Graduate and undergraduate student publications from work completed while in the Crocker lab.

 

Sharick, J.T., J.P. Vazquez-Medina, R.M. Ortiz, D.E. Crocker.  Oxidative stress is a potential cost of breeding in male and female northern elephant seals. Functional Ecology (in press).

 

Ensminger, D.C., D.A. Somo, D.S. Houser, D.E. Crocker. 2014. Metabolic responses to adrenocorticotropic hormone (ACTH) vary with life-history stage in adult male northern elephant seals. General and Comparative Endocrinology. 204:150-157.

 

Crocker, D.E. M.A. Fowler, C.D. Champagne, A.L. Vanderlugt and D.S. Houser. 2014. Metabolic response to a glucagon challenge varies with adiposity and life-history stage in fasting northern elephant seals. General and Comparative Endocrinology 195:99-106.

 

Tift, M.S., P.J. Ponganis, and D.E. Crocker. 2014. Elevated carboxyhemoglobin in a marine mammal, the northern elephant seal. Journal of Experimental Biology. 217: 1752-1757.

 

Tift, M.S., E.L. Ranalli, D.S. Houser, R.M. Ortiz, and D.E. Crocker. 2013. Development enhances hypometabolism in northern elephant seal pups (Mirounga angustirostris). Functional Ecology. 27:1155-1165.

 

Tavoni, S.K., C.D. Champagne, D.S. Houser and D.E. Crocker. 2013. Lactate flux and gluconeogenesis in fasting, weaned northern elephant seals (Mirounga angustirostris). Journal of Comparative Physiology B. 4:537-546.

 

Champagne, C.D., S.M Boaz, M.A Fowler, D.S. Houser, D.P. Costa. and D.E Crocker. 2013. A profile of carbohydrate metabolites in the fasting northern elephant seal. Journal of Comparative Physiology D. 8:141-151.

 

Currylow, A.F., M.S. Tift, J.L. Meyer, D.E. Crocker, and R.N. Williams. 2013. Seasonal variations in plasma vitellogenin and sex steroids in male and female eastern box turtles, Terrapene c. carolina. General and Comparative Endocrinology. 180: 48-55.

 

Viscarra, J.A., R. Rodriguez, J.P. Vazquez-Medina, A. Lee, M.S. Tift, S.K. Tavoni, D.E. Crocker, and R.M. Ortiz. 2013. Insulin and GLP-1 infusions demonstrate the onset of adipose-specific insulin resistance in a large fasting mammal: potential glucogenic role for GLP-1. Physiological Reports. 1(2): 1-14.

 

Houser, D.S., D.E. Crocker, M.S. Tift and C.D. Champagne. 2012. Glucose oxidation and non-oxidative glucose disposal during prolonged fasts of the northern elephant seal pup (Mirounga angustirostris). American Journal of Physiology: Regulatory, Integrative and Comparative Physiology. 303: 562-570.

 

Kelso, E.J., C.D. Champagne, M.S. Tift, D.S. Houser and D.E. Crocker. 2012. Sex differences in fuel use and metabolism during development in fasting juvenile northern elephant seals. Journal of Experimental Biology. 215: 2637-2645

 

Boaz, S.M., C.D. Champagne, M.A Fowler, D.S. Houser, and D.E. Crocker. 2012. Water-soluble vitamin homeostasis in fasting northern elephant seals (Mirounga angustirostris) measured by metabolomics analysis and standard methods. Journal of Comparative Biochemistry and Physiology A. 161:114-121.

 

Vazquez-Medina, J.P., T. Zenteno-Savin, M.S. Tift, H.J. Forman, D.E. Crocker, and R.M. Ortiz. 2011. Apnea stimulates the adaptive response to oxidative stress in elephant seal pups.  Journal of Experimental Biology. 214: 4193-4200.

 

Tift, M.S., D.S. Houser, D.E. Crocker. 2011. High-density lipoprotein remains elevated despite reductions in total cholesterol in fasting adult male elephant seals (Mirounga angustirostris). Journal of Comparative Biochemistry and Physiology B. 159:214-219.

Norris, A.L., D.S. Houser, D.E. Crocker. 2010. Environment and activity affect skin temperature in breeding adult male elephant seals (Mirounga angustirostris). Journal of Experimental Biology. 213: 4205-4212.

McDonald, B.I., D.E. Crocker, J.M Burns, and D.P. Costa. 2008. Body condition as an index of winter foraging success in crabeater seals (Lobodon carcinophaga). Deep Sea Research II. 55:515-522.

Zeno, R.L., D.E. Crocker, J.L. Hassrick, S.A. Allen, and D.P. Costa. 2008. Development of foraging behavior in juvenile northern elephant seals. Journal of Zoology. 274: 180-187.

Fowler, M.A., C.D. Champagne, D.S. Houser, and D.E. Crocker. 2008. Hormonal regulation of glucose clearance in lactating northern elephant seals (Mirounga angustirostris). Journal of Experimental Biology. 211:2943-2949.

Hassrick, J.L., D.E. Crocker, R.L. Zeno, S.B. Blackwell, D.P. Costa, and B.J. Le Boeuf. 2007. Swimming speed and foraging strategies of northern elephant seals. Deep Sea Research II. 54:369-383.

Houser, D.S., C.D. Champagne, and D.E. Crocker. 2007. Lipolysis and glycerol gluconeogenesis in simultaneously fasting and lactating northern elephant seals. American Journal of Physiology: Regulatory, Integrative and Comparative Physiology. 293:R2376-R2381.

Crocker, D.E., N. Kofahl, G.D. Fellers, N.B.Gates and D.S. Houser. 2007. High rates of energy expenditure and water flux in free ranging Pt. Reyes mountain beavers. Physiological and Biochemical Zoology. 80(6): 635-642.

Champagne, C.D., D.S. Houser, D.E. Crocker. 2006. Glucose metabolism during lactation in a fasting animal, the northern elephant seal. American Journal of Physiology: Regulatory, Integrative and Comparative Physiology. 291:R1129-R1137.

McDonald, B.I. and D.E. Crocker. 2006. Maternal physiology and behavior impact lactation efficiency in northern elephant seals. Physiological and Biochemical Zoology 79(3):484-496.

Tremblay, Y., S.A. Shaffer, S.L. Fowler, C.E. Kuhn, B.I. McDonald, M.J. Weise, C. Bost, H. Weimerskirch, D.E. Crocker, M.E. Goebel, and D.P. Costa. 2006. Interpolation of animal tracking data in a fluid environment. Journal of Experimental Biology. 209: 128-140.

Kuhn, C.E., B.I. McDonald, S.A. Shaffer, J. Barnes, D E. Crocker, J. Burns, D.P. Costa. 2006. Diving physiology and winter foraging behavior of a juvenile leopard seal (Hydrurga leptonyx). Polar Biology. 29(4):303-307.

Champagne, C.D., D.S. Houser and D.E. Crocker. 2005. Glucose production and substrate cycle activity in a fasting adapted animal, the northern elephant seal. Journal of Experimental Biology. 208:859-868.

Burns, J.M. D. P. Costa, M. A. Fedak, C. J. A. Bradshaw, M. A. Hindell, N. Gales, B.I. McDonald, S. J. Trumble, D. E. Crocker. 2004. Winter habitat use and foraging behavior of crabeater seals along the Western Antarctic Peninsula. Deep-Sea Research II 51:2279-2303.