John C Wingfield

Summary

Affiliation: University of California
Country: USA

Publications

  1. doi request reprint The presence of water influences reproductive function in the song sparrow (Melospiza melodia morphna)
    John C Wingfield
    Department of Biology, University of Washington, Seattle, WA 98195, USA
    Gen Comp Endocrinol 178:485-93. 2012
  2. doi request reprint Endocrine disruption in the context of life cycles: perception and transduction of environmental cues
    John C Wingfield
    Department of Neurobiology, Physiology and Behavior, University of California, One Shields Avenue, Davis, CA 95616, USA
    Gen Comp Endocrinol 163:92-6. 2009
  3. doi request reprint Comparative endocrinology, environment and global change
    John C Wingfield
    Department of Neurobiology, Physiology and Behavior, University of California, One Shields Avenue, Davis, CA 95616, USA
    Gen Comp Endocrinol 157:207-16. 2008
  4. ncbi request reprint Seasonal gonadal recrudescence in song sparrows: response to temperature cues
    Nicole Perfito
    University of Washington, Department of Zoology, Seattle, WA 98195, USA
    Gen Comp Endocrinol 143:121-8. 2005
  5. doi request reprint Immune function in an avian brood parasite and its nonparasitic relative
    Loren Merrill
    Department of Ecology, Evolution, and Marine Biology, University of California, Santa Barbara, CA 93106, USA
    Physiol Biochem Zool 86:61-72. 2013
  6. ncbi request reprint A phylogenetically controlled test of hypotheses for behavioral insensitivity to testosterone in birds
    Sharon E Lynn
    Department of Biology, The College of Wooster, 931 College Mall, Wooster, OH 44691, USA
    Horm Behav 47:170-7. 2005
  7. ncbi request reprint Combined effects of DHEA and fadrozole on aggression and neural VIP immunoreactivity in the non-breeding male song sparrow
    Douglas W Wacker
    Graduate Program in Neurobiology and Behavior, Department of Biology, Box 351800, University of Washington, Seattle, WA 98195, USA
    Horm Behav 53:287-94. 2008
  8. doi request reprint Disentangling the effects of environment and life-history stage on corticosterone modulation in Costa Rican rufous-collared sparrows, Zonotrichia capensis costaricensis
    D Shallin Busch
    Department of Biology, University of Washington, Seattle, Washington 98195 1800, USA
    Physiol Biochem Zool 83:87-96. 2010
  9. doi request reprint Testosterone treatment diminishes sickness behavior in male songbirds
    Noah T Ashley
    Department of Biology, University of Washington, Seattle, WA 98195 1800, USA
    Horm Behav 56:169-76. 2009
  10. ncbi request reprint Increased sensitivity of the serotonergic system during the breeding season in free-living American tree sparrows
    Todd S Sperry
    Department of Biology, University of Washington, Box 351800, Seattle, WA 98195, USA
    Behav Brain Res 157:119-26. 2005

Detail Information

Publications91

  1. doi request reprint The presence of water influences reproductive function in the song sparrow (Melospiza melodia morphna)
    John C Wingfield
    Department of Biology, University of Washington, Seattle, WA 98195, USA
    Gen Comp Endocrinol 178:485-93. 2012
    ..Taken together these novel data indicate that presence and access to open water could be an important environmental cue for song sparrows in western Washington State. Implications for global climate change and droughts are suggested...
  2. doi request reprint Endocrine disruption in the context of life cycles: perception and transduction of environmental cues
    John C Wingfield
    Department of Neurobiology, Physiology and Behavior, University of California, One Shields Avenue, Davis, CA 95616, USA
    Gen Comp Endocrinol 163:92-6. 2009
    ..This may introduce a new perspective on the effects of environmental endocrine disruptors...
  3. doi request reprint Comparative endocrinology, environment and global change
    John C Wingfield
    Department of Neurobiology, Physiology and Behavior, University of California, One Shields Avenue, Davis, CA 95616, USA
    Gen Comp Endocrinol 157:207-16. 2008
    ..In the face of increasing human disturbance and global climate change there is an urgent need for more integration of ecological, evolutionary and mechanistic studies on stress biology of organisms in their natural world...
  4. ncbi request reprint Seasonal gonadal recrudescence in song sparrows: response to temperature cues
    Nicole Perfito
    University of Washington, Department of Zoology, Seattle, WA 98195, USA
    Gen Comp Endocrinol 143:121-8. 2005
    ..Furthermore, our data suggest that individuals within the same species may rely on different proximate cues for reproductive timing depending on the specific habitat in which they live...
  5. doi request reprint Immune function in an avian brood parasite and its nonparasitic relative
    Loren Merrill
    Department of Ecology, Evolution, and Marine Biology, University of California, Santa Barbara, CA 93106, USA
    Physiol Biochem Zool 86:61-72. 2013
    ....
  6. ncbi request reprint A phylogenetically controlled test of hypotheses for behavioral insensitivity to testosterone in birds
    Sharon E Lynn
    Department of Biology, The College of Wooster, 931 College Mall, Wooster, OH 44691, USA
    Horm Behav 47:170-7. 2005
    ..e., not simply common ancestry) and that the necessity of paternal care in some species may be a strong selective factor driving behavioral insensitivity to T during the parental phase...
