Giant Clam Genome Sequencing Reveals Secrets of Algae Symbiosis
2025-02-01
Scientists sequenced the genome of the giant clam, *Tridacna maxima*, revealing how these massive mollusks evolved a symbiotic relationship with algae to fuel their impressive size. The study found that giant clams have evolved genes to specifically recognize and tolerate symbiotic algae, suppressing their immune response to avoid rejection. This immune suppression, however, leaves them vulnerable to viral infections. The research highlights the evolutionary mechanisms behind the giant clam's size and underscores the importance of protecting these keystone species, threatened by climate change and other factors impacting coral reef ecosystems.