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Biological control for predation invasion based on pair approximation.

Zhiyin Gao1, Sen Liu1, Weide Li1,2,3

  • 1School of Mathematics and Statistics, Lanzhou University, Lanzhou 730000, China.

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|August 29, 2022
PubMed
Summary
This summary is machine-generated.

Introducing control species earlier improves biological control of invasive species. Optimal control requires balancing predation preference for native versus invasive species, with higher preference for invasives being more effective.

Keywords:
biological controlbiological invasioncellular automatadispersion strategypair approximationpredation preference

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Area of Science:

  • Ecology
  • Conservation Biology
  • Mathematical Biology

Background:

  • Biological invasions pose significant threats to native ecosystems.
  • Effective biological control strategies are crucial for managing invasive species.
  • Selecting appropriate control species and optimizing their introduction is a key research focus.

Purpose of the Study:

  • To investigate the spatial dynamics of biological invasion and control using a food web model.
  • To analyze the impact of invasive species dispersal strategies and control species predation preferences.
  • To determine optimal introduction times, densities, and spatial structures for control species.

Main Methods:

  • A food web model was established using pair approximation, incorporating native, invasive, and control species.
  • Spatial dynamics, dispersal strategies (local vs. global), and predation preferences were considered.
  • The influence of initial control species density, spatial structure, and release time was analyzed.

Main Results:

  • Earlier introduction of control species generally leads to better control, particularly for globally dispersing invasives.
  • Control species predation preference for invasive species positively correlates with control effectiveness.
  • Excessive predation on native species or insufficient predation on invasive species can hinder control success.

Conclusions:

  • The timing of control species introduction is critical for successful biological invasion management.
  • Balancing predation pressure between native and invasive species is essential for effective control.
  • Initial density and spatial aggregation of control species significantly impact invasive species extinction.