Biography
Dr David Rosen is a Research Associate with the Marine Mammal Research Unit.
He coordinates the Consortium's captive Steller sea lion research program. His
own research interests focus primarily on pinniped bioenergetics.
His main research interest lies in understanding how animals
have evolved to function - as individual units - within a variable
and (to our eyes) hostile environment. His main scientific
paradigm is that an animal's physiology reflects the interaction
between the demands of the environment and the necessities
of its life history. A major focus of his current research
is the energetic and nutritional consequences for Steller sea
lions of changing their behaviour and diet.
PUBLICATIONS
Fahlman, A., Svärd, C., Rosen, D.A.S., Jones, D.R. and Trites, A.W. (in press). Metabolic costs of foraging and the management of O2 stores in Steller sea lions. Journal of Experimental Biology
Jeanniard du Dot, T., Rosen, D. A. S. , Trites, A. W. (in press). Steller sea lions show diet-dependent changes in body composition during nutritional stress and recover more easily from mass loss in winter than in summer. Journal of Experimental Marine Biology and Ecology
Fahlman, A., G.D. Hastie, D.A.S. Rosen, Y. Naito and A.W. Trites. 2008. Buoyancy does not affect diving metabolism during shallow dives in Steller sea lions Eumetopias jubatus. Aquatic Biology 3:147-154.
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Fahlman, A., R. Wilson, C. Svärd, D.A.S. Rosen and A.W. Trites. 2008. Activity and diving metabolism correlate in Steller sea lion Eumetopias jubatus. Aquatic Biology 2:75-84.
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Rosen, D.A.S., Kumagai, S. 2008. Hormone changes indicate that winter is a critical period for food shortages in Steller sea lions. Journal of Comparative Physiology B 178:573-583.
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Rosen, D.A.S. and A.W. Trites. 2008. Marine Mammals in the Lab: Tools for Conservation and Science. In North Pacific Universities Marine Mammal Research Consortium. Vancouver, BC. pp. 15 pages
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Hastie, G.D., D.A.S. Rosen and A.W. Trites. 2007. Reductions in oxygen consumption during dives and estimated submergence limitations of Steller sea lions (Eumetopias jubatus). Marine Mammal Science 23:272-286.
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Rea, L.D., D.A.S. Rosen and A.W Trites. 2007. Utilization of stored energy reserves during fasting varies by age and season in Steller sea lions. Canadian Journal of Zoology 85:190-200.
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Rosen, D.A.S., A.J. Winship, and L.A. Hoopes. 2007. Thermal and digestive constraints to foraging behavior in marine mammals. Philosophical Transactions, Royal Society of London B 362:2151-2168.
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Hastie, G, D.A.S. Rosen, and A.W. Trites. 2006. Studying trained Steller sea lions in the open ocean. In Sea Lions of the World. A.W. Trites, S. Atkinson, D.P. DeMaster, L.W. Fritz, T.S. Gelatt, L.D. Rea and K. Wynne (eds). pp. 193-204. Alaska Sea Grant College Program, University of Alaska, Fairbanks.
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Hastie, G.D, D.A.S. Rosen, A.W. Trites. 2006. The influence of depth on a breath-hold diver: predicting the diving metabolism of Steller sea lions (Eumetopias jubatus). Journal of Experimental Marine Biology and Ecology 336:163-170.
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Kumagai, S., D.A.S Rosen and A.W. Trites. 2006. Body mass and composition responses to short-term low energy intake are seasonally dependent in Steller sea lions (Eumetopias jubatus). Comparative Biochemistry and Physiology 179:589-598.
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Richmond, J. P., T. Jeanniard du Dot, D. A. S. Rosen and S. A. Zinn. 2006. Effects of prey composition on the endocrine response to nutrient restriction and re-alimination in Steller sea lions (Eumetopias jubatus). Symposia of the Comparative Nutrition Society 63:136-141.
