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Relative virulence of nomuraea spp nomuraea rileyi nomuraea atypicola nomuraea anemonoides originally isolated from an insect a spider and soil



Relative virulence of nomuraea spp nomuraea rileyi nomuraea atypicola nomuraea anemonoides originally isolated from an insect a spider and soil



Journal of Invertebrate Pathology 54(3): 373-378



Six species of lepidopteran larvae (Anticarsia gemmatalis, Heliothis zea, H. virescens, H. subflexa, Spodoptera frugiperda, and Trichoplusia ni) were topically susceptible (at 15,000 conidia/larva) to the insect-pathogenic Nomuraea rileyi and to the spider-pathogenic N. atypicola, but not to the soil-inhabiting N. anemonoides. In topical rate-mortality studies the LC50 against 1-day-old T. ni larvae for N. rileyi, N. atypicola, and N. anemonoides was 40, 40,000, and ca. 700,000 conidia/mm2, respectively. The injected LD50 value for N. rileyi, N. atypicola, and N. anemonoides was 5, 22, and ca. 1,000,000 blastospores/larva, respectively. Species of N. rileyi, N. atypicola, and N. anemonoides are readily distinguished from each other on the basis of colony color and conidia shape and size.

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Accession: 007742061

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