Local dispersal of maleHelicoverpa zea |
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Authors: | Joseph D Culin |
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Institution: | (1) Cherry Farm Entomology Laboratories, Clemson University, Box 340365, Department of Entomology, 29634-0365 Clemson, SC, USA |
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Abstract: | Local dispersal ofHelicoverpa zea (Boddie) (Lepidoptera: Noctuidae) males as they emerged following the F1 and F2 generations in dent corn was examined in a 4 km diam. area in South Carolina, USA. Males were marked at artificial nectar
feeding stations using RbCl, and recovered in traps baited with a synthetic pheromone. Effects of nocturnal boundary layer
winds, crop pattern at the pheromone traps, and crop pattern between the marking area and pheromone traps were examined. Local
movement of captured male moths was predominantly downwind in both flights in both years of the study. Crop pattern at the
traps had no effect on capture of marked moths. During some flights, flowering crops between the marking area and traps had
a negative effect on the number of marked moths captured. |
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Keywords: | Helicoverpa zea dispersal trace-element marking rubidium mark-recapture |
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