Ana Jimenez

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Ana Jimenez

Associate Professor of Biology

Department/Office Information

130 Ho Science Center


BS in Marine Biology University of West Florida 2005

PhD in Marine Biology University of North Carolina Wilmington 2011

It's a dog's life (FSEM 127 or CORE 188)

​Global climate change and you (CORE 128)

Evolution, Ecology and Diversity (BIOL 181 + Lab)

Comparative Animal Physiology (BIOL 311 + Lab) 

Vertebrate Physiology (BIOL 318 + Lab)

Research Tutorial- Adaptations to environment (BIOL 482)

Associate professor, Department of Biology, Colgate University, 2021-present

Assistant professor, Department of Biology, Colgate University, 2015-2020

Post-doctoral researcher, Department of Biology, Loyola Marymount University and Hopkins Marine Station of Stanford University, 2014-15

Post-doctoral researcher, Department of Evolution, Ecology and Organismal Biology, The Ohio State University; 2011-14

Doctoral candidate, Department of Biology and Marine Biology, University of North Carolina Wilmington, 2005-11

Undergraduate research assistant, Department of Biology, University of West Florida 2002-05

Animal physiology, environmental physiology, organismal biology

Animals structure their physiology so that their metabolic rate changes according to their life-history and energetic demands. We seek to understand functional linkages between whole organism metabolic rate and underlying mechanisms that influence its magnitude, such as physiological compensations at the cellular level, including changes in muscle fibers and primary fibroblast cells. We have looked at evolutionary changes in metabolic rates in primary fibroblast cells from tropical and temperate birds, developmental changes in cellular metabolic rates of muscle fibers. Currently, our lab is asking questions related to aging and metabolic rates in dogs, and trade-offs between thermal environment and muscle plasticity in birds.

Jimenez, A.G., Paul, K., Zafar, A., and Ay, A. Effect of different masses, ages, and coats on the thermoregulation of dogs before and after exercise across different seasons Veterinary Research communications. 

​Jimenez, A.G., Calderaro, L., Clark, S., Elacqua, D., Hazen, E., Lam, V., and Leightheiser, G. 2022. Can dogs serve as stress mediators and decrease salivary cortisol levels in a population of liberal arts college students? EXPLORE.

​Swanson, D., Zhang, Y., and Jimenez, A.G. 2022. Skeletal muscle and metabolic flexibility in response to changing energy demands in wild birds. Frontiers in Physiology- Avian Physiology. 1475: 1-17.

​Wynkoop, M.R., Cooper-Mullin, C.M., and Jimenez, A.G. 2022. Plasma Lactate dehydrogenase (LDH) and Pyruvate Kinase (PK) activity changes with body mass and age across birds and mammals. Animal Biology. 1 72(4), 447-463.

​Jimenez, A.G., and Cooper-Mullin, C.M. 2022. Antioxidant capacity and lipid oxidative damage in muscle tissue of tropical birds. The Wilson Journal of Ornithology. 134(3): 531-541.

​Wynkoop, M.R., Lalwani, S., Cipolli, W., and Jimenez, A.G. 2022. Scaling with body mass and age in glycolytic enzymes of domestic dogs. Veterinary Research Communications. 47(1): 39-50.

​Baker, P., Cooper-Mullin, C.M., Jimenez, A.G. 2022. Differences in advanced glycation end-products (AGEs) in plasma from birds and mammals of different body sizes. Comparative Biochemistry and Physiology: Part A. 267: 1-7.

​Lin, Y., Patterson, A., Jimenez, A.G., and Elliott, K.H. 2022. Oxidative stress of reproductive carry-over effects in a long-lived seabird, the thick-billed murre. Physiological and Biochemical Zoology. 95(1): 35-53.

Jimenez, A.G., and Lencyk, E. 2021. Lack of variation in nuclear DNA content in avian muscle. Genome. 64(4): 219-227.

​De Jesus, A.D., and Jimenez, A.G. 2021. Effects of acute temperature increases on House Sparrow (Passer domesticus) pectoralis muscle myonuclear domain. Journal of Experimental Zoology-A. 337(2):150-158.

Jimenez, A.G., and De Jesus, A.D. 2021. Comparison of myonuclear domain in phylogenetically paired tropical and temperate bird species. Journal of Avian Biology. 52 (11): 1-10.

