Search Results - "Lynn, Sharon E"

Differential response of GnIH in the brain and gonads following acute stress in a songbird by Ernst, Darcy K, Lynn, Sharon E, Bentley, George E

“…Highlights • GnIH immunoreactivity in the hypothalamus decreased in males and females subjected to acute restraint stress. • Restrained females were found to…”
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Food, stress, and reproduction: Short-term fasting alters endocrine physiology and reproductive behavior in the zebra finch by Lynn, Sharon E., Stamplis, Teresa B., Barrington, William T., Weida, Nicholas, Hudak, Casey A.

“…Stress is thought to be a potent suppressor of reproduction. However, the vast majority of studies focus on the relationship between chronic stress and…”
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Endocrine and neuroendocrine regulation of fathering behavior in birds by Lynn, Sharon E.

“…This article is part of a Special Issue "Parental Care". Although paternal care is generally rare among vertebrates, care of eggs and young by male birds is…”
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Short-term fasting affects locomotor activity, corticosterone, and corticosterone binding globulin in a migratory songbird by Lynn, Sharon E., Breuner, Creagh W., Wingfield, John C.

“…Unpredictable events such as severe storms lead to an increase in circulating corticosterone (CORT) in breeding birds. This increase is often accompanied by…”
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Avoiding the 'costs' of testosterone: ecological bases of hormone-behavior interactions by Wingfield, J C, Lynn, S, Soma, K K

“…A combination of laboratory and field investigations of birds has shown that expression of behavior such as territorial aggression can occur throughout the…”
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Michael Don Kern, 1938–2019 by Lynn, Sharon E.

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Unpredictable fasting transiently alters corticosterone and feeding behavior but not body mass or later HPA axis function in zebra finches (Taeniopygia guttata) by Lynn, Sharon E., Lungu, Tudor, Lee, Seung Yeon

“…The hypothalamic-pituitary-adrenal (HPA) axis is commonly activated in response to unpredictable conditions, including unstable or inadequate food supply…”
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Supplementary Testosterone Inhibits Paternal Care in a Tropically Breeding Sparrow,Zonotrichia capensis by Lynn, Sharon E., Prince, Leslie E., Schook, Derek M., Moore, Ignacio T.

“…In most male birds that exhibit paternal care, elevation in testosterone above the breeding baseline reduces nestling provisioning, which can be detrimental to…”
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Effects of cooling on thyroid hormone secretion and growth of eastern bluebird (Sialia sialis) nestlings by Lynn, Sharon E, Kern, Michael D, Cagwin, Nathan, Will, Alexis, Kitaysky, Alexander

“…Achieving endothermic homeothermy is a critical aspect of avian development. In pre-homeothermic altricial nestlings, variation in parental brooding behavior…”
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Food, stress, and circulating testosterone: Cue integration by the testes, not the brain, in male zebra finches ( Taeniopygia guttata ) by Lynn, Sharon E, Perfito, Nicole, Guardado, Daisy, Bentley, George E

“…Highlights • We examined fasting effects on corticosterone, testosterone, and GnIH in males. • A 10-h fast increased corticosterone and decreased testosterone…”
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Cooling increases corticosterone deposition in feathers of eastern bluebird chicks by Lynn, Sharon E., Kern, Michael D., Fitzgerald, Kimberly, Will, Alexis, Kitaysky, Alexander

“…•Ecologically relevant cooling alters plasma corticosterone in altricial chicks.•We studied the effects of cooling on corticosterone in first grown…”
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Behavioral insensitivity to testosterone: Why and how does testosterone alter paternal and aggressive behavior in some avian species but not others? by Lynn, Sharon E

“…Abstract Considerable research has been conducted on the interrelationships of the steroid hormone testosterone and reproductive behavior in seasonally…”
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Chill out: Environmentally relevant cooling challenge does not increase telomere loss during early life by Lynn, Sharon E., Kern, Michael D., Serrurier, Bridget, Sirman, Aubrey, Heidinger, Britt J.

“…•Stress responses early in life can promote or mitigate cellular damage.•Previous work shows cooling initiates a stress response in altricial…”
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A phylogenetically controlled test of hypotheses for behavioral insensitivity to testosterone in birds by Lynn, Sharon E., Walker, Brian G., Wingfield, John C.

“…In most male birds that exhibit paternal care, extending the spring testosterone (T) peak throughout the breeding season reduces nestling provisioning…”
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Assay temperature affects corticosteroid-binding globulin and free corticosterone estimates across species by Beyl, Hannah E., Jimeno, Blanca, Lynn, Sharon E., Breuner, Creagh W.

“…•Corticosteroid-binding globulin assay incubation temperature affects resulting free corticosterone estimates.•Disassociation constants increased in four…”
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Interactions of body temperature and nutritional status on hypothalamo-pituitary-adrenal axis activity in pre-thermoregulatory eastern bluebird chicks (Sialia sialis) by Lynn, Sharon E., Kern, Michael D.

“…•Maternal absence may affect glucocorticoid exposure of altricial young.•We studied effects of cooling and fasting on corticosterone in bluebird chicks.•Chicks…”
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COVID-19 as a chronic stressor and the importance of individual identity: A data-driven look at academic productivity during the pandemic by Harris, Breanna N, Bauer, Carolyn M, Carr, James A, Gabor, Caitlin R, Grindstaff, Jennifer L, Guoynes, Caleigh, Heppner, Jennifer J, Ledon-Rettig, Cris C, Lopes, Patricia C, Lynn, Sharon E, Madelaire, Carla B, Neuman-Lee, Lorin A, Palacios, Maria G, Soto, Paul, Terry, Jennifer

“…The COVID-19 pandemic impacted personal and professional life. For academics, research, teaching, and service tasks were upended and we all had to navigate the…”
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Ecologically Relevant Cooling Early in Life Alters Prefledging Adrenocortical Response in Free-Living Songbirds by Lynn, Sharon E., Kern, Michael D.

“…In vertebrates, exposure to stressful stimuli early in development may alter the activity of the hypothalamo-pituitary-adrenal (HPA) axis, with the potential…”
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Environmentally relevant bouts of cooling stimulate corticosterone secretion in free-living eastern bluebird ( Sialia sialis ) nestlings: Potential links between maternal behavior and corticosterone exposure in offspring by Lynn, Sharon E, Kern, Michael D

“…Highlights • We studied the effects of cooling on corticosterone secretion in bluebird chicks. • A < 10 °C reduction of chick surface temperature elevated…”
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Neural Versus Gonadal GnIH: Are they Independent Systems? A Mini-Review by Bentley, George E., Wilsterman, Kathryn, Ernst, Darcy K., Lynn, Sharon E., Dickens, Molly J., Calisi, Rebecca M., Kriegsfeld, Lance J., Kaufer, Daniela, Geraghty, Anna C., viviD, Dax, McGuire, Nicolette L., Lopes, Patricia C., Tsutsui, Kazuyoshi

“…Based on research in protochordates and basal vertebrates, we know that communication across the first endocrine axes likely relied on diffusion. Because…”
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