Ph.D. University of Sheffield; D.Sc. University of Sheffield M.Sc. University of British Columbia;

Animal Biology Physiology

Dr. Butler is interested in the following areas of research: (1) hormonal control of osmoregulation in aquatic vertebrates; (2) co-evolution of the RAS (renin-angiotensin system) and sympathetic nervous systems in vertebrate animals; (3) Evolution of the structure and function of the vertebrate adrenal cortex; (4) Hormonal control of cardiovascular function in fishes and birds.

Pressor responses to alligator Angiotensin I and some analogs in the spectacled caiman (Caiman crocodilus).Butler DG.Gen. Comp. Endocrinol. 2006 Jun;147(2):150-7 pubmed Renal responses to mesotocin in Western painted turtles compared with the antidiuretic response to arginine vasotocin.Butler DG, Snitman FS.Gen. Comp. Endocrinol. 2005 Nov;144(2):101-9 pubmed Hypertonic fluids are secreted by medial and lateral segments in duck (Anas platyrhynchos) nasal salt glands.Butler DG.J. Physiol. (Lond.) 2002 May;540(Pt 3):1039-46 pubmed