Current thinking on how the Toxoplasma gondii parasite invades its host is incorrect, according to a study published today in Nature Methods describing a new technique to knock out genes. The findings could have implications ...
Definition. Coral bleaching is a process whereby the coral colonies lose their colour, either due to the loss of pigments by microscopic algae (zooxanthellae) living in symbiosis with their host organisms (polyps), or because these zooxanthellae have been expelled.
The mass coral bleaching events that have occurred throughout the tropics over the last. decade have provided unprecedented opportunity, and motivation, to study this. phenomenon.As a result,knowledge about the causes and consequences of coral bleaching. has increased substantially in recent years.