Tuesday, May 31, 2011

Bacterial coldwater disease: Review And Current Status

Bacterial coldwater disease (BCWD) was first noted in the United States in 1941. The bacterium Flavobacterium psychrophilum was identified and proven to be the cause of outbreaks. Outbreaks occurred in salmonids at low water temperatures (43-50°F) and the disease gained the common name of bacterial coldwater disease or low-temperature disease. It was also called peduncle disease due to characteristic fraying and erosion of the caudal fin and caudal peduncle.

The disease was only found in North American salmonids until the 1980s, when it was found in Germany, France and other European countries, and is now found worldwide. In Europe, the disease is called rainbow trout fry syndrome or fry mortality syndrome. The disease has subsequently been found in non-salmonid hosts, including ayu, common and Crucian carp, European eels, forktongue and lake gobies, Japanese dace, pale chubs, perch, roach and tench. The bacteria are ubiquitous in freshwater systems and may be part of the normal flora of gills and skin of fish. 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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