Meeting Abstract 74.3  Saturday, Jan. 5  A Comparative Look at Tail Movement During Narrow Branch Locomotion. CHADWELL, BA*; YOUNG, JW; SHAPIRO, LJ; NEOMED, Rootstown, OH; NEOMED, Rootstown, OH; Univ. of Texas, Austin bchadwell@neomed.edu Tails have been suggested to act as either counterweights or dynamic stabilizers to maintain balance during locomotion, functions that should be especially important on […]

Meeting Abstract 74.6  Monday, Jan. 6 09:15  Simulations of heart-beat reversal in sessile tunicates WALDROP, LD*; MILLER, LA; Univ. of North Carolina, Chapel Hill; Univ. of North Carolina, Chapel Hill lwaldrop@email.unc.edu Sessile tunicates (Chordata: Urochordata) possess an open circulatory system with a few major vessels and a tubular heart that drives blood flow through interconnected sinuses. The […]

Meeting Abstract 74.2  Monday, Jan. 6 08:15  Metabolic and cardiac correlates of hatching in an ectothermic archosaur DZIALOWSKI, E.M.*; SOTHERLAND, P.R.; GOY SIRSAT, S.K.; SIRSAT, T.S.; Univ. of North Texas; Kalamazoo College; Univ. of North Texas; Univ. of North Texas edzial@unt.edu Though metabolic capacity is augmented in birds when endothermy develops, non-avian archosaurs remain ectothermic throughout their […]

Meeting Abstract 74.4  Monday, Jan. 6 08:45  Membrane progesterone receptor alpha (mPRα) mediates the non-genomic action of progesterone to increase nitric oxide production by human umbilical vein endothelial cells PANG, Y.*; DONG, J.; THOMAS, P.; University of Texas at Austin; University of Texas at Austin; University of Texas at Austin yfpang@utexas.edu Although the beneficial effects of progesterone […]

Meeting Abstract 74.7  Monday, Jan. 6 09:30  Electro-dynamic suction pumping in Ascidian Hearts BAIRD, A. J.*; MILLER, L. A.; University of Carolina, Chapel Hill abaird@live.unc.edu Dynamic suction pumping is characterized by a bidirectional elastic wave and a non-linear frequency flow relationship. This pumping mechanism has been proposed as the driving mechanism for the vertebrate embryonic heart at […]

Meeting Abstract 74.3  Monday, Jan. 6 08:30  Differential vascular perfusion in response to bouts of acute hypoxic exposure in embryonic American alligators. KOHL, ZF*; ELSEY, RM; CROSSLEY II, DA; University of North Texas; Louisiana Department of Wildlife and Fisheries; University of North Texas zac.f.kohl@gmail.com American alligators develop in mound nests and are subject to environmental challenges such […]

Meeting Abstract 74.5  Monday, Jan. 6 09:00  Chronic hypoxic incubation of embryonic chickens (Gallus gallus) alters the cardiovascular response to angiotensin analogues. TATE, KB*; CROSSLEY II, DA; Univ. North Texas kevtate@gmail.com The renin angiotensin system (RAS) is a conserved cardiovascular regulatory system in vertebrates playing a critical role in cardiovascular homeostasis. Angiotensin II (Ang II) is the […]

Meeting Abstract 74.1  Monday, Jan. 6 08:00  Cardiovascular regulation in embryonic American alligators during chronic exposure to reduced environmental oxygen. CROSSLEY II , DA*; ELSEY, R; EME, J; Univ of North Texas; Louisiana Depart of Wildlife and Fisheries,; McMaster University dane.crossley@unt.edu In response to chronic developmental stress, embryonic reptiles exhibit phenotypic plasticity resulting in multiple morphological and […]

Meeting Abstract 74.4  Tuesday, Jan. 6 08:45  The indirect effect of predation on crayfish decision making, nutrient dynamics, and primary production in streams JURCAK, AM*; MOORE, PA; Bowling Green State University ; Bowling Green State University ajurcak@bgsu.edu Animals make important ecological decisions regarding resource use based on a cost-benefit analysis of predation risk. Such decisions will result […]

Meeting Abstract 74.5  Tuesday, Jan. 6 09:00  The Effects of Shelter Abundance on Agonism in the Rusty Crayfish, Orconectes rusticus RUPP, TM*; MARTIN III, AL; Saginaw Valley State University; Saginaw Valley State University tmrupp@svsu.edu An important outcome of agonistic interactions is the allocation of resources. Shelters are an important resource and animals will often escalate the intensity […]