Studies on Some Parasitoids of Aphid Aphis gossypii Glover, (Homoptera: Aphididae) on Cucumber Plants in Egypt
A., S., El-Sharkawy, H., El-Santel, F., Abd El-Salam, R. (2017). Studies on Some Parasitoids of Aphid Aphis gossypii Glover, (Homoptera: Aphididae) on Cucumber Plants in Egypt. EKB Journal Management System, 10(7), 19-30. doi: 10.21608/eajb.2017.12090
Saleh A. A. A.; H. M. El-Sharkawy; F. S. El-Santel; Rehab A. Abd El-Salam. "Studies on Some Parasitoids of Aphid Aphis gossypii Glover, (Homoptera: Aphididae) on Cucumber Plants in Egypt". EKB Journal Management System, 10, 7, 2017, 19-30. doi: 10.21608/eajb.2017.12090
A., S., El-Sharkawy, H., El-Santel, F., Abd El-Salam, R. (2017). 'Studies on Some Parasitoids of Aphid Aphis gossypii Glover, (Homoptera: Aphididae) on Cucumber Plants in Egypt', EKB Journal Management System, 10(7), pp. 19-30. doi: 10.21608/eajb.2017.12090
A., S., El-Sharkawy, H., El-Santel, F., Abd El-Salam, R. Studies on Some Parasitoids of Aphid Aphis gossypii Glover, (Homoptera: Aphididae) on Cucumber Plants in Egypt. EKB Journal Management System, 2017; 10(7): 19-30. doi: 10.21608/eajb.2017.12090

Studies on Some Parasitoids of Aphid Aphis gossypii Glover, (Homoptera: Aphididae) on Cucumber Plants in Egypt

Egyptian Academic Journal of Biological Sciences. A, Entomology
Article 3, Volume 10, Issue 7, November 2017, Page 19-30  XML PDF (319.96 K)
Document Type: Original Article
DOI: 10.21608/eajb.2017.12090
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Authors
Saleh A. A. A.1; H. M. El-Sharkawy2; F. S. El-Santel2; Rehab A. Abd El-Salam2
1Plant Protection Research Institute, Agricultural Research Center (ARC), Dokki, Giza, Egypt
2Plant Production Dept., Faculty of Technology & Development, Zagazig University, Egypt.
Abstract
The present study was conducted to survey and population density of aphid Aphis gossypii Glover (Homoptera: Aphididae)  infesting cucumber plants and its parasitoids were investigated at Diarb Nigem district during two season 2015 and 2016. Three primary parasitoids Lysiphlebus fabarum (Marshall), Diaeretiella rapae (M Intosh) and Binodoxys angelica (Haliday) and a hyperparasitoid, Pachyneuron sp. ((Hymenoptera: Aphidiidae)), were recorded. Primary parasitoid Lysiphlebus fabarum was the highly dominant species by relative density 53.76 and 52.24%, followed by D. rapae 22.58 and 27.73%, Binodoxys angelica 15.06 and 12.14%, while the hyperparasitoid , Pachyneuron sp., occurred by 8.60 and 7.89%, during 2015 and 2016 seasons respectively. The percentage of parasitism ranged from 3.14 % to 21.0 % in 2015, while it is starting by 2.66 % to reach its maximum 42.66% in 2016. Total developmental period of the parasitoid Lysiphlebus fabarum was 14.67 ± 1.16 days at 18.30°C ±1°C and 64 ±2RH%. Investigation the behaviour of the same parasitoid Lysiphlebus fabarum at varying   host densities showed increase number of sting and number of mummies increased with increase of host density but decrease leaf arrival times and host arrival times with increasing . The obtained results showed that the longevity of the parasitoid Lysiphlebus fabarum was affected by temperatureand food supply.
Keywords
Aphis gossypii; Lysiphlebus fabarum; Diaeretiella rapae; Binodoxys angelica; biology
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