-69 -Text of Presentation by Dr. Al Glen at the Amami International Feral Cat Symposium on 6 Dec 2015 Slide1: Konichiwa. Firstly I would like to thank all of you for the opportunity to be here and to speak to all of you. For me islands like Amami O-shima are the most important and most exciting places in the world for conservation of wildlife for a number of reasons. First of all, almost half of the endangered plants and animals in the world are found only on islands. And secondly, unlike large land masses where it has often been impossible to remove the threats that have endangered these species, on islands, because of the small area it’s often possible to deal with the problem much more eectively. One of the most important contributing factors which has led to the decline or extinction of so many plants and animals around the world is the eects of predators such as the mongoose and the feral cat.Slide2: First I will give you a brief outline of what I’m going to talk about today. I’ll begin by giving a brief history of eradications of introduced species from islands in New Zealand, where I am from, and then I’ll move on to focus specically on the eradications of cats by taking a more global view. Next I’ll describe some of the environmental, social and economic benets that have arisen from eradicating feral cats from islands. And then I’ll move on to discuss some of the risks that can be involved in an eradication program and some of the challenges that can be faced, and describe why it’s important before beginning an eradication program to have a thorough assessment of feasibility. Once the feasibility study has been completed we often find that eradication is the most appropriate option, but in some cases it’s not and so I’ll finish off by discussing some other alternative approaches when eradication is not the preferred option.Slide3: So the rst eradication of an introduced species in New Zealand took place in 1912 and that was the eradication of European rabbits, which are nothing like the Amami rabbit, from a very small island of only ve hectares Since that time there have been almost 500 successful eradications of 20 dierent invasive species from islands in New Zealand, so this represents more than one third of successful eradications around the world and this has included species such as rats and mouse, marsupials such as possums as well as large herbivores like goats and of course predators like cats. And as an example of what can be achieved, the photograph at the bottom of this slide is of an island in the harbor in Auckland, the city where I live, and 12 dierent species of introduced mammals have been eradicated from this island.４．アル・グレン博士の講演記録
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