Diagram of transportation related pathways including all the various pathways related to the transportation of people and goods, such as miltary travel and transportation of military vehichles. Created by Don MacLean USFWS
Vectors and Pathways
USDA. Animal and Plant Health Inspection Service
Citrus greening is one of the more serious diseases of citrus. The bacterial disease is spread by the Asian citrus pysllid. This site provides links to news, national program and state partner information.
Diagram of living industry pathways for the spread of invasive species; including all pathways associated with living organisms or their by-products. Created by Don MacLean, USFWS
Pathways not covered under transportation or living industries, including biocontrol; other aquatic pathways; natural spread; and ecosystem disturbance. Created by Don MacLean USFWS
USDA, National Invasive Species Information Center
Resources related to pathways and risk assessment
USDA. APHIS. Plant Protection and Quarantine. Center for Plant Health Science and Technology.
The Program focuses on collecting and interpreting scientific evidence and technical information regarding plant pest risks. This information is used to design risk-based policies and regulation for import, export, and domestic programs.