The classical fields of comparative endocrinology and neurobiology are gaining new momentum from the many projects involved with the sequencing of animal genomes. This volume covers recent and new developments in the fields of vertebrate and invertebrate endocrinology and neuroendocrinology. The comparative approach has proven to be one of the most rewarding to study gene functions and is a key component of functional genomics. The interactions between comparative endocrinology and genome sequencing as well as developmental biology and neurobiology are providing many exciting discoveries. Comparative endocrinology is highly suitable for translation of the knowledge of gene structure into insights into the physiology of organisms. NOTE: Annals volumes are available for sale as individual books or as a journal. For information on institutional journal subscriptions, please visit www.blackwellpublishing.com/nyas. ACADEMY MEMBERS: Please contact the New York Academy of Sciences directly to place your order (www.nyas.org). Members of the New York Academy of Science receive full-text access to the Annals online and discounts on print volumes. Please visit http://www.nyas.org/MemberCenter/Join.aspx for more information about becoming a member.