... sticklebacks ( Gasterosteus aculeatus ) at the behavioural and molecular levels. Although their behaviour, ecology and evolution are well studied, information on their circadian rhythms are scarce. We quantified the daily locomotor activity rhythm under a light:dark cycle (LD) and under constant darkness (DD...

... Summary: Changes in body composition, activity and corticosterone during a captive experiment demonstrate that a nomadic avian migrant is not sensitive to changes in food availability, but rather escapes low-resource areas. Body composition Corticosterone Irruption Locomotor activity Migration...

... in memory performance in olfactory appetitive conditioning and courtship assays. The microbiological status of the flies had a small or no effect on anxiety-like behavior (centrophobism) or circadian rhythmicity of locomotor activity, but axenic flies tended to sleep for longer and displayed reduced sleep...

... reactions, this response is controlled by the nervous system and not by a direct thermal influence on metabolism. Fruit fly Thermal performance Enzyme kinetics Locomotor activity Thermosensory receptors Organisms are constantly exposed to environmental challenges over which they have...

..., THs may represent a reliable indicator for FMR. To test this hypothesis, 10 Shetland pony mares were kept under semi-extensive central European conditions. During the winter season, one group was fed 60% and one group 100% of their maintenance energy requirements. We measured FMR, locomotor activity...

... responses. In summer, ponies showed a considerably higher field metabolic rate (FMR; 63.4±15.0 MJ day –1 ) compared with food-restricted and control animals in winter (24.6±7.8 and 15.0±1.1 MJ day –1 , respectively). During summer, locomotor activity, resting heart rate and total water turnover were...

... of Biologists Ltd 2014 Fatty acid ethanolamide Food intake Locomotor activity Monoamines Triglycerides Carassius auratus Energy homeostasis in animals is tightly regulated by a complex network of signals adjusting food intake to satisfy metabolic and nutritional requirements...

... interests The authors declare no competing financial interests. 23 8 2013 4 12 2013 © 2014. Published by The Company of Biologists Ltd 2014 Circadian rhythms Locomotor activity Honey bees Apis mellifera Wasps Mischocyttarus Polistes Temperature compensation...

... as well. The daily expression profiles of cell cycle markers ( Ccnd1 , Ccne1 and Pcna ) and circadian clock genes ( Per2 and Clock ) were monitored in liver and esophagus (low and high proliferation index, respectively) of BALB/c mice. Locomotor activity displayed a 24 h rhythm, establishing the circadian...

... amplitude of less than 1°C. The species responses to temperature variation were assessed in the laboratory using five physiological variables: survival, locomotor activity, aerobic respiration, immune defense and concentrations of total free amino acids and sugars. The three species exhibited contrasted...

...Harold Dowse; Juzoh Umemori; Tsuyoshi Koide SUMMARY Ultradian periodicities in physiological processes have been reported for a wide variety of organisms and may appear as bouts in locomotor activity. In some instances, this temporal organization can be related to some ethological strategy. In mice...

... physical (e.g. temperature), ecological (e.g. food availability,predator abundance) and societal factors. artificial selection endurance exhaustion experimental evolution genetics glucose lactate locomotor activity wheel running 2009 3 6 2009 * Author for correspondence...

.... Wolbachia is present in many host tissues and may have local effects on diverse biological processes. In other insects, Wolbachia infections have been shown to alter locomotor activity and response time to food cues. In mosquitoes, locomotor performance relates to the location of mates, human hosts, resting...

... emergence and locomotor activity rhythms under light/dark (LD) and constant darkness (DD) to assess the correlated response to selection. After 55 generations, the percentage of flies emerging during the morning window increased in the early populations, but decreased in the late populations. The percentage...

... ) 31 3 2005 © The Company of Biologists Limited 2005 2005 artificial selection exercise experimental evolution locomotor activity maximum oxygen consumption running performance thermogenesis mouse Studies of locomotor performance have been crucial for understanding how...

... in the regulation of migratory hyperphagia. To examine the role of corticosterone during migration, we induced Gambel's white-crowned sparrows to enter the migratory condition and compared food intake and locomotor activity between controls and birds injected with RU486 - an antagonist to the low-affinity...

... medulla to the medulla and to the lamina via processes in the distal tract. Injections of GABA and Mas-allatotropin into the vicinity of the accessory medulla resulted in stable phase-dependent resetting of the circadian locomotor activity of the cockroach. The resulting phase response curves closely...

... response to selection for increased locomotor activity. After 10 generations of selection for increased voluntary wheel-running, mice from four selected lines ran 75 % more wheel revolutions per day than did mice from four random-bred, control lines. The maximum cold-induced rates of food consumption ( C...

... cm) for monitoring locomotor activity. Some tilt-cages were connected to an Esterline Angus event recorder, and others to a computer-based data acquisition system (DataQuest III, MiniMitter, Sunriver, OR, USA). All tilt-cages were placed inside environmental chambers kept in constant darkness (DD...

... scented with 17 α ,20 β -P than in control water. Moreover, both the spontaneous locomotor activity and the gonadotropin II concentration in the plasma increased significantly because of contact with 17 α ,20 β -P in the ambient water. The swimming speed was unchanged, whether the fish resided in the 17 α...