Evaluation and cost-benefits of controlling house mice (Mus domesticus) on islands: an example from Thevenard Island, Western Australia

摘要: Abstract Feral mammals occur on many offshore islands around Australia, but their eradication by poison-baiting requires a careful assessment of the associated costs and long-term benefits. This paper describes replicated trial program to poison house mice Mus domesticus selectively Thevenard Island, Western in presence native species mouse, evaluate whether from island is an achievable cost-effective goal. It was found densities survivorship declined more grids with bait stations spaced every 10 m than baited 20 when compared unbaited (control) grids. On one grid m, abundance 83% 22 days after baiting commenced. decline correlated increase short-tailed Leggadina lakedownensis grid. A total 55 person required conduct present trials, expenses incurred were over $AUS1000 ha−1. Baiting for can prove costly excercise, management organisations need assess ground-based efficacious option if complete fails.