Fluctuation of associated microbial with building reef corals \(\textit{Acropora}\) sp. from Hang Rai, Ninh Thuan

Pham Thi Mien, Nguyen Kim Hanh, Phan Minh Thu, Nguyen Minh Hieu, Vo Hai Thi, Nguyen Trinh Duc Hieu, Hoang Trung Du, Nguyen Huu Huan
Author affiliations


  • Pham Thi Mien Institute of Oceanography, VAST, Vietnam
  • Nguyen Kim Hanh Institute of Oceanography, VAST, Vietnam
  • Phan Minh Thu Institute of Oceanography, VAST, Vietnam
  • Nguyen Minh Hieu Institute of Oceanography, VAST, Vietnam
  • Vo Hai Thi Institute of Oceanography, VAST, Vietnam
  • Nguyen Trinh Duc Hieu Institute of Oceanography, VAST, Vietnam
  • Hoang Trung Du Institute of Oceanography, VAST, Vietnam
  • Nguyen Huu Huan Institute of Oceanography, VAST, Vietnam




Symbiotic microalgae, bacteria, Acropora sp., environmental factors, Ninh Thuan.


El Niño and the prolonged warm sea surface temperature significantly impacted coral reefs and caused coral bleaching in some parts of the world. This study evaluated the density of symbiotic algae and bacteria associated with the three coral species, namely Acropora hyacinthus, Acropora muricata, and Acropora robusta, collected in Hang Rai, Ninh Thuan in May, June, August 2016, and June 2017. The number of zooxanthellae with each coral species was statistically significant and correlated with several environmental factors, suggesting that symbiotic algae could play a key role in coral health. The number of associated microbial with the three coral species was significantly different; they tended to depend on sampling time rather than coral species-specific. At the time of ENSO (2016), the difference in the total associated bacteria with all three coral species was statistically significant. While the total number of related bacteria with all three species of coral collected in 2017 did not differ from the total of bacteria in ambient water. In conclusion, symbiotic algae tend to be species-specific, whereas bacteria fluctuate significantly over sampling time. Studying the molecular issues of microalgae, the presence, the role of some groups of bacteria involved in the N, C, P, and S cycles, and the influence of environmental parameters should also be encouraged to understand the relationship of coral holobiont better.


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How to Cite

Pham, T. M., Nguyen, K. H., Phan, M. T., Nguyen, M. H., Vo, H. T., Nguyen Trinh, D. H., Hoang, T. D., & Nguyen , H. H. (2022). Fluctuation of associated microbial with building reef corals \(\textit{Acropora}\) sp. from Hang Rai, Ninh Thuan. Vietnam Journal of Marine Science and Technology, 22(2), 177–188. https://doi.org/10.15625/1859-3097/17235