Meeting Abstract 69.3  Thursday, Jan. 6  Visual stimulation by blooming thistles accelerates changes in reproductive physiology in American goldfinches LULOFF, T.W.*; HAHN, T.P.; MACDOUGALL-SHACKLETON, S.A.; University of Western Ontario; University of California, Davis; University of Western Ontario tluloff@uwo.ca Songbirds have been shown to respond to environmental information to accurately time reproduction to favorable conditions. Eastern American goldfinches […]

Meeting Abstract 69.1  Thursday, Jan. 6  Thyroid Hormones and Seasonality: The DIO2 Conundrum BENTLEY, GE; UC Berkeley gb7@berkeley.edu Transfer of photoperiodic birds from short to long day lengths causes a rapid (within hours) release of gonadotropins. The earliest photoperiodic response measured to date is activation of the gene for type 2 iodothyronine deiodinase (DIO2), an enzyme which […]

Meeting Abstract 69.5  Thursday, Jan. 6  The neurogenetics of avian photoperiodism: a key role for gonadotropin releasing hormone 1 (GnRH1). STEVENSON, TJ*; BALL, GF; Johns Hopkins University tsteve13@jhu.edu In recent years there has been an exponential increase in the ability to identify the sequence of genetic events that lead to a functional change in physiology and behavior. […]

Meeting Abstract 69.4  Thursday, Jan. 6  Season-dependent modulation of testosterone and estradiol by gonadal neuropeptides MCGUIRE, NM*; KANGAS, K; KOH, A; BENTLEY, GE; Univ. of California, Berkeley; Univ. of California, Berkeley; Univ. of California, Berkeley nicolette@berkeley.edu Temperate vertebrates time breeding to the appropriate time of year by using day length as a primary predictive cue and availability […]

Meeting Abstract 69.6  Thursday, Jan. 6  SEASONAL-LIKE VARIATION IN SONG SYSTEM VOLUME IN WILD ZEBRA FINCHES PERFITO, N.*; ZANN, R.A.; HAU, M.; BENTLEY, G.E.; Univ. of California, Berkeley; LaTrobe Univ, Melbourne, Australia; Max-Planck Institute for Ornithology, Radolfzell, Germany; Univ. of California, Berkeley nperfito@berkeley.edu Zebra finches have been extensively used as a model system for studying the underlying […]

Meeting Abstract 69.2  Thursday, Jan. 6  Peripheral ghrelin stimulates feeding and positive energy balance in a sciurid hibernator HEALY, JE*; BATEMAN, JL; GEARHART, CN; OSTROM, CE; FLORANT, GL; Colorado State University jehealy@rams.colostate.edu Mammals that hibernate undergo a robust circannual cycle of body mass gain and loss mediated by food intake. Hibernators are aphagic in winter, normophagic in […]

Meeting Abstract 68.6  Thursday, Jan. 6  Kinematics of swimming in the manta ray (Manta birostris): 3D analysis of open water maneuverability FISH, F.E.*; NICHOLS, R.H.; DUDAS, M.A.; MOORED, K.W.; BART-SMITH, H.; West Chester Univ., Pennsylvania; West Chester Univ., Pennsylvania; Dudas’ Diving Duds, West Chester, Pennsylvania; Princeton Univ., New Jersey; Univ. of Virginia, Charlottesville ffish@wcupa.edu The locomotor movements […]

Meeting Abstract 68.1  Thursday, Jan. 6  Interactions between internal forces, body stiffness, and fluid environment in a neuromechanical model of lamprey swimming TYTELL, E.D.*; HSU, C.-Y.; WILLIAMS, T.L.; COHEN, A.H.; FAUCI, L.J.; Johns Hopkins Univ.; Tulane Univ.; Princeton Univ.; Univ. of Maryland, College Park; Tulane Univ. tytell@jhu.edu Animal movements result from a complex balance of many different […]

Meeting Abstract 68.5  Thursday, Jan. 6  Examining Behavioral Responses For Stability of Batoids in Response to Waves HOFFMAN, J.L.*; FISH, F.E.; BART-SMITH, H.; West Chester Univ., Pennsylvania; West Chester Univ., Pennsylvania; Univ. of Virginia, Charlottesville Jh688236@wcupa.edu The presence of external perturbations in the aquatic environment necessitate behavioral responses by fish to stabilize the body. The orbital flow […]

Meeting Abstract 68.4  Thursday, Jan. 6  Analytical model to describe pectoral fin kinematics of the Manta birostris: implications for bio-inspired design MOORED, K. W.*; QUINN, D. B.; FISH, F. E.; HAJ-HARIRI, H.; BART-SMITH, H.; Princeton University; Princeton University; West Chester University; University of Virginia; University of Virginia kwm3x@virginia.edu Manta rays are large pelagic fish that are dorsoventrally […]