UC Berkeley Biological Clocks Laboratory

Curriculum Vitae: Irving Zucker
Departments of Psychology and Integrative Biology
University of California | Berkeley, CA 94720
Phone: (510) 642-7136 | Fax: (510) 642-5293 | e-mail: irvzuck at berkeley.edu
    Education:
    B.Sc., McGill University, 1961 Mathematics and Psychology
    Ph.D., University of Chicago, 1964 Section of Biopsychology
    Research Interests:
    Seasonal reproduction; pineal physiology; behavioral endocrinology; daily torpor; hibernation; temperature regulation, developmental psychobiology
    Job Experience:
    Department of Psychology, UC Berkeley, Professor, 1974-present
    Assistant and Associate Professor, 1966-1974.
    Department of Integrative Biology, UC Berkeley,Professor, 1995-present
    Research Associate, Department of Reproductive Physiology and
    Behavior, Oregon Regional Primate Research Center, 1964-1966.
    Visiting Scientist, Department of Pathology, University of Wisconsin Medical School, 1965.
    Honors and Prizes:
    Career Development Award (NIH)
    Fellow, American Association for Advancement of Science
    Constance Campbell Memorial Lecturer, Northwestern University
    President, Society for Research on Biological Rhythms
    Fellow, California Academy of Science
    Societies:
    Society for Neuroscience
    American Society of Mammalogists
    AAAS
    Society for Research on Biological Rhythms
    Society for Behavioral Neuroendocrinology
    American Psychological Society
    Editorial Advisory Boards:
    Neuroendocrinology 1984-1987
    Biology of Reproduction 1986-1990
    Journal of Biological Rhythms 1985-2004
    Physiology and Behavior 1989-1995
    Associate Editor: Hormones and Behavior 1987-1997
    Advisory Board, Soc. for Behavioral Neuroendocrinology 1995-Present
    Member, NIH Biopsychology Study Section Panel 1984-l988
    Advisory Board, Society for Research on Biological Rhythms, 1987-2004
    Bibliography

    1. Zucker, I. & Bindra, D. Peripheral sensory loss and exploratory behaviour. Canad. J. Psychol., 1961, 15, 237-263.

    2. Zucker, I. & McCleary, R. A. Perseveration in septal cats. Psychon. Sci., 1964, 1, 387-388.

    3. Zucker, I. & Milner, P. The effect of amphetamine on established hoarding in the rat. Psychon. Sci., 1964, 1, 367.

    4. Milner, P. & Zucker, I. Specific hunger for potassium in the rat. Psychon. Sci., 1965, 2, 17-18.

    5. Zucker, I. Short term salt preference of potassium deprived rats. Am. J. Physiol., 1965, 208, 1071-1074.

    6. Zucker, I. Effect of lesions of the septal-limbic area on the behavior of cats. J. Comp. Physiol. Psychol., 1965, 60, 344-352.

    7. Zucker, I. Effects of an anti-androgen on mating behaviour of male guinea-pigs and rats. J. Endocrin., 1966, 35, 209-210.

    8. Zucker, I. & Feder, H. H. The effect of neonatal reserpine treatment on female sex behaviour of rats. J. Endocrin., 1966, 35, 423-424.

    9. Zucker, I. Facilitatory and inhibitory effects of progesterone on sexual responses of spayed guinea pigs. J. Comp. Physiol. Psychol., 1966, 62, 376-381.

    10. Zucker, I. Actions of progesterone in the control of sexual receptivity of the spayed female rat. J. Comp. Physiol. Psychol., 1967, 63, 313-316.

    11. Zucker, I. Progesterone in the experimental control of the behavioural sex cycle in the female rat. J. Endocrin., 1967, 38, 269-277.

    12. Zucker, I. Suppression of oestrous behaviour in the immature male rat. Nature, 1967, 216, 88-89.

    13. Zucker, I. & Goy, R. W. Sexual receptivity in the guinea pig: Inhibitory and facilitatory actions of progesterone and related compounds. J. Comp. Physiol. Psychol., 1967, 64, 378-383.

    14. Zucker, I. Biology and behavior. (Review of Readings in physiological psychology: The bodily basis of behavior, T. K. Landauer, Ed.). Contemp. Psychol., 1968, 13, 116.

    15. Zucker, I. Biphasic effects of progesterone on sexual receptivity in the female guinea pig. J. Comp. Physiol. Psychol., 1968, 65, 472-478.

    16. Kuehn, R. E. & Zucker, I. Reproductive behavior of the Mongolian gerbil (Meriones unguiculatus). J. Comp. Physiol. Psychol., 1968, 66, 747-752.

    17. Zucker, I. & Wade, G. Sexual preference of male rats. J. Comp. Physiol. Psychol., 1968, 66, 816-819.

    18. Powers, J. B. & Zucker, I. Sexual receptivity in pregnant and pseudo-pregnant rats. Endocrinology, 1969, 84, 820-827.

    19. Zucker, I. Ethology. Amer. People's Encyclopedia, 1969, 326-327.

    20. Zucker, I. Hormonal determinants of sex differences in saccharin preference, food intake and body weight. Physiol. and Behav., 1969, 4, 595-602.

    21. Wade, G. N. & Zucker, I. Hormonal and developmental influences on rat saccharin preferences. J. Comp. Physiol. Psychol., 1969, 69, 291-300.

    22. Wade, G. N. & Zucker, I. Taste preferences of female rats: Modification by neonatal hormones, food deprivation and prior experience. Physiol. and Behav., 1969, 4, 935-943.

    23. Wade, G. N. & Zucker, I. Development of hormonal control over food intake and body weight in female rats. J. Comp. Physiol. Psychol., 1970, 70, 213-220.

    24. Chester, R. V. & Zucker, I. Influence of male copulatory behavior on sperm transport, pregnancy and pseudopregnancy in female rats. Physiol. and Behav., 1970, 5, 35-43.

