BAKKEN, G.S.*; WILLIAMS, J.B.: Effect of Wind and Growth on the Thermoregulatory Metabolism of Arctic-breeding Shorebird Chicks Many Arctic-breeding shorebird chicks leave the nest and forage with one or both parents soon after hatching. Chicks may be exposed to temperatures near 0oC, and tundra habitats offer little shelter from wind. Parental attentiveness prevents severe hypothermia, […]

O’CONNOR, T.P.*; GIBBS, C.L.; KUROIWA, K. : Effect of Cold-Acclimation on House Finch Metabolism and Organ Sizes Two of the most intensively studied processes in the field of ecological physiology are the limits to metabolic performance and the energetics of temperature acclimation. A major emphasis currently is the examination of relationships among basal metabolic rate […]

LIGHT, D.B.*; DAHLSTROM, P.K.: EXTRACELLULAR ATP STIMULATES VOLUME DECREASE IN NECTURUS ERYTHROCYTES VIA A P2X2 RECEPTOR. Receptor Regulatory volume decrease (RVD) in mudpuppy (Necturus maculosus) erythrocytes depends on a K+ conductance that is activated during cell swelling. In addition, hypotonic swelling causes release of ATP into the extracellular medium, which leads to increased K+ efflux […]

DE LA PAZ, K.L.; HOYT, D.F.; WICKLER, S.J.; COGGER, E.A.: Does Muscle Function Explain Preferred Speed? Horses prefer to trot at speeds that are the most economical. A possible explanation for this preference is at these speeds, muscle fibers are contracting more slowly and functioning more economically. The present study was undertaken to test the […]

KARPOVICH, S.*; TOIEN, O.; BARNES, B.M.: Does Active Metabolic Suppression Occur During Entry into Torpor? Captive S. parryii from Toolik Lake, Alaska were housed at University of Alaska Fairbanks and exposed to ambient temperatures (Ta) of +2, -5 and -12oC. Body temperature (Tb) was recorded via telemetry and rates of oxygen consumption (VO2) and carbon […]

Moore, M.M.*; White, J.V.; Williams, E.E.: Docosahexaenoic acid in cell membranes: vital for fish and fatal for cancer. It is known that cells from fish maintained in cold water contain much higher amounts of docosahexaenoic acid (DHA) than cells of the same fish at warmer temperatures. DHA is also associated with the alleviation of many […]

HARTMAN, M.J.*; STANCYK, S.E.: Distribution of an Invasive Anomuran Decapod,Petrolisthes armatus,in the North Inlet-Winyah Bay National Estuarine Research Reserve on the South Carolina Coast Petrolisthes armatus is a filter-feeding crab which appears to be extending its range northward along the southeast coast of the United States. P. armatus is native to Brazil and has been […]

WILSON, B.*; MCWILLIAMS, S.: Diet preferences for certain fatty acids and its effect on composition of fat reserves in migratory Red-eyed Vireos Most birds accumulate large lipid stores as the primary source of energy for fueling their migratory flights. The composition of these lipid stores varies among species; however, 16-carbon and 18-carbon fatty acids typically […]

MYKLES, D.L.*; MULDER, E.P.; MEDLER, S.A.; CHANG, E.S.: Developmentally-regulated fiber-type switching in claw muscles of American lobster, Homarus americanus Fibers in the claw closer muscles undergo a developmentally-regulated switching as the isomorphic claws of larvae and juveniles differentiate into the heteromorphic cutter and crusher claws of the adult. Fast-to-slow switching occurs in the presumptive crusher […]

SHAFER, T.H.*; MONTOYA, L.M.; HOFFMAN, G.G.: Developmental and Environmental Expression of the Gene for a Na/K/2Cl Cotransporter in the Blue Crab (Callinectes sapidus) Juvenile blue crabs (Callinectes sapidus) inhabit low salinity environments (5 ppt or less) in the tidal rivers and creeks of southeastern NC. Larvae generally hatch from ovigerous females in sea water (about […]