Journal of Economic Entomology (1969) 62, 1057-1060

Y. Ben-Dov and D. Rosen (1969)
Efficacy of natural enemies of the California red scale on citrus in Israel
Journal of Economic Entomology 62 (5), 1057-1060
Abstract: The interrelations between Aonidiella aurantii (Maskell) and its most important local natural enemies, the aphelinids Aphytis spp. and the coccinellid Chilocorus bipustulatus (L.), were investigated in an orange grove in the southern Coastal Plain of Israel. The insecticidal check method was used in this study. It was found that natural enemies play a decisive role in retarding the buildup of California red scale populations on citrus, especially at the onset of summer. Thus, decimation of natural enemy populations at that period causes a marked increase in the percentage of live scales, which is followed by a massive outbreak of the scale's populations. However, local natural enemies alone were not sufficient to hold the California red scale population below the threshold of economic injury in the test plot.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Database assignments for author(s): Yair Ben-Dov

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
health/environmental effects of pesticides
Research topic(s) for beneficials or antagonists:
general biology - morphology - evolution
resistance to pesticides

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Aonidiella aurantii	Citrus (genus)	Israel
Aphytis chrysomphali (parasitoid)	Aonidiella aurantii	Citrus (genus)	Israel
Chilocorus bipustulatus (predator)	Aonidiella aurantii	Citrus (genus)	Israel
Aphytis coheni (parasitoid)	Aonidiella aurantii	Citrus (genus)	Israel