Spatiotemporal Distribution of Chinavia hilaris (Hemiptera: Pentatomidae) in Peanut-Cotton Farmscapes

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摘要：

The green stink bug,Chinavia hilaris(Say) (Hemiptera: Pentatomidae), is a pest of cotton in the southeastern United States, but little is known concerning its spatiotemporal distribution in agricultural farmscapes. Therefore, spatiotemporal distribution ofC. hilarisin farmscapes where cotton fields adjoined peanut was examined weekly. Spatial patterns ofC. hilariscounts were analyzed using SADIE (Spatial Analysis by Distance Indices) methodology. Interpolated maps ofC. hilarisdensity were used to visualize abundance and distribution ofC. hilarisin crops. For the six peanut-cotton farmscapes studied, the frequency ofC. hilarisin cotton (94.8%) was significantly higher than in peanut (5.2%), and nymphs were rarely detected in peanut, indicating that peanut was not a source ofC. hilarisinto cotton. Significantly, aggregated spatial distributions were detected in cotton. Maps of local clustering indices depicted patches ofC. hilarisin cotton, mainly at field edges including the peanut-to-cotton interface. Black cherry (Prunus serotinaEhrh.) and elderberry (Sambucus nigrasubsp.canadensis[L.] R. Bolli) grew in habitats adjacent to crops,C. hilariswere captured in pheromone-baited stink bug traps in these habitats, and in most instances,C. hilariswere observed feeding on black cherry and elderberry in these habitats before colonization of cotton. Spatial distribution ofC. hilarisin these farmscapes revealed thatC. hilariscolonized cotton field edges near these two noncrop hosts. Altogether, these findings suggest that black cherry and elderberry were sources ofC. hilarisinto cotton. Factors affecting the spatiotemporal dynamics ofC. hilarisin peanut-cotton farmscapes are discussed.

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关键词：

inverse distance weighting SADIE methodology spatial distribution noncrop host plant

DOI：

10.1093/jisesa/iev081

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年份：

2015