  7. ncbi request reprint Combined effects of DHEA and fadrozole on aggression and neural VIP immunoreactivity in the non-breeding male song sparrow
    Douglas W Wacker
    Graduate Program in Neurobiology and Behavior, Department of Biology, Box 351800, University of Washington, Seattle, WA 98195, USA
    Horm Behav 53:287-94. 2008
    ..VIP immunoreactivity (VIP-ir) changed across multiple brain regions with this treatment regimen, most notably in the LSO/VFI subdivision of the lateral septum...
  8. doi request reprint Disentangling the effects of environment and life-history stage on corticosterone modulation in Costa Rican rufous-collared sparrows, Zonotrichia capensis costaricensis
    D Shallin Busch
    Department of Biology, University of Washington, Seattle, Washington 98195 1800, USA
    Physiol Biochem Zool 83:87-96. 2010
    ..Our data indicate that environmental conditions may affect how the HPA axis in birds is modulated during different life-history stages. They also emphasize the importance of studying species with diverse life cycles and seasonality...
  9. doi request reprint Testosterone treatment diminishes sickness behavior in male songbirds
    Noah T Ashley
    Department of Biology, University of Washington, Seattle, WA 98195 1800, USA
    Horm Behav 56:169-76. 2009
    ..The cost of immunosuppression would be manifested in males through an increased susceptibility to disease, which is presumably offset by capitalizing upon limited reproductive opportunities...
  10. ncbi request reprint Increased sensitivity of the serotonergic system during the breeding season in free-living American tree sparrows
    Todd S Sperry
    Department of Biology, University of Washington, Box 351800, Seattle, WA 98195, USA
    Behav Brain Res 157:119-26. 2005
    ..The rapidity of the change in responsiveness suggests a dynamic sensitivity of the serotonergic system...
  11. ncbi request reprint Seasonal modulation of testosterone during breeding of the rufous-collared sparrow (Zonotrichia capensis australis) in Southern Patagonia
    Elizabeth A Addis
    Department of Biology, Gonzaga University, Spokane, Washington 99258 2Department of Biology, University of Washington, Seattle, Washington 98195 3Instituto de Ecologia y Biodiversidad, Departamento de Ciencias Ecologicas, Facultad de Ciencias, Universidad de Chile, Santiago 7800024, Chile 4Department of Neurobiology, Physiology, and Behavior, University of California, Davis, California 95616
    Physiol Biochem Zool 86:782-90. 2013
    ..In contrast, we found that Z. c. australis also exhibit similar aggressive behaviors in early breeding and midbreeding, unlike many birds in the Northern Hemisphere...
  12. ncbi request reprint Reproductive development according to elevation in a seasonally breeding male songbird
    Nicole Perfito
    Department of Zoology, University of Washington, Seattle, WA 98195, USA
    Oecologia 140:201-10. 2004
    ..Therefore, we suggest that an integrated response to cues characteristic of location and elevation account for differences in patterns measured in the field...
  13. pmc Seasonal differences of gene expression profiles in song sparrow (Melospiza melodia) hypothalamus in relation to territorial aggression
    Motoko Mukai
    Department of Neurobiology, Physiology, and Behavior, University of California Davis, Davis, California, United States of America
    PLoS ONE 4:e8182. 2009
    ..Microarrays, spotted with EST cDNA clones of zebra finch, were used to explore gene expression profiles in the hypothalamus after territorial aggression in two different seasons...
  14. doi request reprint Impacts of frequent, acute pulses of corticosterone on condition and behavior of Gambel's white-crowned sparrow (Zonotrichia leucophrys gambelii)
    D Shallin Busch
    Department of Biology, University of Washington, Seattle, USA
    Gen Comp Endocrinol 158:224-33. 2008
    ..These results increase our understanding of the effects of frequent, acute stressors and the development of chronic stress states...
  15. ncbi request reprint Pre-migratory life history stages of juvenile Arctic birds: costs, constraints, and trade-offs
    Frances Bonier
    Department of Biology, University of Washington, Seattle, Washington 98195 1800, USA
    Ecology 88:2729-35. 2007
    ..Our results provide evidence of significant costs, constraints, and trade-offs associated with post-juvenal molt and premigratory fat accumulation in young Arctic birds...
  16. ncbi request reprint Plasticity of the avian song control system in response to localized environmental cues in an equatorial songbird
    Ignacio T Moore
    Department of Biology, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061 0406, USA
    J Neurosci 24:10182-5. 2004
    ..These results demonstrate the sensitivity of the brain and its ability to use a variety of environmental cues to coordinate seasonal plasticity and reproduction...
  17. ncbi request reprint Hormonal, behavioral, and thermoregulatory responses to bacterial lipopolysaccharide in captive and free-living white-crowned sparrows (Zonotrichia leucophrys gambelii)
    Noah T Owen-Ashley
    Department of Biology, University of Washington, Seattle, 98195 1800, USA
    Horm Behav 49:15-29. 2006
    ..These studies highlight immune-endocrine-behavior interrelationships that may proximately mediate life-history tradeoffs between reproduction and defense against pathogens...
