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.
High water temperatures can directly induce bleaching, and in other instances it is caused a bacteria related to cholera. Photo: U.S. Geological Survey. o Black Band Disease is one of the most common and widespread coral diseases, affecting reefs in the Caribbean, Australia, Philippines and East Africa.