Attia, S., Abd Elrazzik, M., Abd-Elaziz, S. (2018). Abundance and Generation Determination of the Mango Shield Scale Milviscutulus mangiferae (Green) (Coccidae: Homoptera) an Invasive Coccid Infesting Mango Orchards at Qaliobiya Gevernorate. Journal of Plant Protection and Pathology, 9(3), 209-213. doi: 10.21608/jppp.2018.41389
Sahar A. Attia; Maha I. Abd Elrazzik; Sahar Y. Abd-Elaziz. "Abundance and Generation Determination of the Mango Shield Scale Milviscutulus mangiferae (Green) (Coccidae: Homoptera) an Invasive Coccid Infesting Mango Orchards at Qaliobiya Gevernorate". Journal of Plant Protection and Pathology, 9, 3, 2018, 209-213. doi: 10.21608/jppp.2018.41389
Attia, S., Abd Elrazzik, M., Abd-Elaziz, S. (2018). 'Abundance and Generation Determination of the Mango Shield Scale Milviscutulus mangiferae (Green) (Coccidae: Homoptera) an Invasive Coccid Infesting Mango Orchards at Qaliobiya Gevernorate', Journal of Plant Protection and Pathology, 9(3), pp. 209-213. doi: 10.21608/jppp.2018.41389
Attia, S., Abd Elrazzik, M., Abd-Elaziz, S. Abundance and Generation Determination of the Mango Shield Scale Milviscutulus mangiferae (Green) (Coccidae: Homoptera) an Invasive Coccid Infesting Mango Orchards at Qaliobiya Gevernorate. Journal of Plant Protection and Pathology, 2018; 9(3): 209-213. doi: 10.21608/jppp.2018.41389
Abundance and Generation Determination of the Mango Shield Scale Milviscutulus mangiferae (Green) (Coccidae: Homoptera) an Invasive Coccid Infesting Mango Orchards at Qaliobiya Gevernorate
1Scale Insect and Mealy bug Research Department, Plant Protection Research Institute, Dokki, Giza, Egypt.
2Department of Economic Entomology and Pesticides, Faculty of Agriculture Cairo University, Giza, Egypt.
Abstract
The obtained results showed that the population fluctuation of Milviscutulus mangiferae (Green)was studied on mango trees for the two successive years (2016/2017) and (2017-2018) in Qalubyia Governorate, the activity of M. mangifrae took place from early April until January with three periods of high activity synchronized with the three growth flushes of mango trees, these periods of the activity of the tree and the studied pest recorded in spring, summer and autumn.Milviscutulus mangiferae on mango trees indicated the occurrence of three generations per a year. The first generation (spring), with duration of 4.5 and 4 months during two years. The second generation (summer) with duration of (2&3 months). The third generation (autumn/wnter) with duration of (5&4.5 months), (marked by hibernated adult females).There were abnormal relationship between the total population and the metrological factors.The activity of the associated parasitoid Coccophagus scutellaris (Dalman)started from May until Feb. with synchronization of the pest occurrence, the high activity of the two years of study recorded on [(mid May, 1st Aug., mid Oct. and 1st Jan.) with (12, 16, 35 and 12 individuals)] and [(mid May, mid Jul., 1st Oct. and mid Nov.) with (14, 11, 28 and 23 individuals)] respectively.The rate of parasitism ofC. scutellarishad a four generations (period of parasitism) per a year of studyin spring, summer, autumn and winter (parasitized on over wintered stages).
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