  18. ncbi request reprint Role of the low-affinity glucocorticoid receptor in the regulation of behavior and energy metabolism in the migratory red knot Calidris canutus islandica
    Meta M Landys
    Department of Biology, University of Washington, Seattle, WA 98195, USA
    Physiol Biochem Zool 77:658-68. 2004
    ..Energy metabolism (as determined through plasma metabolites) was also unaffected by RU486, possibly because energetic demands experienced by captive birds were low...
  19. ncbi request reprint Effect of estradiol implants on reproductive behavior of female Lapland longspurs (Calcarius lapponicus)
    Kathleen E Hunt
    Department of Biology, University of Washington, Seattle, WA 98195 1800, USA
    Gen Comp Endocrinol 137:248-62. 2004
    ..Further research on effects of estrogens (both exogenous and endogenous) on free-living female birds is needed...
  20. doi request reprint The role of androgen receptors in regulating territorial aggression in male song sparrows
    Todd S Sperry
    Department of Biology, University of Washington, Seattle, 98195, USA
    Horm Behav 57:86-95. 2010
    ..Given that flutamide only affected aggression during the pre-breeding substage and in LD birds, the results suggest that AR dependent control of aggressive behavior changes as song sparrow life history states change...
  21. ncbi request reprint Interactions of gonadotropin-releasing hormone (GnRH) and gonadotropin-inhibitory hormone (GnIH) in birds and mammals
    George E Bentley
    Department of Integrative Biology, University of California, Berkeley, California 94720, USA
    J Exp Zool A Comp Exp Biol 305:807-14. 2006
    ....
  22. ncbi request reprint Plasma corticosterone increases during migratory restlessness in the captive white-crowned sparrow Zonotrichia leucophrys gambelli
    Meta M Landys
    Department of Biology, University of Washington, Seattle, WA 98195, USA
    Horm Behav 46:574-81. 2004
    ..In fact, corticosterone may play a regulatory role, because it shows a trend to increase already before night-time activity...
  23. ncbi request reprint Japanese quail selected for high plasma corticosterone response deposit high levels of corticosterone in their eggs
    Lisa S Hayward
    Department of Biology, Box 351800, University of Washington, Seattle, WA, 98195, USA
    Physiol Biochem Zool 78:1026-31. 2005
    ....
  24. ncbi request reprint Habituation of adult Magellanic penguins to human visitation as expressed through behavior and corticosterone secretion
    Brian G Walker
    Department of Biology, University of Washington, Box 351800, Seattle, WA 98195, USA
    Conserv Biol 20:146-54. 2006
    ..The physiological differences between tourist-visited and undisturbed groups of Magellanic Penguins emphasize the importance of monitoring the effects of anthropogenic disturbances on wildlife at multiple levels...
  25. ncbi request reprint Age and food deprivation affects expression of the glucocorticosteroid stress response in Magellanic penguin (Spheniscus magellanicus) chicks
    Brian G Walker
    Department of Biology, Box 351800, University of Washington, Seattle, WA, 98195, USA
    Physiol Biochem Zool 78:78-89. 2005
    ..However, in cases of extended chronic stress, down-regulation may ensue, thus avoiding the negative effects of chronically elevated levels of corticosterone...
  26. ncbi request reprint Seasonal modulation of sickness behavior in free-living northwestern song sparrows (Melospiza melodia morphna)
    Noah T Owen-Ashley
    Department of Biology, Box 351800, University of Washington, Seattle, WA 98195 1800, USA
    J Exp Biol 209:3062-70. 2006
    ..Ultimately, suppression of sickness behavior may represent an allocation strategy to balance current reproductive opportunities with the life-history costs of self-defense...
  27. doi request reprint Seasonal and social modulation of testosterone in Costa Rican rufous-collared sparrows (Zonotrichia capensis costaricensis)
    Elizabeth A Addis
    Department of Biology, University of Washington, Seattle, WA 98195, USA
    Gen Comp Endocrinol 166:581-9. 2010
    ..Males did not socially modulate testosterone in any season. Aggressive behaviors expressed during STIs did not differ among seasons with the exception that males sang fewer songs during the rainy season...
  28. doi request reprint Breaking down seasonality: androgen modulation and stress response in a highly stable environment
    Paulina L González-Gómez
    Department of Neurobiology, Physiology, and Behavior, University of California Davis, 1 Shields Avenue, CA 95616, USA
    Gen Comp Endocrinol 191:1-12. 2013
    ....
  29. pmc Urban birds have broader environmental tolerance
    Frances Bonier
    Department of Biology, University of Washington, Box 351800, Seattle, WA 98195 1800, USA
    Biol Lett 3:670-3. 2007
    ..The mechanisms mediating such environmental tolerance warrant further investigation, but probably include greater behavioural, physiological and ecological flexibility...
  30. pmc Modulation of the hypothalamic-pituitary-adrenal axis of an Arctic-breeding polygynandrous songbird, the Smith's longspur, Calcarius pictus
    Simone L Meddle
    Department of Zoology, Box 351800, University of Washington, Seattle, WA 98195, USA
    Proc Biol Sci 270:1849-56. 2003
    ..Modulation of the HPA axis in this species in relation to life-history stage, lifetime reproductive success and the polygynandrous mating system is discussed...
