Bakry, Moustafa, Fathipour, Yaghoub (2024). Population abundance of the red scale insect Aonidiella aurantii (Hemiptera: Diaspididae) on different cardinal directions of guava trees. , (), -.
Moustafa Bakry; Yaghoub Fathipour. "Population abundance of the red scale insect Aonidiella aurantii (Hemiptera: Diaspididae) on different cardinal directions of guava trees". , , , 2024, -.
Bakry, Moustafa, Fathipour, Yaghoub (2024). 'Population abundance of the red scale insect Aonidiella aurantii (Hemiptera: Diaspididae) on different cardinal directions of guava trees', , (), pp. -.
Bakry, Moustafa, Fathipour, Yaghoub Population abundance of the red scale insect Aonidiella aurantii (Hemiptera: Diaspididae) on different cardinal directions of guava trees. , 2024; (): -.

Population abundance of the red scale insect Aonidiella aurantii (Hemiptera: Diaspididae) on different cardinal directions of guava trees

Journal of Agricultural Science and Technology
Articles in Press, Accepted Manuscript, Available Online from 01 January 2024    PDF (1.42 M)
Document Type: Original Research
Authors
Moustafa Bakry1; Yaghoub Fathipour* 2
1Plant Protection Research Institute
2Tarbiat Modares University
Abstract
The red scale insect, Aonidiella aurantii (Maskell) (Hemiptera: Diaspididae), is a major pest of guava trees. This study investigated the population abundance, preference, and dispersal patterns of A. aurantii in a guava orchard in the Armant district, Luxor, Egypt, over two consecutive years (2022/2023 and 2023/2024). Monitoring was conducted biweekly, revealing that A. aurantii infested guava leaves year-round at varying densities. The pest exhibited a strong preference for the upper surface of leaves in the basal layer of the southeastern quadrant, where population density remained consistently high throughout the study period. Using preference and dispersal indices, we evaluated sixteen canopy quadrant-layer-leaf surface combinations. The upper surface of basal leaves in the southeastern quadrant had the highest quantity ratio, preference index, relative abundance establishment rate, and dispersal index, confirming its suitability for A. aurantii compared to other canopy positions. These findings provide critical insights for optimizing sampling and targeted control strategies, supporting the development of an effective integrated pest management (IPM) program against A. aurantii in guava orchards.


Keywords
Scale insect pest; Population density; population fluctuation; guava tree; preference index; Egypt
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