International Journal of Applied Microbiology and Biotechnology Research
ISSN: 2053-1818
Vol. 7(8), pp. 117-124, October, 2019
doi.org/10.33500/ijambr.2019.07.014



Entomopathogenic fungi naturally infect cereal aphids (Homopatera: Aphididae) in wheat fields at Assiut, Egypt

Asmaa H. M. Mohamed1, S. M. A. El-Maraghy2, M. A. A. Abdel-Rahman3*, Azza M. A. Awad4 and Y. M. Omar5

1Zoology Department, Faculty of Science, New Valley University, Egypt.
2Botany and Microbiology Department, Faculty of Science, Assiut University, Egypt.
3Plant Protection Research Institute, A.R.C., Egypt.
4Zoology Department, Faculty of Science, Assiut University, Egypt.
5Plant Protection Department, Faculty of Agriculture, Assiut University, Egypt.

*To whom correspondence should be addressed. E-mail: Abdel_Rahman_Alaa@hotmail.com.

Received 18 June, 2019; Received in revised form 07 August, 2019; Accepted 13 August, 2019.

Abstract


Keywords:
Cereal aphids, Wheat, Entomopathogenic fungi.

Entomopathogenic fungi infecting cereal aphids were studied in the experimental farm of Assiut University (Egypt) during 2012-2013 and 2013-2014 wheat growing seasons. The common cereal aphid species infesting wheat plants were the greenbug, Schizaphis graminum (Rondani); the oat bird-cherry aphid, Rhopalosiphum padi L. and the corn leaf aphid, Rhopalosiphum maidis (Fitch). Eight species of entomopathogenic fungi were identified and recorded as naturally infecting the aphid species; infesting wheat plants at Assiut, Egypt. These fungi include five entomophthorales (Conidiobolus coronatus, Entomophthora planchoniana, Neozygites fresenii, Pandora neoaphids and Zoophthora radicans) and three hyphomycetes (Beauveria bassiana, Paecilomyces lilacinus and Verticillium lecanii). The mortality rate with the fungal pathogens was recorded from late January and the collected data revealed that the numbers of infected aphids increased gradually to reach the maximum level during late March and synchronized with aphid population.

2019 BluePen Journals Ltd.







© 2013-2019 - BluePen Journals | Terms | Privacy policy | Advert | Help |