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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Entomopathogenic fungi of Eurygaster integriceps Puton (Hemiptera: Scutelleridae): Collection and characterization for development
Biological Control, Volume 27, No. 3, Year 2003
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Description
Exploratory activities were done in Syria, Turkey, Iran, Uzbekistan, Kazakhstan, The Kyrghyz Republic, and Russia to locate entomopathogenic fungi of Eurygaster integriceps. Isolates from the entomopathogenic genera Beauveria, Paecilomyces, and Verticillium were collected. Beauveria bassiana was the most commonly recovered species. Thirty-one isolates of the 221 recovered were examined at 20, 25, 30, and 35°C for 20 days for growth and sporulation. Growth and sporulation were generally highest at 25°C. None of the isolates grew at 35°C, and at 30°C growth was retarded with no conidia being produced. Single- and multiple-concentration bioassays were conducted on greenhouse-grown wheat plants and in pine litter to evaluate virulence of fungi from several sources to E. integriceps. When tested at a single concentration, mortality after 15 days ranged from 66 to >95% in the litter assays and 50 to 91% in the plant assays. There was a distinct concentration response for most of the isolates tested in the multiple-concentration assay, particularly in the in-litter environment. In litter, mortality tended to develop earlier than in on-plant assays. Several isolates of B. bassiana and one Metarhizium anisopliae displayed consistently high virulence against E. integriceps and were more virulent than two commercial strains. Our results demonstrate the potential of entomopathogenic fungi for management of E. integriceps in overwintering sites and in wheat fields. © 2003 Elsevier Science (USA). All rights reserved.
Authors & Co-Authors
Parker, Bruce L.
United States, Burlington
The University of Vermont
Skinner, Margaret
United States, Burlington
The University of Vermont
Costa, Scott D.
United States, Burlington
The University of Vermont
Gouli, Svetlana
United States, Burlington
The University of Vermont
Reid, William R.
United States, Burlington
The University of Vermont
El-Bouhssini, Mustapha
Lebanon, Beirut
International Center for Agricultural Research in the Dry Areas Syria
Statistics
Citations: 84
Authors: 6
Affiliations: 2
Identifiers
Doi:
10.1016/S1049-9644(03)00017-3
ISSN:
10499644
Study Design
Exploratory Study