Acta Entomologica Sinica (2009) 52, 281-289

Dong-Yin Han, Kui Liu, Fang-Ping Zhang, Wu-Ren Huang, Jing-Bao Zhang, Qi-An Jin and Yue-Guan Fu (2009)
[Biological characteristics of the spiralling whitefly, Aleurodicus dispersus Russell (Homoptera: Aleyrodidae)]
Acta Entomologica Sinica 52 (3), 281-289
Abstract: The spiralling whitefly, Aleurodicus dispersus Russell, is a newly destructive invasive pest in Hainan Island, China. The morphology and biology of the spiralling whitefly were studied systematically through observations and experiments both in fields and laboratory. The results showed that the developmental threshold and the effective accumulative temperature for whole generation were estimated to be 8.88°C and 511.86 degree-days, respectively, and 8-9 generations could occur per year in Hainan Island. In the temperature range of 18°C to 32°C, the developmental duration from egg to adult is 26.63 to 57.15 d (including that for egg 7.15-15.93 d, 1st instar nymph 4.00-11.03 d, 2nd instar 3.83-7.53 d, 3rd instar 4.09-8.64 d and 4th instar 7.56-14.03 d), but the whitefly failed to survive at 14°C. The temperature higher or lower than 28°C, however, displayed negative effects on the population increase of the whitely. The adults are normally active at dawn and dusk, especially at calm, uncloudy dawn (7:00 am) or in the cloudy morning (9:00 am), but mostly inactive in rainy day.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: Chinese)

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution
environment - cropping system/rotation

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Aleurodicus dispersus		China (south)