A study at Oregon State University has concluded that significant outbreaks of viruses may be associated with coral bleaching events, especially as a result of multiple environmental stresses.
(From Science Daily) — One such event was documented even as it happened in a three-day period. It showed how an explosion of three viral groups, including a herpes-like virus, occurred just as corals were bleaching in one part of the Great Barrier Reef off the east coast of Australia.
The findings, reported in Frontiers in Microbiology, take on special significance as the world is now experiencing just the third incidence ever recorded of coral bleaching on a global scale, according to the National Oceanic and Atmospheric Administration, or NOAA.
Coral bleaching can occur when corals are exposed to stressful environmental conditions, such as warmer water, overfishing or pollution. This can cause them to expel symbiotic algae that live in their tissues and lose their color. The coral loses its major source of food and is more susceptible to disease. In severe or prolonged cases the bleaching can be lethal to the corals.
Read the full article here: https://www.sciencedaily.com/releases/2016/02/160211142752.htm