Meeting Abstract 15.10  Monday, Jan. 4  Cdc42 activity drives fate specification of the heart lineage. WHITAKER, Stacia E.*; COOLEY, James; SWEENEY, Sarah; DAVIDSON, Brad; University of Arizona; University of Arizona; University of Arizona; University of Arizona staciaw@email.arizona.edu The establishment of polarity and subsequent asymmetric cell division are required for differentiation throughout development. In Ciona intestinalis, such a […]

Meeting Abstract 15.3  Tuesday, Jan. 4  Variation in pulmonary compliance and volume in anuran amphibians is driven by lymph mobilization and not gas exchange HEDRICK, MS*; HILLMAN, SS; DREWES, RC; WITHERS, PC; California State University, East Bay; Portland State University; California Academy of Sciences; University of Western Australia michael.hedrick@csueastbay.edu Lymph movement from ventral regions to dorsally-located lymph […]

Meeting Abstract 15.5  Tuesday, Jan. 4  Spiracle control by CO2 in moth pupae – Is pH the hidden trigger? FöRSTER., T. D.*; HETZ, S. K.; Humboldt Universität Berlin, Germany; Humboldt Universität Berlin, Germany thomas.foerster@mso.umt.edu When metabolic rate is low, many insects switch to a periodic breathing pattern known as discontinuous gas exchange cycles (DGC). A single DGC […]

Meeting Abstract 15.4  Tuesday, Jan. 4  Metabolic and behavioral integration in social insect colonies WATERS, James S.*; FEWELL, Jennifer H.; HARRISON, Jon F.; Arizona State University; Arizona State University; Arizona State University james.waters@asu.edu The hypometric scaling of metabolic rate with body size is among the most general patterns in biology. We investigated whether this pattern extends to […]

Meeting Abstract 15.1  Tuesday, Jan. 4  Environmental hypoxia amplifies postprandial cardiac hypertrophy in the American alligator (Alligator mississippiensis) SLAY, C.E.*; HICKS, J.W.; Univ. of California, Irvine cslay@uci.edu The process of digestion is energetically costly, particularly for the carnivorous reptiles which naturally feed intermittently. In these animals, the metabolic response during the postprandial period, termed specific dynamic action […]

Meeting Abstract 15.2  Tuesday, Jan. 4  Effects of High Altitude on Lung Surfactant Lipids in Peromyscus maniculatus DIAZ, S.*; HAMMOND, K.; ORGEIG, S.; University of California, Riverside; University of California, Riverside; University of South Australia soniadiaz01@gmail.com High altitude is one environment where the physiology of the lung might be altered to enhance function, which would be crucial […]

Meeting Abstract 15.3  Wednesday, Jan. 4  Warm fish with cold hearts: Cardiac thermal plasticity of Pacific bluefin tuna Thunnus orientalis JAYASUNDARA, N.*; GARDNER, L.D.; TOWLE, D.T.; BLOCK, B.A.; Stanford University; Stanford University; Mount Desert Island Biological Laboratory; Stanford University nishadj@stanford.edu Bluefin tunas are renowned for their exceptional locomotory capabilities, elevated metabolic rates and unique endothermic physiology. Their […]

Meeting Abstract 15.2  Wednesday, Jan. 4  Transcriptomic profiles of thermal acclimation in cardiac tissues of the porcelain crab, Petrolisthes cinctipes STILLMAN, JH; San Francisco State University stillmaj@sfsu.edu The intertidal zone porcelain crab, Petrolisthes cinctipes, acclimates cardiac thermal performance (CTmax and CTmin) within the first days of transfer to warm and cold temperatures, and differences in tolerance to […]

Meeting Abstract 15.5  Wednesday, Jan. 4  Signaling pathways controlling the crustacean molting gland MYKLES, D.L.; Colorado State University, Fort Collins don@lamar.colostate.edu Molting in decapod crustaceans is controlled by molt-inhibiting hormone (MIH), a neuropeptide that suppresses production of molting hormone (ecdysteroids) by a pair of molting glands (Y-organs or YOs). MIH signaling is organized into a cAMP/Ca2+-dependent “triggering” […]

Meeting Abstract 15.9  Wednesday, Jan. 4   Physiological responses of blue crabs, Callinectes sapidus, swimming upriver into freshwater. DEFUR, Peter L; Virginia Commonwealth University pldefur@vcu.edu More than 30 years ago, David Towle began a life-long series of investigations into how the crab gill functions, notably in freshwater, based on blue crabs swimming up the James River in […]