Efficacy of the imported parasitoid, Anagyrus saccharicola (Hymenoptera: Encyrtidae) for the biological control of Saccharicoccus sacchari (Hemiptera: Pseudococcidae) attacking sugar cane in Egypt

摘要

Saccharicoccus sacchari (Hemiptera: Pseudococcidae) is one of the most important pests attacking sugar cane in Egypt. An attempt was made to control it biologically with the known effective parasitoid A. saccharicola (Hymenoptera: Encyrtidae). A total of 146163 parasitoid adults was released in five governorates in upper Egypt during March 1999-May 2000. Surveys to evaluate parasitoid effects were conducted during June 2000-June 2001. A. saccharicola established readily and spread rapidly. The rateof parasitism increased gradually from 0.5-13.2, 3.7-19.9, 4.4-24.4, 0.8-26.6 and 8.9-50.0% in Sohag, Qena, Assuit, Beni-Suef and El-Minya, respectively. Climatic conditions seemed to play an important role in promoting the establishment of the parasitoids.