
	Journal of Entomology
	Year: 2009 \| Volume: 6 \| Issue: 2 \| Page No.: 72-81 DOI: 10.3923/je.2009.72.81

Combining Effect of Beauveria bassaania (Bals.) and Ertemocerus mundus Mercet (Hymenoptera: Aphelinidae) on Sweetpotato Whitefly, Bemisia tabaci Gennadius (Aleyrodidae; Hemiptera)

Mohammad A. Al-Deghairi

Abstract: Combined effects between the entomopathogenic fungi, Beauveria bassaina (Bals.) and whitefly parasitoid, Eretmocerus mundus Mercet on Bemisia tabaci (Genn.) were investigated under laboratory conditions. The competitive interactions among them were also evaluated either alone or in combination, in respect of the positive and negative effects. The deleterious effects on the parasitoid were extremely low, particularly when the parasitized nymphs exposed to the fungus later. In direct contact bioassay, fungus caused 5.1-15.3% mortality in post-releasing trial and from 8.9-22.1% in pre-releasing trial. Three to five days after treatment, B. tabaci nymphs were rejected as a host by E. mundus females due to the fungal infection. In infected nymphs, the majority of E. mundus females were not laid and no parasitism was detected. The control efficiency of the two natural enemies of B. tabaci, when used separately or in combination, varied according to the tested biological agent. E. mundus alone reduced pest populations by 19.4 and 51.1% in pre- and post-releasing trials, respectively. B. bassaina caused 38.1% in pre-releasing trial and 29.4% in post-releasing trial. Meanwhile, the interaction between fungus and the parasitoid in combination reduced the pestpopulation by 51.2 and 72.3% in pre- and post-releasing trials, respectively.

PDF Fulltext XML References Citation Report Citation

RELATED ARTICLES:

•	Effect of Formulated Entomopathogenic Fungi on Red Gum Lerp Psyllid Glycaspis brimblecombei

•	Biological Aspects and Life Tables of Typhlodromips swirskii (Acari: Phytoseiidae) Fed Bemisia tabaci (Hemiptera: Aleyroididae)

How to cite this article:

Mohammad A. Al-Deghairi , 2009. Combining Effect of Beauveria bassaania (Bals.) and Ertemocerus mundus Mercet (Hymenoptera: Aphelinidae) on Sweetpotato Whitefly, Bemisia tabaci Gennadius (Aleyrodidae; Hemiptera). Journal of Entomology, 6: 72-81.

DOI: 10.3923/je.2009.72.81

URL: https://scialert.net/abstract/?doi=je.2009.72.81

COMMENT ON THIS PAPER

Navigation


		Online First
		Current Issue
		Previous Issues
		Editorial Board
		Submit a Manuscript
		Guide to Authors
		Subscribe to E-alerts

Indexed In


		ASCI-Database
		Asian Digital Library
		Cambridge Scientific Abstract
		Chemical Abstract Services
		Google Scholar
		ISI Web of Knowledge
		SCIMAGO
		Thomson ISI

Science Alert