VEZINA, F.*; WILLIAMS, T.D.: What drives the metabolic cost of egg production? Preliminary data from a study on egg production in European starlings showed a positive correlation between resting metabolic rate (RMR) and plasma levels of the two main yolk precursors, vitellogenin (VTG) and very low density lipoprotein (VLDL). At that time we suggested that […]

SEPULVEDA, Chugey A.; GRAHAM, Jeffrey B.: The swimming energetics of the eastern Pacific bonito (Sarda chiliensis): One step closer to understanding the tuna-bonito relationship Fishes in the family Scombridae have morphological adaptations for fast, efficient locomotion. The most derived scombrids, the tunas (tribe Thunnini), appear to further increase swimming efficiency by elevating aerobic locomotor muscle […]

SECOR, S.M.: The source and sense of the metabolic response to feeding Specific dynamic action (SDA) is the collective energy expended on the ingestion, digestion, absorption, and assimilation of a meal. Known is that SDA is initially fuel by endogenous energy stores, that SDA varies with meals size and composition, and that the magnitude of […]

FINKLER, MS; CULLUM , KA: Interspecific and sex-related differences in metabolism and post-reproductive energy reserves in spring-breeding Ambystomid salamanders. We investigated potential differences in post-reproductive metabolism and energy reserves between male and females of three species of spring breeding Ambystomid salamanders (Ambystoma maculatum, A. texanum, and A. tigrinum). Size-adjusted O2 consumption rates did not differ […]

TAYLOR, E.N.*; DENARDO, D.F.: Growth of juvenile western diamondback rattlesnakes (Crotalus atrox) raised on different diets We examined the effect of food intake on growth parameters in juvenile western diamondback rattlesnakes (Crotalus atrox). Fifty snakes were captured from the wild shortly after birth and housed individually in the laboratory. Snakes were randomly assigned to “high […]

HARTZLER, L.K.*; HICKS, J.W.; BENNETT, A.F.; STINNER, J.N.: Role of Temperature and pH on Enzyme Activity in Air-breathing Ectotherms Maintenance of the integrity of functional groups in enzymes has been proposed as a key reason for regulation of acid-base changes during changes in body temperature. As pH of tissue changes, different titratable groups are affected […]

REESE,, S.A.*; CROCKER,, C.E.; JACKSON,, D.C; ULTSCH, G.R.: Physiology of overwintering in Chrysemys picta picta from Georgia Eastern painted turtles (Chrysemys picta picta) from Georgia were submerged in anoxic and normoxic water at 3°C. Plasma PO2, PCO2, pH, [Na+], [Cl–], [K+], total Mg, total Ca, lactate, glucose, and osmolality were measured from turtles submerged for […]

HARRISON, J.F.; LAFRENIERE, J.; HARTUNG, D.A.; GREENLEE, K.; KIRKTON, S.D.: Ontogeny effects on the diffusive and convective conductance of abdominal and leg trachea in Schistocerca americana grasshoppers Several authors have proposed that evolution of gigantic insects in the late Paleozoic may have been made possible by atmospheric hyperoxia. Is there any evidence from extant insects […]

BURNETT, Louis E; MILARDO, Christopher S: Effects of Air Exposure in Oysters on the Growth and Metabolism of the Protozoan Oyster Parasite Perkinsus marinus We examined the effects of pH, oxygen, carbon dioxide, and temperature on the metabolism of the Apicomplexan oyster parasite Perkinsus marinus simulating conditions that occur within the tissues of the Eastern […]

CHOE, K*; EVANS, D: Compensation for Hypercapnia by a Euryhaline Elasmobranch in Fresh Water: roles of gills and kidneys In fish, hypercapnia is compensated by increased acid excretion by gills and kidneys, with gills playing a larger role. Because gill acid excretion depends on external sodium, a fish’s ability to regulate pH decreases with salinity. […]