  31. pmc Metabolic profile of long-distance migratory flight and stopover in a shorebird
    Meta M Landys
    Department of Biology, University of Washington, Box 351800, Seattle, WA 98195, USA
    Proc Biol Sci 272:295-302. 2005
    ..Finally, elevations in plasma uric acid suggest that protein breakdown contributes to the support of long-distance movement, to possibly maintain citric acid cycle intermediates, gluconeogenesis and/or water balance...
  32. ncbi request reprint Ecological factors affecting the adrenocortical response to stress in chestnut-collared and McCown's longspurs (Calcarius ornatus, Calcarius mccownii)
    Sharon E Lynn
    Department of Biology, University of Washington, Box 351800, Seattle, WA 98195, USA
    Physiol Biochem Zool 76:566-76. 2003
    ..We suggest that an attenuated stress response may relate to the severity of the breeding environment and a low likelihood of successful renesting, since these variables are common to both arctic and grassland habitats...
  33. doi request reprint Dissociation of testosterone and aggressive behavior during the breeding season in male chestnut-collared longspurs, Calcarius ornatus
    Sharon E Lynn
    The College of Wooster, Department of Biology, Wooster, OH 44691, USA
    Gen Comp Endocrinol 156:181-9. 2008
    ..We suggest that high plasma testosterone may be more important in eliciting and maintaining sexual behavior than aggressive behavior in this species...
  34. doi request reprint Modulation of androgens in southern hemisphere temperate breeding sparrows (Zonotrichia capensis): an altitudinal comparison
    Elizabeth A Addis
    Department of Biology, University of Washington, Seattle, WA 98195, USA
    Horm Behav 60:195-201. 2011
    ..c. chilensis in the Southern Hemisphere are similar to congeners in the temperate Northern Hemisphere, but those of the lowland population of Z. c. chilensis are not, and are more similar to conspecifics breeding in the tropics...
  35. doi request reprint Latitudinal variation of immune defense and sickness behavior in the white-crowned sparrow (Zonotrichia leucophrys)
    Noah T Owen-Ashley
    Department of Biology, University of Washington, Seattle, WA 98195 1800, USA
    Brain Behav Immun 22:614-25. 2008
    ..However, these effects were influenced by photoperiodic changes in body condition. In conclusion, we find evidence for genetic control of immune responses across latitude, but no support for environmental (photoperiodic) regulation...
  36. ncbi request reprint The effects of combined aromatase inhibitor and anti-androgen on male territorial aggression in a tropical population of rufous-collared sparrows, Zonotrichia capensis
    Ignacio T Moore
    Department of Biology, Box 351800, University of Washington, Seattle, WA 98195, USA
    Gen Comp Endocrinol 135:223-9. 2004
    ..We conclude that pharmacologically inhibiting testosterone during the breeding season does not affect territorial aggression in these birds...
  37. doi request reprint Influence of proximity to a geographical range limit on the physiology of a tropical bird
    D Shallin Busch
    Department of Biology, University of Washington, Box 351800, Seattle, WA 98195, USA
    J Anim Ecol 80:640-9. 2011
    ..Highly specialized species, such as birds of the rain forest understory, may be especially susceptible to environmental variation associated with changing climatic conditions...
  38. doi request reprint Effects of repeated, short-term, corticosterone administration on the hypothalamo-pituitary-adrenal axis of the white-crowned sparrow (Zonotrichia leucophrys gambelii)
    D Shallin Busch
    Department of Biology, University of Washington, Seattle, USA
    Gen Comp Endocrinol 158:211-23. 2008
    ..CORT treatment did not alter adrenal size, adrenal response to ACTH, or hepatic CORT metabolism...
  39. ncbi request reprint Effects of temperature on photoperiodically induced reproductive development, circulating plasma luteinizing hormone and thyroid hormones, body mass, fat deposition and molt in mountain white-crowned sparrows, Zonotrichia leucophrys oriantha
    John C Wingfield
    Department of Zoology, Box 351800, University of Washington, Seattle, WA 98195, USA
    Gen Comp Endocrinol 131:143-58. 2003
    ..These results demonstrate that ambient temperature significantly affected photoperiodically induced gonadal development and regression in these birds. The endocrine mechanisms underlying these effects require further study...
  40. ncbi request reprint Corticosterone inhibits feather growth: potential mechanism explaining seasonal down regulation of corticosterone during molt
    L Michael Romero
    Department of Biology, Tufts University, Medford, MA 02155, USA
    Comp Biochem Physiol A Mol Integr Physiol 142:65-73. 2005
    ..The results suggest a tradeoff; a complete set of new feathers may be more important to the survival of a bird than the ability of CORT to respond maximally to a stressor...
  41. doi request reprint Temporal predictability in food availability: effects upon the reproductive axis in Scrub-Jays
    Eli S Bridge
    Department of Biology, University of Memphis, Memphis, Tennessee, USA
    J Exp Zool A Ecol Genet Physiol 311:35-44. 2009
    ..Our findings offer weak support for the hypothesis that an unpredictable food supply will delay the onset of reproduction; however, the artificial lab environment may limit the application of these findings to free-living populations...
