Book excerpt: The Biology of Nematodes synthesizes knowledge of the biology of free-living, plant-parasitic, and animal-parasitic nematodes. Contributed works by recognized researchers apply groundbreaking molecular techniques, many of which resulted from work on Caenorhabditis elegans, toward new approaches to the study of nematode worms. Topics covered include: ̈ Systematics and phylogeny ̈ Neuromuscular physiology ̈ Locomotion ̈ Sense organs ̈ Behavior ̈ Aging ̈ The nematode genome ̈ Survival strategies ̈ Immunology ̈ Epidemiology ̈ Structure and organization ̈ Gametes and fertilization ̈ Development ̈ Feeding, digestion, and metabolism