Publications

Book

  1. Karasov, W.H. and C. Martinez del Rio (2007).  Physiological Ecology: How Animals Process Energy, Nutrients, and Toxins. Princeton University Press, Princeton.
    http://press.princeton.edu/titles/8590.html

Book Chapters

  1. Karasov, W.H. (2012)  Terrestrial vertebrates. Ch. 18 in Metabolic Ecology, R.M. Sibly, J.H. Brown, and A. Kodric-Brown, Wiley-Blackwell.
  2. Karasov, W. H. and S. R. McWilliams. (2005) Digestive constraints in mammalian and avian ecology. Chapter 4, pp 87 – 112 in J. M. Starck and T. Wang, eds. Physiological and Ecological Adaptations to Feeding In Vertebrates, Science Publishers, Inc., Enfield, New Hampshire.
  3. McWilliams, S. R. and W. H. Karasov. (2005) Migration takes guts: digestive physiology of migratory birds and its ecological significance.  Ch. 6, pp 67-78 in P. Mara and R. Greenberg, eds. Birds of Two Worlds. Smithsonian Institution Press, Washington, D.C.
  4. Karasov, W.H. and J. Wright (2002)  Nestling digestive physiology and begging.  Pp. 199-219 in Wright, J. and M. Leonard, The Evolution of Begging: Competition, Cooperation, and Communication.  Kluwer Academic Publishers, Dordrecht, The Netherlands.
  5. Jakubas, W.J., C.G. Guglielmo, and W.H. Karasov (1997). Dilution and detoxication costs: relevance to avian herbivore food selection.  Pp. 53-70 in Mason, J.R., ed. Repellants in Wildlife Management.  Colorado State University Press, Fort Collins, CO.
  6. Vispo, C., and W. H. Karasov (1997) The interaction of avian gut microbes and their host:  An elusive symbiosis.  Ch. 5 in Gastrointestinal Microbiology, edited by R. I. Mackie and B.A. White, pp. 116-155, Chapman & Hall, New York.
  7. Karasov, W. H., and I. D. Hume (1997) The vertebrate gastrointestinal system.  Pp. 407-480 in Handbook of Physiology, Section 13: Comparative Physiology, Vol. 1, edited by W. H. Dantzler, Oxford University Press, New York.
  8. Karasov, W. H. (1996) Digestive plasticity in avian energetics and feeding ecology.  Pp. 61-84 In:  Avian Energetics and Nutritional Ecology, edited by C. Carey, Chapman & Hall, Inc., New York.
  9. Martinez del Rio, C., S. J. Cork, and W. H. Karasov (1994) Modeling gut function:  An introduction.  Pp. 25-53 In:  The Digestive System in Mammals:  Food, Form and Function, edited by D. J. Chivers and P. Langer, Cambridge University Press.
  10. Meyer, M. W., and W. H. Karasov (1991) Chemical aspects of herbivory in desert and semi-desert habitats.  In:  Plant Chemical Defenses Against Mammalian Herbivory, ed. Palo, R. T. and C. T. Robbins, CRC Press, Inc., Boca Raton, Florida.
  11. Karasov, W. H. (1990) Digestion in birds:  Chemical and physiological determinants and ecological implications.  Pp. 391-415 in M. L. Morrison, C. J. Ralph, J. Verner, and J. R. Jehl, eds.  Avian Foraging:  Theory, Methodology, and Applications.  Studies in Avian Biology No. 13, Cooper Ornithological Society, Kansas.
  12. Karasov, W. H. (1989) Adaptation of nutrient transport during vertebrate evolution.  Pp. 157-168 in Adaptation and Development of Gastro-intestinal Function, edited by M. W. Smith and F. V. Sepulveda.  Manchester University Press, Manchester.
  13. Karasov, W. H. (1988) The nutritional significance of regulation of intestinal nutrient transport.  Pp. 51-63 in Nutritional Modulation of Neural Function, edited by John E. Morley, John H. Walsh and M. Barry Sterman.  Academic Press, New York.
  14. Karasov, W. H. (1988) Nutrient transport across vertebrate intestine.  Pp. 131-172 in Advances in Environmental and Comparative Physiology, Vol. 2, edited by R. Gilles.  Springer-Verlag.
  15. Karasov, W. H., and J. M. Diamond (1987) Adaptation of Intestinal Nutrient Transport.  In Physiology of the Gastrointestinal Tract, edited by L. R. Johnson, Vol. II, pp. 1489-1497, Raven Press, New York.
  16. Karasov, W. H. (1987) Nutrient requirements and the design and function of guts in fish, reptiles, and mammals.  Pp. 181-191 in Comparative Physiology:  Life in Water and on Land, edited by P. Dejours, L. Bolis, C. R. Taylor, E. R. Weibel.  Fidia Research Series, IX-Liviana Press, Padova.
  17. Karasov, W. H., R. K. Buddington, and J. M. Diamond (1985) Adaptation of intestinal sugar and amino acid transport in vertebrate evolution.  In Transport processes, iono‑, and osmoregulation, edited by R. Gilles and M. G. Gilles‑Baillien, pp. 227‑239, Springer Verlag, Berlin.

 Journals

Links are provided to copies of most publications.  If you are interested in an article that is not linked, please contact us.

  1. Cary, T.L., M.E. Ortiz-Santaliestra, and W.H. Karasov. (2014) Immunomodulation in post-metamorphic northern leopard frogs, Lithobates pipiens, following larval exposure to polybrominated diphenyl ether. Environmental Science & Technology (in press/available online).
  2. Killpack, T.L., D.N. Tie, and W.H. Karasov (2014)  Compensatory growth in nestling Zebra Finches impacts body composition but not adaptive immune function.  The Auk (in press).
  3. Kohl, K.D., T.L. Cary, W.H. Karasov, and M.D. Dearing (2013) Restructuring of the amphibian gut microbiota through metamorphosis. Environmental Microbiology and Environmental Microbiology Reports 5(6) 899-903.
  4. Price, E.R., L.J. Ruff, A. Guerra, and W.H. Karasov (2013) Cold exposure increases paracellular permeability to nutrients in the mouse. Journal  Experimental Biology 216:4065-4070.
  5. Brzek, P., K.D. Kohl, E. Caviedes-Vidal, and W.H. Karasov (2013) Activity of intestinal carbohydrases responds to multiple dietary signals in nestling House sparrows. Journal of Experimental Biology 216:3981-3987.
