Chinese Journal of Entomology (1999) 19, 193-199

Chyi-Chen Ho and Wen-Hua Chen (1999)
[Comparisons of developemental period, fecundity and feeding amount of three phytoseiid mites (Acari: Phytoseiidae)]
Chinese Journal of Entomology 19 (2), 193-199
Abstract: Amblyseius womersleyi Shicha is found commonly in Taiwan. It feeds actively on spider mites, and can provide good control of Tetranychus kanzawai Kishida. A. fallacis (Garman) and Phytoseiulus persimilis Athias-Henriot are exotic phytoseiids imported from the United States and/or Australia to Taiwan for the control of T. urticae Koch. To compare their spider-mite-controlling abilities in controlling Kanzawa spider mite, the developmental rate, and the daily fecundity and feeding amounts of adult female mites of these three species during the first 5 days after eclosion were studied at 28°C with a photoperiod of 13:11. (L:D) in an incubator. Development from egg to adult took less than 5 days for all three mites: approximately 2 days for the egg stage, less than 1 day for the larval stage, and 1 or slightly longer than 1 day for each of the two nymphal stages. Adult female A. womersleyi, A. fallacis, and P. persimilis consumed 32.1, 18.7, and 46.5 spider mite eggs daily; and laid 3.4, 3.3, and 4.6 eggs per day, respectively. A. womersleyi had a developmental rate and daily fecundity similar to those of A. fallacis, but consumed more food. It is worthy to pay more attention to the value of A. womersleyi as a biological control agent.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: Chinese)
Database assignments for author(s): Chyi-Chen Ho, Wen Hua Chen

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		Taiwan
	Tetranychus kanzawai		Taiwan
Phytoseiulus persimilis (predator)	Tetranychus urticae		Taiwan
Neoseiulus fallacis (predator)	Tetranychus urticae		Taiwan
Neoseiulus womersleyi (predator)	Tetranychus kanzawai		Taiwan