    25. Wade, G. N. & Zucker, I. Hormonal modulation of responsiveness to an aversive taste stimulus in rats. Physiol. and Behav., 1970, 5, 269-273.

    26. Wade, G. N. & Zucker, I. Modulation of food intake and locomotor activity in female rats by diencephalic hormone implants. J. Comp. Physiol. Psychol., 1970, 72, 328-336.

    27. Zucker, I. Light-dark rhythms in rat eating and drinking behavior. Physiol. and Behav., 1971, 6, 115-126.

    28. Bell, D. D. & Zucker, I. Sex differences in body weight and eating: Organization and activation by gonadal hormones in the rat. Physiol. and Behav., 1971, 7, 27-34.

    29. Stephan, F. K., Valenstein, E. S., & Zucker, I. Copulation and eating during electrical stimulation of the rat hypothalamus. Physiol. and Behav., 1971, 7, 587-593.

    30. Zucker, I., Wade, G. N., & Ziegler, R. Sexual and hormonal influences on eating, taste preferences, and body weight of hamsters. Physiol. and Behav., 1972, 8, 101-111.

    31. Stephan, F. K. & Zucker, I. Rat drinking rhythms: Central visual pathways and endocrine factors mediating responsiveness to environmental illumination. Physiol. and Behav., 1972, 8, 315-326.

    32. Stephan, F. K. & Zucker, I. Circadian rhythms in drinking behavior and locomotor activity of rats are eliminated by hypothalamic lesions. Proc. Nat. Acad. Sci. USA, 1972, 69, 1583-1586.

    33. Zucker, I. Body weight and age as factors determining estrogen responsiveness in the rat feeding system. Behav. Biol., 1972, 7, 527-542.

    34. Zucker, I. & Stephan, F. K. Light-dark rhythms in hamster eating, drinking and locomotor behaviors. Physiol. and Behav., 1973, 11, 239-250.

    35. Salber, P. & Zucker, I. Absence of salt appetite in adrenalectomized and DOCA-treated hamsters. Behav. Biol., 1974, 10, 295-311.

    36. Ross, G. E. & Zucker, I. Progesterone and the ovarian-adrenal modulation of energy balance in rats. Horm. Behav., 1974, 5, 43-62.

    37. Stephan, F. K. & Zucker, I. Endocrine and neural mediation of the effects of constant light on water intake of rats. Neuroendocrinology, 1974, 14, 44-60.

    38. Rusak, B. & Zucker, I. Fluid intake of rats in constant light and during feeding restricted to the light or dark portion of the illumination cycle. Physiol. and Behav., 1974, 13, 91-100.

    39. Rusak, B. & Zucker, I. Biological rhythms and animal behavior. Ann. Rev. Psychol., 1975, 26, 137-171.

    40. Landau, I. T. & Zucker, I. Estrogenic regulation of body weight in the female rat. Horm. Behav., 1976, 7, 29-39.

    41. Zucker, I., Rusak, B., & King, R. G., Jr. Neural bases for circadian rhythms in rodent behavior. In A. H. Riesen & R. F. Thompson (Eds.), Advances in psychobiology (Vol. 3). NY: John Wiley & Sons, Inc., 1976, pp. 35-74.

    42. Fitzgerald, K. M. & Zucker, I. Circadian organization of the estrous cycle of the golden hamster. Proc. Nat. Acad. Sci. USA, 1976, 73, 2923-2927.

    43. Silverman, H. J. & Zucker, I. Absence of post-fast food compensation in the golden hamster (Mesocricetus auratus). Physiol. Behav., 1976, 17, 271-285.

    44. Block, M. & Zucker, I. Circadian rhythms of rat locomotor activity after lesions of the midbrain raphe nuclei. J. Comp. Physiol., 1976, 109, 235-247.

    45. Zucker, I. Light, behavior, and biologic rhythms. Hospital Practice, 1976, 11, 83-91.

    46. Morin, L. P., Fitzgerald, K. M., Rusak, B., & Zucker, I. Circadian organization and neural mediation of hamster reproductive rhythms. Psychoneuroendocrinology, 1977, 2, 73-98.

    47. Morin, L. P., Fitzgerald, K. M., & Zucker, I. Estradiol shortens the period of hamster circadian rhythms. Science, 1977, 196, 305-307.

    48. Bittman, E. L. & Zucker, I. Influences of the adrenal gland and photo-period on the hamster oestrous cycle. J. Reprod. Fert., 1977, 50, 331-333.

    49. Zucker, I. & Morin, L. P. Photoperiodic influences on testicular regression, recrudescence and the induction of scotorefractoriness in male golden hamsters. Biol. Reprod., 1977, 17, 493-498.

    50. Eskes, G. A. & Zucker, I. Photoperiodic regulation of the hamster testis: Dependence on circadian rhythms. Proc. Nat. Acad. Sci. USA, 1978, 75, 1034-1038.

    51. Fitzgerald, K., Zucker, I., & Rusak, B. An evaluation of homeostasis of circadian periodicity in the golden hamster. J. Comp. Physiol., 1978, 123, 265-269.

    52. Morin, L. P. & Zucker, I. Photoperiodic regulation of copulatory behaviour in the male hamster. J. Endocrin., 1978, 77, 249-258.

    53. Rusak, B. & Zucker, I. Neural regulation of circadian rhythms. Physiol. Rev., 1979, 59, 449-526.

    54. Zucker, I. Hormones and hamster circadian organization. In M. Suda, O. Hayaishi, & H. Nakagawa (Eds.), Biological rhythms and their central mechanism. Amsterdam: Elsevier/North Holland Press, 1979, 369-381.

    55. Johnston, P. G. & Zucker, I. Photoperiodic influences on gonadal development and maintenance in the cotton rat, Sigmodon hispidus. Biol. Reprod., 1979, 21, 1-8.

