The University of Queensland, School of Animal Studies, Warrego Highway, Gatton QLD 4343;
National Wildlife Research Centre, 4101 LaPorte Avenue, Fort Collins, CO 80521-2154, USA(Richard.M.Engeman @ aphis.usda.gov);
Biosecurity Queensland, Robert Wicks Pest Animal Research Centre, Tor Street, Toowoomba, QLD 4350(Lee.Allen@deedi.qld.gov.au);