Native parasites of the greenhouse whitefly, Trialeurodes vaporariorum (Westwood) in Japan and results of first use as biological control agents
- 12 January 1981
- journal article
- Published by Wiley in Zeitschrift für Angewandte Entomologie
- Vol. 92 (1-5) , 457-464
- https://doi.org/10.1111/j.1439-0418.1981.tb01696.x
Abstract
Six species of hymenopterous parasites have emerged from greenhouse whitefly pupae collected in Japan during 1975–1978: Encarsia sp.A, Encarsia sp.B, Eretmocerus haldemani, Eretmocerus sp., Prospaltella lutea and Prospaltella sp. Encarsia sp.A and Prospaltella sp. were relatively common species, whereas Encarsia sp.B, Eretmocerus haldemani, Eretmocerus sp. and Prospaltella lutea were rare ones. Although Prospaltella sp. occurred most frequently in the field, the number of hosts attacked in greenhouse experiments by adult parasites of this species was significantly lower than that attacked by Encarsia sp.A. The ability of these native parasites in controlling whiteflies was examined in laboratory and greenhouse experiments. It was concluded that they were inferior to the introduced Encarsia formosa.Zusammenfassung: über die natürlichen Parasiten der Weißen Fliege, Trialeurodes vaporariorum (Westwood) in Japan und ihre Freilassung in GewächshäusernWährend der Jahre 1975–1978 wurde das Spektrum der natürlichen Parasiten der Weißen Fliege, Trialeurodes vaporariorum in Japan untersucht. Es wurden 6 Arten gefunden: Encarsia sp.A, Encarsia sp.B, Eretmocerus haldemani, Eretmocerus sp., Prospaltella lutea und Prospaltella sp. Seltene Arten waren Encarsia sp.B, Eretmocerus haldemani, Eretmocerus sp. und Prospaltella lutea. An Tomaten in Gewächshäusern wurde bei niedrigen Temperaturen die Möglichkeit untersucht, Encarsia sp.A und Prospaltella sp. zur biologischen Bekämpfung der Weißen Fliege zu verwenden. Die Ergebnisse der Freilassung zeigen, daß die natürlichen Parasiten zur Regulierung der Schädlingspopulation nicht so gut imstande waren wie die eingeführte Encarsia formosa.Keywords
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