title: Spatiotemporal distribution of Chinavia hilaris (Hemiptera: Pentatomidae) in corn farmscapes.
abstract: 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 corn cropping systems. Therefore, the spatiotemporal distribution of C. hilaris in farmscapes, when corn was adjacent to cotton, peanut, or both, was examined weekly. The spatial patterns of C. hilaris counts were analyzed using Spatial Analysis by Distance Indices methodology. Interpolated maps of C. hilaris density were used to visualize abundance and distribution of C. hilaris in crops in corn-peanut-cotton farmscapes. This stink bug was detected in six of seven corn-cotton farmscapes, four of six corn-peanut farmscapes, and in both corn-peanut-cotton farmscapes. The frequency of C. hilaris in cotton (89.47%) was significantly higher than in peanut (7.02%) or corn (3.51%). This stink bug fed on noncrop hosts that grew in field borders adjacent to crops. The spatial distribution of C. hilaris in crops and the capture of C. hilaris adults and nymphs in pheromone-baited traps near noncrop hosts indicated that these hosts were sources of this stink bug dispersing into crops, primarily cotton. Significant aggregated spatial distributions were detected in cotton on some dates within corn-peanut-cotton farmscapes. Maps of local clustering indices depicted small patches of C. hilaris in cotton or cotton-sorghum at the peanut-cotton interface. Factors affecting the spatiotemporal dynamics of C. hilaris in corn farmscapes are discussed.
authors.affiliation: United States Department of Agriculture, Agricultural Research Service, Southeastern Fruit & Tree Nut Research Laboratory, 21 Dunbar Rd., Byron, GA 31008 Ted.Cottrell@ars.usda.gov.
authors.forename: Ted E
authors.initials: TE
authors.lastname: Cottrell
authors.affiliation: United States Department of Agriculture, Agricultural Research Service, Crop Protection & Management Research Laboratory, 2747 Davis Rd., Tifton, GA 31793.
authors.forename: P Glynn
authors.initials: PG
authors.lastname: Tillman
mesh_terms: D000383:Agriculture; D063147:Animal Distribution; D000818:Animals; D005260:Female; D062305:Geographic Mapping; D005845:Georgia; D020062:Heteroptera / Q000254:growth & development / Q000502:physiology*; D008297:Male; D009758:Nymph / Q000254:growth & development / Q000502:physiology; D012621:Seasons; D003313:Zea mays
keywords: SADIE methodology; field border; inverse distance weighting; noncrop host plant; spatial distribution
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