Proceedings of the 16th Australian Weeds Conference

Invitation to attend: On behalf of the organising committee of the 16th Australian Weeds Conference, we cordially invite you to attend this biannual conference to be held in Cairns, Australia, 19-22 May 2008. The conference will be hosted by the Weed Society of Queensland and has the theme of ‘Weed Management 2008 – hot topics in the tropics’. The conference will showcase recent advances in weed science, extension and policy across Australian and international communities and landscapes. The program for the conference includes plenary, oral, and poster sessions and trade exhibitors. The conference will appeal to anyone involved in weed R & D, management and extension and will be a great opportunity to build new networks and explore existing ones. Michael Widderick (conference chair)

Virus species polemics: 14 senior virologists oppose a proposed change to the ICTV definition of virus species

The Executive Committee of the International Committee on Taxonomy of Viruses (ICTV) has recently decided to modify the current definition of virus species (Code of Virus Classification and Nomenclature Rule 3.21) and will soon ask the full ICTV membership (189 voting members) to ratify the proposed controversial change. In this discussion paper, 14 senior virologists, including six Life members of the ICTV, compare the present and proposed new definition and recommend that the existing definition of virus species should be retained. Since the pros and cons of the proposal posted on the ICTV website are not widely consulted, the arguments are summarized here in order to reach a wider audience.