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14 June 2019 Pathogenicity and Virulence of Purpureocillium lilacinum (Hypocreales: Ophiocordycipitaceae) on Mexican Fruit Fly Adults
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Abstract

Purpureocillium lilacinum (Thom) Luangsa-ard, Houbraken, Hywel-Jones & Samson (Hypocreales: Ophiocordycipitaceae) is a fungus commonly used for controlling nematodes, and also has been reported as an insect pathogen. However, little is known about its effects on insects. Here, the pathogenicity of 9 isolates and the virulence and sublethal effects of 2 isolates were evaluated to control adult Anastrepha ludens (Loew) (Diptera: Tephritidae). The pathogenicity assays demonstrated that the 9 isolates were pathogenic, with mortality percentages ranging from 28.8 to 52.4% and LT50 values were 18 d or more. The strain CFFSUR-A53 was more virulent than CFFSUR-A60, with LC50 values of 7.62 × 106 and 5.2 × 109 conidia per mL, respectively. The isolates reduced the life expectancy of the flies by 65 and 37%, decreased fecundity by 78 and 36%, and reduced egg hatching by 31.4 and 18.5%, respectively.

Ricardo A. Toledo-Hernández, Jorge Toledo, Javier Valle-Mora, Francisco Holguín-Meléndez, Pablo Liedo, and Graciela Huerta-Palacios "Pathogenicity and Virulence of Purpureocillium lilacinum (Hypocreales: Ophiocordycipitaceae) on Mexican Fruit Fly Adults," Florida Entomologist 102(2), 309-314, (14 June 2019). https://doi.org/10.1653/024.102.0204
Published: 14 June 2019
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