Mollusc species currently constitute a major threat to sustainable agriculture. This threat is associated with cultivation of new crops, intensification of agricultural production systems and the spread through human trade and travel of species adapted to these modified environments. In some crops their significance is only now becoming apparent with the decline in the importance of other pest groups which can be effectively controlled. The book focuses on: toxicology of chemicals; deployment of molluscicides in baits; specific crop situations worldwide; current pest status of mollusc species and progress towards development of solutions.

For many years the use of chemical agents such as pesticides and herbicides has been effective in controlling the many varieties of pests that infest both agricultural crops and backyard gardens. However, these pests are gradually becoming resistant to these agents, because the agents themselves are acting as selective factors making the pests better and better able to resist and persist. As a result, the use of biological controlling agents is increasing. This book is a comprehensive and authoritative handbook of biological control.

Set includes revised editions of some issues.

Part I: Introduction to Universal Virus Taxonomy. Part II: The Viruses. A Glossary of Abbreviations and Terms. Taxa Listed by Nucleic Acid and Size of the Genome. The Virus Diagrams. The Virus Particle Structures. The Order of Presentation of the Viruses. The Double Stranded DNA Viruses. The Single Stranded DNA Viruses. The DNA and RNA Reverse Transcribing Viruses. The Double Stranded RNA Viruses. The Negative Sense Single Stranded RNA Viruses. The Positive Sense Single Stranded RNA Viruses. The Unassigned Viruses. The Subviral Agents. Viroids. Satellites. Vertebrate Prions. Fungal Prions. Part III: The International Committee on Taxonomy of Viruses. Officers and Members of the ICTV, 1999-2002. The Statutes of the ICTV, 1998. The Code of Virus Classification and Nomenclature,1998. Part IV: Indexs. Virus Indexs. Taxonomic Index.