    56. Bittman, E. L., Goldman, B. D., & Zucker, I. Testicular responses to melatonin are altered by lesions of the suprachiasmatic nuclei in golden hamsters. Biol. Reprod., 1979, 21, 647-656.

    57. Zucker, I., Johnston, P. G., & Frost, D. Comparative, physiological and biochronmetric analyses of rodent seasonal reproductive cycles. In R. J. Reiter & B. K. Follett (Eds.), Progress in reproductive biology, 1980, 5, 102-133.

    58. Zucker, I., Cramer, C. P., & Bittman, E. L. Regulation by the pituitary of circadian rhythms in the hamster. J. Endocrin., 1980, 85, 17-25.

    59. Zucker, I., Fitzgerald, K. M., & Morin, L. P. Sex differentiation of the circadian system in the golden hamster. Am. J. Physiol., 1980, 238, R97-R101.

    60. Johnston, P. G. & Zucker, I. Photoperiodic regulation of reproductive development in white-footed mice (Peromyscus leucopus). Biol. Reprod., 1980, 22, 983-989.

    61. Johnston, P. G. & Zucker, I. Photoperiodic regulation of the testes of adult white-footed mice (Peromyscus leucopus). Biol. Reprod., 1980, 23, 859-866.

    62. Johnston, P. G. & Zucker, I. Anti-gonadal effects of melatonin in white-footed mice (Peromyscus leucopus). Biol. Reprod., 1980, 23, 1069-1074.

    63. Nelson, R. J. & Zucker, I. Photoperiodic control of reproduction in olfactory bulbectomized rats. Neuroendocrinology, 1981, 32, 266-271.

    64. Nelson, R. J. & Zucker, I. Absence of extraocular photoreception in diurnal and nocturnal rodents exposed to direct sunlight. Comp. Biochem. Physiol., 1981, 69A, 145-148.

    65. Bittman, E. L. & Zucker, I. Photoperiodic termination of hamster refractoriness: Participation of the pineal gland. Biol. Reprod., 1981, 24, 568-572.

    66. Beasley, L. J., Johnston, P. G., & Zucker, I. Photoperiodic regulation of reproduction in post-partum Peromyscus leucopus. Biol. Reprod., 1981, 24, 962-966.

    67. Carmichael, M. S., Nelson, R. J., & Zucker, I. Hamster activity and estrous cycles: Control by a single versus multiple circadian oscillator(s). Proc. Nat. Acad. Sci., 1981, 78, 7830-7834.

    68. Zucker, I. & Carmichael, M. S. Circadian rhythms, brain peptides and reproduction. In J. B. Martin, S. Reichlin, & K. L. Bick (Eds.), Neurosecretion and brain peptides: Implications for brain functions and neurologic disease. NY: Raven Press, 1981, pp. 459-473.

    69. Nelson, R. J., Bamat, M. K., & Zucker, I. Photoperiodic regulation of testis function in rats: Mediation by a circadian mechanism. Biol. Reprod., 1982, 26, 329-335.

    70. Johnston, P. G., Boshes, M., & Zucker, I. Photoperiodic inhibition of testicular development is mediated by the pineal gland in white-footed mice. Biol. Reprod., 1982, 26, 597-602.

    71. Licht, P., Zucker, I., Hubbard, G., & Boshes, M. Circannual rhythms of plasma testosterone and luteinizing hormone levels in golden-mantled ground squirrels (Spermophilus lateralis). Biol. Reprod., 1982, 27, 411-418.

    72. Zucker, I., & Boshes, M. Circannual body weight rhythms of ground squirrels: Role of gonadal hormones. Am. J. Physiol., 1982, 243, R546-R551.

    73. Carmichael, M. S., & Zucker, I. Entrainment to non-24-h days and gestation length of golden hamsters. J. Reprod. Fert., 1982, 66, 691-693.

    74. Dark, J., Johnston, P. G., Healy, M., & Zucker, I. Latitude of origin influences photoperiodic control of reproduction of deer mice (Peromyscus maniculatus). Biol. Reprod., 1983, 28, 213-220.

    75. Johnston, P. G. & Zucker, I. Lability and diversity of circadian rhythms of cotton rats Sigmodon hispidus. Am. J. Physiol., 1983, 244, R338-R346.

    76. Zucker, I., Boshes, M., & Dark, J. Suprachiasmatic nuclei influence circannual and circadian rhythms of ground squirrels. Am. J. Physiol., 1983, 244, R472-R480.

    77. Zucker, I. & Licht, P. Circannual and seasonal variations in plasma luteinizing hormone levels of ovariectomized ground squirrels (Spermophilus lateralis). Biol. Reprod., 1983, 28, 178-185.

    78. Zucker, I. & Licht, P. Seasonal variations in plasma luteinizing hormone levels of gonadectomized male ground squirrels (Spermophilus lateralis). Biol. Reprod., 1983, 29, 278-285.

    79. Zucker, I. Motivation, biological clocks, and temporal organization of behavior. In Handbook of behavioral neurobiology (Vol. 6, edited by E. Satinoff & P. Teitelbaum). NY: Plenum Press, 1983, pp. 3-21.

    80. Dark, J., Zucker, I., & Wade, G. N. Photoperiodic regulation of body mass, food intake, and reproduction in meadow voles. Am. J. Physiol., 1983, 245, R334-R338.

    81. Frost, D. & Zucker, I. Photoperiod and melatonin influence seasonal gonadal cycles in the grasshopper mouse (Onychomys leucogaster). J. Reprod. Fert., 1983, 69, 237-244.

    82. Nelson, R. J., Dark, J., & Zucker, I. Influence of photoperiod, nutrition and water availability on reproduction of male California voles (Microtus pennsylvanicus). J. Reprod. Fert., 1983, 69, 473-477.

    83. Dark, J. & Zucker, I. Short photoperiods reduce winter energy requirements of the meadow vole, Microtus pennsylvanicus. Physiol. Beh., 1983, 31, 699-702.

