Symbiont densities are the lowest under codominance
To evaluate the relative density of symbionts across samples, we looked at the variation of the ratio of symbiont to host reads. In another coral, Orbicella faveolata , this measure is a reliable proxy of symbiont density (Manzelloet al., 2018). We find that the proportion of symbiont reads is the lowest under codominance (Fig. 5).