metabolism
- Differential glycogen utilization in shark acid- and base-regulatory gill cells
Summary: Shark gill acid–base regulatory cells contain large intracellular glycogen stores that are differentially utilized and replenished during acid–base stress.
- Severe thermoregulatory deficiencies in mice with a deletion in the titin gene TTN
Summary: Mice with a small deletion in the titin gene TTN exhibit severe thermoregulatory deficiencies and have lower metabolic rates than other size-matched rodents.
- Immune challenge-induced oxidative damage may be mitigated by biliverdin
Summary: In quail, plasma levels of oxidative damage and biliverdin concentration are negatively correlated, consistent with a localized antioxidant function of biliverdin.
- Hyperoxia increases maximum oxygen consumption and aerobic scope of intertidal fish facing acutely high temperatures
Highlighted Article: Hyperoxia increases maximum oxygen uptake and metabolic scope in intertidal fish facing acutely high temperatures but does not increase upper thermal tolerance limits.
- Do squid breathe through their skin?
Summary: Contrary to a 30-year-old well-regarded hypothesis, squid do not obtain oxygen across their skin to supply underlying tissues.
- Symbiont photosynthesis in giant clams is promoted by V-type H+-ATPase from host cells
Summary: Vacuolar-type H+-ATPase (VHA) plays a convergent role in promoting Symbiodinium photosynthesis in giant clams and corals, suggesting VHA as a common exaptation for carbon concentration in marine photosymbioses.
- Clocks and meals keep mice from being cool
Highlighted Article: Daily torpor in energetically challenged mice is transiently inhibited by feeding while the circadian clock gates the expression of torpor, thereby restricting torpor from occurring during the early subjective night.
- Shifts in space and time: ecological transitions affect the evolution of resting metabolic rates in microteiid lizards
Summary: Metabolism evolved associated with both spatial and temporal components of habitat usage in a radiation of lizards with remarkable ecological diversification.
- The importance of incorporating natural thermal variation when evaluating physiological performance in wild species
Summary: Physiological responses associated with stable temperatures are distinct from those in thermally variable environments and we need to understand these differences to truly predict how animals will respond to climate change.
- In vivo aerobic metabolism of the rainbow trout gut and the effects of an acute temperature increase and stress event
Summary: In vivo recordings of gut oxygen uptake in a teleost fish demonstrate a high metabolic sensitivity to an acute temperature increase, as well as the metabolic responses to stress.