COWART, J.D.: Palatability of Pteraster tesselatus (Echinodermata: Asteroidea) Eggs Risk of offspring mortality is a critical component of models concerning the ecology and evolution of life history traits in marine invertebrates. In these models, predation is generally assumed to be the most important cause of pre-settlement offspring mortality. Although few studies have directly investigated offspring […]

VONESH, J. R. *; DE LA CRUZ, O.: Modeling the effect of UV-B induced egg-stage mortality on the population dynamics of the Common Toad There has been increasing evidence of widespread population declines of amphibians from relatively undisturbed habitats. It has been suggested that ultraviolet radiation induced embryonic mortality has contributed to the decline of […]

KUFFNER, I.B.: Effects of ultraviolet radiation and water motion on the reef coral Porites compressa: A transplantation experiment Ultraviolet radiation (UVR, 280 – 400 nm) is an important ecological variable affecting coral reef organisms, but UVR effects may be influenced by other factors such as water motion. In this study, the effects of ambient UVR […]

MCKECHNIE, A.E.; LOVEGROVE, B.G.: Thermoregulation in mousebirds (Coliiformes): the role of clustering behavior. The mousebirds (Coliiformes) are a phylogenetically ancient order endemic to the Afrotropics. From an energetic perspective, the mousebirds are of interest in that they exhibit well-developed communal roosting (clustering) as well as a pronounced capacity for torpor. We investigated thermoregulation in two […]

SORENSEN, JS; MCLISTER, J; DEARING, MD: The impact of dietary toxins on locomotion in mammalian herbivores Ingestion of plant secondary compounds is a physiological challenge for mammalian herbivores. The detoxification of plant secondary compounds can impose severe energy constraints via increased metabolic demands and energy excretion as well as decreased energy intake. We hypothesized that […]

CLEARY, M.E.; MARSH, R.L.; ELLERBY, D.J.; BUCHANAN, C.I.: Maximal oxygen consumption in running Guinea fowl. Maximal oxygen consumption (VO2, max) during running has been measured in numerous mammals, but few values exist for birds. VO2, max provides an important benchmark for judging the metabolic effort required at a particular speed. Published values of VO2, max […]

CHAPPELL, Mark A; HAMMOND, Kimberly A: Maximal aerobic capacity in combined cold and exercise in deer mice Small endotherms must expend energy on both thermoregulation and locomotion, and often the two demands occur simultaneously. Several studies have investigated whether energy costs of thermoregulation and locomotion are additive or if metabolic heat produced by locomotor activity […]

O’CONNOR, T.P.; SCHULTERS, R.; ANDZIAK, B.A.; PIERCE, V.A.: Effect of cold-acclimation on metabolism, body composition and glycolytic enzymes in mice Both acute and chronic cold exposure result in increased metabolic rate in endotherms, as they try to maintain their body temperature. Increased metabolic rates, both chronic and acute, are produced by increased flux through catabolic […]

KORINE, C*; VATNICK, I; VAN TETS, I. G.; PINSHOW, B: Can Egyptian fruit bats (Rousettus aegyptiacus) alter their urine composition in response to environmental change? We tested the hypothesis that the Egyptian fruit bats, Rousettus aegyptiacus under conditions of high-energy demands and high water intake save energy by increasing the proportion of ammonia in their […]

FRANK, C. L.*; CAREY, H. V.; Fordham Univ.; Univ. of Wisconsin: The physiological stress induced by mammlian torpor Mammalian torpor is enhanced by a high polyunsaturated fatty acid (PUFA) diet, consequently the tissues of hibernating mammals tend to have high PUFA contents. Lipid peroxidation is a chain reaction initiated between reactive oxygen species (ROS) and […]