This book addresses these topical issues and is based on a Discussion Meeting held at the Royal Society, London, in April 1998. Contributors include scientists from leading research groups in Europe, North America, Asia and Australia. The papers have also been published as an issue of the journal Philosophical Transactions: Biological Sciences, published by the Royal Society. Topics covered include molecular genetics, mechanisms, ecological genetics and management. There is also discussion of the genetically delivered toxicant derived from the insect pathogen Bacillus thuringiensis. The book is essential reading for agricultural, medical and veterinary entomologists concerned with pest management.