    84. Zucker, I. Chronobiology and Neuroscience. (Review of Vertebrate Circadian Systems. Structure and Physiology. J. Aschoff, S. Daan, & G. Groos, Eds.) Science, 1983, 220, 854-855.

    85. Dark, J., Zucker, I., & Wade, G. N. Short photoperiods counteract the effects of ovariectomy on energy balance of voles. Am. J. Physiol., 1984, 246, R31-R34.

    86. Weiner, C., Schlechter, N., & Zucker, I. Photoperiodic influences on testicular development of deermice from two different altitudes. Biol. Reprod., 1984, 30, 507-513.

    87. Beasley, L. J. & Zucker, I. Photoperiod influences the annual reproductive cycle of the male pallid bat (Antrozous pallidus). J. Reprod. Fert., 1984, 70, 567-573.

    88. Dark, J., Forger, N. G., & Zucker, I. Rapid recovery of body mass after surgical removal of adipose tissue in ground squirrels. Proc. Nat. Acad. Sci., 1984, 81, 2270-2272.

    89. Beasley, L. J., Pelz, K. M., & Zucker, I. Circannual rhythms of body weight in pallid bats. Am. J. Physiol., 1984, 246, R955-R958.

    90. Dark, J. & Zucker, I. Gonadal and photoperiodic control of seasonal body weight changes in male voles. Am. J. Physiol., 1984, 247, R84-R88.

    91. Dark, J., Wade, G. N., & Zucker, I. Ovarian modulation of lipoprotein lipase activity in white adipose tissue of ground squirrels. Physiol. Behav., 1984, 32, 75-78.

    92. Forger, N. G., & Zucker, I. Photoperiodic regulation of reproductive development in male white-footed mice (Peromyscus leucopus) born at different phases of the breeding season. J. Reprod. Fert., 1985, 73, 271-278.

    93. Dark, J., Pickard, G. E., & Zucker, I. Persistence of circannual rhythms in ground squirrels with lesions of the suprachiasmatic nuclei. Brain Res., 1985, 332, 201-207.

    94. Zucker, I. Pineal gland influences period of circannual rhythms of ground squirrels. Am. J. Physiol., 1985, 249, R111-R115.

    95. Martinet, L. & Zucker, I. Role of the pineal gland in circadian organization of diurnal ground squirrels. Physiol Behav., 1985, 34 799-803.

    96. Smale, L., Nelson, R. J., & Zucker, I. Neuroendocrine responsiveness to oestradiol and male urine in the neonatally androgenized prairie vole (Microtus ochrogaster). J. Reprod. Fert., 1985, 74, 491-496.

    97. Nelson, R. J., Fleming, A. S., Wysocki, C. J., Shinder, T. W., & Zucker, I. Chemosensory and neural influences on photoperiodic responsiveness of laboratory rats. Neuroendocrinology, 1985, 40, 285-290.

    98. Dark, J., Forger, N. G., Stern, J. S., & Zucker, I. Recovery of lipid mass after removal of adipose tissue in ground squirrels. Am. J. Physiol., 1985, 249, R73-R78.

    99. Dark, J. & Zucker, I. Seasonal cycles in energy balance: Regulation by light. Ann. NY Acad. Sci., 1985, 453, 170-181.

    100. Dark, J. & Zucker, I. Circannual rhythms of ground squirrels: Role of the hypothalamic paraventricular nucleus. J. Biol. Rhythms, 1986, 1, 17-23.

    101. Forger, N. G., Dark, J., & Zucker, I. Recovery of white adipose tissue after lipectomy in female ground squirrels. Can. J. Zool., 1986, 64, 128-131.

    102. Smale, L., Pelz, K., Zucker, I., & Licht, P. Neonatal androgenization in ground squirrels: Influence on sex differences in body mass and luteinizing hormone levels. Biol. Reprod., 1986, 34, 507-511.

    103. Lee, T. M., Carmichael, M. S., & Zucker, I. Circannual variations in circadian rhythms of ground squirrels. Am. J. Physiol., 1986, 250, R831-R836.

    104. Pickard, G. E. & Zucker, I. Influence of deuterium oxide on circadian activity rhythms of hamsters: Role of the suprachiasmatic nuclei. Brain Res., 1986, 376, 149-154.

    105. Forger, N. G., Dark, J., Barnes, B. M., & Zucker, I. Fat ablation and food restriction influence reproductive development and hibernation in ground squirrels. Biol. Reprod., 1986, 34, 831-840.

    106. Carmichael, M. S. & Zucker, I. Circannual rhythms of ground squirrels: A test of the frequency demultiplication hypothesis. J. Biol. Rhythms, 1986, 1, 277-284.

    107. Dark, J., Wade, G. N., & Zucker, I. Short day lengths decrease body mass of overweight female meadow voles. Physiol. Behav., 1986, 38, 381-384.

    108. Dark, J. & Zucker, I. Photoperiodic regulation of body mass and fat reserves in the meadow vole. Physiol. Behav., 1986, 38, 851-854.

    109. Beasley, L. J. & Zucker, I. Circannual cycles of body mass, food intake and reproductive condition in male pallid bats. Physiol. Behav., 1986, 38, 697-702.

    110. Barnes, B. M., Kretzmann, M., Licht, P., & Zucker, I. The influence of hibernation on testis growth and spermatogenesis in the golden-mantled ground squirrel, Spermophilus lateralis. Biol. Reprod., 1986, 35, 1289-1297.

    111. Zucker, I. & Dark, J. Neuroendocrine substrates of circannual rhythms in ground squirrels. In Living in the cold, H. C. Heller et al. (Eds.), NY: Elsevier, 1986, pp. 351-358.

