期刊
JOURNAL OF MEDICAL ENTOMOLOGY
卷 47, 期 5, 页码 862-867出版社
OXFORD UNIV PRESS INC
DOI: 10.1603/ME10020
关键词
tick control; Ixodes scapularis; entomopathogen; fungi; biological control
资金
- Centers for Disease Control and Prevention [5 - U01 CI 000167]
- Connecticut Department of Public Health
- Novozymes Biologicals
Field efficacy of an emulsifiable concentrate formulation of the entomopathogenic fungus Metarhizium anisopliae strain F52 for the control of Ixodes scapularis nymphs was evaluated at residential sites in northwestern Connecticut in 2007. Two spray applications with two rates, 3.2 x 10(5) and 1.3 x 10(6) spores/cm(2), were made: the first on 8-9 May, 2-3 wk before nymphal activity, and the second on 29 June or 2 July when ticks were active. There was no significant difference in nymphal abundance between the three treatment groups (P = 0.490) after the first application, indicating that preseason or early applications are not effective, despite a bioasaay with yellow mealworms that showed spores in the treated areas was infective for at least 1 mo postapplication. By contrast, there was a significant difference in the number of nymphs collected between the treatments and control 3 wk (F = 16.928, df = 2, P < 0.001) and 5 wk (F = 6.627, df = 2, P = 0.002) after the second application. During the 3 wk after the second application, 87.1 and 96.1% fewer ticks were collected from lower and higher rate-treated sites, respectively, and after 5 wk, tick reductions were 53.2 and 73.8%, respectively. Over one- third (36.4% of 173) of the nymphs collected from the treated sites developed mycosis from M. anisopliae. The application of M. anisophae strain F52 could provide another tool for the integrated approach to managing ticks in the residential landscape.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据