A study of the relations of organisms to one another and to their surrounding physical environment, with an emphasis on understanding how physiological traits of animals affect their geographic distributions and interactions with one another. Topics include hormonal control of development, metabolic changes in response to environmental change, physiological costs of reproduction, disease ecology, and physiology of behavior. Labs involve field collections and sampling as well as indoor activities measuring animal physiological responses to various ecological conditions. One laboratory per week. Prerequisites: BIO*220, BIO*221, and FSBIO*201. Distribution Requirements: QR, SP.