    112. Dark, J., Forger, N. G., & Zucker, I. Regulation and function of lipid mass during the annual cycle of the golden-mantled ground squirrel. In Living in the cold, H. C. Heller et al. (Eds.), NY: Elsevier, 1986, pp. 445-451.

    113. Barnes, B. M., Kretzmann, M., Licht, P., & Zucker, I. Reproductive development in hibernating ground squirrels. In Living in the cold, H. C. Heller et al. (Eds.), NY: Elsevier, 1986, pp. 245-251.

    114. Nelson, R. J. & Zucker, I. Spontaneous testicular recrudescence of Syrian hamsters: Role of stimulatory photoperiods. Physiol. Behav., 1987, 39, 615-617.

    115. Dark, J., Dark, K. A., & Zucker, I. Long day lengths increase brain weight and DNA content in the meadow vole, Microtus pennsylvanicus. Brain Res., 1987, 409, 302-307.

    116. Dark, J., Whaling, C. S., & Zucker, I. Androgens exert opposite effects on body mass of heavy and light voles. Horm. Behav., 1987, 21, 471-477.

    117. Lee, T. M., Smale, L., Zucker, I., & Dark, J. Role of photoperiod during pregnancy and lactation in the meadow vole, Microtus pennsylvanicus. J. Reprod. Fert., 1987, 81, 343-350.

    118. Lee, T. M., Smale, L., Zucker, I., & Dark, J. Interaction of daylength and lactation in the control of pelage development and nest-building in female meadow voles (Microtus pennsylvanicus). J. Reprod. Fert., 1987, 81, 351-356.

    119. Lee, T. M., Smale, L., Zucker, I., & Dark, J. Influence of daylength experienced by dams on postnatal development of young meadow voles (Microtus pennsylvanicus). J. Reprod. Fert., 1987, 81, 337-342.

    120. Barnes, B. M., Licht, P., & Zucker, I. Temperature dependence of in vitro androgen production in testes from hibernating ground squirrels, Spermophilus lateralis. Can. J. Zool., 1987, 65, 3020-3023.

    121. Zucker, I. Seasonal affective disorders: Animal models non fingo. J. Biol. Rhythms, 1988, 3, 209-223.

    122. Barnes, B. M., Kretzmann, M., Zucker, I., & Licht, P. Plasma androgen and gonadotropin levels during hibernation and testicular maturation in golden-mantled ground squirrels. Biol. Reprod., 1988, 38, 616-622.

    123. Forger, N. G., Dark, J., Stern, J. S., Wade, G. N., & Zucker, I. Lipectomy influences white adipose tissue lipoprotein lipase activity and plasma triglyceride levels in ground squirrels. Metabolism, 1988, 37, 782-786.

    124. Smale, L., Nelson, R. J., & Zucker, I. Daylength influences pelage and plasma prolactin concentrations but not reproduction in the prairie vole, Microtus ochrogaster. J. Reprod. Fert., 1988, 83, 99-106.

    125. Lee, T.M. and Zucker, I. Vole infant development is influenced perinatally by maternal photoperiodic history. Am. J. Physiol., 1988, 255, R831-R838.

    126. Zucker, I. Neuroendocrine substrates of circannual rhythms. In Biological Rhythms and Mental Disorders, D.J. Kupfer, T.H. Monk and J. D. Barchas (Eds.), NY: Guilford Press, 1988, pp. 219-245.

    127. Smale, L., Dark, J. and Zucker, I. Pineal and photoperiodic influences on fat deposition, pelage and testicular activity in male meadow voles. J. Biol. Rhythms, 1988, 3, 349-355.

    128. Dark, J, Stern, J. S., & Zucker, I. Adipose tissue dynamics during cyclic weight loss and weight gain of ground squirrels. Am. J. Physiol. 1989, 1989, 256, R1286-R1292.

    129. Ruby, N. F., Ibuka, N., Barnes, B., & Zucker, I. Suprachiasmatic nuclei influence torpor and circadian temperature rhythms in hamsters. Am. J. Physiol. 1989, 257, R210-R215.

    130. Lee, T. M., Spears, N., Tuthill, C. R., & Zucker, I. Maternal melatonin treatment influences rates of neonatal development of meadow vole pups. Biol. Reprod., 1989, 40, 495-502.

    131. Smale, L., Pedersen, J. M., Block, M., & Zucker, I. Investigation of conspecific male odours by female prairie voles. Anim. Behav., 1990, 39, 768-774.

    132. Lee, T. M. & Zucker, I. Photoperiod synchronizes reproduction and growth in the southern flying squirrel, Glaucomys volans. Can. J. Zool., 1990, 68, 134-139.

    133. Lee, T. M., Holmes, W. G., & Zucker, I. Temperature-dependence of circadian rhythms in golden-mantled ground squirrels. J. Biol. Rhythms, 1990, 5, 25-34.

    134. Smale, L., Lee, T. M., Nelson, R. J., & Zucker, I. Prolactin counteracts effects of short day lengths on pelage growth in the meadow vole, Microtus pennsylvanicus. J. Exp. Zool., 1990, 253, 186-188.

    135. Dark, J., Kilduff, T. S., Heller, H. C., Licht, P., & Zucker, I. Suprachiasmatic nuclei influence hibernation rhythms of golden-mantled ground squirrels. Brain Res., 1990, 509, 111-118.

    136. Spears, N., Finley, C. M., Whaling, C. S., Tuthill, C. R., & Zucker, I. Sustained reproductive responses in Djungarian hamsters (Phodopus sungorus) exposed to a single long day. J. Reprod. Fert., 1990, 88, 635-643.

    137. Dark, J., Spears, N., Whaling, C. S., Wade, G. N., Meyer, J. S., & Zucker, I. Long day lengths promote brain growth in meadow voles. Dev. Brain Res., 1990, 53, 264-269.

    138. Whaling, C. S., Zucker, I., Wade, G. N., & Dark, J. Sexual dimorphism in brain weight of meadow voles: Role of gonadal hormones. Dev. Brain Res., 1990, 53, 270-275.

