Land Resources & Environmental Sciences Professional Paper Presentation
- Monday, April 27, 2015 from 10:00am to 11:00am
- Leon Johnson Hall, Room 325 - view map
Beth Eiring, M.S. Candidate in Land Resources & Environmental Sciences (online program), will present "Introduction and Establishment Risk Assessment of the Japanese Beetle (Popillia japonica Newman) in Montana" at 10:00 a.m. in 325 Leon Johnson Hall.
Risks of invasive species have been estimated using invasive species risk assessments. Invasive species are very expensive to eradicate once established. The best approach is to keep invasive species from establishing is by determining pathways of introduction and eliminating or reducing the potential of invasion. This study estimated introduction and establishment risks associated with the invasive species Japanese beetle (Popillia japonica Newman). Japanese beetle is an insect that is federally regulated by the United States Department of Agriculture and by the state of Montana Department of Agriculture. There is an existing population of Japanese beetle in the Billings area that is quarantined to prevent the spread of the insect from that area. The highest risk of introduction of Japanese beetle is on plant material being imported from out of state nurseries in infested areas. Warm early season temperatures and adequate moisture are the two main condition requirements for a reproducing population to survive and establish. The highest risk areas are near importing nurseries with irrigated turf and host plant material. These areas are in the south-central and east-central portions of the state. Future trapping for initial detection should occur near all areas at high risk for introduction, regardless of establishment risk near these areas, because of the tendency to move host material within the state. Based on this study, these areas will be near 105 high-risk importing nurseries identified by this study. Based on the estimates of risk of establishment from degree-day accumulations, water and humidity, and favorable topography, areas at high risk of establishment after introduction should receive the highest priority for follow-up monitoring.
- Department of Land Resources and Environmental Sciences