An analysis of historical records of the exotic birds, mammals and finfish introduced to Australia shows that several factors distinguish between species that successfully established wild populations and those that failed. For example, for all three taxa a good climate match to Australia, a large overseas geographic range and a history of successfully establishing exotic populations overseas are correlated with successful establishment in Australia. These factors are used to develop more quantitative models to assess the risk of establishment. The number of introduction events is also strongly correlated with establishment success for all three taxa. This means that if more exotic animals are kept in more places, they are more likely to establish wild populations.
Although too few exotic reptiles and amphibians have been introduced to Australia to enable comparable analyses to be conducted, adequate sample sizes exist for the USA and Britain. These data are being analysed to see if the same factors are correlated with establishment success for these taxa.
|Secondary title||13th Australasian Vertebrate Pest Conference|
|Place published||Conference Location|
|Institution||Bureau of Rural Sciences|
|Region||Australia - national|