Dr. Stephan J. Schoech
Associate Professor - Department of Biology, University of Memphis
3774 Walker Ave. Memphis, TN 38152 - 901.678.2327(office) 901.678.2661(lab) 901.678.4457(fax)
Office: Life Sciences 335
PhD - 1995 University of Washington
I am an integrative organismal biologist with a focus on vertebrates, primarily birds. I have strong intellectual ties to and use techniques from behavioral ecology, environmental physiology, and comparative endocrinology. More specifically, I am interested in: 1) the effects of an animal's environment upon its physiology and the subsequent effects upon initiation of reproductive behaviors; 2) how the interactions between stress (e. g., corticosterone) and reproductive (e. g., testosterone and estradiol) affect an animal’s reproductive effort; 3) hormones and the hormonal mechanisms that mediate reproductive behaviors, especially parental and alloparental (i. e., helping to care for non-descendant young) behaviors; and 4) how social and within-pair interactions synchronize reproductive behavior. My research integrates techniques from a number of disciplines to address these fundamental questions in organismal biology.
For over ten years the primary model system I have used to examine these issues has been the cooperatively breeding Florida Scrub-Jay (Aphelocoma coerulescens). This is work that has been conducted at Archbold Biological Station in south-central Florida's disappearing xeric scrub-oak community and has been funded primarily by the National Science Foundation (NSF). Click HERE to read the proposal for our current NSF Grant.
Rensel, M. A., R. K. Boughton, and S. J. Schoech. 2010. Development of the adrenal stress response in the Florida scrub-jay (Aphelocoma coerulescens). General and Comparative Endocrinology. 165: 255-261.
Schoech, S. J., M. A. Rensel, E. S. Bridge, R. K. Boughton, and T. E. Wilcoxen. 2009. Environment, glucocorticoids, and the timing of reproduction. General and Comparative Endocrinology. 163: 201-207.
Schoech, S. J., E. S. Bridge, R. K. Boughton, S. J. Reynolds, J. W. Atwell, and R. Bowman. 2008. Food supplementation: A tool to increase reproductive output? A case study in the threatened Florida Scrub-Jay. Biological Conservation 141: 162.173.
Schoech, S. J., R. Bowman, E. S. Bridge, G. M. Morgan, M. A. Rensel, T. E. Wilcoxen, and R. K. Boughton. 2007. Corticosterone administration does not affect timing of breeding in Florida scrub-jays (Aphelocoma coerulescens) Hormones and Behavior 52: 191-196.
Schoech, S. J., R. Bowman, E. S. Bridge, and R. K. Boughton. 2007. Baseline and acute levels of corticosterone in Florida Scrub-Jays (Aphelocoma coerulescens): Effects of food supplementation, suburban habitat, and year. Genral and Comparative Endocrinology 154: 150-160.
Schoech, S. J. 2005. Physiology and helping in Florida Scrub-Jays. pp. 117 - 124, In: Exploring Animal Behavior: Readings from American Scientist 4th ed., P. W. Sherman and J. Alcock (eds.). Sinaur Publishing, Sunderland, Mass.
Schoech, S. J., S. J. Reynolds and R. K. Boughton. 2004. Endocrinology. pp. 128-141, In Ecology and Evolution of Cooperative Breeding in Birds W. D. Koenig and J. Dickenson (eds.). Cambridge University Press, Cambridge, Great Britain.
Schoech, S. J., R. Bowman, and S. J. Reynolds. 2004. Food supplementation and the mechanisms underlying early breeding in the Florida scrub-jay a role for corticosterone? Hormones and Behavior. 46: 565-573. PDF
Schoech, S. J. and R. Bowman. 2003. Does differential access to protein influence differences in timing of breeding of Florida Scrub-Jays (Aphelocoma coerulescens) in suburban and wildland habitats? Auk 120: 1114-1127. PDF
Reynolds, S. J., S. J. Schoech, and R. Bowman. 2003. Diet quality during prelaying and nestling periods influences growth and survival of Florida scrub-jay, Aphelocoma coerulescens, chicks. Journal of Zoology, London 261: 217-226. PDF
Reynolds, S. J., S. J. Schoech, and R. Bowman. 2003. Nutritional quality of pre-breeding diet influences breeding performance of the Florida Scrub-Jay a supplemental feeding study. Oecologica 134: 308-316. PDF
Owen-Ashley, N. T. S. J. Schoech, and R. L. Mumme. 2002. Context-specific response of Florida Scrub-Jay pairs to Northern Mockingbird vocal mimicry. Condor 104: 858- 865.
Schoech, S. J. and R. Bowman. 2001. Variation in the timing of breeding in two Florida Scrub-Jay (Aphelocoma coerulescens) populations Do physiologic measures reflect different environments? pp. 289-306. In: Avian Ecology and Conservation in an Urbanizing World, J. M. Marzluff, R. Bowman, and R. Donnelly (eds.). Kluwer Academic Press, Norwell, Massachusetts. PDF
Mumme, R. L., S. J. Schoech, G. E. Woolfenden, and J. W. Fitzpatrick. 2000. Life and death in the fast lane: Demographic consequences of road mortality in the Florida Scrub-Jay. Conservation Biology 14: 501-512. PDF
Maney, D. L., S. J. Schoech, P. J. Sharp, and J. C. Wingfield. 1999. Effects of vasoactive intestinal peptide on plasma prolactin in passerines. General and Comparative Endocrinology 113: 323-330.
Schoech, S. J., E. D. Ketterson, and V. Nolan Jr. 1999. Exogenous testosterone and the adrenocortical response in Dark-eyed Juncos. Auk 116: 64-72. PDF
Schoech, S. J., E. D. Ketterson, V. Nolan, Jr., P. J. Sharp, and J. D. Buntin. 1998. The effect of exogenous testosterone on parental behavior, plasma prolactin and prolactin binding sites in Dark-eyed Juncos. Hormones and Behavior 34: 1-10. PDF
Schoech, S. J., R. L. Mumme, and J. C. Wingfield. 1997. Breeding status, corticosterone, and body mass in the cooperatively breeding Florida scrub-jay Aphelocoma coerulescens. Physiological Zoology 70: 68-73.
Schoech, S. J. 1996. The effect of supplemental food on body condition and the timing of reproduction in a cooperative breeder, the Florida scrub-jay (Aphelocoma coerulescens). Condor 98: 234-244. PDF
Schoech, S. J., R. L. Mumme, and J. C. Wingfield. 1996. Delayed breeding in the cooperatively breeding Florida scrub-jay (Aphelocoma coerulescens) inhibition or the absence of stimulation? Behavioral Ecology and Sociobiology 39: 77-90. PDF
Schoech, S. J., R. L. Mumme, and J. C. Wingfield. 1996. Prolactin and helping behaviour in the cooperatively breeding Florida scrub-jay (Aphelocoma coerulescens). Animal Behaviour 52: 445-456. PDF
Schoech, S. J., R. L. Mumme, and M. C. Moore. 1991. Reproductive endocrinology and mechanisms of breeding inhibition in cooperatively breeding Florida Scrub-Jays (Aphelocoma c. coerulescens). Condor 93: 354-364. PDF
Click HERE to See Extended Curriculum Vitae
Click HERE to See List of Grants and other Funding Sources that have Supported this project.