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Invasive Species – Coming to America. Exotic insects - a growing problem. >1,554 exotic insect species in U.S. >4,500 exotic arthropod species in U.S. Increase due to international trade and travel. From R. Venette, USDA FS. Invasive species – not just insects. Plants aquatic terrestrial

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exotic insects a growing problem
Exotic insects - a growing problem
  • >1,554 exotic insect species in U.S.
  • >4,500 exotic arthropod species in U.S.
  • Increase due to international trade and travel

From R. Venette, USDA FS

invasive species not just insects
Invasive species – not just insects
  • Plants
    • aquatic
    • terrestrial
  • Animals
    • insects
    • fish
    • amphibians
    • birds
    • mammals
  • Pathogens
meaning of invasive
Meaning of “Invasive”

Polydrusus spp.

  • Species non-native to an environment may be called:
    • Alien
    • Exotic
    • Introduced
  • If they also cause harm to the economy, environment and / or human health they are called:
    • Invasive
  • Native species are not called invasive even if they do cause harm

Steve Katovich USDA Forest Serivce

Emerald ash borer

Jeff Hahn, University of Minnesota

Bronze birch borer

Steve Katovich USDA Forest Serivce

slide5

Invasive Species of Concern for Minnesota

  • Plants
    • Cut-leaved teasel
    • Dalmation toadflax
    • Yellow star thistle
    • Grecian foxglove
    • Black swallow-wort
    • Japanese knotweed
  • Survey
    • Visual surveys
slide6

Invasive Species of Concern for Minnesota

  • Pathogens / nematodes
    • Potato cyst nematode
    • Soybean rust
    • Sudden oak death
  • Monitoring
    • Soil / plant tissue collection
    • Laboratory analysis
slide7

Invasive Species of Concern for Minnesota

  • Insects
    • Emerald ash borer
    • Gypsy moth
    • European woodwasp
    • Light brown apple moth
    • Asian longhorned beetle
    • Exotic bark & ambrosia beetles
    • Swede midge
  • Survey
    • Traps baited with pheromone or other attractant
pest status absent

David R. Lance, USDA APHIS PPQ

Kenneth R. Law, USDA APHIS PPQ

Pest Status = Absent

Sirex Woodwasp

Asian longhorned beetle

Emerald Ash Borer

pest status established

Steve Katovich, USDA Forest Service

Pest Status = Established

White Pine Blister Rust

Common Buckthorn

Dutch Elm Disease

Maja Jurc, University of Ljubljana

prevention
Prevention
  • Pest Risk Assessment
    • Quantitative means to rate risk posed by various pests
  • Education
    • Inform public how invasive species are moved
  • Regulation
    • Legal actions such as inspection and quarantine
early detection
Early Detection
  • Surveys
    • Risk-based
  • Monitoring
    • Firewood & Nursery inspection
  • Citizen reports
    • Arrest the Pest Hotline
rapid response
Rapid Response
  • Emergency Quarantine
    • Stop artificial spread
  • Delimiting and Investigation
    • Determine the scale
    • Determine the source
  • Eradication or Suppression
    • Mitigate as able
management

Linda Haugen, USDA FS

Scott Bauer USDA ARS

David Cappaert, Michigan State University

Management
  • Silvicultural
    • Sanitation
  • Biological Control
    • Parasitoids, etc.
  • Chemical Control
    • Injections
  • Others
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