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Optimising Control Device Luring Strategies for Invasive Predator Control: A Modelling Approach.

Giorgia Vattiato¹, Patrick M Garvey¹, Rachelle N Binny¹

¹Manaaki Whenua - Landcare Research Lincoln New Zealand.

Ecology and Evolution

|December 2, 2024

Summary

This summary is machine-generated.

Trap-shyness in invasive brushtail possums (Trichosurus vulpecula) can be quantified using Bayesian methods. Combining lures can improve trapping efficacy and achieve faster population reduction.

Keywords:

invasive species kill‐traps lure change pest eradication trap‐shyness

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Area of Science:

Ecology
Wildlife Management
Conservation Biology

Background:

Invasive predators threaten native biodiversity.
Trap-shyness in invasive species complicates population control and monitoring.
Effective lure strategies are crucial for maximizing trapping efficacy.

Purpose of the Study:

To quantify trap-shyness in invasive brushtail possums (Trichosurus vulpecula).
To simulate and evaluate different luring strategies for invasive predator control.
To inform wildlife management decisions for pest extirpation.

Main Methods:

Bayesian estimation to quantify trap-shyness in a wild brushtail possum population.
Development of a stochastic, individual-based model to simulate luring scenarios.
Analysis of capture data to infer population trappability.

Main Results:

The brushtail possum population exhibited distinct trappable and trap-shy groups.
A low mean nightly probability of trap interaction (0.28) was estimated.
Simulations indicated that simultaneous use of multiple lures enhances population knockdown compared to single lures or sequential switching.

Conclusions:

Wildlife managers can infer population trappability from capture data.
Optimized luring strategies, particularly using combined lures, can significantly improve invasive predator control.
Enhanced luring can be vital for capturing residual individuals in post-control populations.