Thermal tolerance
- Facultative hyperthermia during a heatwave delays injurious dehydration of an arboreal marsupial
Highlighted Article: When it is hot outside, a possum can save water and avoid dangerous levels of dehydration by letting its body temperature rise with the heat.
- Nitrite-induced reductions in heat tolerance are independent of aerobic scope in a freshwater teleost
Summary: Nitrite is a pervasive pollutant in aquatic habitats, which affects both heat tolerance and aerobic scope in juvenile European carp (Cyprinus carpio).
- High-frequency temperature variability mirrors fixed differences in thermal limits of the massive coral Porites lobata
Summary: Corals native to highly variable habitats demonstrate greater thermal tolerance than corals from less variable habitats after 36 days of acclimation to thermally stable or variable common garden treatments.
- 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.
- Automated measurement of upper thermal limits in small aquatic animals
Summary: We present a method for the automated measurement of upper thermal tolerance in small aquatic organisms from video data.
- Can physiological engineering/programming increase multi-generational thermal tolerance to extreme temperature events?
Summary: Heat hardening may be augmented by physiological regulators within and across generations, with variable effects on thermal tolerance.
- Rapid adaptive response to a Mediterranean environment reduces phenotypic mismatch in a recent amphibian invader
Highlighted Article: The integration of field and laboratory experiments shows that a recent amphibian invader reduces phenotypic mismatch with the novel environment through physiological and behavioural responses across an unusually short time scale.
- Thermal strategies vary with life history stage
Summary: Littorina obtusata employs different thermal strategies at different life-history stages, suggesting an adaptive trade-off between acute and chronic thermal tolerance. Predictions of the impact of global warming based on only adult responses may underestimate vulnerability.
- Critical thermal limits of bumblebees (Bombus impatiens) are marked by stereotypical behaviors and are unchanged by acclimation, age or feeding status
Summary: Stereotypical behaviors at extreme temperatures correspond to loss of muscular function, and yield repeatable estimates of CTmin and CTmax for bumble bees.