59:40 duration 59 minutes 40 seconds
Steven Seybold
Research Entomologist, USDA Forest Service, Pacific Southwest Research Station Bark Beetles, Woodborers, and California Trees: Impact and Management of Native and Invasive Species
56:15 duration 56 minutes 15 seconds
Dr. Richard Hofstetter
Northern Arizona University “Effects of the host plant on symbiotic associates of bark beetles.”