​Jimenez, A.G., and De Jesus, A.D. 2021. Do thermal acclimation and an acute heat challenge alter myonuclear domain of fast and control-growing quail? Journal of Thermal Biology. 100: 1-6.

​Brookes, P., and Jimenez, A.G. 2021. Metabolomics of aging in primary fibroblast from small and large breed dogs. GeroScience. 43(4): 1683-1696.

Jimenez, A.G., Downs, C.J., Lalwani, S., and Cipolli, W. 2021. Cellular metabolism during stimulated inflammation in small and large dog breeds’ primary fibroblasts cells as they age. Journal of Experimental Biology. 224(9):1-8.

​Vézina, F., O’Connor, R., De Jesus, A.D., Le Progam, A., Régimbald, L., Love, O., and Jimenez, A.G. 2021. Snow buntings preparing for migration increase muscle fiber size and myonuclear domain in parallel with a major gain in fat mass.  Journal of Avian Biology. 52(5): 1-10.

​Jimenez, A.G. 2021. The physiological conundrum that is the domestic dog. Integrative and Comparative Biology. 61(1): 140-153.

​Bryce, C., Davis, M., Gompper, M., Hurt, A., Koster, J., Larson, G., Ostrander, E., Udell, M., Urfer, S., Wirsing, A., and Jimenez, A.G. 2021. Biology’s best friend: Bridging disciplinary gaps to advance canine science.  Integrative and Comparative Biology. 61(1): 76-92.

Jimenez, A.G., and Lalwani, S., Cipolli, W. 2021. Effects of metformin, rapamycin, and resveratrol on cellular metabolism of canine primary fibroblast cells isolated from large and small breeds as they age. GeroScience. 1-14.

​Jimenez, A.G. 2021. Plasma concentration of Advanced Glycation End-products (AGEs) from wild canids and domestic dogs does not change with age or across body masses. Frontiers of Veterinary Science, section Animal Nutrition and Metabolism. 8:637132. 1-6.

Lalla, K.M., Whelan, S., Brown, K., Patterson, A., Jimenez, A.G., Hatch, S., and Elliott, K.H. 2020. Flight performance is associated with myonuclei density and fibre diameter in a wild bird. Journal of Experimental Biology. 223 (22): 1-7.

​Jimenez, A.G. 2020. Commentary: Structural plasticity of the avian pectoralis: a case for geometry and the forgotten organelle. Journal of Experimental Biology. 223 (23): 1-8.

Baker, P., Van Wie, I., Braun, E., and Jimenez, A.G. 2020. Thermal stability  vs. variability: insights in oxidative stress from a eurytolerant fish. Comparative Biochemistry and Physiology: Part A. 249: 1-9.

​Jimenez, A.G. and Downs, C.J. 2020. Untangling lifespan and body mass discrepancies in canids: Phylogenetic comparison of oxidative stress in blood from domestic dogs and wild canids. American Journal of physiology, Regulatory, Integrative and Comparative Physiology. 319 (2): R203-R210.

​Jimenez, A.G.,  Winward, J., Walsh, K. and Champagne, A. 2020. Effects of membrane fatty acid composition on cellular metabolism and oxidative stress in dermal fibroblasts from small and large breed dogs. Journal of Experimental Biology. 223 (12): 1-9.

​Jimenez, A.G., Cornelius Rhus, E., Tobin, K., Anderson, K., Le Program, A., Regimbald, L., and Vézina, F. 2020. Consequences of being phenotypically mismatched with the environment: no evidence of oxidative stress in cold and warm acclimated birds facing a cold spell. Journal of Experimental Biology. 223: 1-7.

Jimenez, A.G., Tobin, K., Anderson, K., McCann, M.K., and Briggs, C. 2020. Differences in oxidative stress during seasonal acclimation and ability to cope with environmental mismatch in muscle and brain of black-capped chickadees (Poecile atricapillus) and rock pigeons (Columba livia). Journal of Avian Biology. 51: 1-11.

​Vézina, F., Cornelius Rhus, E., O’Connor, E., Le Progam, A., Régimbald, L., Love, O., and Jimenez, A.G.  2020. Consequences of being phenotypically mismatched with the environment: rapid muscle ultrastructural changes in cold shocked black-capped chickadees (Poecile atricapillus). American Journal of physiology, Regulatory, Integrative and Comparative Physiology. 318: R274–R283.

