Resistance of pests to chemical pesticides is becoming a severe problem. This book collects some of the latest research on this problem and covers a wide range of issues, including molecular genetics, mechanisms, ecological genetics, and pest management. It includes research from Europe, North America, Asia, and Australia, and features a discussion of a genetically delivered toxicant derived from the insect pathogen Bacillus thuringiensis. The collection will be a valuable resource for agricultural, medical, and veterinary entomologists.