Charles T Robbins
Affiliation: Washington State University
- The impact of protein quality on stable nitrogen isotope ratio discrimination and assimilated diet estimationCharles T Robbins
Department of Natural Resource Sciences and School of Biological Sciences, Washington State University, Pullman, WA 99164 4236, USA
Oecologia 162:571-9. 2010..We conclude that using isotopes to estimate assimilated diets is more complex than often appreciated and will require developing more biologically based, time-sensitive models...
- Cardiac function adaptations in hibernating grizzly bears (Ursus arctos horribilis)O Lynne Nelson
Department of Veterinary Clinical Sciences, Washington State University, 100 Grimes Way, Room 17, Pullman, WA 99164, USA
J Comp Physiol B 180:465-73. 2010..These findings will aid in rational approaches to identifying underlying molecular mechanisms...
- Temporal organization of activity in the brown bear (Ursus arctos): roles of circadian rhythms, light, and food entrainmentJasmine V Ware
Departments of Veterinary Comparative Anatomy, Pharmacology, and Physiology, Washington State Univ, Pullman, WA 99164, USA
Am J Physiol Regul Integr Comp Physiol 303:R890-902. 2012..Activity shifted entirely to a nocturnal pattern. Thus daily activity in brown bears is highly modifiable by photoperiod and food availability in a stereotypic seasonal fashion...
- Skeletal muscles of hibernating brown bears are unusually resistant to effects of denervationDavid C Lin
Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, WA 99164, USA
J Exp Biol 215:2081-7. 2012..Thus, hibernating bears alter skeletal muscle catabolic pathways regulated by neural activity, and exploration of these pathways may offer potential solutions for disuse atrophy of muscles...
- Split parturition observed in a captive North American brown bear (Ursus arctos)Jasmine V Ware
Deparmentt of Veterinary and Comparative Anatomy, Pharmacology and Physiology VCAPP, Washington State University, Pullman, Washington, USA
Zoo Biol 31:255-9. 2012..When normalized to age, cub growth rates did not differ. To our knowledge, this is the first documented case of markedly different birth dates in a single litter of brown bear cubs...
- The effect of dietary protein quality on nitrogen isotope discrimination in mammals and birdsCharles T Robbins
Department of Natural Resource Sciences and School of Biological Sciences, Washington State University, Pullman, WA 99164-4236, USA
Oecologia 144:534-40. 2005..We caution about the care needed in developing studies to understand variation in discrimination and subsequently applying those discrimination factors to estimate assimilated diets of wild animals...
- Titin isoform switching is a major cardiac adaptive response in hibernating grizzly bearsO Lynne Nelson
College of Veterinary Medicine, Washington State Univ, Pullman, WA 99164, USA
Am J Physiol Heart Circ Physiol 295:H366-71. 2008..Thus our work identified changes in the alternative splicing of cardiac titin as a major adaptive response in hibernating grizzly bears...
- Energy homeostasis regulatory peptides in hibernating grizzly bearsJanos Gardi
First Department of Internal Medicine, University of Szeged, Koranyi fasor 8 10, H 6720 Szeged, Hungary
Gen Comp Endocrinol 172:181-3. 2011..Our results suggest that ghrelin plays a potential role in the regulation of metabolic changes and energy homeostasis during hibernation in grizzly bears...
- Contrafreeloading in grizzly bears: implications for captive foraging enrichmentRagen T S McGowan
Center for the Study of Animal Well being, Department of Animal Sciences, Washington State University, Pullman, Washington, USA
Zoo Biol 29:484-502. 2010..Our findings support the provision of contrafreeloading opportunities as a foraging enrichment strategy for captive wildlife...
- Minimal seasonal alterations in the skeletal muscle of captive brown bearsJohn D Hershey
Department of Veterinary Comparative Anatomy, Pharmacology and Physiology, Washington State University, Pullman, Washington 99164, USA
Physiol Biochem Zool 81:138-47. 2008..These results agreed with a study that showed minimal skeletal muscle atrophy between seasons in wild black bears...
- Comparison of echocardiography-guided and fluoroscopy-guided endomyocardial biopsy techniquesO Lynne Nelson
Department of Veterinary Clinical Sciences, Washington State University, Pullman, WA 99164 7060, USA
Vet Radiol Ultrasound 46:131-4. 2005..Clear definition of endocardial surface as afforded by echocardiography may enhance tissue sample quality and lower potential complications from this procedure...
- Sexual dimorphism, reproductive strategy, and human activities determine resource use by brown bearsKaryn D Rode
Washington State University, School of Biological Sciences, Pullman, Washington 99164 4236, USA
Ecology 87:2636-46. 2006..In these cases, the nutritional demands of large adult males, balanced with responses to human activity, drive dynamic temporal and spatial distributions of individuals in the population...
- Evaluation of cardiac function in active and hibernating grizzly bearsO Lynne Nelson
Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Washington State University, Pullman, WA 99164, USA
J Am Vet Med Assoc 223:1170-5. 2003..Understanding mechanisms and responses of the myocardium during hibernation could yield insight into mechanisms of cardiac function regulation in various disease states in nonhibernating species...
- Dietary protein content alters energy expenditure and composition of the mass gain in grizzly bears (Ursus arctos horribilis)Laura A Felicetti
School of Biological Sciences, Washington State University, Pullman, WA, 99164 4236, USA
Physiol Biochem Zool 76:256-61. 2003....