Broadcast spawning patterns of Favia species on the inshore reefs of Thailand

To obtain a global perspective of coral reproductive patterns, there is a clear need for more descriptive studies from under-represented regions (e.g., Thailand). As such, this study provides the first data on the timing of gamete maturation and spawning of seven species of Favia from Thailand. Corals in the inner and eastern Gulf of Thailand (GOT) spawned following the full moons of February/March, whereas spawning in the southwestern GOT and the Andaman Sea occurred 1 month later following the full moons of March/April. Aquarium observations of five Favia species confirmed spawning between five and six nights after the respective full moon, with the time of release of gametes overlapping among species. Further research on gametogenesis in additional coral species is required to document whether the spawning patterns exhibited by Favia are typical of all coral species in Thailand.