Hi, We only have to remember that Varroa Jacobsoni was spread to the west by the introduction of Apis Mellifera into (and return from) the far east to understand the potential seriousness of species introduction. There are many non-beekeeping examples. -- Gordon Scott [log in to unmask] 100332,3310 on CompuServe Newsletter [log in to unmask] ditto Beekeeper, Kendo Sandan, sometime sailor. Basingstoke, Hampshire, RG22 5HP, UK