Role of Four the Coccinellid Predator Species in Regulating the Population of the Main Piercing-Sucking Insect Pests Attacking Certain Vegetable Crops
Ata, T., El-Kady, H., Awadallah, S., Essa, A. (2025). Role of Four the Coccinellid Predator Species in Regulating the Population of the Main Piercing-Sucking Insect Pests Attacking Certain Vegetable Crops. EKB Journal Management System, 4(2), 18-35. doi: 10.21608/djas.2025.358696.1002
Tarek Ata; Hafez El-Kady; Samir Awadallah; Abdelrahman Essa. "Role of Four the Coccinellid Predator Species in Regulating the Population of the Main Piercing-Sucking Insect Pests Attacking Certain Vegetable Crops". EKB Journal Management System, 4, 2, 2025, 18-35. doi: 10.21608/djas.2025.358696.1002
Ata, T., El-Kady, H., Awadallah, S., Essa, A. (2025). 'Role of Four the Coccinellid Predator Species in Regulating the Population of the Main Piercing-Sucking Insect Pests Attacking Certain Vegetable Crops', EKB Journal Management System, 4(2), pp. 18-35. doi: 10.21608/djas.2025.358696.1002
Ata, T., El-Kady, H., Awadallah, S., Essa, A. Role of Four the Coccinellid Predator Species in Regulating the Population of the Main Piercing-Sucking Insect Pests Attacking Certain Vegetable Crops. EKB Journal Management System, 2025; 4(2): 18-35. doi: 10.21608/djas.2025.358696.1002

Role of Four the Coccinellid Predator Species in Regulating the Population of the Main Piercing-Sucking Insect Pests Attacking Certain Vegetable Crops

Damietta Journal of Agricultural Sciences
Volume 4, Issue 2, July 2025, Page 18-35  XML PDF (1.54 MB)
Document Type: Original research papers
DOI: 10.21608/djas.2025.358696.1002
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Authors
Tarek Ata1; Hafez El-Kady2; Samir Awadallah3; Abdelrahman Essa email 2
1Plant Protection, Faculty of Agriculture, Damietta University ,Damietta, Egypt
2Plant Protection, Faculty of Agriculture, Damietta University, Damietta, Egypt
3Economic Entomology, Faculty of Agriculture -Mansoura University, Mansoura ,Egypt
Abstract
The experiments were conducted to investigate the role of coccinellid predators in regulating insect pest populations on vegetable crops in the Kafr-Saad area, Damietta Governorate, Egypt, during the two successive summer planting seasons of 2021 and 2022. Four predator species belonging to the order Coleoptera (Coccinella undecimpunctata, Hippodamia convergens, Cheilomenes propinqua vicina and Scymnus spp.) were recorded on cucumber, okra, eggplant, and cowpea crops. Among the coccinellid predators, C. propinqua vicina was the most abundant on vegetable crops, followed by Scymnus spp., then H. convergens, while C. undecimpunctata was the least abundant. During the first season, C. propinqua vicina accounted for 32.8%, 28.7%, 30.3%, and 22.8% of the total coccinellid predators on cucumber, okra, eggplant, and cowpea crops, respectively. In the second season, these percentages were 32.8%, 30.0%, 28.3%, and 25.4%, respectively. Conversely, C. undecimpunctata represented the smallest proportion, accounting for 21.8%, 18.6%, 20.2%, and 23.1% in the first season, and 21.3%, 19.4%, 21.5%, and 21.5% in the second season for the same crops. Regarding host plant preferences, the coccinellid predators (C. propinqua vicina, H. convergens and C. undecimpunctata) showed a strong preference for cucumber plants, followed by okra and eggplant, with the least preference for cowpea. In contrast, Scymnus spp. preferred okra plants, followed by cucumber and eggplant, with cowpea being the least preferred host, during both the first and second seasons.
Keywords
Coccinellid predators; Piercing-Sucking Insects; Vegetable crops
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