RIEHLE, M. M.*; BENNETT, A. F.; LONG, A.D.: Evolutionary changes in stress gene expression in thermally adapted lines of Escherchia coli . Stress gene expression and stress proteins are widely known to increase in response to thermal stress, playing roles in the degradation or refolding of proteins damaged by environmental stress and in preventing the […]

O’CONNOR, M.P.: Convective heat exchange for animals in and near boundary layers. Convection is one of the dominant pathways of heat exchange in most terrestrial ectotherms. Hence, ecologists must often estimate convective heat exchanges either to dissect the relative contributions of convection and other pathways or to estimate how energy balances will be affected by […]

DILLON, M.E.*; DANIEL, T.L.; HUEY, R.B.: Bumblebee Thermoregulation at High Altitude: it Ain’t as Bad as it Seems Thermoregulation at high altitude is a challenge for flying insects. Achieving body temperatures warm enough for flight is made difficult by low air temperatures, and metabolic heat production is potentially constrained by low O2 partial pressures. Nevertheless, […]

BENNETT, V.A.*; LEE, R.E.; KUKAL, O.: Abiotic and biotic factors affecting water loss rates in the polar desert caterpillar Gynaephora groenlandica (Lepidoptera: Lymantriidae) and the temperate caterpillar, Pyrrharctia isabella (Lepidoptera: Arctiidae) Water conservation is critical for inhabitants of polar deserts, such as the arctic woollybear caterpillar (Gynaephora groenlandica). Although G. groenlandica showed a significant decrease […]

LYNOTT, Aaron J.; BANTA, Marilyn; HIGGINBOTHAM, Clay M.; BAKKEN, George S.: Thermoregulation in Swimming Mallard Ducklings Most duckling mortality occurs in the first week after hatching, and is often associated with chilling by cold, windy, wet weather, extended periods of swimming in cold water, or both. We measured the thermoregulatory ability of 3 to 5 […]

FRANK, C.L.*; HOOD, W.: The effects of alpha-linolenic acid on mammalian torpor patterns. Laboratory experiments have demonstrated that the torpor of ground squirrels ( Spermophilus lateralis ) is enhanced by a high linoleic acid diet. Linoleic acid is a polyunsaturated fatty acid (PUFA), and mammals cannot synthesize PUFAs. The diets of free-ranging ground squirrels contain […]

NESPOLO, RF; BACIGALUPE, LD; BOZINOVIC, F: On the heritability of body temperature in endotherms: a study in leaf eared mice Natural selection acts over additive genetic variation. Consequently, its measurement is a requisite for any statement about the evolutionary significance of a trait. The evolution of endothermy is a long-standing issue in which body temperature […]

MCLISTER, J.D.; SORENSEN-FORBY, J.S. ; DEARING, M.D.: Do woodrats use dietary toxins to reduce thermoregulatory costs? Several woodrat species feed more extensively on toxic plants during the winter, thus exposing themselves to high toxic stress when thermal stress is also high and when energy availability is low. Because studies show that non-lethal exposure to toxins […]

HAIM, A; SHANAS, U; SCANTLEBURY, M: COMPARATIVE PHYSIOLOGY OF SPINY MICE POPULATIONS – EFFECTS OF SLOPE FACING MICRO-HABITATS The common spiny mouse is widely distributed in rocky habitats of Israel from the desert to the Mediterranean ecosystem. A comparative study between mice from a desert population and a Mediterranean population revealed significant differences of thermo […]

PETERSON, C.C.*; LIGON, D.B.: Acute and acclimational effects of temperature on metabolic rates of hatchling slider turtles: embryonic metabolic compensation? Reptile embryos may blunt the acute physiological effects of incubation temperature through chronic acclimation (compensation) of anabolic and developmental processes, and an integrated consequence of such adjustments is temperature compensation of metabolic rates. We gauged […]