Anzeiger für Schädlingskunde, Pflanzenschutz, Umweltschutz (1995) 68, 123-127

Ç. Sengonca, N. Uygun, U. Kersting and M.R. Ulusoy (1995)
Wirksamkeit des Parasitoiden Eretmocerus debachi Rose und Rosen (Hym., Aphelinidae) gegenüber der Weißen Fliege Parabemisia myricae (Kuwana) (Hom., Aleyrodidae)
[Efficiency of Eretmocerus debachi Rose and Rosen (Hym., Aphelinidae) in controlling the whitefly Parabemisia myricae (Kuwana) (Hom., Aleyrodidae)]
Anzeiger für Schädlingskunde, Pflanzenschutz, Umweltschutz 68 (6), 123-127
Abstract: The whitefly, Parabemisia myricae (Kuwana) (Hym.: Aleyrodidae) is a most serious problem in citrus since it was accidentally introduced into the Southeast Mediterranean region of Turkey in 1982. To control this pest biologically, the specific parasitoid, Eretmocerus debachi Rose and Rosen (Hym.: Aphelinidae), was imported from California to Turkey in 1986. The parasitoid settled very well after being mass released in the entire citrus growing area. In the present study the efficiency E. debachi in controlling P. myricae was determined in naturally infested citrus orchards and on potted, artificially infested and exposed citrus seedlings over two years.
Within two weeks, the first parasitods were determined on the exposed citrus seedlings at which 10% of the P. myricae-nymphal and-puparial stages were parasitized. In both years and at all four experimental sites no further population increase of the whitefly was observed on the citrus seedling over the entire vegetation period. The P. myricae-densities were much lower on the naturally infested trees than they were on the exposed and artificially infested citrus seedlings. Nevertheless, the first E. debachi were observed with the occurrence of the first P. myricae. The parasitization rate reached sometimes up to 100%, so that the pest population decreased significantly in the following month to almost zero level. Even to smallest population increases of P. myricae, the parasitoid reacted with increasing parasitization. The experiments proved, that E. debachi was capable to parasitize high and low population densities of the whitefly completely and in consequence successfully controlled the pest.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: German)
Link to article at publishers website
Database assignments for author(s): Mehmet Rifat Ulusoy, Nedim Uygun, Cetin Sengonca

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
classical biocontrol/new introduction
population dynamics/epizootiology

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Parabemisia myricae	Citrus (genus)	Turkey
Eretmocerus debachi (parasitoid)	Parabemisia myricae	Citrus (genus)	Turkey