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Rosen, D.A., D.J. Tollit, A.J. Winship, and A.W. Trites. 2006. Potential effects of short-term prey changes on sea lion physiology. In Sea Lions of the World. A.W. Trites, S. Atkinson, D.P. DeMaster, L.W. Fritz, T.S. Gelatt, L.D. Rea and K. Wynne (eds). pp. 103-116. Alaska Sea Grant College Program, University of Alaska, Fairbanks.
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Rosen, D. A. S., A. J. Winship and L. A. Hoopes. 2006. Interacting physiological constraints to foraging behavior in marine mammals. Symposia of the Comparative Nutrition Society 63:151-156.
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Tollit, D.J., S.G. Heaslip, B.E. Deagle, S.J. Iverson, R. Joy, D.A.S. Rosen and A.W. Trites. 2006. Estimating diet composition in sea lions: which technique to choose? In Sea Lions of the World. A.W. Trites, S. Atkinson, D.P. DeMaster, L.W. Fritz, T.S. Gelatt, L.D. Rea and K. Wynne (eds). pp. 293-307. Alaska Sea Grant College Program, University of Alaska, Fairbanks.
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Trites, A.W., B.P. Porter, V.B. Deecke, A.P. Coombs, M.L. Marcotte and D.A.S. Rosen. 2006. Insights into the Timing of Weaning and the Attendance Patterns of Lactating Steller Sea Lions (Eumetopias jubatus) in Alaska During Winter, Spring and Summer. Aquatic Mammals 32:85-97.
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Winship, A.J., A.M.J. Hunter, D.A.S. Rosen, and A.W. Trites. 2006. Food consumption by sea lions: existing data and techniques. In Sea Lions of the World. A.W. Trites, S. Atkinson, D.P. DeMaster, L.W. Fritz, T.S. Gelatt, L.D. Rea and K. Wynne (eds). pp. 177-191. Alaska Sea Grant College Program, University of Alaska, Fairbanks.
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Rosen, D.A.S. and A.W. Trites. 2005. Examining the potential for nutritional stress in young Steller sea lions: physiological effects of prey composition. Journal of Comparative Physiology 175:265-273.
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Willis, K., M. Horning, D.A.S. Rosen and A.W. Trites. 2005. Spatial variation of heat flux in Steller sea lions: evidence for consistent avenues of heat exchange along the body trunk. Journal of Experimental Marine Biology and Ecology 315:163-175.
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Hoopes, L.A., L.D. Rea, D.A.S. Rosen and G.A.J. Worthy. 2004. Effects of body condition on resting metabolism in captive and free-ranging Steller sea lions (Eumetopias jubatus). Symposia of the Comparative Nutrition Society 2004 5:79-82.
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Rosen, D.A.S., Hastie, G.D., Trites, A.W. 2004. Searching for stress: Hematological indicators of nutritional inadequacies in Steller sea lions. Symposia of the Comparative Nutrition Society 2004 5:145-149.
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Rosen, D.A.S. and Trites, A.W. 2004. Satiation and compensation for short-term changes in food quality and availability in young Steller sea lions (Eumetopias jubatus). Canadian Journal of Zoology pp. 1061-1069.
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Rosen, D.A.S., G.D. Hastie and A.W. Trites. 2004. Searching for stress:Hematological indicators of nutritional inadequacies in Steller sea lions. Symposia of the Comparative Nutrition Society 2004 5:145-149.
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McPhee, J.M., D.A.S. Rosen, R.D. Andrews and A.W. Trites. 2003. Predicting metabolic rate from heart rate for juvenile Steller sea lions Eumetopias jubatus. Journal of Experimental Biology 206:1941-1951.
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Rosen, D.A.S. and A.W. Trites. 2003. No evidence for bioenergetic interaction between digestion and thermoregulation in Steller sea lions, Eumetopias jubatus. Physiological and Biochemical Zoology 76(6):899-906.
