metabolism
- Monoterpenes alter TAR1-driven physiology in Drosophila species
Summary: In Drosophila, monoterpenes not only act as biopesticides but also cause complex tyramine receptor 1 (TAR1)-dependent changes in behaviour and metabolism.
- Phylogenetic analysis of maximal oxygen consumption during exercise (V̇O2,max) and ecological correlates among lizard species
Summary: Among species of lizards, helodermatids, varanids and skinks (which are mainly active foragers) have relatively high maximal aerobic capacity during forced exercise (V̇O2,maxV̇O2,max), whereas viviparous species have relatively low V̇O2,maxV̇O2,max.
- Different amplitudes of temperature fluctuation induce distinct transcriptomic and metabolomic responses in the dung beetle Phanaeus vindex
Highlighted Article: Dung beetles respond to temperature fluctuations in different ways depending on the amplitude of fluctuation. However, any temperature fluctuation increased transcripts associated with open chromatin structure relative to constant temperatures.
- Manipulating plasma thyroid hormone levels at hatching alters development of endothermy and ventilation in Pekin duck (Anas platyrhynchos domestica)
Summary: The rise in thyroid hormone levels at the end of incubation plays a role in regulating hatching and development of endothermy in Pekin ducks through changes in metabolism and ventilatory control.
- Early-life hypoxia alters adult physiology and reduces stress resistance and lifespan in Drosophila
Summary: Early-life hypoxia exposure in Drosophila leads to a subsequent change in adult physiology that is associated with reduced stress tolerance and shortened lifespan.
- A method for studying the metabolic activity of individual tardigrades by measuring oxygen uptake using microrespirometry
Summary: Presentation of a method for the quantification of O2 respiration rate in the tardigrades Richtersius coronifer and Macrobiotus macrocalix using microrespirometry.
- Temperature effects on metabolic scaling of a keystone freshwater crustacean depend on fish-predation regime
Highlighted Article: The metabolic pace of life of a species relates not only to body mass and temperature, but also to predation regime and the interactive effects of all three of these factors.
- Life stages differ in plasticity to temperature fluctuations and uniquely contribute to adult phenotype in Onthophagus taurus dung beetles
Summary: Life stages differ in thermal plasticity to increased temperature fluctuations, which may affect how some organisms fare under a warming climate.
- GABA metabolism is crucial for long-term survival of anoxia in annual killifish embryos
Summary: Anoxic annual killifish embryos produce millimolar quantities of GABA. Interruptions in GABA metabolism decrease anoxia tolerance. We propose that GABA supports anoxia tolerance as a neurotransmitter and an anti-oxidant.
- A slow V̇O2 on-response allows comfortable adoption of aerobically unaffordable walking and running speeds on short stair ascents
Summary: Spontaneous walking and running upstairs, when limited to about two floors, is metabolically well tolerated despite the high mechanical power required, and is possible because of the slow V̇O2 on-kinetics.