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Tracking the North American Asian Longhorned Beetle Invasion With Genomics.

Mingming Cui^1,2, Amanda D Roe³, Brian Boyle¹

¹Institut de Biologie Intégrative et des Systèmes Université Laval Quebec City Quebec Canada.

Evolutionary Applications

|November 21, 2024

Summary

Genomic analysis reveals multiple introductions of the Asian longhorned beetle (Anoplophora glabripennis) into North America. This invasive pest

Keywords:

biosurveillance introduction source invasion history invasive species secondary spread

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Area of Science:

Ecology
Genomics
Entomology

Background:

Biological invasions, particularly by pests like the Asian longhorned beetle (Anoplophora glabripennis), threaten ecological and economic stability.
Effective management of invasive species requires detailed knowledge of their biology and invasion pathways.

Purpose of the Study:

To address knowledge gaps in the invasion history and spread patterns of the Asian longhorned beetle in North America using genomic data.
To inform and enhance existing biosurveillance frameworks for invasive pests.

Main Methods:

Analysis of 2768 genome-wide single nucleotide polymorphisms (SNPs).
Comparison of invasive Anoplophora glabripennis populations across North America.
Genomic variation was used to trace invasion sources and spread patterns.

Main Results:

Most North American Anoplophora glabripennis infestations originated from multiple, independent introductions from the native range.
Invasive populations experienced a genetic bottleneck followed by expansion, with some evidence of secondary spread.

Conclusions:

The study provides a foundation for a genome-based biosurveillance tool for invasive species.
This tool can clarify the origin of intercepted individuals, enabling regulatory agencies to improve biosecurity measures against the Asian longhorned beetle.