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Spatial distribution of stink bugs (hemiptera: pentatomidae) in wheat
1Clemson University, School of Agricultural, Forest, and Environmental Sciences, Pee Dee Research and Education Center, 2200 Pocket Road, Florence, SC 29506-9727.
Journal of Insect Science (Online)
|September 11, 2014
Summary
Stink bugs aggregated in South Carolina wheat fields, with higher populations near fallow areas. Their spatial distribution remained consistent across sampling dates, indicating potential for buildup before moving to other crops.
Area of Science:
- Agricultural Entomology
- Pest Management
- Spatial Ecology
Background:
- Stink bugs (Hemiptera: Pentatomidae) are significant pests in wheat (Triticum aestivum L.).
- Understanding their spatial and temporal dynamics is crucial for effective management strategies.
Purpose of the Study:
- To investigate the spatial and temporal distribution of stink bugs in South Carolina wheat fields.
- To identify key stink bug species and their aggregation patterns.
Main Methods:
- A two-year study using weekly sweep net sampling in wheat fields.
- Grid sampling plan and Spatial Analysis by Distance IndicEs (SADIE) were employed.
- Analysis of adult and nymph populations of major stink bug species.
Main Results:
- Four main phytophagous stink bug species were identified: Euschistus servus, Oebalus pugnax, Nezara viridula, and Thyanta custator.
- Adult stink bug densities were 2.1-fold higher adjacent to fallow fields than woods.
- SADIE revealed significant aggregation in 35% of analyses for both adults and nymphs.
Conclusions:
- Stink bugs exhibit aggregated spatial distributions within wheat fields.
- Spatial associations were observed between stink bug populations and wheat growth stages.
- Findings suggest potential for stink bug buildup in wheat, necessitating further research into control measures and crop-to-crop movement.
