Performance of Three Isolates of Metarhizium anisopliae and Their Virulence against Zeugodacus cucurbitae under Different Temperature Regimes, with Global Extrapolation of Their Efficiency

dc.contributor.authorOnsongo, Susan K.
dc.contributor.authorGichimu, Bernard M.
dc.contributor.authorAkutse, Komivi S.
dc.contributor.authorDubois, Thomas
dc.contributor.authorMohamed, Samira A.
dc.date.accessioned2020-07-01T11:22:37Z
dc.date.available2020-07-01T11:22:37Z
dc.date.issued2019-08
dc.description.abstractThe performance of entomopathogenic fungi in pest control is usually a ected by both biotic and abiotic factors. This study aimed to determine the e ects of various temperatures (15, 20, 25 and 30 C) on conidial germination, mycelial growth and conidial density and virulence to the melon fly Zeugodacus cucurbitae of three selected isolates of Metarhizium anisopliae. The three isolates, ICIPE 18, ICIPE 30 and ICIPE 69, had previously been selected in laboratory bioassays. Percentage mortality by the three isolates ranged between 16.25% and 100.0% across the di erent temperatures. The isolates ICIPE 69 and ICIPE 18 recorded the highest percentage mortality of 96.25% and 100% and the shortest LT50 values of 2.61 and 2.63 days, respectively, at 30 C, ICIPE 69 produced the highest number of conidia of 90.5 10 C. However, at 30 /mL and was therefore selected for global mapping to predict its e cacy against Z. cucurbitae using the geospatial temperature data layer and the best fitted quadratic model. The map showed that the isolate would be more e ective in the tropics than in temperate climates.en_US
dc.identifier.citationInsects 2019, 10, 270en_US
dc.identifier.uridoi:10.3390/insects10090270
dc.identifier.urihttp://repository.embuni.ac.ke/handle/embuni/2440
dc.language.isoenen_US
dc.publisherMDPIen_US
dc.subjectentomopathogenic fungusen_US
dc.subjectgerminationen_US
dc.subjectmelon flyen_US
dc.subjectpercentage mortalityen_US
dc.subjectradial growthen_US
dc.subjectsporulationen_US
dc.titlePerformance of Three Isolates of Metarhizium anisopliae and Their Virulence against Zeugodacus cucurbitae under Different Temperature Regimes, with Global Extrapolation of Their Efficiencyen_US
dc.typeArticleen_US
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