  42. ncbi request reprint Androgens and the immunocompetence handicap hypothesis: unraveling direct and indirect pathways of immunosuppression in song sparrows
    Noah T Owen-Ashley
    Department of Biology, University of Washington, Seattle, Washington 98195, USA
    Am Nat 164:490-505. 2004
    ....
  43. doi request reprint Variation in circulating corticosterone levels is associated with altitudinal range expansion in a passerine bird
    Elizabeth A Addis
    Department of Biology, University of Washington, Seattle, WA 98105, USA
    Oecologia 167:369-78. 2011
    ..These results suggest an importance of modulation of hormonal mechanisms in facilitating breeding in high altitude environments, and that variation in these mechanisms may be associated with facilitating altitudinal range expansion...
  44. ncbi request reprint Corticosterone is not correlated with nest departure in snowy owl chicks (Nyctea scandiaca)
    L Michael Romero
    Department of Biology, Tufts University of Medford, MA 02155, USA
    Gen Comp Endocrinol 149:119-23. 2006
    ..Brood size was not correlated with age of nest departure or individual corticosterone concentrations. These data indicate that it is unlikely that corticosterone plays a role in triggering nest departure in snowy owl chicks...
  45. ncbi request reprint Historical contributions of research on birds to behavioral neuroendocrinology
    John C Wingfield
    Department of Biology, Box 351800, University of Washington, Seattle, WA 98195, USA
    Horm Behav 48:395-402. 2005
    ..Molecular genetics in avian systems is advanced providing us with phylogenetic perspective allowing the comparisons of different avian populations that provide valuable models for integrative research...
  46. pmc Introduction. Integration of ecology and endocrinology in avian reproduction: a new synthesis
    John C Wingfield
    University of California, One Shields Avenue, Davis, CA 95616, USA
    Philos Trans R Soc Lond B Biol Sci 363:1581-8. 2008
    ..This framework of topics will ultimately apply to all taxa because the principles involved are universal and hopefully will have direct application to programmes integrating organisms and genes throughout biological sciences...
  47. ncbi request reprint Sex differences in the organizational effects of corticosterone in the egg yolk of quail
    Lisa S Hayward
    Department of Biology, University of Washington, Seattle, WA 98195, USA
    Gen Comp Endocrinol 146:144-8. 2006
    ..Our results are consistent with others that demonstrate sex differences in the organizational effects of glucocorticoids. The mechanisms and adaptive value of such differences have yet to be determined...
  48. ncbi request reprint The low-affinity glucocorticoid receptor regulates feeding and lipid breakdown in the migratory Gambel's white-crowned sparrow Zonotrichia leucophrys gambelii
    Meta M Landys
    Department of Biology, University of Washington, Box 351800, Seattle, WA 98195, USA
    J Exp Biol 207:143-54. 2004
    ..g. during migratory flight...
  49. ncbi request reprint Seasonal glucocorticoid responses to capture in wild free-living mammals
    L Michael Romero
    Department of Biology, Tufts University, Medford, MA 02155, USA
    Am J Physiol Regul Integr Comp Physiol 294:R614-22. 2008
    ....
  50. ncbi request reprint A continuing saga: the role of testosterone in aggression
    John C Wingfield
    Department of Biology, Box 351800, University of Washington, Seattle, WA 98195, USA
    Horm Behav 48:253-5; discussion 256-8. 2005
  51. doi request reprint Immunocytochemical study of rhodopsin-containing putative encephalic photoreceptors in house sparrow, Passer domesticus
    Gang Wang
    Department of Biology, University of Washington, Seattle, WA 98195, USA
    Gen Comp Endocrinol 170:589-96. 2011
    ..The results indicate daily changes of EPs in the IN and ME, suggesting a role of EPs in the orchestration of photoperiodic gonadal recrudesence...
  52. ncbi request reprint The impact of exposure to a novel female on symptoms of infection and on the reproductive axis
    Patricia Castro Lopes
    Department of Integrative Biology, University of California, Berkeley, Calif, USA
    Neuroimmunomodulation 20:348-60. 2013
    ..Here, we tested whether the presentation of a novel female to males suffering from a simulated infection could impact the behavioral effects of sickness, the reproductive axis, or both...
  53. doi request reprint Sex-specific variation in brown-headed cowbird immunity following acute stress: a mechanistic approach
    Loren Merrill
    Department of Ecology, Evolution and Marine Biology, University of California, Santa Barbara, Santa Barbara, CA 93106, USA
    Oecologia 170:25-38. 2012
    ..Female cowbirds may modulate their stress response as an adaptive life-history strategy for maximizing current reproduction...
  54. ncbi request reprint Adaptive social and maternal induction of antipredator dorsal patterns in a lizard with alternative social strategies
    Lesley T Lancaster
    Department of Ecology and Evolutionary Biology, University of California, Santa Cruz, CA 95064, USA
    Ecol Lett 10:798-808. 2007
    ..All maternally induced types had high fitness in the wild. These results illustrate a (previously undescribed) mechanism for females to simultaneously resolve differing correlational selection pressures on different progeny...
