Meeting Abstract 109.1  Sunday, Jan. 6  Influence of temperature on non-breeding HPG-axis activity in northern cardinals. JAWOR, J.M.*; HOOKER, J.D.; University of Southern Mississippi; University of Southern Mississippi jodie.jawor@usm.edu In seasonally breeding birds, change in day length is a very common cue used to track seasonal change and initiate breeding, however, not all species use changing day […]

Meeting Abstract 109.2  Sunday, Jan. 6  Effects of testosterone on spring nocturnal migratory restlessness and body composition in Zonotrichia albicollis VANDERMEER, C.L.*; BEZNER KERR, W.; GUGLIELMO, C.G.; MACDOUGALL-SHACKLETON, S.A.; Univ. of Western Ontario, London; Univ. of Western Ontario, London; Univ. of Western Ontario, London; Univ. of Western Ontario, London cvande67@uwo.ca Photoperiod influences a number of hormonal cascades […]

Meeting Abstract 109.5  Sunday, Jan. 6  Characterizing the conversion of yolk estradiol to estrogen sulfates during embryonic development in the red-eared slider. PAITZ, RT*; BOWDEN, RM; Illinois St. Univ.; Illinois St. Univ. rpaitz@ilstu.edu In the red-eared slider turtle (Trachemys scripta), the process of sex determination is estrogen sensitive, with the application of exogenous estradiol resulting in the […]

Meeting Abstract 109.4  Sunday, Jan. 6  Androgen profiles across the male pregnancy cycle in the sex-role reversed Gulf pipefish SCOBELL, S.K.*; JAQUES, J.T.; JONES, A.G.; Texas A&M University; Texas A&M Veterinary Medical Diagnostic Laboratory, Texas A&M University; Texas A&M University skscobell@tamu.edu Male pregnancy is a phenomenon found only in the teleost fish family Syngnathidae (seahorses, seadragons, and […]

Meeting Abstract 108.3  Sunday, Jan. 6  Visual acuity in deep-sea fish and mollusks GAGNON, YL*; JOHNSEN, S; Duke University; Duke University 12.yakir@gmail.com The ocean can be a challenging environment for visually active animals. Downwelling light is absorbed by the water and decreases exponentially with depth. At epipelagic depths (0-200 m), targets reflect ambient light and create extended […]

Meeting Abstract 108.4  Sunday, Jan. 6  The physiological basis of polychromatic ultraviolet vision in mantis shrimp BOK, MJ*; PORTER, ML; CRONIN, TW; University of Maryland, Baltimore County; University of Maryland, Baltimore County; University of Maryland, Baltimore County mikebok@gmail.com Stomatopods, or mantis shrimps, possess the most spectrally diverse retinal photoreceptor array yet described. Their photoreceptors are maximally sensitive […]

Meeting Abstract 108.1  Sunday, Jan. 6  Post-synaptic Density (PSD) and Axon Guidance Genes in the Transcriptomes of 8 Sponges FARRAR, N*; RIESGO, A; LEYS, S; University of Alberta; Centro de Estudios Avanzados de Blanes-CSIC, Harvard University; University of Alberta nfarrar@ualberta.ca Sponges are morphologically simple metazoans that lack nerves or any form of synapse, yet the genome of […]

Meeting Abstract 108.5  Sunday, Jan. 6  Neuromuscular Facilitation in the Motor Networks of Cubomedusae EICHINGER, J.M.*; SATTERLIE, R.A.; Univ. of North Carolina Wilmington; Univ. of North Carolina Wilmington jme1463@uncw.edu The first modern physiological analysis of cnidarian nerve nets was performed by Pantin, in which he provided the first detailed investigation of the “staircase” effect. He later coined […]

Meeting Abstract 108.6  Sunday, Jan. 6  Manipulating central fatigue in mice bred for high voluntary wheel running using a serotonin agonist and antagonist CLAGHORN, GC*; FONSECA, IAT; FIELDER, J; BARBER, C; GARLAND JR, T; Univ. of California, Riverside; Univ. of California, Riverside; Univ. of California, Riverside; Univ. of California, Riverside; Univ. of California, Riverside gclag001@ucr.edu Central fatigue […]

Meeting Abstract 108.2  Sunday, Jan. 6  Fixational eye movements in the earliest stage of metazoan evolution BIELECKI, J*; GARM , A; University of Copenhagen jbielecki@bio.ku.dk Fixational eye movements in vertebrate vision prevent sensory adaptation by refreshing the retinal image. Without fixational eye movements an animal would be rendered blind during visual fixation until the time when the […]