  6. Samuni-Blank, M., I. Izhaki, M.D. Dearing, W.H. Karasov, Y. Gercham, K.D. Kohl, P. Lymberakis, P. Kurnath, and Z. Arad (2013) Physiological and behavioral effects of frut toxins on seed-predating versus seed-dispersing congeneric rodents. Journal of Experimental Biology 216:3667-3673.
  7. Killpack, T.L., Y. Oguchi, and W.H. Karasov (2013) Ontogenetic patterns of constituitive innate immune parameters in altricial house sparrow nestlings. Journal of Avian Biology 44:513-520 [Editor’s Choice].
  8. Ortiz-Santaliestra, M.E., T.A.G. Rittenhouse, T.L. Cary, and W.H. Karasov (2013).  Interspecific and post-metamorphic variation in susceptibility of three North American anurans to Batrachochytrium dendrobatidis.  Journal of Herpetology 47(2):286-292. 
  9. Cary, T.L. and W.H. Karasov (2013) Toxicokinetics of polybrominated diphenyl ethers across life stages in the northern leopard frog, Lithobates pipiens.  Environmental Toxicology and Chemistry 32(7):1631-1640.
  10. Meier, S.A., Fassbinder-Orth, C.A., and W.H. Karasov (2013).  Ontogenetic changes in innate immune function in captive and wild subspecies of prairie chickens (Tympanuchus cupido spp.). Journal of Wildlife Management 77(3):633-638.
  11. Samuni-Blank, M., Z. Arad, M.D. Dearing, Y. Gerchman, W.H. Karasov, and I. Izhaki. (2013) Friend or foe? Disparate plant-animal interactions in two congeneric rodents. Evolutionary Ecology DOI 10.1007/s10682-013-9655-x.
  12. Karasov, W.H. and A.E. Douglas (2013) Comparative Digestive Physiology. Comprehensive Physiology 3:741-783.
  13. Brzęk, P., E. Ciminari, K.D. Kohl, K. Lessner, E. Caviedes-Vidal, and W.H. Karasov (2013) Effect of age and diet composition on activity of pancreatic enzymes in birds. Journal of Comparative Physiology B 183:685-697 DOI 10.1007/s00360-012-0731-2.
  14. McWhorter, T.J., B. Pinshow, W.H. Karasov, and C.R. Tracy (2013). Paracellular absorption is relatively low in the herbivorous Egyptian Spiny-tailed Lizard, Uromastix aegyptia. PLoS ONE 8(4): e61869. doi:10.1371/journal.pone.0061869.
  15. Price, E.R., A. Brun, V. Fasulo, W.H. Karasov, and E. Caviedes-Vidal (2013)  Intestinal perfusion indicates high reliance on paracellular nutrient absorption in an insectivorous bat Tadarida brasiliensis. Comparative Biochemistry and Physiology, Part A 164: 351–355 (http://dx.doi.org/10.1016/j.cbpa.2012.11.005).
  16. Fasulo, Veronica, Z.Q. Zhang, E.R.Price, J.G. Chediack, W.H. Karasov, and E. Caviedes-Vidal (2013).  Paracellular absorption in laboratory mice: molecule size-dependent but low capacity. Comparative Biochemistry and Physiology, Part A 164:71–76.
  17. Killpack, T.L. and W.H. Karasov (2012) Ontogeny of adaptive antibody response to a model antigen in captive altricial Zebra finches. PLoS ONE 7(10) e47294.
  18. Fasulo, V., Z.Q. Zhang, J.G. Chediack, F.D. Cid, W.H. Karasov and E. Cavides-Vidal (2012) The capacity for paracellular absorption in the insectivorous bat Tadarida brasiliensis. Journal of Comparative Physiology B DOI 10.1007/s00360-012-0696-1.
  19. Samuni-Blank, M., I. Izhaki, M.D. Dearing, Y. Gerchman, B. Trablshy, A. Lotan, W.H. Karasov, Z. Arad (2012) Intraspecific directed deterrence by the mustard oil bomb in a desert plant. Current Biology 22:1-3.
  20. Killpack, T.L. and W.H. Karasov (2012) Growth and development of house sparrows (Passer domesticus) in response to chronic food shortage throughout the nestling period.  Journal of Experimental Biology 215:1806-1815.
  21. Karasov, W.H., E. Caviedes-Vidal, B. Hartman Bakken, I. Izhaki, M. Samuni-Blank, and Z. Arad. (2012) Capacity for absorption of water-soluble secondary metabolites greater in birds than in rodents.  PLoS ONE 72(1) e32417.doi:10.1371/journal.pone.0032417.
  22. Van Schmidt, N.D., T.L. Cary, M.E. Ortiz-Santaliestra, and W.H. Karasov (2012) Effects of chronic polybrominated diphenyl ether (PBDE) exposure on gondal development in the northern leopard frog, Rana pipiens. Environmental Toxicology and Chemistry 31:347-354. DOI: 10.1002/etc.1702
  23. Liu, J.N and W.H. Karasov (2012) Metabolism during winter in a subtropical hibernating bat, the Formosan leaf-nosed bat (Hipposideros terasensis). Journal of Mammalogy 93:220-228; DOI: 10.1644/11-MAMM-A-144.1.
  24. Olivia E. LeDee, O.E., W.H. Karasov, K.J. Martin, M.W. Meyer, C.A. Ribic, and T.R. Van Deelen (2011)  Envisioning the future of wildlife in a changing climate: collaborative learning for adaptation planning. Wildlife Society Bulletin 35(4):508-513; DOI: 10.1002/wsb.62
  25. Karasov, W.H. (2011)  Digestive physiology: a view from molecules to ecosystem.  American Journal of Physiology 301:R276-R284.
  26. Brzek, P., K.D. Kohl, E. Caviedes-Vidal, and W.H. Karasov (2011)  Fully reversible phenotypic plasticity of digestive physiology in young House sparrows: lack of long-term effect of diet composition. Journal of Experimental Biology 214:2755-2760.
  27. Naya, D.E., and W.H. Karasov (2011) Food digestibility by microbes in wild ruminants: the effect of host species and dietary substrate. Rangelands 33(1):31-34.
  28. Kohl, K.D., P. Brzęk, E. Caviedes-Vidal, and W.H. Karasov (2011) Pancreatic and intestinal carbohydrases are matched to dietary starch level in wild passerine birds.  Physiological and Biochemical Zoology 84:195-203.
  29. Karasov, W.H., C. Martinez del Rio, and E. Caviedes-Vidal (2011) Ecological physiology of diet and digestive systems. Annual Review of Physiology 73:69–93.
