The taxonomy of symbiotic dinoflagellates in scleractinian corals is important in understanding how coral reefs will respond to global climate change. We investigated the composition of the dinoflagellate genus Symbiodinium in 22 species of scleractinian corals from 14 genera and eight families in Luhuitou fringing reef of Sanya, using polymerase chain reaction (PCR) of the large subunit rDNA and restriction fragment length polymorphism (RFLP). The results showed that the dinoflagellate genus Symbiodinium c...