• 제목/요약/키워드: Tetranychus

검색결과 180건 처리시간 0.046초

Insecticidal Activity of Paecilomyces fumosoroseus SFP-198 as a Multi-Targeting Biological Control Agent against The Greenhouse Whitefly and The Two-Spotted Spider Mite

  • Kim, Jae-Su;Roh, Jong-Yul;Choi, Jae-Young;Shin, Sang-Chul;Jeon, Mun-Jang;Je, Yeon-Ho
    • International Journal of Industrial Entomology and Biomaterials
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    • 제17권2호
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    • pp.181-187
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    • 2008
  • An entomopathogenic fungus, Paecilomyces fumosoroceus SFP-198 was isolated in Kyungbuk province, Korea and screened out for the control of Trialeurodes vaporariorum nymphs. It showed 72.5% efficacy against second instars of T. vaporariorum nymphs at 6 days after treatment in the laboratory. To select an active ingredient for the mass production and the formulation, SFP-198 culture products were compared based on their insecticidal activities against T. vaporariorum nymphs. Among them, conidia and blastospores showed much higher insecticidal activity than supernatants. Furthermore, SFP-198 conidia were more heat-resistant than blastospores, and also powder form of conidia was more stable than their suspension form. SFP-198 conidia showed high pathogenicity on not only T. vaporariorum but also Tetranychus urticae in the glasshouse. This result suggested that SFP-198 conidia can be used as a multi-targeting biological control agent against sucking agri- cultural pests, such as whiteflies and mites.

S-Aryl Arenethiosulfonate 유도체의 살응애력과 살란력 (Acaricidal Activity of S-Aryl Arenethiosulfonates)

  • 이상익;박창규;금영수
    • Applied Biological Chemistry
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    • 제40권3호
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    • pp.249-253
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    • 1997
  • 19종의 S-Aryl arenethiosulfonate 유도체를 합성하여 살응애력 및 살란력을 검정하였다. 치환 thiophenol, chloronitrobenzene, 치환 aniline 등으로부터 합성된 diphenyl disulfide 유도체와 m-choroperoxybenzoic acid 와의 산화반응을 통하여 목적화합물을 얻었다. 점박이응애(Tetranychus urticae) 성충 및 알에 대한 유도체들의 살충 효과를 검정한 결과, 3종의 para 치환체가 50% 이상의 강한 살란효과를 나타냈으나 성충에 대하여는 호과가 없었다. Ovex, genite등의 살응애력을 지닌 sulfonate계 화합물이 meta 또는 para chloro 치환체인 반면에 thiosulfonate계 화합물의 meta또는 para-choro 치환체는 활성이 없었다.

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