Management of invasive Allee species

Authors

  • D. M. Chan Department of Mathematics and Applied Mathematics, Virginia Common wealth University, Richmond, VA, USA Author
  • C.M. Kent Department of Mathematics and Applied Mathematics, Virginia Common wealth University, Richmond, VA, USA Author
  • D.M. Johnson Department of Biology, Virginia Common wealth University, Richmond, VA, USA Author

DOI:

https://doi.org/10.30707/LiB4.1Chan

Keywords:

Allee species, Invasion, Discrete model, Management

Abstract

In this study, we use a discrete, two-patch population model of an Allee species to examine different methods in managing invasions. We first analytically examine the model to show the presence of the strong Allee effect, and then we numerically explore the model to test the effectiveness of different management strategies. As expected invasion is facilitated by lower Allee thresholds, greater carrying capacities and greater proportions of dispersers. These effects are interacting, however, and moderated by population growth rate. Using the gypsy moth as an example species, we demonstrate that the effectiveness of different invasion management strategies is context-dependent, combining complementary methods may be preferable, and the preferred strategy may differ geographically. Specifically, we find methods for restricting movement to be more effective in areas of contiguous habitat and high Allee thresholds, where methods involving mating disruptions and raising Allee thresholds are more effective in areas of high habitat fragmentation.

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Published

2023-11-22

Issue

Section

Research

How to Cite

Management of invasive Allee species. (2023). Letters in Biomathematics, 4(1), 167–186. https://doi.org/10.30707/LiB4.1Chan

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