An analysis shows that the coral endosymbiont Symbiodinium—a dinoflagellate genus underpinning the ecological and evolutionary success of reef corals—can adapt to local thermal regimes, thereby shaping the fitness of coral hosts. This may explain why many corals show fidelity for single Symbiodinium types over wide thermal ranges.
- E. J. Howells
- V. H. Beltran
- M. J. H. van Oppen