  30. Liu, J.N. and W.H. Karasov (2011) Hibernation in warm hibernacula by free ranging Formosan Leaf-Nosed Bats, Hipposideros terasensis, in subtropical Taiwan. Journal of Comparative Physiology, B. Biochemical, Systematic, and Environmental 181:125-135 (DOI10.1007/s00360-010-0509-3).
  31. Martinez del Rio, C. & Karasov, W. H. (2010) Body Size and Temperature: Why They Matter. Nature Education Knowledge 1(10):10 (http://www.nature.com/scitable/knowledge/library/body-size-and-temperature-why-they-matter-15157011)
  32. Wright, J., W.H. Karasov, A.M.N. Kazem, I.B. Goncalves, and E. McSwan (2010) Begging and digestive responses to differences in long-term and short-term need in nestling pied flycatchers. Animal Behaviour 80:517-525.
  33. Brzęk,P., E.Caviedes-Vidal, K. Hoefer, and W.H. Karasov (2010) Effect of age and diet on total and passive glucose absorption in nestling House sparrows.  Physiological and Biochemical Zoology 83(3):501-511.
  34. Skopec, M.M., A.K. Green, and W.H. Karasov (2010) Flavonoids have differential effects on glucose absorption in rats (Rattus norvegicus) and American robins (Turdus migratorius).  Journal of Chemical Ecology 36:236-243.
  35. Brzęk, P., K.M. Lessner, E. Caviedes-Vidal, and W.H. Karasov (2010) Low plasticity in digestive physiology constrains feeding ecology in diet specialist, Zebra finch (Taeniopygia guttata). Journal of Experimental Biology 213(5):798-807.
  36. Tracy, C.R., T.J. McWhorter, M.S. Wojciechowski, B. Pinshow, and W.H. Karasov (2010)  Carbohydrate absorption by blackcap warblers (Sylvia atricapilla) changes during migratory refueling stopovers. Journal of Experimental Biology 213(3):380-385.
  37. Cary Coyle, T.L. and W.H. Karasov (2010) Chronic dietary polybrominated diphenyl ether (PBDE) exposure affects survival, growth and development of Rana pipiens tadpoles. Environmental Toxicology and Chemistry 29(1):133-141.
  38. McWhorter, T.J., A.K. Green, and W.H. Karasov (2010) Assessment of radiolabeled D-glucose and the non-metabolizable analog 3-O-methyl-D-glucose as tools for in vivo absorption studies.  Physiological and Biochemical Zoology 83(2): 376-384. DOI:10.1086/597524
  39. Fassbinder-Orth, C.A., E.K. Hofmeister, C.Weeks-Levy and W.H. Karasov (2009)  Oral and parenteral immunization of chickens (Gallus gallus) agains West Nile virus with recombinant envelope protein. Avian Diseases: Vol. 53, No. 4, pp. 502–509 (doi: 10.1637/8688-031009-Reg.1)
  40. Chen, T-H, J.A. Gross, and W.H. Karasov (2009) Chronic exposure to pentavalent arsenic of larval leopard frogs (Rana pipiens): Bioaccumulation and reduced swimming performance.  Ecotoxciology (DOI10.1007/s10646-009-0316-3).
  41. McWhorter,T.J., E. Caviedes-Vidal, and W.H. Karasov (2009) The integration of digestion and osmoregulation in the avian gut.  Biological Reviews 84(4):553-565 (doi:10.1111/j.1469-185X.2009.00086.x)
  42. Karasov,W.H. and H.V. Carey (2009) Metabolic teamwork between gut microbes and hosts. Microbe 4(7):323-328.
  43. Brzęk, P., K. Kohl, E. Caviedes-Vidal, and W.H. Karasov (2009) Developmental adjustments of House sparrow (Passer domesticus) nestlings to diet composition. Journal of Experimental Biology 212:1284-1293.
  44. Gilbert, J.H., P.A. Zollner, A.K. Green, J.L. Wright, and W.H. Karasov (2009).  Seasonal field metabolic rates of American martens in Wisconsin. American Midland Naturalist 169:330-337.
  45. Gross, J.A., P.T.J. Johnson, L.K. Prahl, and W.H. Karasov (2009) Critical period of sensitivity for effects of cadmium on frog growth and development. Environmental Toxicology and Chemistry 28(6):1227-1232. 
  46. Naya, D.E., W.H. Karasov, and F. Bozinovic (2008) Latitudinal trends in digestive flexibility: testing the climatic variability hypothesis with data on the intestinal length of rodents.  American Naturalist 172(4):E122-E134.
  47. Lavin, S.R., W.H. Karasov, A.R. Ives, K.M. Middleton, and T. Garland, Jr. (2008) Morphometrics of the avian small intestine, compared with non-flying mammals: A phylogenetic approach. Physiological and Biochemical Zoology 81(5):526-550.
  48. Lavin, S.R., and W.H. Karasov (2008) Allometry of Paracellular Absorption in Birds. Physiological and Biochemical Zoology 81(5):551–560.
  49. Lavin, S.R., W.H. Karasov, A.R. Ives, K.M. Middleton and T.Garland, Jr. (2008) Morphometrics of the Avian Small Intestine Compared with That of Nonflying Mammals: A Phylogenic Approach. Physiological and Biochemical Zoology 81(5):526–550.
  50. Lavin, S.R., T.J. McWhorter, and W.H. Karasov (2007) Mechanistic bases for differences in passive absorption. Journal of Experimental Biology 210:2754-2764.
  51. Karasov, W. H., K. P. Kenow, M. W. Meyer, and F. Fournier (2007) Bioenergetic and pharmacokinetic model for exposure of Common Loon chicks to methylmercury. Environmental Toxicology and Chemistry 26:677-685.
  52. McWhorter, T.J., B.H. Bakken, W.H. Karasov, and C. Martinez del Rio (2006) Hummingbirds rely on both paracellular and carrier-mediated intestinal glucose absorption to fuel high metabolism. Biology Letters (published first on-line: doi:10.1098/rsbl.2005.0388)
  53. Chediack, J.G., E. Caviedes-Vidal, and W.H. Karasov (2006) Electroaffinity in paracellular absorption of hydrophilic D-dipeptides by sparrow intestine. Journal of Comparative Physiology 176 (4): 303-309.
