Meeting Abstract 53.1  Saturday, Jan. 5  Effects of estradiol on sexual motivation and preferences towards conspecific calls in female t�ngara frogs CHAKRABORTY, Mukta*; BURMEISTER, S.S; Univ. of North Carolina, Chapel Hill mukta@email.unc.edu Sex steroid hormones influence reproductive behavior in most vertebrates. In t�ngara frogs, females use acoustic cues to choose mates. Males produce a simple �whine� call, […]

Meeting Abstract 53.6  Saturday, Jan. 5  Effects of Testosterone on Sexually Dimorphic Traits in Mexican Banded Geckos (Coleonyx elegans) GOLINSKI, A.**; KRATOCHVIL, L.; JOHN-ALDER, H.; Rutgers Univ., New Brunswick; Charles Univ., Prague; Rutgers Univ., New Brunswick golinski@aesop.rutgers.edu Eyelid geckos (Eublepharidae) exhibit genetic (GSD) and temperature-dependent (TSD) sex determination as well as sexual dimorphisms in head and body […]

Meeting Abstract 52.3  Saturday, Jan. 5  Re-evaluating parental investment strategies in albatross – a physiological perspective SPRAGUE, R.S.**; ZAUN, B.J.; BREUNER, C.W.; Univ. of Montana; Kauai NWR Complex; Univ. of Montana rachel.sprague@umontana.edu The pattern of foraging trips made by Procellariiform seabirds during chick rearing allows us to investigate the parental tradeoff between self-maintenance and investment in offspring. […]

Meeting Abstract 52.4  Saturday, Jan. 5  Learning about novel stressors: a role for acute corticosterone elevations in free-ranging lizards THAKER, M*; HEWS, DK; LIMA, SL; Indiana State Univ.; Indiana State Univ.; Indiana State Univ. mthaker@indstate.edu Elevation in plasma corticosterone (CORT) during stressful events has been functionally linked to immediate changes in behaviors such as locomotion, foraging activity, […]

Meeting Abstract 52.1  Saturday, Jan. 5  Corticosterone response to nest-directed disturbances in two migratory songbirds BUTLER, Luke K*; BISSON, Isabelle; HAYDEN, Timothy J; WIKELSKI, Martin; ROMERO, L. Michael; Tufts University; Princeton University; Army Endangered Species Research Program; Princeton University; Tufts University luke.butler@tufts.edu In an attempt to measure the susceptibility of an endangered songbird to chronic stress, we […]

Meeting Abstract 52.5  Saturday, Jan. 5  Chronically elevated corticosterone inhibits mating and feeding in a Plethodontid salamander, Desmognathus ochrophaeus RICCIARDELLA, L.F.*; WOODLEY, S.K.; Duquesne University; Duquesne University ricciardellal@duq.edu In western Pennsylvania, acidified streams are common. Studies show that acidification is associated with altered stream salamander assemblages. The mountain dusky salamander, Desmognathus ochrophaeus, is an abundant local species […]

Meeting Abstract 52.2  Saturday, Jan. 5  An Investigation of Male Age, Provisioning Rate, and Physiological Costs in Florida Scrub-Jays WILCOXEN, T.E.*; SCHOECH, S.J.; BRIDGE, E.S.; BOUGHTON, R.K.; University of Memphis; University of Memphis; University of Memphis; Archbold Biological Station twilcoxn@memphis.edu Life-history theory predicts that as animals age they should increase the energy expended towards the care of […]

Meeting Abstract 51.2  Saturday, Jan. 5  Using fiddler crabs to investigate the relationship between morphological variation and geographic range HOPKINS, M.J.*; THURMAN, C.L.; University of Chicago; University of Northern Iowa mjh@uchicago.edu Studies documenting geographic variation in the morphology of numerous taxa suggest that species with greater geographic range should show more species-level morphological variation. We test this […]

Meeting Abstract 51.5  Saturday, Jan. 5  Shell Game: Coevolution and Compromise in Four Functions of the Turtle Shell STAYTON, C. Tristan; Bucknell University tstayton@bucknell.edu The turtle shell (composed of a dorsal carapace and ventral plastron) acts in many biologically important roles. Most obviously, it serves to protect the turtle within from predation and thus acts as a […]

Meeting Abstract 51.9  Saturday, Jan. 5  Response of Juvenile Scalloped Hammerhead Sharks to Electric Stimuli KAJIURA, Stephen M*; FITZGERALD, Timothy P; Florida Atlantic University; Environmental Defense kajiura@fau.edu All elasmobranchs possess an electrosensory system that enables them to detect electric fields in their environment. Although their exquisite sensitivity to weak electric fields is legendary, the determination of their […]