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Entomopathogenicity of Beauveria bassiana toward flea beetles, Phyllotreta cruciferae Goeze (Col., Chrysomelidae)
Author(s) -
Miranpuri G. S.,
Khachatourians G. G.
Publication year - 1995
Publication title -
journal of applied entomology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.795
H-Index - 60
eISSN - 1439-0418
pISSN - 0931-2048
DOI - 10.1111/j.1439-0418.1995.tb01265.x
Subject(s) - beauveria bassiana , biology , bassiana , bioassay , flea beetle , spore , biological pest control , veterinary medicine , entomopathogenic fungus , flea , fungus , botany , zoology , ecology , medicine
A series of bioassays were conducted on flea beetle, Phyllotreta cruciferae using various strains/isolates of Beauveria bassiana. Flea beetles were sprayed with a conidiospore suspension of 10 8 spores/ml in different experiments. Fungus‐treated and water‐treated beetles were placed in groups of 10–50 insects in various bioassay containers including cups, jars, and cages and maintained on a fresh supply of host plant. Insect mortality was monitored daily. The LT 50 values found in B. bassiana ranged from a low of 1.9 for DAOM 210569 to a high of 16.6 for ATCC 44860. In addition to this, the results of 6 experiments of two most stable and highly sporulating strains of B. bassiana GK 2016 and SG 8702 in our laboratory showed a variation in their LT 50 values 4.3 ± 1.7 and 2.8 ± 1.6 days, respectively. The mortality data was supported by examination of mummified cadavers. In different experiments 50–90% of the cadavers showed fungal mummification within 7 days depending upon the isolate tested. The results indicated that some strains of B. bassiana are pathogenic toward the flea beetle.