  55. ncbi request reprint Evidence for a novel gonadotropin-releasing hormone in hypothalamic and forebrain areas in songbirds
    George E Bentley
    Department of Biology, University of Washington, Seattle, WA 98195, USA
    Brain Behav Evol 63:34-46. 2004
    ....
  56. ncbi request reprint Rapid inhibition of female sexual behavior by gonadotropin-inhibitory hormone (GnIH)
    George E Bentley
    Department of Integrative Biology, University of California, Berkeley, 94720, USA
    Horm Behav 49:550-5. 2006
    ..These data demonstrate direct effects of GnIH upon reproductive physiology and behavior, possibly via separate actions on two forms of GnRH...
  57. ncbi request reprint Steroid hormone interrelationships with territorial aggression in an Arctic-breeding songbird, Gambel's white-crowned sparrow, Zonotrichia leucophrys gambelii
    Simone L Meddle
    Department of Zoology, University of Washington, Seattle 98195, USA
    Horm Behav 42:212-21. 2002
    ..Z. l. gambelii retain sensitivity to corticosterone levels that may occur naturally in response to environmental perturbations resulting in suppression of territorial behavior...
  58. ncbi request reprint Maternal corticosterone is transferred to avian yolk and may alter offspring growth and adult phenotype
    Lisa S Hayward
    Department of Zoology, University of Washington, Seattle, WA 98195, USA
    Gen Comp Endocrinol 135:365-71. 2004
    ..These results suggest that stress experienced by a laying bird has significant effects on offspring development and adult phenotype, possibly mediated by the transfer of maternal corticosterone to yolk...
  59. ncbi request reprint Latitudinal variation in plasma testosterone levels in birds of the genus Zonotrichia
    Ignacio T Moore
    Department of Zoology, Box 351800, University of Washington, Seattle, WA 98195, USA
    Gen Comp Endocrinol 129:13-9. 2002
    ..These data suggest that latitudinal clines in plasma testosterone levels in Zonotrichia do not follow previously described patterns and that tropical birds can have levels of testosterone similar to northern latitude species...
  60. ncbi request reprint Androgens and estrogens induce seasonal-like growth of song nuclei in the adult songbird brain
    Anthony D Tramontin
    Department of Neurosurgery Research, University of California, San Francisco, California 94143, USA
    J Neurobiol 57:130-40. 2003
    ..These data also suggest that T's effects on seasonal song nucleus growth may depend, in part, upon enzymatic conversion of T to bioactive metabolites...
  61. pmc Organization of vertebrate annual cycles: implications for control mechanisms
    John C Wingfield
    Department of Biology, University of Washington, Box 351800, Seattle, WA 98195, USA
    Philos Trans R Soc Lond B Biol Sci 363:425-41. 2008
    ..Theoretical ways by which this can be done, and the implications for neuroendocrine and endocrine control mechanisms are discussed. Twelve testable hypotheses are posed that relate directly to control mechanisms...
  62. ncbi request reprint Avipox sp. in a colony of gray-crowned rosy finches (Leucosticte tephrocotis)
    Renee R Hukkanen
    Department of Comparative Medicine, University of Washington, Box 357190, Seattle, Washington 98195, USA
    Comp Med 53:548-52. 2003
    ..Similar epornitics may be prevented through indoor, species-specific housing, and quarantine. Vaccination and antiparasitic treatment may reduce the risk of disease spread...
  63. ncbi request reprint Short-term fasting affects locomotor activity, corticosterone, and corticosterone binding globulin in a migratory songbird
    Sharon E Lynn
    Department of Zoology, University of Washington, Seattle, WA 98195, USA
    Horm Behav 43:150-7. 2003
    ..This change was sufficient to significantly elevate free CORT levels in fasted birds relative to ad libitum food conditions, despite the lack of difference in total CORT levels...
  64. ncbi request reprint Searching for the physiological mechanism of density dependence: does corticosterone regulate tadpole responses to density?
    Lisa K Belden
    Department of Biology, Pennsylvania State University, University Park, Pennsylvania 16802, USA
    Physiol Biochem Zool 80:444-51. 2007
    ..We suggest that the physiological response to density may vary across the range of natural densities and that the role of corticosterone may be limited to periods of extreme high density, such as during pond-drying events...
  65. ncbi request reprint Arctic spring: hormone-behavior interactions in a severe environment
    John C Wingfield
    Department of Zoology, Box 351800, University of Washington, Seattle, WA 98195, USA
    Comp Biochem Physiol B Biochem Mol Biol 132:275-86. 2002
    ..A combination of these two hormone-behavior interrelationships can form important components of the proximate mechanisms by which birds, and other vertebrates, breed successfully in a severe and often capricious environment...
  66. ncbi request reprint Changes in plasma corticosterone and adrenocortical response to stress during the breeding cycle in high altitude flycatchers
    Maria Elena Pereyra
    Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ 86011, USA
    Gen Comp Endocrinol 130:222-31. 2003
    ....
  67. ncbi request reprint Baseline and stress-induced plasma corticosterone during long-distance migration in the bar-tailed godwit, Limosa lapponica
    Meta M Landys-Ciannelli
    Department of Zoology, Box 351800, University of Washington, Seattle, WA 98195, USA
    Physiol Biochem Zool 75:101-10. 2002
    ..Therefore, the normal course of migration may be typified by corticosterone concentrations that are lower than those associated with stressful and life-threatening episodes...