  54. Chen, T. H., J. A. Gross, and W. H. Karasov (2006) Sublethal effects of lead on northern leopard frog (Rana pipiens) tadpoles. Environmental Toxicology and Chemistry 25 (5): 1383-1389
  55. Fassbinder-Orth, C. and W. H. Karasov (2006) Effects of feed restriction and realimentation on digestive and immune function in the leghorn chick. Poultry Science 85:1449-1456
  56. Huang, Y. W., D. J. Hoffman, and W. H. Karasov (2006) Oxidative stress induced in PCB 126-exposed Northern leopard frogs, Rana pipiens. Journal of Toxicology and Environmental Health (in press)
  57. Green, A. K., S. L. Haley, D. M. Barnes, M. D. Dearing, and W. H. Karasov (2006) Is alpha-pinene a substrate for permeability-glycoprotein in woodrats? Journal of Chemical Ecology 32 (6): 1197-1211
  58. Karasov, W. H., 2005. Physiological mechanisms of resource use by migrating birds and their conservation implications. The Passenger Pigeon, Vol 67, No. 1.
  59. Karasov, W. H., and S. R. McWilliams. 2005. Digestive constraints in mammalian and avian ecology. Chapter 4, pp 87 – 112 in J. M. Starck and T. Wang, eds. Physiological and Ecological Adaptations to Feeding in Vertebrates, Science Publishers, Inc., Enfield, New Hampshire.
  60. McWilliams, S. R. and W. H. Karasov. 2005. Migration takes guts: digestive physiology of migratory birds and its ecological significance. Ch. 6, pp. 67-78 in P. Mara and R. Greenberg, eds. Birds of Two Worlds.
  61. Karasov, W. H., R. E. Jung, S. Vanden Langenberg, T. L. E. Bergeson. 2005. Field exposure of frog embryos and tadpoles along a pollution gradient in the fox river and Green Bay ecosystem in Wisconsin, USA. Environmental Toxicology and Chemistry, Vol. 24, No. 4, pp942-953.
  62. Green, A. K., D. M. Barnes, W. H. Karasov. 2005. A new method to measure intestinal activity of P-glycoprotein in avian and mammalian species. J. Comp. Physiol. B. 175:57-66.
  63. Skopec, M. M., A. E. Hagerman, and W. H. Karasov. 2004. Do salivary proline-rich proteins counteract dietary hydrolyzable tannin in laboratory rats? J Chemical ecology, Vol. 30, No. 9.
  64. Jung, R. E., W. H. Karasov, M. J. Melancon. 2004. Cytochrome P450 Activity in Green Frogs (Rana clamitans melanota) Exposed to Water and Sediments in the Fox River and Green Bay, Wisconsin, USA. Bull. Environ. Contam. Toxicol. 73:955-962.
  65. Green A. K., S. L. Haley, M. D. Dearing, D. M. Barnes, W. H. Karasov. 2004. Intestinal capacity of P-glycoprotein is higher in the juniper specialist, Neotoma stephensi, than the sympatric generalist, Neotoma albigula. Comparative Biochemistry & Physiology, Part A 139 pp. 325-333.
  66. Chang, M.H. and W.H. Karasov. 2004. Absorption and paracellular visualization of fluorescein, a hydrosoluble probe, in intact house sparrows (Passer domesticus). Zoology 107: 121-133
  67. Mangione, A.M., M.D. Dearing, and W.H. Karasov, 2004. Creosote Bush (Larrea triidentata) Resin Increases water demands and reduces energy availability in desert woodrats (Neotoma lepida). J. of Chemical Ecology. Vol. 30, No. 7.
  68. Chang, M. H. and W. H. Karasov. 2004. How the house sparrow Passer domesticus absorbs glucose. J Experimental Biology 207, 3109-3121.
  69. Chang, M. H., J. G. Chediack, E. Caviedes-Vidal, and W. H. Karasov. 2004. L-glucose absorption in house sparrows (Passer domesticus) is nonmediated. J comp Physiol B. 174: 181-188.
  70. Karasov, W. H., B. Pinshow, J.M. Starck, and D. Afik. 2004. Anatomical and Histological Changes in the Alimentary Tract of Migrating Blackcaps (Sylvia atricapilla): A comparison among Fed, Fasted, Food-Restricted, and Refed Birds. Physiological and Biochemical Zoology 77(1):149-160.
  71. Kenow, K. P., M. W. Meyer, F. Fournier, W. H. Karasov, A. Elfessi, and S. Gutreuter. 2003. Effects of subcutaneous transmitter implants on behavior, growth, energetics, and survival of Common Loon chicks. J. Field Ornithol. 74(2): 179-186.
  72. Chediack, J.G., E. Caviedes-Vidal, V. Fasulo, L.J. Yamin, and W. H. Karasov. 2003. Intestinal passive absorption of water-soluble compounds by sparrows: effect of molecular size and luminal nutrients. J. Comp. Physiol B 173: 187-197
  73. Karsov, W.H. and J. Wright. 2002. Nestling digestive physiology and begging. J. Wright and M. L. (eds.) The Evolution of Begging. pp.199-219.
  74. Fournier, F., W. H. Karasov, M. W. Meyer, and K. P. Kenow, (2002) Daily Energy Expenditures of Free-Ranging Common Loon (Gavia immer) Chicks. The Auk 119(4):1121-1126.
  75. Fournier, F., W.H. Karasov, P. Kenow, M. W. Meyer, and R. K. Hines. 2002.The oral bioavailability and toxicokinetics of methylmercury in common loon (Gavia immer) chicks. Comparative Biochemistry and Physiology Part A 133.
  76. McWilliams, S. R., R., Kearney, S. B. and W. H. Karasov, (2002) Diet preferences of warblers for specific fatty acids in relation to nutritional requirements and digestive capabilities. Journal of Avian Biology 33: 167-174.
  77. Lee, K. A., W.H. Karasov, E. Caviedes-Vidal. 2002. Digestive Response to Restricted Feeding in Migratory Yellow-Rumped Warblers. Physiological and Biochemical Zoology 75(3):314-323
  78. Dearing D. M., A. M. Mangione, and W. H. Karasov. (2002) Ingestion of plant secondary compounds causes diuresis in desert herbivores. Oecologia 130:576-584
  79. Caviedes-Vidal, E., W. H. Karasov. (2001) Developmental Changes in Digestive Physiology of Nestling House Sparrows, Passer domesticus. Physiological and Biochemical Zoology 74(5):769-782.
  80. McWilliams S. R., W. H. Karasov. (2001) Phenotypic flexibility in digestive system structure and function in migratory birds and its ecological significance. Comparative Biochemistry and Physiology Part A 128 579-593.
