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- Title
Insecticidal efficacy of Isaria farinosa in different life stages of Pissodes punctatus (Coleoptera: Curculionidae).
- Authors
Yang, Song; Zhuang, Hui; Li, Yonghe; Kuang, Rongping
- Abstract
The insecticidal activity of an entomopathogenic fungus, Isaria farinosa on pine bark-weevil ( Pissodes punctatus) at different life stages underwent laboratory testing. Larvae, pupae and adults of Pissodes punctatus were exposed to a range of concentrations of fungal conidia in suspension for 5 s; mean mortality and LC50 values were calculated. The results showed I. farinosa can effectively infect larvae, pupae and adult pine bark-weevils, and the highest mean mortalities at each life stage can exceed 88%. The mean mortalities increased with higher concentrations of I. farinosa. Larvae were most susceptible with LC50 1.2 × 106 conidia ml−1 (15 days), pupae (30 days) exhibited the second largest effects, and adults (15 days) with LC50 1.72 × 106 and 1.99 × 106 conidia ml−1, respectively, at end of the experiments. This suggests that I. farinosa could be a potential bio-control agent against the pine bark-weevil.
- Subjects
FUNGI; BEETLES; BARK-weevil; FUNGUS weevils; LARVAL microbiology; PUPAE; FUNGI imperfecti; INSECTICIDAL plants
- Publication
Journal of Pest Science, 2009, Vol 82, Issue 4, p321
- ISSN
1612-4758
- Publication type
Article
- DOI
10.1007/s10340-009-0256-y