​Beattie, U., Wright, H., and  Jimenez, A.G. 2019. Primary dermal fibroblasts and pectoralis muscle show similar patterns of oxidative stress in tropical and temperate birds despite differing life-histories. Journal of Avian Biology. 51 (1): 1-10.

​Jimenez, A.G., O’Connor, E., and Elliott, K.H. 2019. Muscle myonuclear domain, but not oxidative stress, decreases with age in a long-lived seabird with high activity costs. Journal of Experimental Biology. 222 (18): 1-9.

​Jimenez, A.G., O’Connor, E., Brown, K. and Briggs, C. 2019. Seasonal muscle ultrastructure plasticity and resistance of muscle structural changes during temperature increases in resident black-capped chickadees (Poecile atricapillus) and rock pigeons (Columba livia). Journal of Experimental Biology. 222 (12): 1-8.

​Beattie, U., and Jimenez, A.G. 2019. Oxidative stress does not differ in primary dermal fibroblasts isolated from fast-growing and control-growing quail.  Canadian Journal of Zoology. 97 (6): 530-536.

Brown, K., Jimenez, A.G.,  Whelan, S., Lalla, K, Hatch, S.A., and Elliott, K.H. 2019. Muscle fiber structure in an aging long-lived seabird, the black-legged kittiwake (Rissa tridactyla). Journal of Morphology. 280 (7): 1061-1070.

​Havird, J., Weaver, R., Milani, L., Ghiselli, F., Greenway, R., Ramsey, A.J., Jimenez, A.G., Dowling, D., Hood, W., Montooth, K., Estes, S., Shulte, P., Sokalova, I. and Hill, G.E. 2019. Beyond the powerhouse: integrating mitonuclear evolution, physiology, and theory in comparative biology. Integrative and Comparative Biology. 59 (4): 856-863.

Jimenez, A.G., O’Connor, E., Tobin, K., Anderson, K., Winward, J., Fleming, A., Winner, R., Chinchilli, E., Amy, M., Carlson, K., and Downs, C.J. 2019. Does cellular metabolism from primary fibroblasts and oxidative stress in blood differ between mammals and birds? The (lack-thereof) scaling of oxidative stress. Integrative and Comparative Biology. 59 (4):953-969.

​Dowd, W. and Jimenez, A.G. 2019. Plasticity of adductor muscle aerobic capacity, but not fiber size among adult mussels (Mytilus californianus) from different shore heights. Marine Biology. 166 (2): 22.

Jimenez, A.G., Braun, E., and Tobin, K. 2018. How does chronic temperature acclimation affect oxidative stress during hypoxia in white muscle of the sheepshead minnow? Fish Physiology and Biochemistry. 45 (2): 499-510.

​Winward, J.D, Ragan, C.M., and Jimenez, A.G. 2018. Cellular metabolic rates and oxidative stress profiles in primary fibroblast cells isolated from virgin females, reproductively experienced females, and male Sprague-Dawley rats. Physiological reports. 16: e13909.

​Jimenez, A.G. 2018. 'The same thing that makes you live can kill you in the end': exploring the effects of growth rates and longevity on cellular metabolic rates and oxidative stress in birds and mammals. Integrative and Comparative Biology. 58 (3): 544-558.

Jimenez, A.G., Dias, J., Nguyen, T., Reilly, B. and Anthony, N. 2018. Thermal acclimation of fast-growing quail exhibit decreased oxidative stress and increased muscle fiber diameters after acute heat challenges. Canadian Journal of Zoology. 96: 1097-1105.

​Hood, W.R., Austad, S.N., Bize, P., Jimenez, A.G., Montooth, K.L.,Schulte, P.M., Scott, G.R., Sokolova, I., Treberg, J.R., and Salin, K. 2018. The mitochondrial contribution to animal performance, adaptation, and life-history variation. Integrative and Comparative Biology. 58 (3): 480-485.

Jimenez, A.G., Winward, J., Beattie, U.K., and William Cipolli. 2018. Cellular metabolism and oxidative stress as a possible determinant for longevity in small breed and large breed dogs. PLoS ONE. 13 (4): e0195832.

​Jimenez, A.G.,  Winward, J., Smith, D.M. and Ragan, C.M. 2018. Effects of short- term clomipramine on anxiety-like behavior, cellular metabolism, and oxidative stress in primary fibroblast cells of male and female rats. Physiological Reports. 6 (9), e13615,

For more publications, please visit my website.