  81. Dykstra, C. R., W. H. Karasov, M. W. Meyer, and D. K. Warnke. (2001) Daily Energy Expenditure of Nestling Bald Eagles in Northern Wisconsin. The Condor 103:175-179.
  82. Ciminari, E.M, D. Afik, W.H. Karasov, and E. Caviedes-Vidal. (2001) Is Diet-shifiting Facilitated by Modulation of Pancreatic Enzymes? Test of an Adaptational Hypothesis in Yellow-rumped Warblers. The Auk 118(4):1101-1107.
  83. Huang, Y. W., J. J. Stegeman, B. R. Woodin, and W. H. Karasov (2001). Immunohistochemical localization of cytochrome P450-associated monooxygenases induced by 3,3′,4,4′,5-pentachlorobiphenyl in multiple organs of northern leopard frog, Rana pipiens. Environmental Toxicology and Chemistry Environmental Toxicology and Chemistry, Vol. 20, No. 1, pp 191-197.
  84. Chediack, J.G., E. Caviedes-Vidal, W.H. Karasov, and M. Pestchanker. (2001) Passive Absorption of Hydrophilic Carbohydrate Probes by the House Sparrow Passer Domesticus. Journal of Experimental Biology 204, 723-731.
  85. Dearing, M. D., A. M. Mangione, and W. H. Karasov. (2001) Plant Secondary Compounds as Diuretics: An Overlooked Consequence. Amer. Zool., 41:890-901
  86. Allran, J. W. and W. H. Karasov. (2001) Effects of Atrazine on Embryos, Larvae, and Adults of Anuran Amphibians. Env. Toxicology & Chemistry, Vol. 20, No. 4, pp. 769-775.
  87. Mangione, A. M., D. Dearing, and W. Karasov. (2001) Detoxification in Relation to Toxin Tolerance in Desert Woodrts EAting Creosote Bush. Journal of Chemical Ecology, Vol. 27, No. 12
  88. Caviedes-Vidal, E., D. Afik, C. Martinez del Rio, and W.H. Karasov (2000) Dietary modulation of intestinal enzymes of the house sparrow (Passer domesticus): testing an adaptive hypothesis. Comparative Biochemistry and Physiology 125:11-24.
  89. Dearing, M. D., A.M. Mangione, and W.H. Karasov (2000) Diet breadth of mammalian herbivores: tests of nutrient constraints and detoxification limitations hypotheses. Oecologia 123:397-405.
  90. Mangione, A.M., M.D. Dearing, and W.H. Karasov (2000) Interpopulation differences in tolerance to creosote bush resin in desert woodrats (Neotoma lepida). Ecology (in press).
  91. Karasov, W.H. and B. Pinshow (2000) Test for physiological limitation to nutrient assimilation in a long-distance migrant at a springtime stopover site. Physiological and Biochemical Zoology 73(3):335-343
  92. Karasov, W. H. and M. W. Meyer (2000) Testing the role of comtaminants in depressing avian numbers. Revista Chilena de Historia Natural 73:4461-471.
  93. Starck, M., W.H. Karasov, and D. Afik (2000) Intestinal nutrient uptake measurements and tissue damage Validating the everted sleeves method. Physiological and Biochemical Zoology 73(4):454-460.
  94. Allran, J. W. and W. H. Karasov. (2000) Effects of Atrazine and Nitrate on Northern Leopard Frog (RANA PIPIENS) Larvae Exposed in the Laboratory from Posthatch Through Metamorphosis. Env. Tox. & Chem. Vol. 19, No. 11, pp. 2850-2855.
  95. Lepczyk, C.A. and W.H. Karasov (2000). The effect of ephemeral food restrictions on the growth of house sparrows (Passer domesticus). Auk 117:164-174.
  96. Huang, Y.W. and W.H. Karasov (2000) Oral bioavailability and toxicokinetics of 3,3′,4,4′,5-pentachlorobiphenyl in northern leopard frogs, Rana pipiens. Environmental Toxicology and Chemistry Vol. 19. No.7 pp 1788-1794.
  97. Jofre, M. B., M. L. Rosenshield, and W. H. Karasov. (2000). Effects of PCB 126 and Ammonia, Alone and in Combination, on Green Frog (Rana clamitans) and Leopard Frog (R. pipiens) Hatching Success, Development, and Metamorphosis. Jour. Iowa Acad. Sci. 107(3):000-000.
  98. Karasov, W.H. (1999). Optimal digestive responses to changing diet and foraging costs. In: Adams, N. & Slotow, R. (Eds), Proc. 22 Int. Ornithol. Congr. Durban, University of Natal.
  99. Jofre, M.B. and W.H. Karasov (1999). The direct effect of ammonia on three species of North American anuran amphibians. Environmental Toxicology and Chemistry 18:1806-1812.
  100. Huang, Y.W., W.H. Karasov, K.P. Patnode, and C.R. Jefcoate (1999). Exposure of northern leopard frogs in the Green Bay ecosystem to polychlorinated biphenyls, polychlorinated dibenzo-p-dioxins, and polychlorinated dibenzofurans is measured by direct chemistry but not hepatic ethoxyresorufin-O-deethylase activity. Environmental Toxicology and Chemistry 18:2123-2130.
  101. Rosenshield, M.L., M.B. Jofre, and W.H. Karasov (1999). Effects of Polychlorinated Biphenyl 126 on green frog (Rana clamitans) and leopard frog (Rana pipiens) hatching success, development, and metamorphosis. Environmental Toxicology and Chemistry 18:2478-2486.
  102. McWilliams, S.R., E. Caviedes-Vidal, and W.H. Karasov (1999) Digestive adjustments in Cedar Waxwings to high feeding rate. Journal of Experimental Zoology 283:394-407.
  103. McWilliams, S.R. and W.H. Karasov (1998) Test of a digestion optimization model: effects of costs of feeding on digestive parameters. Physiological Zoology 71:168-178
  104. Lepczyk, C. M., Caviedes-Vidal, E., and Karasov, W. H. (1998) Digestive responses during food restriction and realimentation in nestling house sparrows (Passer domesticus). Physiological. Zoology 71:561-573.
  105. Karasov, W. H. and R. A. Anderson (1998) Correlates of variation in average daily metabolism of field-active zebra-tailed lizards (Callisaurus draconoides). Physiological Zoology 71:93-105.
