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Two-layered Membrane Sandwich Method for Laodelphax striatellus Saliva Collection

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Phylogeny and Functional Traits Jointly Shape Global Rice Pest Invasions.

Jiayuan Xie^1,2,3, Yuan Yuan^2,3, Ziqi Chen^1,2,3

¹State Key Laboratory of Breeding Biotechnology and Sustainable Aquaculture (CAS), Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China.

|May 26, 2026

Summary

Biological invasions by crop pests threaten food security. Evolutionary history and species traits jointly influence rice pest invasions, with fecundity being a key predictor. This informs biosecurity management.

Keywords:

crop protection invasion biology invasion mechanisms pest management phylogenetic relationships

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Area of Science:

Ecology
Evolutionary Biology
Agricultural Science

Background:

Biological invasions by crop pests pose significant threats to global food security.
Understanding the drivers of invasion success is crucial, especially in key agricultural systems like rice production.

Purpose of the Study:

To investigate how evolutionary history and species traits interact to influence the success of rice pest invasions.
To identify key traits and phylogenetic patterns associated with invasive species in rice agroecosystems.

Main Methods:

Compiled a global dataset of 129 rice pests, including ten functional traits.
Reconstructed a COI-based phylogeny to analyze evolutionary relationships.
Utilized Bayesian phylogenetic and non-phylogenetic generalized linear mixed models to assess invasion status.

Main Results:

Invasive rice pests were phylogenetically non-randomly distributed, with certain families showing high invasion rates.
Phylogenetic effects explained more variation in invasion status than individual traits.
Fecundity emerged as the strongest positive predictor of invasion, followed by host number, body length, and migration distance.

Conclusions:

Rice pest invasions are shaped by a combination of phylogenetic background and functional traits.
Phylogenetic information enhances the accuracy of invasion risk assessment.
Findings support the development of phylogeny-informed biosecurity and risk management strategies.