Summary of Abstract Submission

Abstract Submission No. IO50-10-0016PresentationPoster


Diksha Sharma*1, Chinnarajan Ravindran**1

1 CSIR-National Institute of Oceanography, India


Coral disease outbreaks have emerged as a major cause of coral mortality and reef decline globally. Coral diseases generally occur in response to biological stresses, such as bacteria, fungi and viruses, and nonbiological stresses, such as increased sea surface temperatures, ultraviolet radiation and pollutants. Further, the increase in disease is often linked to deteriorating water quality associated with human-made pollutants and increased sea surface temperature which allow the proliferation and colonization of microbes. There are more than 36 coral diseases have been identified in over 102 coral species from 54 countries. The disease prevalence in Indian coral reefs are found to be of 8.8% to 53.3% which are not well studied and most of the etiological agents are not known for the coral diseases. Further, the pathologies, or mechanisms by which many diseases act upon the coral polyp are not well known. Among the five major Indian coral reefs, highest disease prevalence has been found in Andaman and Nicobar Islands followed by Gulf of Mannar, Gulf of Kachchh and Malvan. Total of 13 diseases were found in Indian coral reefs, mainly affecting Porites sp. and Acropora sp. which are the dominant and most susceptible among coral species. Thus, the present study demonstrates an overview of coral diseases and their prevalence in the Indian reef building coral reefs the most important yet most poorly understood aspect of coral diseases.