  106. Dykstra, C. R., M. W. Meyer, D. K. Warnke, W. H. Karasov, D. E. Anderson, W. W. Bowerman, IV, and J. P. Giesy (1998). Low reproductive rates of Lake Superior Bald Eagles: low food delivery rates or environmental contaminants? Journal of Great Lakes Research 24:32-44.
  107. Woodford, J.E., W.H. Karasov, M.W. Meyer and L. Chambers (1998) Impact of 2,3,7,8-TCDD exposure on survival, growth, and behavior of ospreys breeding in Wisconsin, USA. Environmental Toxicology and Chemistry 17:1323-1331.
  108. Huang, Y.W., M.J. Melancon, R.E. Jung, and W.H. Karasov (1998) Induction of cytochrome P450-associated monooxygenases in northern leopard frogs, Rana pipiens, by 3,3’4,4′,5-pentachlorobiphenyl (PCB 126). Environmental Toxicology and Chemistry 17:1564-1569.
  109. Karasov, W.H. and B. Pinshow (1998) Changes in lean mass and in organs of nutrient assimilation in a long-distance migrant at a springtime stopover site. Physiological Zoology 71(4):435-448.
  110. McWilliams, S. R. and W. H. Karasov (1998) Do variable-reward feeding schedules affect digestive performance of migratory birds? Oecologia 114:160-169.
  111. Dearing, M.D., A.M. Mangione, W.H. Karasov, S. Morzunov, E. Otteson, and S.St. Jeor. (1998) Prevalence of Hanta virus in four species of Neotoma from Arizona and Utah. Journal of Mammalogy 79:1254-1259.
  112. Dykstra, C. R., M. W. Meyer, and W. H. Karasov (1997). Validation of the doubly-labeled-water method in bald eagles and a comparison of two equations for the calculation of energy expenditure. Physiological Zoology 70:19-26.
  113. Jakubas, W.J., C.G. Guglielmo, and W.H. Karasov (1997). Dilution and detoxication costs: relevance to avian herbivore food selection. Pp. 53-70 in Mason, J.R., ed. Repellants in Wildlife Management. Fort Collins, CO: NWRC.
  114. Vispo, C., and W. H. Karasov (1997) The interaction of avian gut microbes and their host: An elusive symbiosis. Ch. 5 in Gastrointestinal Microbiology, edited by R. I. Mackie and B.A. White, pp. 116-155, Chapman & Hall, New York.
  115. Karasov, W. H., and I. D. Hume (1997) The vertebrate gastrointestinal system. Pp. 407-480 in Handbook of Physiology, Section 13: Comparative Physiology, Vol. 1, edited by W. H. Dantzler, Oxford University Press, New York.
  116. Afik, D., B. W. Darken, and W. H. Karasov (1997) Is diet-shifting facilitated by modulation of intestinal nutrient uptake? Test of an adaptational hypothesis in yellow-rumped warblers. Physiological Zoology 70:213-221.
  117. Afik, D., S. R. McWilliams, and W. H. Karasov (1997) Test for passive absorption of glucose in yellow-rumped warblers, and its ecological implications. Physiological Zoology 70:370-377.
  118. Weiser, J. I., A. Porth, D. Mertens, and W. H. Karasov (1997) Digestion of chitin by Northern Bobwhites (Colinus virginianus) and American Robins (Turdus migratorius). The Condor 99:553-556.
  119. Karasov, W. H., and S. J. Cork (1996) Test of a reactor-based digestion optimization model for nectar-eating Rainbow Lorikeets. Physiological Zoology 69:117-138.
  120. Karasov, W. H., D. Afik, and B. W. Darken (1996) Do Northern Bobwhite quail modulate intestinal nutrient absorption in response to dietary change? A test of an adaptational hypothesis. Comparative Biochemistry and Physiology:113A:233-238.
  121. Caviedes-Vidal, E., and W. H. Karasov (1996). Glucose and amino acid absorption in House Sparrow intestine and its dietary modulation. American Journal of Physiology 271:R561-R568.
  122. Karasov, W. H. (1996). Digestive Plasticity in Avian Energetics and Feeding Ecology. Avian Energetics and Nutritional Ecology. chapman and Hall, New York.
  123. Larson J. M., et al. (1996). Reproductive success, Developmental Anomalies, and Envrionmental Contaminants in Double-Crested Cormorants (Phalacrocorax Auritus). Environmental Toxicology and Chemistry, Vol. 15 No. 4.pp. 553-559.
  124. Covell, D. F., D. S. Miller, and W. H. Karasov. (1996) Cost of locomotion and daily energy expenditure by free-living swift foxes (Vulpes velox): a seasonal comparison. Can. J. Zool. 74:283-290.
  125. Gugliemo, C. G., W. H. Karasov, and W. J. Jakubas. (1996) Nutritional Costs of a Plant Secondary Metabolite Explain Selective Foraging by Ruffed Grouse. Ecology, 77(4)
  126. Guglielmo, C. G., and W. H. Karasov (1995) Nutritional quality of winter browse for Ruffed Grouse. Journal of Wildlife Management 59:427-436.
  127. Afik, D. and W. H. Karasov (1995) Tradeoffs between digestion rate and efficiency in Yellow-rumped Warblers, and their ecological and evolutionary implications. Ecology 76:2247-2257.
  128. Afik, D., E. Caviedes-Vidal, C. Martinez del Rio, and W. H. Karasov (1995) Dietary modulation of intestinal hydrolytic enzymes in Yellow-rumped Warblers. American Journal of Physiology 269:R413-R420.
  129. Jakubas, W. J., C. G. Guglielmo, C. Vispo, and W. H. Karasov (1995). Sodium balance in ruffed grouse as influenced by sodium levels and plant secondary metabolites in quaking aspen. Canadian Journal of Zoology 73:1106-1114.
  130. Martinez del Rio, C., S. J. Cork, and W. H. Karasov (1994) Modeling gut function: An introduction. Pp. 25-53 In: The Digestive System in Mammals: Food, Form and Function, edited by D. J. Chivers and P. Langer, Cambridge University Press.
  131. Karasov, W. H., and S. J. Cork (1994) Glucose absorption by a nectarivorous bird: The passive pathway is paramount. American Journal of Physiology 267:G18-G26.
  132. Karasov, W. H. (1994) Digestive adaptations in avian omnivores. Pp. 494-497 in Proceedings of the XV International Congress of Nutrition, Smith-Gordon.
  133. Levey, D. J., and W. H. Karasov (1994) Gut passage of insects by European starlings and a comparison with other species. The Auk 111:478-481.