  68. ncbi request reprint Glucocorticoids and parental hyperphagia in ring doves (Streptopelia risoria)
    Kristin A Koch
    Department of Biological Sciences, University of Wisconsin Milwaukee, Milwaukee, Wisconsin 5320l, USA
    Horm Behav 41:9-21. 2002
    ..They also suggest that these orexigenic effects are mediated in part by CNS binding sites that resemble mammalian glucocorticoid receptors...
  69. ncbi request reprint The effect of photoperiod on adrenocortical stress response in mountain chickadees (Poecile gambeli)
    Vladimir V Pravosudov
    Section of Neurobiology, Physiology, and Behavior, University of California Davis, Davis, CA 95616, USA
    Gen Comp Endocrinol 126:242-8. 2002
    ..Our results suggest that factors other than photoperiod are responsible for the observed seasonal changes in baseline levels of corticosterone, whereas photoperiod is directly involved in regulation of adrenocortical stress response...
  70. ncbi request reprint Baseline and stress-induced levels of corticosterone during different life cycle substages in a shorebird on the high arctic breeding grounds
    Jeroen Reneerkens
    Netherlands Institute for Sea Research NIOZ, P O Box 59, 1790 AB Den Burg, Texel, The Netherlands
    Physiol Biochem Zool 75:200-8. 2002
    ....
  71. ncbi request reprint Hypothalamic GnRH-I and its precursor during photorefractoriness onset in free-living male Dark-eyed Juncos (Junco hyemalis) of different year classes
    Simone L Meddle
    Laboratory of Neuroendocrinology, Centre for Integrative Physiology, School of Veterinary Biomedical Sciences, Royal Dick School of Veterinary Medicine, Summerhall, Edinburgh EH9 1QH, UK
    Gen Comp Endocrinol 145:148-56. 2006
    ..Instead, the regulation of GnRH-I secretion by non-photoperiodic factors may determine photorefractoriness onset...
  72. ncbi request reprint No latitudinal differences in adrenocortical stress response in wintering black-capped chickadees (Poecile atricapilla)
    Vladimir V Pravosudov
    Department of Psychology, University of California Davis, Young Hall, CA 95616 8519, USA
    Comp Biochem Physiol A Mol Integr Physiol 137:95-103. 2004
    ....
  73. pmc Balancing food and predator pressure induces chronic stress in songbirds
    Michael Clinchy
    Department of Biology, University of Western Ontario, London, Ontario N6A 5B7, Canada
    Proc Biol Sci 271:2473-9. 2004
    ....
  74. ncbi request reprint Testosterone and group size in cliff swallows: testing the "challenge hypothesis" in a colonial bird
    Linda C Smith
    The Richard Stockton College of New Jersey, Pomona, NJ 08240, United States
    Horm Behav 47:76-82. 2005
    ..The results support the predictions of the challenge hypothesis...
  75. ncbi request reprint Actions of glucocorticoids at a seasonal baseline as compared to stress-related levels in the regulation of periodic life processes
    Meta M Landys
    Department of Biology, University of Oslo, P O Box 1066, Blindern, N 0316 Oslo, Norway
    Gen Comp Endocrinol 148:132-49. 2006
    ....
  76. ncbi request reprint Photoperiod-independent changes in immunoreactive brain gonadotropin-releasing hormone (GnRH) in a free-living, tropical bird
    Ignacio T Moore
    Department of Biological Sciences, Virginia Tech, Blacksburg, VA 24061, USA
    Brain Behav Evol 68:37-44. 2006
    ....
  77. ncbi request reprint Stress responses in tropical sparrows: comparing tropical and temperate Zonotrichia
    Haruka Wada
    Integrative Biology, 1 University Station, University of Texas, Austin, 78712, USA
    Physiol Biochem Zool 79:784-92. 2006
    ..The contrast between equatorial and northern congeners indicates factors such as breeding environment and life-history strategy may play important roles in shaping stress response in these species...
  78. ncbi request reprint Nonbreeding season pairing behavior and the annual cycle of testosterone in male and female downy woodpeckers, Picoides pubescens
    James S Kellam
    Department of Biological Sciences, Purdue University, West Lafayette, IN 47907, USA
    Horm Behav 46:703-14. 2004
    ..We discuss this finding and further relate the annual cycle of T in both males and females to behaviors that appear to facilitate mate choice and retention of the pair bond during conspecific challenge...
  79. ncbi request reprint The adrenocortical response of tufted puffin chicks to nutritional deficits
    Alexander S Kitaysky
    Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, AK 99775, USA
    Horm Behav 47:606-19. 2005
    ..This physiological adaptation may allow a chick to extend its development in the nest, while eluding detrimental effects of chronic cort elevation...
  80. ncbi request reprint Distinguishing seasonal androgen responses from male-male androgen responsiveness-revisiting the Challenge Hypothesis
    Wolfgang Goymann
    Department of Biological Rhythms and Behaviour and Department for Behavioural Neurobiology, Max Planck Institute for Ornithology, Von der Tann Str 7, D 82346 Andechs, Germany
    Horm Behav 51:463-76. 2007
    ..Through such studies, we can begin to better understand how social and environmental factors may lead to differences in androgen responses...
