Linking biogeography to physiology: Evolutionary and acclimatory adjustments of thermal limits

摘要: Temperature-adaptive physiological variation plays important roles in latitudinal biogeographic patterning and setting vertical distributions along subtidal-to-intertidal gradients coastal marine ecosystems. Comparisons of congeneric invertebrates reveal that the most warm-adapted species may live closer to their thermal tolerance limits have lower abilities increase heat through acclimation than more cold-adapted species. In crabs snails, heart function be critical importance establishing limits. Temperature-mediated shifts gene expression acclimation. Transcriptional changes, monitored using cDNA microarrays, been shown differ between steady-state diurnal temperature cycling a eurythermal teleost fish (Austrofundulus limnaeus). stenothermal Antarctic notothenioid fish, losses capacity for temperature-mediated expression, including absence heat-shock response, reduce these acclimate increased temperatures. Differences among capacities adjust determine how organisms are affected by climate change.