    139. Spears, N., Meyer, J. S., Whaling, C., Wade, G. N., Zucker, I., & Dark, J. Long day lengths enhance myelination of midbrain and hindbrain regions of developing meadow voles. Dev. Brain Res., 1990, 55, 103-108.

    140. Lee, T. M., Pelz, K., Licht, P., & Zucker, I. Testosterone influences hibernation in golden-mantled ground squirrels. Am. J. Physiol., 1990, 259, R760-767.

    141. Zucker, I., Lee, T.M., & Dark, J. The suprachiasmatic nucleus and annual rhythms of mammals. In The Suprachiasmatic Nucleus: The Mind's Clock, D.C. Klein et al. (Eds.), NY: Oxford University Press, 1991, pp. 246-259.

    142. Lee, T. M. & Zucker, I. Suprachiasmatic nucleus and photic entrainment of circannual rhythms in ground squirrels. J. Biol. Rhythms, 1991, 6, 315-330.

    143. Ferkin, M. H. & Zucker, I. Seasonal control of odour preferences of meadow voles, Microtus pennsylvanicus, by photoperiod and ovarian hormones. J. Reprod. Fert., 1991, 92, 433-441.

    144. Ferkin, M. H., Gorman, M. R., & Zucker, I. Ovarian hormones influence odor cues emitted by female meadow voles, Microtus pennsylvanicus. Horm. and Behav., 1991, 25, 572-581.

    145. Dark, J., Ruby, N. F., Wade, G. N., Licht, P., & Zucker, I. Accelerated reproductive development in juvenile male ground squirrels fed a high fat diet. Am. J. Physiol., 1992, 262, R644-R650.

    146. Ferkin, M. H., Gorman, M. R., & Zucker, I. Influence of gonadal hormones on odours emitted by male meadow voles Microtus pennsylvanicus. J. Reprod. Fert., 1992, 25, 729-736.

    147. Lee, T. M. & Zucker, I. Estradiol phase-shifts circannual rhythms of golden mantled ground squirrels. Am. J. Physiol., 1992, 262, R1096-R1099.

    148. Ruby, N. F. & Zucker, I. Daily torpor in the absence of the suprachiasmatic nucleus in Siberian hamsters. Am. J. Physiol., 1992, 263, R353-R362.

    149. Zucker, I., Thomas, E.M., & Lee, T.M. Temperature-dependence of mammalian circadian rhythms. In Circadian Rhythms, M. Zatz (Ed.), Discussions in Neuroscience, 1992, 8, pp. 48-50.

    150. Ruby, N.F., Nelson, R.J., Licht, P., & Zucker, I. Prolactin and testosterone inhibit torpor in Siberian hamsters. Am. J. Physiol., 1993, 264, R123-R128.

    151. Ruby, N.F., Zucker, I., Licht, P., Dark, J. Olfactory bulb removal lengthens the period of circannual rhythms and disrupts hibernation in golden-mantled ground squirrels. Brain Res., 1993, 608, 1-6.

    152. Whaling, C.S., Kelly, K.K., Finley, C.M., Spears, N., Licht, P. & Zucker, I. Sustained hormonal responses of Siberian hamsters (Phodopus sungorus) to a single longer day at weaning. Biol. Reprod., 1993, 49, 555-560.

    153. Aronson, B.D., Bell-Pedersen, D., Block, G.D., Bos, N.P.A., Dunlap, J.C., Eskin, A., Garceau, N.Y., Geusz, M.E., Johnson, K.A., Khalsa, S.B.S., Koster-Van Hoffen, G.C., Koumenis, C., Lee, T.M., LeSauter, J., Lindgren, K.M., Liu, Q., Loros, J.J., Michel, S.H., Mirmiran, M., Moore, R.Y., Ruby, N.F., Silver, R., Turek, F.W., Zatz, M., & Zucker, I. Circadian rhythms. Brain Res. Rev., 1993,18, 315-333.

    154. Thomas, E.L., Jewett, M.E. & Zucker, I. Torpor shortens the period of Siberian hamster circadian rhythms. Am. J. Physiol., 1993, 265, R951-R956.

    155. Gorman, M.R., Ferkin, M.H., Nelson, R.J. & Zucker, I. Reproductive status influences odor preferences of the meadow vole, Microtus pennsylvanicus, in winter day lengths. Can. J. Zool. 1993, 71, 1748-1754.

    156. Zucker, I., Ruby, N.F. & Dark, J. The suprachiasmatic nucleus mediates rhythms of hibernation and daily torpor in rodents. In Life in the Cold, C. Carey, G.L. Florant, B.A. Wunder and B. Horwitz (Eds.), Westview Press, Boulder, 1993, pp. 277-289.

    157. Dark, J., Miller, D.R., & Zucker, I. Reduced glucose availability induces torpor in Siberian hamsters. Am. J. Physiol., 1994, 267, R496-R501.

    158. Bittman, E.L., Thomas, E.M., & Zucker, I. Melatonin binding sites in sciurid and hystricomorph rodents: Studies on ground squirrels and guinea pigs. Brain Research, 1994, 648, 73-79.

    159. Kelly, K.K., Goldman, B.D., & Zucker, I. Gonadal growth and hormone concentrations in photoregressed Siberian hamsters: Pinealectomy versus photostimulation. Biol. Reprod., 1994, 51, 1046-1050.

    160. Finley, C.M., Gorman, M.R., Tuthill, C.R., & Zucker, I. Long-term reproductive effects of a single long day in the Siberian hamster (Phodopus sungorus). J. Biol. Rhythms, 1995, 10, 33-41.

    161. Kelly, K.K., Dark, J., & Zucker, I. Suprachiasmatic nucleus and photoperiodic regulation of gonadal development in the Siberian hamster, Phodopus sungorus. Neurosci. Let., 190, 1995, 129-132.

