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11-08-2010, 02:52 PM #1
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Systemic, granulomatous hexamitosis of farmed Atlantic salmon: Interaction with wild
By Trygve T. Poppe, Tor Atle Mo
Fisheries Research, Volume 17, Issues 1-2, Pathological Conditions of Wild Salmonids, June 1993, Pages 147-152, ISSN 0165-7836, DOI: 10.1016/0165-7836(93)90014-X.
The occurrence and pathology of a new manifestation of hexamitosis in Atlantic salmon is described. Since 1989, a hexamitid protozoan has caused severe granulomatous disease in adult Atlantic salmon raised in seawater cages in northern Norway. Most of the affected fish farms have a common link to one particular hatchery, while the fish in one of the farms have acquired the infection via infected processing water from a slaughter facility nearby, where Hexamita-infected fish from other farms have been slaughtered and processed.