The temperate coral <i>Astrangia poculata</i> maintains acid-base homeostasis through heat stress.

ABSTRACT: Heat stress can disrupt acid-base homeostasis in reef-building corals and other tropical cnidarians, often leading to cellular acidosis that can undermine organismal function. Temperate cnidarians experience a high degree of seasonal temperature variability, leading us to hypothesize that temperate taxa have more thermally robust pH homeostasis than their tropical relatives. To test this, we investigated how elevated temperature affects intracellular pH and calcification in the temperate coral Astrangia poculata. Clonal pairs were exposed to elevated (30°C) or control (22°C) temperatures for 17 days. Despite causing damage to host tissues and symbiont cells, elevated temperature did not affect intracellular pH or inhibit calcification in A. poculata. These responses contrast

SUBMITTER: Allen-Waller L 

PROVIDER: S-EPMC12393436 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature