Although most coral colonies are dominated by a single Symbiodinium type, several genotypes are generally present (Arif et al., 2014; Quigley et al., 2014). Moreover, in times of heat stress, some ...

Introduction: Coral reef ecosystems are increasingly threatened by climate change-induced thermal stress, leading to widespread bleaching events. Giant clams (Tridacna spp.) are key photosymbiotic ...