LANDYS-CIANNELLI, M. M.; RAMENOFSKY, M.; WINGFIELD, J. C.; University of Washington, Seattle; University of Washington, Seattle; University of Washington, Seattle: The glucocorticoid-like receptor promotes feeding during spring migration and during energetic stress in the Gambel’s white-crowned sparrow (Zonotrichia leucophrys gambelii) Plasma levels of corticosterone increase during the period of spring migration in a variety of […]

PHILLMORE*, L.S.; MACDOUGALL-SHACKLETON, S.A.; University of Western Ontario; University of Western Ontario: Photoperiodism in Black-capped Chickadees Most seasonally-breeding birds terminate reproduction when they enter a state of photorefractoriness. At this time, the length of daylight that was sufficiently long to stimulate reproduction in the spring is no longer stimulatory, and birds regress their gonads and […]

DEFUR, Peter/L; FOERSOM, Lisa/L; TUBERTY, Shea; Virginia Commonwealth Univ; Virginia Commonwealth Univ; Appalachian State Univ: Effects of the pesticide endosulfan on molting in juvenile red swamp crayfish Procambarus clarkii We examined the effects of endosulfan exposure on molting in juvenile crayfish, Procambarus clarkii, common inhabitants of southeastern freshwater wetlands where endosulfan is used agriculturally. Endosulfan […]

MCNABB, F.M.A.*; MAHER, R.D.; JONES, J.E.; JANG, D.A.; Virginia Tech, Blacksburg: Ammonium Perchlorate Effects on Developing and Adult Thyroid Function in Bobwhite Quail and Mallard Ducks We investigated the effects of ammonium perchlorate (AP), an environmental contaminant resulting from its use as an oxidizer in solid rocket fuels, on thyroid function in two avian species. […]

MCKENZIE, Sarah; DEANE, Elizabeth M; Macquarie University; Macquarie University: Towards a non-invasive protocol for monitoring the wellbeing of marsupial populations. Effective management of captive animal populations requires a comprehensive understanding of both their biological and psychosocial needs, and the tools to monitor their resultant wellbeing. We are concerned with developing and validating a non-invasive protocol […]

LOVE, O.P.; BIRD, D.M.; SHUTT, L.; McGill University, Montreal; McGill University, Montreal; Canadian Wildlife Service, Hull: Plasma corticosterone in captive sibling American kestrels: effects of age, hatching order and hatching asynchrony Sibling variation in adrenocortical function was investigated in postnatally developing, asynchronously-hatching American kestrels (Falco sparverius) by measurements of baseline and acute stress-induced levels of […]

GALIMA, M.M.*; LOWE, C.; KELLEY, K.M.; California State University Long Beach; California State University Long Beach; California State University Long Beach: Endocrine and physiological impacts of fishing (line-catching) and confinement on the marine teleost, California sheephead (Semicossyphus pulcher) The impact of line-catching and confinement on the physiological stress response in the California sheephead (Semicossyphus pulcher) […]

WALKER, B.G.*; WINGFIELD, J.C.; BOERSMA, P.D.; Univ. of Washington, Seattle; Univ. of Washington, Seattle; Univ. of Washington, Seattle: Developmental and nutritional aspects of the adrenocortical stress response in free-living Magellanic penguin chicks In nest-bound chicks that are unable to defend themselves or avoid noxious stimuli, a robust adrenocortical stress response shortly after hatching may be […]

YAO, M*; WESTPHAL, N; DENVER, RJ; Univ. of Michigan; Univ. of Michigan; Univ. of Michigan: Acute stress-induced elevation in corticotropin-releasing hormone expression in Xenopus laevis. Corticotropin releasing hormone (CRH) plays a central role in the regulation of neuroendocrine, autonomic, and behavioral responses to physical and emotional stress. In nonmammalian vertebrates, CRH may regulate both the […]

PACKARD, G.C.; PACKARD, M.J.; Colorado State University, Fort Collins: Effect of Cold-Acclimation on Capacity for Supercooling in Hatchling Painted Turtles Neonates of the North American painted turtle (Chrysemys picta) typically spend their first winter of life inside the shallow, subterranean nest where they completed embryogenesis the preceding summer. This behavior commonly causes overwintering hatchlings in […]