Physiological ecology has grown in importance as an area of biology in the past thirty years and integrates the diverse approaches used in the comparative biology of organisms. Biologists segregate their approaches by technique and concept, but the boundaries among ecology, behavior, anatomy, and physiology are arbitrary and of no significance to organisms. Physiological ecology emphasizes the diversity of not only organisms, but also of solutions to (and evasions of) problems posed by the environment.In a comprehensive and authoritative synthesis of physiological ecology supported by more...