Entomopathogenic fungi (EPF) are economical and environmentally friendly, forming an essential part of integrated pest management strategies. We screened six strains of (B1-B6) (Hypocreales: Cordycipitaceae), of which B4 was the most virulent to (Hendel) (Diptera: Tephritidae). We further assessed the biological characteristics of strain B4 and the environmental factors influencing its ability to infect . We also evaluated the effects of B4 on two of the natural predators of . We found that strain B4 was the most virulent to 3rd instar larvae, pupae, and adult , causing mortality rates of 52.67, 61.33, and 90.67%, respectively. B4 was not toxic to eggs. The optimum B4 effects on were achieved at a relative humidity of 91-100% and a temperature of 25°C. Among the six insecticides commonly used for control, 1.8% abamectin emulsifiable concentrate had the strongest inhibitory effect on B4 strain germination. B4 spraying affected both natural enemies ( and ), reducing the number of and killing adults. We found a valuable strain of EPF (B4) that is virulent against many life stages of and has great potential for the biological control of . We also provide an important theoretical and practical base for developing a potential fungicide to control .
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| http://dx.doi.org/10.3389/fmicb.2024.1362089 | DOI Listing |
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