| Title: | Establishment of Striacosta albicosta (Lepidoptera: Noctuidae) as a Primary Pest of Corn in the Great Lakes Region |
| Author(s): | Smith JL; Baute TS; Sebright MM; Schaafsma AW; DiFonzo CD; |
| Address: | "Department of Plant Agriculture, University of Guelph, Ridgetown Campus, E. Ridgetown, ON, Canada. Ontario Ministry of Agriculture, Food and Rural Affairs, E. Ridgetown, ON, Canada. Department of Entomology, Michigan State University, East Lansing, MI" |
| ISSN/ISBN: | 1938-291X (Electronic) 0022-0493 (Linking) |
| Abstract: | "Western bean cutworm, Striacosta albicosta Smith (Lepidoptera: Noctuidae), is a pest of corn, Zea maize L., and dry edible beans, Phaseolus sp. L., native to the western United States. Following the range expansion into the U.S. Corn Belt, pheromone trap monitoring began in the Great Lakes region in 2006. The first S. albicosta was captured in Michigan in 2006 and in Ontario, Canada in 2008. Pheromone traps were used to document spread and increasing captures of S. albicosta across Michigan and Ontario until 2012. Trapping confirmed the univoltine life cycle of S. albicosta in this region and identified peak flight, typically occurring in late July. Overwintering of S. albicosta in this region was confirmed by emergence from infested fields and overwintering experiments. Multiple soil textures were infested with prepupae, and recovery was assessed throughout the winter. Overwintering success was not affected by soil texture; however, prepupae were found at greater depths in coarse-textured soils. Soil temperatures at overwintering depths did not reach the supercooling point. Injury to corn by S. albicosta increased in incidence, severity and geographic range from 2010 to 2014 in field plots. Decreasing control of injury by Cry1F corn hybrids was observed over time. These findings show that S. albicosta has established as a perennial corn pest in the Great Lakes region due to observations of overwintering success and unmanaged injury. We recommend S. albicosta obtain primary pest status in this region within regulatory framework and a resistance management plan be required for traits targeting this pest" |
| Keywords: | "Animals Bacterial Proteins Endotoxins Great Lakes Region Larva Michigan *Moths Ontario Plants, Genetically Modified *Zea mays Striacosta albicosta Bt corn monitoring overwintering primary pest;" |
| Notes: | "MedlineSmith, J L Baute, T S Sebright, M M Schaafsma, A W DiFonzo, C D eng Research Support, Non-U.S. Gov't England 2018/06/01 J Econ Entomol. 2018 Aug 3; 111(4):1732-1744. doi: 10.1093/jee/toy138" |