    162. Gorman, M.R., & Zucker, I. Testicular regression and recrudescence without subsequent photorefractoriness in Siberian hamsters. Am. J. Physiol., 1995, 269, R800- R806.

    163. Gorman, M.R., & Zucker, I. Seasonal adaptations of Siberian hamsters. II. Pattern of change in day length controls annual testicular and body weight rhythms. Biol. Reprod., 1995, 53, 116-125.

    164. Lee, T.M., & Zucker, I. Seasonal variations in circadian rhythms persist in gonadectomized golden-mantled ground squirrels. J. Biol. Rhythms, 1995, 10, 188-195.

    165. Dark, J., Miller, D. R., & Zucker, I. Gonadectomy in the spring reinstates hibernation in male golden-mantled ground squirrels. Am. J. Physiol., 1996, 270, R1240-R1243.

    166. Dark, J., Miller, D. R., Licht, P., & Zucker, I. Glucoprivation counteracts effects of testosterone on daily torpor in Siberian hamsters. Am. J. Physiol., 1996, 270, R398-R403.

    167. Ruby, N. F., Dark, J., Heller, H. C., & Zucker, I. Ablation of suprachiasmatic nucleus alters timing of hibernation in ground squirrels. Proc. Natl. Acad. Sci. USA, 1996, 93, 9864-9868.

    168. Prendergast, B. J., Kelly, K. K., Zucker, I., & Gorman, M. R. Enhanced reproductive responses to melatonin in juvenile Siberian hamsters. Am. J. Physiol., 1996, 271, R1041-R1046.

    169. Gorman, M. R., Freeman, D. A., & Zucker, I. Photoperiodism in hamsters: Abrupt versus gradual changes in day length differentially entrain morning and evening circadian oscillators. J. Biol. Rhythms, 1997, 12, 122-135.

    170. Gorman, M. R., & Zucker, I. Environmental induction of photononresponsiveness in the Siberian hamster, Phodopus sungorus. Am. J. Physiol., 1997, 272, R887-R895.

    171. Gorman, M. R., & Zucker, I. Pattern of change in melatonin duration determines testicular responses in Siberian hamsters, Phodopus sungorus. Biol. Reprod, 1997, 56, 668-673.

    172. Hiebert, S. M., Lee, T. M., Licht, P., & Zucker, I. Estradiol phase shifts circannual body mass rhythms of male ground squirrels. Am. J. Physiol., 1998, 274, R754-R759.

    173. Ruby, N. F., Dark, J., Heller, H. C., & Zucker, I. Suprachiasmatic nucleus: Role in circannual body mass and hibernation rhythms of ground squirrels. Brain Res., 1998, 782, 63-72.

    174. Stamper, J. L., Zucker, I., Lewis, D.A. & Dark, J. Torpor in lactating Siberian hamsters subjected to glucoprivation. Am. J. Physiol., 1998, 274, R46-R51.

    175. Gorman, M.R. , & Zucker, I. Mammalian seasonal rhythms: New perspectives gained from the use of simulated natural photoperiods. In, Biological Clocks: Mechanisms and Applications, Y. Touitou (ed.), Elsevier Science, 1998, pp. 195-204.

    176. Prendergast, B.J., Zucker, I., Yellon, S.M., Ringold, D.A. & Gorman, M.R. Melatonin chimeras alter reproductive development and photorefractoriness in Siberian hamsters. J. Biol. Rhythms, 1998, 13, 518-531.

    177. Zucker, I.& Prendergast, B. J. Circannual rhythms of mammalian reproduction. In, Encyclopedia of Reproduction, E. Knobil & J. Neill (eds.), 1999, vol. 1, pp.621-627.

    178. Stamper, J.L., Dark, J. & Zucker, I. Photoperiod modulates torpor and food intake in Siberian hamsters challenged with metabolic inhibitors. Physiol. Behav. 1999, 66, 113-118.

    179. Dark, J., Lewis, D.A. & Zucker, I. Hypoglycemia and torpor in Siberian hamsters. Am. J. Physiol. 1999, 276, R776-R781.

    180. Bae H.H., Mangels R.A., Cho B.S., Dark J., Yellon S.M., & Zucker I. Ventromedial hypothalamic mediation of photoperiodic gonadal responses in male Syrian hamsters. J. Biol. Rhythms, 1999, 14, 391-401.

    181. Hiebert S.M., Thomas, E.M., Lee, T.M., Pelz, K.M., Yellon, S.M.,& Zucker I. Photic entrainment of circannual rhythms in golden-mantled ground squirrels: role of the pineal gland. J. Biol. Rhythms. 2000, 15, 126-134.

    182. Prendergast, B.J., Flynn, A.K., & Zucker, I. Triggering of neuroendocrine refractoriness to short-day patterns of melatonin in Siberian hamsters. J. Neuroendocrinol., 2000 12, 303-310.

    183. Prendergast, B.J., Gorman, M.R., & Zucker, I. Establishment and persistence of photoperiodic memory in hamsters. Proc. Natl. Acad. Sci. USA. 2000, 97, 5586-5591.

    184. Flynn, A.K., Freeman, D.A., Zucker, I., & Prendergast, B.J. Testicular development in Siberian hamsters depends on frequency and pattern of melatonin signals. Am J Physiol. 2000, 279, R1182-R1189.

    185. Freeman, D.A., & Zucker, I. Temperature-independence of circannual variations in circadian rhythms of golden-mantled ground squirrels. J. Biol. Rhythms 2000, 15, 336-343.

    186. Bae, H. H., Stamper, J.L., Heydorn, E.C., Zucker, I., & Dark, J. Role of area postrema in control of torpor in Siberian hamsters. Am. J, Physiol. 2000, 279, R591-R598.

