studied at 25±1ºC, 65±5% RH and a photoperiod of 16:8 (L:D) hours. The following average parameters were obtained: Female longevity is 10±0.73 days, fecundity is 1.42 eggs/female/day, egg mortality is 21%, preoviposition period is 1.81±0.2 days, oviposition period is 5.4±0.6 days, post oviposition period is 1.3±0.4 days, juvenile development time is 12.18±0.34 days, juvenile mortality is 22%, sex ratio is 0.72 (female/female plus male). Life table parameters were estimated as net reproductive rate (R0) 7.25, intrinsic rate of increase (rm) 0.146 days-1, finite rate of increase (λ) 1.15, mean generation time (T) 12.88 days and doubling time (DT) 4.71 days. Average daily predation of Z. mali females on T. urticae eggs was 3.14. Thus it is concluded that Z. mali can be considered as a valuable addition to the existing IPM methods for spider mites control.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Database assignments for author(s): Yaghoub Fathipour

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
general biology - morphology - evolution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Tetranychus urticae	Apple (Malus)	Iran
Zetzellia mali (predator)	Tetranychus urticae	Apple (Malus)	Iran