Acta Entomologica Sinica (1998) 41, 113-123

Hong Lei, Rumei Xu, W.F. Tjallingii and J.C. van Leteren (1998)
[Electrical penetration graphs of greenhouse whitefly, Trialeurodes vaporariorum (Westwood)]
Acta Entomologica Sinica 41 (2), 113-123
Abstract: The relationships were described in this paper between the Electrical Penetration Graphs (EPGs) of greenhouse whitefly,Trialeurodes vaporariorum (Westwood), and its probing, feeding and ovipositing activities. The potential application of this method in interpretating the resistance mechanisms against whitefly was also discussed. For whitefly adults, the A pattern and C pattern represent the probing initiation on the leaf surface and probing process in the mesophyll. The G pattern indicates xylem drinking and the E(pd), (1) and. (2) are two different activities in sieve element and thus relate to phloem ingestion. Moreover, oviposition can be observed from EPG recordings, consisting of two subpatterns termed as Ovi-I and Ovi-II . For whitefly larvae, the H pattern indicates phloem ingestion but L pattern not, though still in sieve element. A procedure of stylet withdrawal and repenetration occurs before and after moulting.
(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): W. Fred Tjallingii

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

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Trialeurodes vaporariorum	Cucumber (Cucumis sativus)