Meeting Abstract 29.1  Wednesday, Jan. 5  The impacts of repeated cold exposure in insects SINCLAIR, BJ*; MARSHALL, KE; ZHANG, J; The University of Western Ontario bsincla7@uwo.ca In nature, insects are exposed to repeated bouts of environmental stress, although laboratory experiments seldom reflect this. We have been using insect cold tolerance as a model to explore the impacts […]

Meeting Abstract 29.5  Wednesday, Jan. 5  Song complexity in the song sparrow (Melospiza melodia) as an indicator of constitutive immune function KUBLI, S.*; MACDOUGALL-SHACKLETON, E.A.; The University of Western Ontario, London, ON; The University of Western Ontario, London, ON skubli@uwo.ca Indicator models of sexual selection predict that ornaments advertise aspects of male quality, such as disease resistance. […]

Meeting Abstract 29.3  Wednesday, Jan. 5  Oxidative stress occurs in cardiac muscle of some Antarctic icefishes in response to an increase in temperature MUELLER, I.A.*; O’BRIEN, K.M.; University of Alaska, Fairbanks; University of Alaska, Fairbanks iamueller@alaska.edu Loss of hemoglobin (Hb) in Antarctic icefishes (family Channichthyidae, suborder Notothenioidei) is correlated with an increase in mitochondrial density, and changes […]

Meeting Abstract 29.2  Wednesday, Jan. 5  Genes underlying amino acid transport differences in echinoderms from contrasting polar and temperate environments. APPLEBAUM, S.L.*; GINSBURG, D.W.; MANAHAN, D.T.; University of Southern California; University of Southern California; University of Southern California sappleba@usc.edu Many phyla of marine invertebrates absorb dissolved organic material across their body walls from low concentrations in seawater. […]

Meeting Abstract 29.4  Wednesday, Jan. 5  Characterization of the Bacterial Properties that Impair Respiration in the Atlantic Blue Crab, Callinectes sapidus JOHNSON, N.G.*; BURNETT, L.E.; BURNETT, K.G.; College of Charleston; College of Charleston; College of Charleston ngjohnso@edisto.cofc.edu In the blue crab Callinectes sapidus, injection with the bacterial pathogen Vibrio campbellii causes a decrease in oxygen consumption. Histological […]

Meeting Abstract 28.5  Wednesday, Jan. 5  Truncating the C-terminus of flightin disrupts flight muscle ultrastructure and reduces mechanical performance in Drosophila TANNER, B.C.W.*; MILLER, M.S.; MILLER, B.M.; LEKKAS, P.; IRVING, T.C.; MAUGHAN, D.W.; VIGOREAUX, J.O.; Univ. of Vermont, Burlington; Univ. of Vermont, Burlington; Univ. of Vermont, Burlington; Univ. of Vermont, Burlington; Illinois Institute of Technology, Chicago; Univ. […]

Meeting Abstract 28.2  Wednesday, Jan. 5  The effects of betamethasone on myosin expression patterns of fetal Cavia porcellus hindlimb and ventilatory musculature SCHROEDER, J.R.*; PREHODA-WYERS, M.M.; DEAROLF, J.L.; Hendrix College schroederjr@hendrix.edu When pregnant women are likely to give birth prematurely, glucocorticoids are administered to accelerate the development of fetal organs. Studies indicate glucocorticoids switch the cell cycle […]

Meeting Abstract 28.3  Wednesday, Jan. 5  The Relative Contributions of Titin and Collagen to Passive Tension POWERS, KL*; MONROY, JA; GILMORE, LA; NISHIKAWA, KC; Northern Arizona University krysta.powers@nau.edu Passive tension in an intact muscle has been attributed primarily to titin and collagen. This study aims to quantify the relative contributions of titin and collagen to passive tension […]

Meeting Abstract 28.1  Wednesday, Jan. 5  Effects of glucocorticoid administration on the contractile properties of the fetal guinea pig diaphragm SCIORTINO, A.**; PREHODA-WYERS, M.M.; DEAROLF, J.L.; Hendrix College, Conway, AR sciortinoaa@hendrix.edu Glucocorticoids have been administrated to pregnant mothers at risk of preterm delivery in order to stimulate fetal lung development. The application of these steroids improves neonatal […]

Meeting Abstract 28.4  Wednesday, Jan. 5  Ca2+-activation of skeletal muscle: Not just the thin filament? MONROY, J.A.*; POWERS, K.L.; GILMORE, L.A.; UYENO, T.A.; NISHIKAWA, K.C.; Northern Arizona University Jenna.Monroy@nau.edu Titin, the largest known protein, contributes to muscle passive tension but its role in active muscle remains elusive. In this study, we investigated the effect of activation on […]