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Published on: July 4, 2007
Riceland mosquito management practices for Anopheles quadrimaculatus larvae.
R A Allen1, W W Wilkes, C N Lewis
1Department of Entomology, 319 Agriculture Building, University of Arkansas, Fayetteville, AR 72701, USA.
Journal of the American Mosquito Control Association
|February 3, 2009
Summary
Bacillus thuringiensis var. israelensis (Bti) effectively controlled Anopheles quadrimaculatus mosquito larvae in rice fields. However, preflood lambda-cyhalothrin applications showed little impact on these mosquito populations.
Area of Science:
- Entomology
- Pest Management
- Environmental Science
Background:
- Anopheles quadrimaculatus is a significant mosquito vector.
- Rice fields provide crucial breeding habitats for mosquitoes.
- Effective larval control is essential for managing mosquito populations.
Purpose of the Study:
- To evaluate Bacillus thuringiensis var. israelensis (Bti) for Anopheles quadrimaculatus larval control in rice.
- To assess the impact of lambda-cyhalothrin on Anopheles quadrimaculatus larvae in rice fields.
Main Methods:
- Aerial ultra-low volume applications of Bti were tested in mid- to late-season rice.
- Preflood treatments of lambda-cyhalothrin were applied to rice fields.
- Larval populations of Anopheles quadrimaculatus were monitored post-treatment.
Main Results:
- Bti provided excellent initial control (>99% at 1 day) of Anopheles quadrimaculatus larvae.
- Bti's residual control was short-lived.
- Lambda-cyhalothrin demonstrated minimal effectiveness against Anopheles quadrimaculatus larvae.
Conclusions:
- Bti is a viable option for mosquito management personnel to control Anopheles quadrimaculatus larvae in late-season rice.
- Lambda-cyhalothrin is not effective for Anopheles quadrimaculatus larval control when applied preflood in rice fields.
