Wednesday, January 19, 2011

Perkinsus infections of bivalve molluscs

Perkinsus organisms are a group of protistan (single-celled) parasites that can infect shellfish, especially bivalve molluscs, in various parts of the world, reports Denie Petty from the University of Florida IFAS Extension.

Several known species of Perkinsus can cause disease in shellfish. However, it is not always clear which species of shellfish will become infected or clinically diseased by which species of Perkinsus. It seems that Perkinsus-like organisms may be an incidental finding in some instances, and in other instances, the Perkinsus-like organisms appear to cause disease. There are most likely species of Perkinsus that have not yet been described.

Detection of these organisms in an infected animal may be possible during a routine necropsy; however, light infections may be difficult to diagnose. When Perkinsus is found, determining which species is present requires specialized molecular testing that few labs are able to do. Because of the potential importance of these organisms in shellfish disease, it is strongly recommended that an expert in shellfish diseases be consulted when Perkinsus is found or suspected. Read more...

This blog is written by Martin Little The Aquaculturists, published and supported by the International Aquafeed Magazine from Perendale Publishers.

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