  134. Munger, J. C., and W. H. Karasov (1994) Costs of bot fly infection in white-footed mice: Energy and mass flow. Canadian Journal of Zoology 72:166-173.
  135. Ellner, L. R., and W. H. Karasov (1993) Latitudinal variation in the thermal biology of ornate box turtles. Copeia 1993(2):447-455.
  136. Nosek, J. A., S. R. Craven, W. H. Karasov, and R. E. Peterson (1993) 2,3,7,8-Tetrachlorodibenzo-p-dioxin in terrestrial environments: Implications for resource management. Wildlife Society Bulletin 21:179-187.
  137. Dykstra, C. R., and W. H. Karasov (1993) Nesting energetics of House Wrens ( Troglodytes aedon) in relation to maximal rates of energy flow. Auk 110:481-491.
  138. Karasov, W. H. (1993) In the belly of the bird. Natural History 102:32-37.
  139. Dykstra, C. R., and W. H. Karasov (1993) Daily energy expenditure by nestling house wrens (Troglodytes aedon). Condor 95:1028-1030.
  140. Hume, I. D., W. H. Karasov, and B. W. Darken (1993) Acetate, butyrate, glucose and proline uptake in the caecum and colon of prairie voles ( Microtus ochrogaster). Journal of Experimental Biology 176:285-297.
  141. Guglielmo, C. G., and W. H. Karasov (1993) Endogenous losses of mass and energy in Ruffed Grouse. Auk 110:386-390.
  142. Jakubas, W. J., W. H. Karasov, and C. G. Guglielmo (1993) Coniferyl benzoate in quaking aspen: Its effect on energy and nitrogen digestion and retention in ruffed grouse. Physiological Zoology 66:580-601.
  143. Jakubas, W. J., W. H. Karasov, and C. G. Guglielmo (1993) Ruffed grouse tolerance and biotransformation of the plant secondary metabolite coniferyl benzoate. Condor 95:625-640.
  144. Jakubas, W. J., B. C. Wentworth, and W. H. Karasov (1993) Physiological and behavioral effects of coniferyl benzoate on avian reproduction. Journal of Chemical Ecology 19:2353-2377.
  145. Dykstra, C. J., and W. H. Karasov (1992) Changes in House Wren gut structure and function in response to increased energy demands. Physiological Zoology 65:422-442.
  146. Karasov, W. H., M. W. Meyer, and B. W. Darken (1992) Tannic acid inhibition of amino acid and sugar absorption by mouse and vole intestine: Tests following acute and subchronic exposure. Journal of Chemical Ecology 18:719-736.
  147. Levey, D. J., and W. H. Karasov (1992) Digestive modulation in a seasonal frugivore, the American Robin (Turdus migratorius). American Journal of Physiology 262:G711-G718.
  148. Karasov, W. H. (1992) Tests of the adaptive modulation hypothesis for dietary control of intestinal nutrient transport. American Journal of Physiology 263:R496-502.
  149. Karasov, W. H., M. C. Brittingham, and S. A. Temple (1992) Daily energy expenditure by Black-capped Chickadees (Parus atricapillus) during winter. Auk 109:393-394.
  150. Munger, J. C., and W. H. Karasov (1991) Sublethal parasites in White-footed Mice: Impact on survival and reproduction. Canadian Journal of Zoology 69:398-404.
  151. Meyer, M. W., and W. H. Karasov (1991) Chemical aspects of herbivory in arid and semiarid habitats. In: Plant Defenses Against Mammalian Herbivory, ed. Palo, R. T. and C. T. Robbins, CRC Press, Inc., Boca Raton, Florida.
  152. Karasov, W. H. (1991) Ecological physiology of food exploitation: Insights from measurements and models of digestive function. In: Proceedings of the 20th International Ornithological Congress Vol. IV:2159-2169.
  153. Karasov, W. H., B. W. Darken, and M. C. Bottum (1991) Dietary regulation of intestinal ascorbate uptake in guinea pigs. American Journal of Physiology 260:G108-118.
  154. Titus, E., W. H. Karasov, and G. A. Ahearn (1991) Dietary modulation of intestinal nutrient transport in the teleost fish tilapia. American Journal of Physiology 261:R1568-1574.
  155. Karasov, W. H., and D. J. Levey (1990) Digestive system tradeoffs and adaptations of frugivorous birds. Physiological Zoology 63:1248-1270.
  156. Karasov, W. H. (1990) Digestion in birds: Chemical and physiological determinants and ecological implications. Pp. 391-415 in M. L. Morrison, C. J. Ralph, J. Verner, and J. R. Jehl, eds. Avian Foraging: Theory, Methodology, and Applications. Studies in Avian Biology No. 13, Cooper Ornithological Society, Kansas.
  157. Martinez del Rio, C., and W. H. Karasov (1990) Digestion strategies in nectar- and fruit-eating birds and the sugar composition of plant rewards. American Naturalist 136:618-637.
  158. Martinez del Rio, C., W. H. Karasov, and D. J. Levey (1989) Physiological basis and ecological consequences of sugar preferences in cedar waxwings. Auk 106:64-71.
  159. Munger, J. C., and W. H. Karasov (1989) Sublethal parasites and host energy budgets: Tapeworm infection in white-footed mice. Ecology 70:904-921.
  160. Meyer, M., and W. H. Karasov (1989) Antiherbivore chemistry of Larrea tridentata: Effects on desert woodrat (Neotoma lepida) feeding and nutrition. Ecology 70:953-961.
  161. Levey, D. J., and W. H. Karasov (1989) Digestive responses of temperate birds switching to fruit and insect diets. Auk 106:675-686.
  162. Munger, J. C., W. H. Karasov, and D. Chang (1989) Host genetics as a cause of overdispersion of parasites among hosts: How general a phenomenon? Journal of Parasitology 75(5):707-710.
  163. Karasov, W. H. (1989) Adaptation of nutrient transport during vertebrate evolution. Pp. 157-168 in Adaptation and Development of Gastro-intestinal Function, edited by M. W. Smith and F. V. Sepulveda. Manchester University Press, Manchester.
  164. Karasov, W. H. (1989) Nutritional bottleneck in an herbivore, the Desert Woodrat (Neotoma lepida). Physiological Zoology 62(6):1351-1382.
  165. Debnam, E. S., W. H. Karasov, and C. S. Thompson (1988) Nutrient uptake by rat enterocytes during diabetes mellitus: Evidence for an increased sodium electrochemical gradient. Journal of Physiology (London) 397:503-512.