    187. Larkin, J. E., Freeman, D.A., & Zucker, I. Low ambient temperature accelerates short day responses in Siberian hamsters by altering responsiveness to melatonin. J. Biol. Rhythms, 2001, 16, 76-86.

    188. Kauffman, A.S., Cabrera, A., & Zucker, I. Torpor characteristics and energy requirements of furless Siberian hamsters. Physiol. Biochem. Zool. 2001, 74, 876-884.

    189. Gorman, M.R., Goldman, B,D., & Zucker, I. Mammalian photoperiodism. In, Handbook of Behavioral Neurobiology., vol. 12: Circadian Clocks, J. Takahashi, F.W. Turek and R.Y. Moore (eds.), Kluwer Academic/Plenum, N.Y., pp. 481-508.

    190. Zucker, I. Circannual rhythms: mammals. In, Handbook of Behavioral Neurobiology,vol. 12: Circadian Clocks, J. Takahashi, F.W. Turek and R.Y. Moore (eds.), Kluwer Academic/Plenum, N.Y., 2001, pp. 509-528.

    191. Freeman, D. A., & Zucker, I. Refractoriness to melatonin occurs independently at multiple brain sites in Siberian hamsters. Proc. Natl. Acad. Sci. 2001, 98, 6447-6452.

    192. Kauffman, A.S., Cabrera, A., & Zucker, I. Energy intake and fur in summer- and winter-acclimated Siberian hamsters (Phodopus sungorus). Am. J. Physiol. 2001, 281, R519-R527.

    193. Larkin, J. E., Jones, J., & Zucker, I. Temperature dependence of gonadal regression in Syrian hamsters exposed to short day lengths. Am.J. Physiol. 2002, 282, R744-R752.

    194. Ruby, N. F., Dark, J., Burns, D. E., Heller, H.C. & Zucker, I. The suprachiasmatic nucleus is essential for circadian body temperature rhythms in hibernating ground squirrels. J. Neurosci. 2002, 22, 357-364.

    195. Lewis, D., Freeman, D. A., Dark, J., Wynne?Edwards, K. E., & Zucker, I. Photoperiodic control of oestrous cycles in Syrian hamsters: Mediation by the mediobasal hypothalamus. J. Neuroendocrinol. 2002, 14, 294-299.

    196. Prendergast, B. J., Freeman, D. A., Zucker, I., & Nelson, R. J. Periodic arousal from hibernation is necessary for initiation of immune responses in ground squirrels. Am. J. Physiol. 2002, 282, R1054-R1062.

    197. Prendergast, B.J., Nelson, R.J., & Zucker, I. Mammalian seasonal rhythms: Behavior and neuroendocrine substrates. In, Hormones Brain and Behavior, D.W. Pfaff et al. (Eds.), Elsevier Science Press , San Diego, 2002, vol. 2, pp.93-156.

    198. Kauffman, A.S. & Zucker, I. Testicular recrudescence in intermediate day lengths reflects loss of photoperiodic memory in Siberian hamsters. J. Biol. Rhythms. 2002, 17:345-352.

    199. Park, J. H., Spencer, E.M., Place, N.J., Jordan, C.L., & Zucker, I. Seasonal control of penile development of Siberian hamsters (Phodopus sungorus) by daylength and testicular hormones. Reproduction. 2003, 125:397-407.

    200. Kauffman, A.S., Freeman, D. A., & Zucker, I. Termination of neuroendocrine refractoriness to melatonin in Siberian hamsters (Phodopus sungorus). J Neuroendocr. 2003, 15:191-196.

    201. Larkin, J.E., Yellon, S.M. & Zucker, I. Melatonin production accompanies arousal from torpor in Siberian hamsters. Physiol. Biochem. Zool. 2003, 76:577-585.

    202. Kauffman, A.S., Paul, M.J., Butler, M.P. & Zucker, I. Huddling, locomotor, and nest-building behaviors of furred and furless Siberian hamsters. Physiol. Behav. 2003, 79:247-256.

    203. Bae, H.H., Larkin, J.E. & Zucker, I. Juvenile Siberian hamsters display torpor and modified locomotor activity and body temperature rhythms in response to reduced food availability. Physiol. Biochem. Zool. 2003, 76: 858-867.

    204. Paul, M. J., Kauffman, A. S. & Zucker, I. Feeding schedule controls circadian timing of daily torpor in SCN-ablated Siberian hamsters. J. Biol. Rhythms. 2004,19: 226-237.

    205. Park, J.H., Takasu, N., Alvarez, M.I., Clark, K., Aimaq, R. & Zucker, I. Long-term persistence of male copulatory behavior in castrated and photo-inhibited Siberian hamsters. Horm. Behav. 2004,45:214-221

    206. Kauffman, A.S, Paul, M. J. & Zucker, I. Increased heat loss affects hibernation in golden-mantled ground squirrels. Am J Physiol. 2004, 287:R167-R173

    207. Place, N.J., Tuthill, C.R., Schoomer, E.E., Tramontin, A.D. & Zucker, I. Short Day Lengths Delay Reproductive Aging. Biol. Reprod. 2004, 71:987-992

    208. Park, J.H., Paul, M.J., Butler, M.P. & Zucker, I. Binocular interactions in the entrainment and phase shifting of locomotor activity rhythms in Syrian hamsters. J. Biol. Rhythms 2005, 20:49-59.

    209. Tuthill, C.R., Freeman, D.A., Butler, M.P., Chinn, T., Park, J.H. & Zucker I. Perinatal influences of melatonin on testicular development and photoperiodic memory in Siberian hamsters. J Neuroendocrin. 2005, 17:483-488.

    210. Nunes, S., Pelz, K.M., Muecke, E., Zucker, I. & Holkamp, K. Plasma Glucocorticoid concentrations and Body Mass in Ground Squirrels. Seasonal: Variation and Circannual Organization. Gen. Comp. Endocrin., in press.
 
Irving Zucker | Department of Psychology | 3129 Tolman Hall
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