08-31-2005, 04:27 PM
[font "Times"][size 3]CENTRAL POINT – Oregon Department of Fish and Wildlife biologists today announced the presence of an untreatable fish disease in rainbow trout at Cole Rivers Hatchery.[/size][/font]
[font "Times"][size 3] [/size][/font]
[font "Times"][size 3]Officials said Infectious Hematopoietic Necrosis Virus, or IHN, was found in eight raceways where 390,000 rainbow trout are being raised. The fish were destined for release next year in lakes and reservoirs in the Rogue and Coos basins, the Rogue River above Lost Creek Dam, and the Willamette Valley. [/size][/font]
[font "Times"][size 3] [/size][/font]
[font "Times"][size 3]“We don’t yet know the impacts for the 2006 stocked trout fishery,” said Randy Robart, Cole Rivers Hatchery manager. “Right now, we’re doing everything we can to avoid spreading the disease.” [/size][/font]
[font "Times"][size 3] [/size][/font]
[font "Times"][size 3]As of last Friday, 50,000 of the infected rainbow trout had died, noted Robart. [/size][/font]
[font "Times"][size 3] [/size][/font]
[font "Times"][size 3]During the next several weeks, ODFW managers will be discussing options for 2006 trout stocking in the Rogue and Coos basins and the Willamette Valley.[/size][/font]
[font "Times"][size 3] [/size][/font]
[font "Times"][size 3]IHN previously has been found in naturally spawning fall chinook salmon in the Rogue River and at Cole Rivers Hatchery in spring chinook and steelhead. The virus again was detected earlier this year in adult steelhead and spring chinook salmon during routine fish health monitoring, but no losses were observed. The only previous loss in the hatchery was in 1991 when one of six ponds of spring chinook fry was euthanized.[/size][/font]
[font "Times"][size 3]ODFW tests for pathogens and disease routinely during the rearing cycle from eggs to when the fish are released as smolts or legal-sized fish. The disease in the rainbow trout was first detected late last week. [/size][/font]
[font "Times"][size 3][/size][/font]
[font "Times"][size 3]IHN initially attacks the blood-forming tissues of the kidney. External symptoms include lethargy, darkening of the skin and hemorrhaging at the base of the fins.[/size][/font]
[signature]
[font "Times"][size 3] [/size][/font]
[font "Times"][size 3]Officials said Infectious Hematopoietic Necrosis Virus, or IHN, was found in eight raceways where 390,000 rainbow trout are being raised. The fish were destined for release next year in lakes and reservoirs in the Rogue and Coos basins, the Rogue River above Lost Creek Dam, and the Willamette Valley. [/size][/font]
[font "Times"][size 3] [/size][/font]
[font "Times"][size 3]“We don’t yet know the impacts for the 2006 stocked trout fishery,” said Randy Robart, Cole Rivers Hatchery manager. “Right now, we’re doing everything we can to avoid spreading the disease.” [/size][/font]
[font "Times"][size 3] [/size][/font]
[font "Times"][size 3]As of last Friday, 50,000 of the infected rainbow trout had died, noted Robart. [/size][/font]
[font "Times"][size 3] [/size][/font]
[font "Times"][size 3]During the next several weeks, ODFW managers will be discussing options for 2006 trout stocking in the Rogue and Coos basins and the Willamette Valley.[/size][/font]
[font "Times"][size 3] [/size][/font]
[font "Times"][size 3]IHN previously has been found in naturally spawning fall chinook salmon in the Rogue River and at Cole Rivers Hatchery in spring chinook and steelhead. The virus again was detected earlier this year in adult steelhead and spring chinook salmon during routine fish health monitoring, but no losses were observed. The only previous loss in the hatchery was in 1991 when one of six ponds of spring chinook fry was euthanized.[/size][/font]
[font "Times"][size 3]ODFW tests for pathogens and disease routinely during the rearing cycle from eggs to when the fish are released as smolts or legal-sized fish. The disease in the rainbow trout was first detected late last week. [/size][/font]
[font "Times"][size 3][/size][/font]
[font "Times"][size 3]IHN initially attacks the blood-forming tissues of the kidney. External symptoms include lethargy, darkening of the skin and hemorrhaging at the base of the fins.[/size][/font]
[signature]