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.
More than a third of world's coral reef faces major bleaching event. A massive, global coral bleaching event is underway which could affect 38 per cent of the world's reefs by year's end, including the Great Barrier Reef, scientists have revealed.