Studies of two parasites of olive scale,Parlatoria oleae(Colvée): IV. Biological control ofParlatoria oleae(Colvée) through the compensatory action of two introduced parasites

Publisher Website
Google Scholar
Abstract
The competitive population interactions between Aphytis maculicornis and Coccophagoides utilis were analyzed in order to determine their roles in controlling olive scale, Parlatoria oleae, in California olive groves. The 2 parasites working together give better control of olive scale than does A. ma-culicornis working alone. Conclusions are based on observations of parasite populations at selected groves over a period of 5 years. K-values for various factors affecting olive scale mortality were developed in order to measure and assess the controlling effects of these 2 parasites on olive scale from generation to generation.