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.
And, although bleaching and dissolving can happen independently and donât always occur side by side, both processes weaken coral reefs and can exacerbate one another â meaning the Florida reef tract is in an especially vulnerable state.