  166. Karasov, W. H. (1988) The nutritional significance of regulation of intestinal nutrient transport. Pp. 51-63 in Nutritional Modulation of Neural Function, edited by John E. Morley, John H. Walsh and M. Barry Sterman. Academic Press, New York.
  167. Karasov, W. H. (1988) Nutrient transport across vertebrate intestine. Pp. 131-172 in Advances in Environmental and Comparative Physiology, Vol. 2, edited by R. Gilles. Springer-Verlag.
  168. Anderson, R. A., and W. H. Karasov (1988) Energetics of reproduction in a wide foraging lizard, Cnemidophorus tigris, and life history consequences of food acquisition mode. Ecological Monographs 58:79-110.
  169. Karasov, W. H., L. R. Han, and J. C. Munger (1988) Measurement of H2O by infrared absorbance in doubly labeled water studies of energy expenditure. American Journal of Physiology 255:R174-177.
  170. Karasov, W. H., and J. M. Diamond (1988) Interplay between physiology and ecology in digestion. BioScience 38(9):602-611.
  171. Karasov, W. H., and J. M. Diamond (1987) Adaptation of Intestinal Nutrient Transport. In Physiology of the Gastrointestinal Tract, edited by L. R. Johnson, Vol. II, pp. 1489-1497, Raven Press, New York.
  172. Karasov, W. H., D. H. Solberg, and J. M. Diamond (1987) Dependence of intestinal amino acid uptake on dietary protein or amino acid levels. American Journal of Physiology 252:G614-G625.
  173. Karasov, W. H., and E. S. Debnam (1987) Rapid adaptation of intestinal glucose transport: a brush-border or basolateral phenomenon? American Journal of Physiology 253:G54-61.
  174. Diamond, J. M., and W. H. Karasov (1987) Adaptive regulation of intestinal nutrient transporters. Proceedings of the National Academy of Science 84:2242-2245. USA.
  175. Karasov, W. H. (1987) Nutrient requirements and the design and function of guts in fish, reptiles, and mammals. Pp. 181-191 in Comparative Physiology: Life in Water and on Land, edited by P. Dejours, L. Bolis, C. R. Taylor, E. R. Weibel. Fidia Research Series, IX-Liviana Press, Padova.
  176. Diamond, J. M., W. H. Karasov, D. Phan, and F. L. Carpenter (1986) Digestive physiology is a determinant of foraging bout frequency in hummingbirds. Nature 320:62-63.
  177. Karasov, H. W. (1986). Energetics, Physiology and Vertebrate Ecology. Tree Vol. 1, no. 4 October.
  178. Karasov, W. H., E. Petrossian, L. Rosenberg, and J. M. Diamond (1986) How do food passage rate and assimilation differ between herbivorous lizards and nonruminant mammals? Journal of Comparative Physiology 156:599-609.
  179. Diamond, J. M., W. H. Karasov, D. Phan, and F. L. Carpenter. (1986). Digestive physiology is a determinant of foraging bout frequency in hummingbirds. Letters to Nature
  180. Karasov, W. H., D. Phan, J. M. Diamond, and F. L. Carpenter (1986) Food passage and intestinal nutrient absorption in hummingbirds. Auk 103:453-464.
  181. Karasov, W. H., D. Solberg, S. Carter, M. Hughes, D. Phan, F. Zollman, and J. M. Diamond (1986) Uptake pathways for amino acids in mouse intestine. American Journal of Physiology 251:G501-G508.
  182. Karasov, W. H., and J. M. Diamond (1985) Digestive adaptations for fueling the cost of endothermy. Science 228:202-204.
  183. Karasov, W. H., D. H. Solberg, and J. M. Diamond (1985) What transport adaptations enable mammals to absorb sugars and amino acids faster than reptiles? American Journal of Physiology 249:G271-283.
  184. Karasov, W. H., R. K. Buddington, and J. M. Diamond (1985) Adaptation of intestinal sugar and amino acid transport in vertebrate evolution. In Transport processes, iono-, and osmoregulation, edited by R. Gilles and M. G. Gilles-Baillien, pp. 227-239, Springer Verlag, Berlin.
  185. Karasov, W. H., D. H. Solberg, S. D. Chang, E. D. Stein, M. Hughes, and J. M. Diamond (1985) Is intestinal transport of sugars and amino acids subject to critical-period programming? American Journal of Physiology 249:G770-785.
  186. Karasov, W. H. (1985) Nutrient constraints in the feeding ecology of an omnivore in a seasonal environment. Oecologia 66:280-290.
  187. Karasov, W. H., and R. A. Anderson (1984) Interhabitat differences in energy acquisition and expenditure in a lizard. Ecology 65:235-247.
  188. Diamond, J. M., and W. H. Karasov (1984) Effect of dietary carbohydrate on monosaccharide uptake by mouse small intestine in vitro. Journal of Physiology 349:419-440.
  189. Karasov, W. H., and J. M. Diamond (1983) A simple method for measuring intestinal solute uptake in vitro. Journal of Comparative Physiology 152:105-116.
  190. Diamond, J. M., and W. H. Karasov (1983) Trophic control of the intestinal mucosa. Nature 304:18.
  191. Karasov, W. H., and J. M. Diamond (1983) Adaptive regulation of sugar and amino acid transport by vertebrate intestine. American Journal of Physiology 245:G443-462.
  192. Karasov, W. H., R. S. Pond III, D. H. Solberg, and J. M. Diamond (1983) Regulation of proline and glucose transport in mouse intestine by dietary substrate levels. Proceedings of the National Academy of Science, USA 80:7674-7677.
  193. Karasov, W. H. (1983) Water flux and water requirement in free-living antelope ground squirrels, Ammospermophilus leucurus. Physiological Zoology 56:94-105.
  194. Karasov, W. H. (1983) Wintertime energy conservation by huddling in antelope ground squirrels, Ammospermophilus leucurus. Journal of Mammalogy 64:341-345.
  195. Karasov, W. H. (1982) Energy assimilation, nitrogen requirement, and diet in free-living antelope ground squirrels, Ammospermophilus leucurus. Physiological Zoology 55:378-392.
  196. Anderson, R. A., and W. H. Karasov (1981) Contrasts in energy intake and expenditure in sit-and-wait and widely foraging lizards. Oecologia 49:67-72.
  197. Karasov, W. H. (1981) Daily energy expenditure and the cost of activity in a free-living mammal. Oecologia 51:253-259.