| Title: | "The Entomopathogenic Fungi Metarhizium anisopliae and Beauveria bassiana for Management of the Melon Fly Zeugodacus cucurbitae: Pathogenicity, Horizontal Transmission, and Compatability with Cuelure" |
| Author(s): | Onsongo SK; Mohamed SA; Akutse KS; Gichimu BM; Dubois T; |
| Address: | "International Centre of Insect Physiology and Ecology (icipe), Nairobi 00100, Kenya. Department of Agricultural Resource Management, University of Embu, Embu 60100, Kenya" |
| ISSN/ISBN: | 2075-4450 (Print) 2075-4450 (Electronic) 2075-4450 (Linking) |
| Abstract: | "In the laboratory, the pathogenicity of thirteen isolates of Metarhizium anisopliae (Metschnikoff) Sorokin and two isolates of Beauveria bassiana (Balsamo) Vuillemin against the melon fly Zeugodacus cucurbitae (Coquillett) were assessed by exposing adults to 0.3 g of dry conidia (~3 x 10(9) conidia) of each isolate for 5 min and monitoring mortality for up to 5 days. Compatibility with a male pheromone, cuelure, (4-(p-acetoxyphenyl)-2-butanone), was determined by testing conidial germination and germ tube growth of the most promising isolate, M. anisopliae ICIPE 69, in the presence of cuelure at different temperatures. For horizontal transmission, the flies were separated by sex, separately exposed to M. anisopliae ICIPE 69, and subsequently mixed with non-exposed flies from the other sex. The most pathogenic isolates were M. anisopliae ICIPE 69, 18, and 30, causing mortalities of 94, 87, and 81%, with 5 days post-exposure, respectively. Metarhizium anisopliae ICIPE 69 caused the highest pupal mortality of 74%, with 15 days post-exposure. Horizontal transmission of M. anisopliae ICIPE 69 among male and female Z. cucurbitae was confirmed by 59 and 67% mortality after exposure to infected donor males and females, respectively. Metarhizium anisopliae ICIPE 69 affected the oviposition, but not hatchability, of infected Z. cucurbitae females. Metarhizium anisopliae ICIPE 69 is, therefore, a potential isolate for biopesticide development for Z. cucurbitae management in cucurbit production systems" |
| Keywords: | Beauveria bassiana Metarhizium anisopliae Zeugodacus cucurbitae compatibility horizontal transmission mortality; |
| Notes: | "PubMed-not-MEDLINEOnsongo, Susan K Mohamed, Samira A Akutse, Komivi S Gichimu, Bernard M Dubois, Thomas eng 17.7860.4-001/German Federal Ministry for Economic Cooperation and Development (BMZ) commissioned and administered through the Deutsche Gesellschaft fur Internationale Zusammenarbeit (GIZ) Fund for International Agricultural Research (FIA)/ RAF-3058 KEN-18/0005/Norwegian Agency for Development Cooperation, the Section for Research, Innovation, and Higher Education/ Switzerland 2022/10/28 Insects. 2022 Sep 21; 13(10):859. doi: 10.3390/insects13100859" |