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Tollit, D.J., M. Wong, A.J. Winship, D.A.S. Rosen and A.W. Trites. 2003. Quantifying errors associated with using prey skeletal structures from fecal samples to determine the diet of the Steller sea lion (Eumetopias jubatus). Marine Mammal Science pp. 724-744.
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Rosen, D.A.S. and A.W. Trites. 2002. Cost of transport in Steller sea lions, Eumetopias jubatus. Marine Mammal Science 18:513-524.
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Rosen, D.A.S. and A.W. Trites. 2002. Changes in metabolism in response to fasting and food restriction in the Steller sea lion (Eumetopias jubatus). Comparative Biochemistry and Physiology. 132:389-399.
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Rosen, D.A.S. and A.W. Trites. 2002. What is it about food? Examining possible mechanisms with captive Steller sea lions. In Steller sea lion decline: Is it food II. D. DeMaster and S. Atkinson (eds). pp. 45-48. University of Alaska Sea Grant, AK-SG-02-02, Fairbanks.
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Winship, A.J., A.W. Trites and D.A.S. Rosen. 2002. A bioenergetic model for estimating the food requirements of Steller sea lions (Eumetopias jubatus) in Alaska. Marine Ecology Progress Series 229:291-312.
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Rea, L.D., D.A. S. Rosen and A.W. Trites. 2000. Metabolic response to fasting in 6-week-old Steller sea lion pups (Eumetopias jubatus). Can. J. Zool. 78:890-894.
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Rea, L.D., D.A.S. Rosen and A.W. Trites. 2000. Metabolic response to fasting in 6-week-old Steller sea lion pups (Eumetopias jubatus). Canadian Journal of Zoology 78:890-894.
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Rosen, D.A.S. and A.W. Trites. 2000. Assessing the role of nutritional stress in the decline of wild populations: a Steller case of scientific sleuthing. In C.L.K. Baer (ed.), Proceedings of the Third Comparative Nutrition Society Symposium. Pacific Grove, California, August 4-9, 2000. 3:182-186.
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Rosen, D.A.S. and A.W. Trites. 2000. Digestive efficiency and dry-matter digestibility of Steller sea lions fed herring, pollock, salmon and squid. Canadian Journal of Zoology 78:234-239.
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Rosen, D.A.S. and A.W. Trites. 2000. Pollock and the decline of Steller sea lions: testing the junk-food hypothesis. Canadian Journal of Zoology 78:1243-1258.
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Rosen, D.A.S., L. Williams and A.W. Trites. 2000. Effect of ration size and meal frequency on assimilation and digestive efficiency in yearling Steller sea lions, Eumetopias jubatus. Aquatic Mammals 26:76-82.
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Rea, L.D., D.A.S. Rosen and A.W. Trites. 1999. Seasonal differences in adaptation to prolonged fasting in juvenile Steller sea lions (Eumetopias jubatus). In The FASEB Journal (Federation of American Societies of Experimental Biology). Washington, D.C., April 17-21, 1999. Vol 13(5) pp. A740
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Rosen, D.A.S. and A.W. Trites. 1999. Metabolic effects of low-energy diet on Steller sea lions, Eumetopias jubatus. Physiological Zoology 72:723-731.
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Rea, Lorrie D., David A.S. Rosen and Andrew W. Trites. 1998. Blood Chemistry and Body Mass Changes During Fasting in Juvenile Steller sea lions (Eumetopias jubatus). In Proceedings of the Comparative Nutrition Society, Number 2. pp. 174-178.
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Rosen, D.A.S. and A.W. Trites. 1998. Changes in metabolism in response to varying energy intake in a marine mammal, the Steller sea lion. In Proceedings of the Comparative Nutrition Society, Number 2. pp. 182-187.
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Rosen, D.A.S. and A.W. Trites. 1997. Heat Increment of Feeding in Steller sea lions, Eumetopias jubatus. Comparative Biochemistry and Physiology 118A:877-881.
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PDF of Rosen publication list |