  81. doi request reprint Seasonal changes in adrenocortical responses to acute stress in Eurasian tree sparrow (Passer montanus) on the Tibetan Plateau: comparison with house sparrow (P. domesticus) in North America and with the migratory P. domesticus in Qinghai Province
    Dongming Li
    Institute of Zoology, Chinese Academy of Sciences, Datunlu, Chaoyang District, Beijing 100101, China
    Gen Comp Endocrinol 158:47-53. 2008
    ..These invasive human commensals may have a unique HPA axis response to different environments because they can take advantage of human food sources and shelter (i.e. buildings)...
  82. ncbi request reprint Prolactin-induced parental hyperphagia in ring doves: are glucocorticoids involved?
    Kristin A Koch
    Department of Biological Sciences, University of Wisconsin Milwaukee, Milwaukee, WI 5320l, USA
    Horm Behav 46:498-505. 2004
    ..These findings suggest that elevated corticosterone titers in blood may contribute to the hyperphagia observed in response to prolactin, but corticosterone signaling through a mammalian-type glucocorticoid receptor is not essential...
  83. ncbi request reprint Do stable isotopes reflect nutritional stress? Results from a laboratory experiment on song sparrows
    Bethany Kempster
    Department of Biology, University of Western Ontario, London, ON, N6A 5B7, Canada
    Oecologia 151:365-71. 2007
    ....
  84. ncbi request reprint Dehydroepiandrosterone (DHEA) increases territorial song and the size of an associated brain region in a male songbird
    Kiran K Soma
    Department of Zoology, University of Washington, Seattle, Washington 98195, USA
    Horm Behav 41:203-12. 2002
    ..The data are consistent with the hypothesis that DHEA regulates territorial behavior, especially in the nonbreeding season, when plasma T is basal...
  85. pmc A mechanistic link between chick diet and decline in seabirds?
    Alexander S Kitaysky
    Department of Biology and Wildlife, Institute of Arctic Biology, University of Alaska Fairbanks, Irving 311, Fairbanks, AK 99775, USA
    Proc Biol Sci 273:445-50. 2006
    ..We conclude that lipid-poor diets during development affect the quality of young seabirds, which is likely to result in their increased mortality and low recruitment...
  86. pmc Evidence for a navigational map stretching across the continental U.S. in a migratory songbird
    Kasper Thorup
    Department of Ecology and Evolutionary Biology, Princeton University, Princeton, NJ 08544, USA
    Proc Natl Acad Sci U S A 104:18115-9. 2007
    ..The juveniles with less experience rely on their innate program to find their distant wintering areas and continue to migrate in the innate direction without correcting for displacement...
  87. ncbi request reprint Brain aromatase, 5 alpha-reductase, and 5 beta-reductase change seasonally in wild male song sparrows: relationship to aggressive and sexual behavior
    Kiran K Soma
    Department of Physiological Science and Laboratory of Neuroendocrinology of the Brain Research Institute, University of California at Los Angeles, Los Angeles, California 90095, USA
    J Neurobiol 56:209-21. 2003
    ..These data highlight the relevance of neural steroid metabolism to the expression of natural behaviors by free-living animals...
  88. ncbi request reprint The concept of allostasis in biology and biomedicine
    Bruce S McEwen
    Laboratory of Neuroendocrinology, The Rockefeller University, Box 165, 1230 York Avenue, New York, NY 10021, USA
    Horm Behav 43:2-15. 2003
    ..If allostatic load is chronically high, then pathologies develop. Type 2 allostatic overload does not trigger an escape response, and can only be counteracted through learning and changes in the social structure...
  89. ncbi request reprint Mode of action and functional significance of avian gonadotropin-inhibitory hormone (GnIH): a review
    Kazuyoshi Tsutsui
    Laboratory of Brain Science, Faculty of Integrated Arts and Sciences, Hiroshima University, and Integrative Brain Science Center at Hiroshima University, Higashi hiroshima 739 8521, Japan
    J Exp Zool A Comp Exp Biol 305:801-6. 2006
    ..Thus melatonin appears to act directly on GnIH neurons via its receptor to induce GnIH expression. Based on these studies, GnIH is likely an important neuropeptide for the regulation of avian reproduction...
  90. ncbi request reprint The Darwinian concept of stress: benefits of allostasis and costs of allostatic load and the trade-offs in health and disease
    S Mechiel Korte
    Animal Sciences Group, Wageningen University and Research Centre, Box 65, Edelhertweg 15, 8200 AB Lelystad, The Netherlands
    Neurosci Biobehav Rev 29:3-38. 2005
    ..In contrast, Doves, due to the greater release of mediators of allostasis (surplus), are more susceptible to anxiety disorders, metabolic syndromes, melancholic depression, psychotic states and infection...
  91. ncbi request reprint Testosterone in tropical birds: effects of environmental and social factors
    Wolfgang Goymann
    Max Planck Institute for Ornithology, Von der Tann Strasse 7, D 82346 Andechs, Germany
    Am Nat 164:327-34. 2004
    ....