Persistence of Entomopathogenic Nematodes and Fungi in Soil around Olive Trunks and Their Virulence to Zeuzera pyrina L.
Y., E., H., A., A., A. (2014). Persistence of Entomopathogenic Nematodes and Fungi in Soil around Olive Trunks and Their Virulence to Zeuzera pyrina L.. EKB Journal Management System, 7(2), 57-61. doi: 10.21608/eajbsa.2014.12945
El-Kholy M. Y.; Abdel-Moniem A.S. H.; Abdelzaher H.M. A.. "Persistence of Entomopathogenic Nematodes and Fungi in Soil around Olive Trunks and Their Virulence to Zeuzera pyrina L.". EKB Journal Management System, 7, 2, 2014, 57-61. doi: 10.21608/eajbsa.2014.12945
Y., E., H., A., A., A. (2014). 'Persistence of Entomopathogenic Nematodes and Fungi in Soil around Olive Trunks and Their Virulence to Zeuzera pyrina L.', EKB Journal Management System, 7(2), pp. 57-61. doi: 10.21608/eajbsa.2014.12945
Y., E., H., A., A., A. Persistence of Entomopathogenic Nematodes and Fungi in Soil around Olive Trunks and Their Virulence to Zeuzera pyrina L.. EKB Journal Management System, 2014; 7(2): 57-61. doi: 10.21608/eajbsa.2014.12945

Persistence of Entomopathogenic Nematodes and Fungi in Soil around Olive Trunks and Their Virulence to Zeuzera pyrina L.

Egyptian Academic Journal of Biological Sciences. A, Entomology
Article 7, Volume 7, Issue 2, December 2014, Page 57-61  XML PDF (122.24 K)
Document Type: Original Article
DOI: 10.21608/eajbsa.2014.12945
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Authors
El-Kholy M. Y.1; Abdel-Moniem A.S. H.1; Abdelzaher H.M. A.2
1Department of Pests and Plant Protection, National Research Centre, Dokki, Cairo, Egypt
2Dept. of Botany and Microbiology, Faculty of Science, Minia University, Egypt
Abstract
The present work has been conducted through a project for biological control of olive pests in Aljouf region, Saudi Arabia Kingdom. (Steinernema spp., SAK1 isolate), (Ord. Rhabditida: Fam. Steinernematidae) and (Heterorhabditis spp., SAK2 and SAK3 isolates), (Ord. Rhabditida: Fam. Heterorhabditidae) were applied in soil around trunks of olive trees. Successive soil samples were tested for persistence and their virulence to larvae and pupae of Zeuzera pyrina L; where it is attacking olive trees and strongly considered one of the most dangerous pests. Heterorhabditis spp., SAK2 and SAK3 isolates achieved 100 % mortality to larvae and pupae of Z. pyrina at the second day, where mortality gradually decreased to 22.2 and 11.1 % after 16 days for both larvae and pupae, respectively. Steinernema spp., SAK1 isolate was less virulent, it caused 88.9 and 50.5 % mortality after two days and no mortality achieved after 16 days for both larvae and pupae of Z. pyrina, respectively. After two and four days, mortality due to the fungus is 66.7 and 44.4 %, respectively, where no mortality achieved after 8 and 16 days for both larvae and pupae of Z. pyrina, respectively. On the other hand, applying nematodes either via spraying or injection in olive branches infested with Zeuzera pyrina larvae and /or pupae caused 100% control to the insect stages inside the branches within seven days. 
Keywords
isolation; Steinernema; Heterorhabditis; Lepidoptera; biological control; olive; Galleria melonella; Zeuzera pyrina
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