... pH levels (7.75 or 7.40). Survival, metabolic rates, whole-organism aerobic performance and cellular energetic capacity were assessed at the end of the exposure. Our results show that shrimp survival was negatively affected by temperature above 6°C and low pH, regardless of their origin. Additionally...

..., neither of the corticosterone traits differed between the A-selected and control lines. Thus, the experiment did not provide evidence that evolution of increased aerobic performance is facilitated by the modification of glucocorticoid levels. The results, however, do not exclude the possibility that other...

... showed increased performance under acute hypoxic test conditions, but not under normoxia. Our results highlight the detrimental effects of hypoxia on aerobic swim performance and sensory information acquisition, and the ability of fish to heighten aerobic performance through acclimation processes...

... High-altitude adaptation Respiration O 2 transport pathway Aerobic performance High-altitude natives are valuable model organisms for understanding how physiological systems evolve. The cold and oxygen-depleted (hypoxic) environment at high altitudes requires that endotherms sustain high...

... findings from whole-animal to molecular levels. Organisational complexity Sublethal thermal limits Aerobic power budget Aerobic performance Oxygen supply Oxygen demand Temperature adaptation Water breather Air breather Given the impacts of climate warming on ecosystems, it is critical...

... performance. We studied plastic changes in organ mass and volume involved in aerobic respiration in response to acclimation to high altitude, and how those changes are matched with aerobic performance measured by . Adult deer mice born and raised at 340 m were acclimated at either 340 or 3800 m for a period...

... interlamellar spacing minimizes branchial resistance, it also limits lamellar number and results in a lower total gill surface area for the mako relative to tunas. The morphology of the elasmobranch gill thus appears to constrain gill area and, consequently, limit mako aerobic performance to less than...

... of fish, one composed of cruising specialists (higher aerobic performance, quick recovery from strenuous swimming, but low maximum burst speeds) and a second group of sprinting specialists (higher maximum burst speeds, but lower aerobic performance and slow recovery from strenuous swimming), may...

...Gregory A. Russell; Enrico L. Rezende; Kimberly A. Hammond SUMMARY Previous studies suggest that genetic factors and acclimation can account for differences in aerobic performance( V̇ O 2 max ) between high and low altitude populations of small mammals. However, it remains unclear to what extent...

... only minimally. Finally, we argue that O 2 uptake is only one of a number of properties important to human aerobic performance. Cardiovascular O 2 delivery is the single identifiable factor most often implicated as the limit to oxygen uptake. Consequently, most of the recent drug scandals...

...Kimberly A. Hammond; Mark A. Chappell; Richard A. Cardullo; Ruei-Shiuan Lin; Torgeir S. Johnsen ABSTRACT We examined aerobic performance, organ and muscle mass and enzymatic activity in red junglefowl ( Gallus gallus ). We tested three models of performance limitation (central limits, peripheral...