Pathogenicity of Metarhizium anisopliae to the chestnut weevil larvae under laboratory and field conditions
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概要
- 論文の詳細を見る
We used a baiting method to isolate 65 entomopathogenic fungi with pathogenicity to the chestnut weevil larva from soil samples. Metarhizium anisopliae strain HF293 showed the highest pathogenicity. Under laboratory conditions, the LD_<50> value of strain HF293 on the 10th day after treatment of newly emerged larvae was 9.9×10^3 conidia/larva, and the mortality rate of larvae reached 56% at five weeks after treatment with a conidial dose of 2.0×10^2/larva. Susceptibility of the larvae that had been stored at 6℃ to strain HF293 gradually decreased over the first three months of storage but stabilized by the fourth month. The results of a field study of larvae in flowerpots indicated that the survival rate of larvae decreased with increasing doses of conidia of M. anisopliae strain HF293.
- 日本応用動物昆虫学会の論文
- 2003-11-25
著者
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Ihara Fumio
National Inst. Of Fruit Tree Sci.
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Ihara F
National Institute Of Fruit Tree Science
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TOYAMA Masatoshi
National Institute of Fruit Tree Science
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SATO Takeru
National Institute of Fruit Tree Science
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