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Nonnative pest establishment: Spatial patterns and public detection.

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Early pest detection aids rapid management. New pest establishment is more likely in populated areas near ports with suitable climates, while public detection is lower in high-value agricultural regions.

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Area of Science:

  • Agricultural Science
  • Ecology
  • Pest Management

Background:

  • Early detection of new pests is crucial for minimizing long-term ecological and economic impacts.
  • Understanding pest establishment risk and public detection rates informs effective surveillance strategies.
  • Formal early detection survey programs benefit from knowledge of pest invasion dynamics.

Purpose of the Study:

  • To identify county-level attributes associated with new pest establishment in the U.S.
  • To determine factors influencing whether new pests are detected by the public versus other sources.
  • To provide spatially explicit data for optimizing pest surveillance planning.

Main Methods:

  • Analysis of data from 113 new pest incursions in the United States (2010-2018).
  • Quantification of county-level locational, demographic, and economic factors.
  • Statistical modeling to assess pest establishment and detection likelihoods, controlling for sample selection bias.

Main Results:

  • Pest establishment likelihood increases with human population density, proximity to ports (<250 km), and favorable climate conditions.
  • Public detection is less likely in counties with high crop sales values and lower human populations.
  • High agricultural values correlate with reduced public detection, potentially due to increased professional surveillance.

Conclusions:

  • Spatially explicit models predict new pest establishment and public detection probabilities across U.S. counties.
  • Findings support targeted surveillance planning by providing quantitative inputs for decision-making.
  • Understanding detection sources is key to enhancing the efficiency of early pest detection programs.