2022 Invasive Shothole Borers-Fusarium Dieback Symposium

UC Agriculture and Natural Resources will host a free, online ISHB-FD Symposium from 1 to 4 p.m. on April 27 and 28, 2022. 

See Complete Agenda


Invasive shothole borers (ISHB) are beetles that tunnel into trees and introduce a fungal disease (Fusarium dieback) that can cause tree death. Well established in many areas of Southern California and the Central Coast, the beetle-disease complex has killed thousands of trees. It continues to spread, threatening the integrity of California’s urban and riparian forests. 

Designed for land managers, arborists, and other professionals whose work includes tree health and/or pest management, the 2022 Invasive Shothole Borers-Fusarium Dieback Symposium will provide an in depth look at the pest-disease complex, impacts and risks, best practices in control and management, and practical examples of successful management approaches. 

Presenters include:

  • Beatriz Nobua-Behrmann, Urban Forestry and Natural Resources Advisor, University of California Cooperative Extension (UCCE)
  • Akif Eskalen, Professor of Extension in Plant Pathology, University of California, Davis
  • Kelly Parkins, Plant Health Care Coordinator, West Coast Arborists, Inc.
  • Danny Hirchag, IPM and Sustainability Manager, OC Parks
  • John Kabashima, Environmental Horticulture Advisor, Emeritus, UCCE
  • Rosi Dagit, Senior Conservation Biologist, Resource Conservation District of the Santa Monica Mountains
  • Maximiliano Regis, Deputy Director, and Rachel Burnap, Associate Inspector,  County of Los Angeles Department of Agricultural Commissioner/Weights and Measures
  • Karen Jetter, Associate Project Economist, UC Agricultural Issues Center
  • Shannon Lynch, Plant Pathology, University of California, Davis
  • Richard Stouthamer, Professor of Entomology, University of California, Riverside
  • Randall Oliver, Statewide ISHB Communications Coordinator, UC Statewide Integrated Pest Management Program

Continuing Education Units

CEUs from DPR and WCISA have been requested for each day.

Just as a reminder, here are the requirements for receiving the CEUs:

  • register separately with your own name and email address and log in from your own device
  • participate in the entire session
  • complete and pass a final test with 70% or higher; if not passed, the test can be retaken
  • enter your license number on the form


If you are not familiar with Zoom, log in a few minutes early to familiarize yourself with the Zoom interface.

For more information, contact Randall Oliver at rdoliver@ucanr.edu.