...Andrea M. Darby; Scott A. Keith; Ananda A. Kalukin; Brian P. Lazzaro ABSTRACT Bacterial infections can substantially impact host metabolic health as a result of the direct and indirect demands of sustaining an immune response and of nutrient piracy by the pathogen itself. Drosophila melanogaster...

... swimming [CTS max ] and realistic aerobic scope (AS R ) of juvenile schoolmaster snapper ( Lutjanus apodus ). Their CTS max (37.5±0.1°C) was only slightly lower than their CT max (38.9±0.1°C) and this is probably because their maximum metabolic rate (MMR) and AS R during the former test were ∼42 and 65...

... jet propulsion swimming in cuttlefish is relatively high. Maximal efficiency and power output occur at the cycle frequency used in vivo . Cephalopod Work loop Metabolism Contractile efficiency University of Leeds http://dx.doi.org/10.13039/501100000777 Cephalopod...

...Rebeccah M. Sandrelli; Emma S. Porter; Anthony K. Gamperl ABSTRACT Fish can experience hyperoxia in shallow environments due to photosynthetic activity and this has been suggested to provide them with a metabolic refuge during acute warming. However, this hypothesis has never been tested...

... by which fish acclimatize to cyclic hypoxia remain unclear, especially in hypoxia-sensitive species. We hypothesized that acclimation to cyclic hypoxia requires a downregulation of aerobic metabolic rate and an upregulation of mitochondrial respiratory capacities to mitigate constraints on aerobic...

... through time, but an increase in proteins for lipid transport, lipid metabolism, the incorporation of polyunsaturated fatty acids into membranes and protein turnover. For example, there was an increase in the levels of apolipoprotein C, prostaglandin reductase-3 and surfeit locus protein 4, involved...

...Katja B. Last; Hans Malte; Emil Rindom; Igor N. Guagnoni; Tobias Wang ABSTRACT The Burmese python has a remarkable digestive physiology with large elevations of metabolic rate and heart rate following feeding. Here, we investigated the relationship between heart rate, oxygen consumption and core...

... of metabolic tasks between organelles, cells, organs and, in the case of eusocial organisms, between the individuals that comprise the ‘superorganism’. Exemplifying this, nurse honey bees maintain high abdominal lipids, while foragers have very low lipid stores, likely contributing to efficient performance...

...Cornelia Wetzker; Christin Froschauer; Christian Massino; Klaus Reinhardt ABSTRACT Males and females of many species store sperm for extended periods. During storage, sperm are predicted to undergo cellular and functional changes, especially towards glycolytic energy metabolism because oxygen...

... from male and female cheetahs as well as humans, were analysed and compared for fibre type and size, and metabolism. Overall, cheetah muscle had predominantly type IIX fibres, which was confirmed by the myosin heavy chain isoform content (mean±s.d. type I: 17±8%, type IIA: 21±6%, type IIX: 62±12...

... metabolism ( Fig. 7A ). To avoid a highly reduced state and thereby an inhibition of glycolysis, a high NAD + /NADH ratio needs to be maintained. Although the NAD + /NADH ratio was reduced in anoxia, the absolute level of NAD + was maintained ( Figs 6B and 7A ). Moreover, there was an expected increase...

... Metabolism Natural Environment Research Council http://dx.doi.org/10.13039/501100000270 NE/T008334/1 University of Glasgow Sleep is a neurophysiological state that is widespread throughout the animal kingdom ( Rattenborg and Ungurean, 2023 ). From an ecological perspective...

...Marjoriane de Amaral; Maiza Cristina Von Dentz; Suyllieme Machado David; Luiz Carlos Kucharski ABSTRACT Anurans undergo significant physiological changes when exposed to environmental stressors such as low temperatures and humidity. Energy metabolism and substrate management play a crucial role...

..., which translated to large variation in the supply of metabolic energy and photosynthetically fixed carbon at higher latitudes. Despite these trends, the differences in TPCs for Pocillopora spp. were not profoundly different across latitudes, reducing the likelihood that populations of these corals could...

... tolerance, possibly because photosynthetic oxygen production alleviated oxygen limitation. Accordingly, this advantage disappeared later in starvation when photosynthesis ceased. Thus, E. viridis can cope with heatwaves by suppressing metabolism and plastically adjusting heat tolerance; however, starvation...

... cold exposure. Significant differences from control bees were only detectable within 30 min after the treatment, with most occurring at the 10 min recovery time point. Genes associated with gluconeogenesis and glycolysis were most notably upregulated, while genes related to lipid and purine metabolism...

...Harriet R. Goodrich; Chris M. Wood; Rod W. Wilson; Timothy D. Clark; Katja B. Last; Tobias Wang ABSTRACT The physiological processes underlying the post-prandial rise in metabolic rate, most commonly known as the ‘specific dynamic action’ (SDA), remain debated and controversial. This Commentary...

...Elizabeth J. Rogers; Alexander R. Gerson ABSTRACT Animals can cope with dehydration in a myriad of ways, both behaviorally and physiologically. The oxidation of protein produces more metabolic water per kilojoule than that of fat or carbohydrate, and it is well established that birds increase...

... of insecure access to food can lead to changes in weight, motivation and cognition. Some of these studies account for changes in weight through changes in metabolism, while others observe increases in feeding and motivation to work for food. It has been proposed that weight gain is an adaptive response...

.... In ectotherms, changes to both metabolism and behaviour can help alleviate thermal stress. Nonetheless, no study in any ectotherm has yet empirically investigated how changing temperatures affect among-individual differences in the associations between these traits. Using the beadlet anemone ( Actinia equina...