Snake River fall chinook salmon broodstock program, 1983

Details

• Personal Author:
  Harrell, Lee Wiley
• Corporate Authors:
  Northwest and Alaska Fisheries Center (U.S.). Coastal Zone and Estuarine Studies Division ; United States. Bonneville Power Administration
• NOAA Program & Office:
  NMFS (National Marine Fisheries Service) ; NWFSC (Northwest Fisheries Science Center)
• Description:
  The objective of the Snake River Fall Chinook Salmon Broodstock Program is to hatch eggs from upriver stocks, rear the fish to maturity and spawning, and use the eggs for restoration purposes in the Snake River. Approximately 15,000 eyed eggs for 1980- and 1981-brood Snake River fall chinook salmon were obtained each winter in 1980 and 1981. Approximately 13,000 "button-up" fry from the 1982 brood were received in March 1983. Since August 1983, the mortality in the 1980-brood fish in marine net-pens has been unusually high. These losses are related to a systemic infection with a previously unreported fungal pathogen. Also responsible for considerable mortality are the approximately 25% maturing males in the population. As of 16 December 1983, 1,917 1980-brood Snake River fall chinook salmon, averaging 1,050 g, are being maintained in marine net-pens at the Manchester Marine Experimental Station, Manchester, Washington. Currently, 4,090 1981-brood chinook salmon with an average weight of 200 g are in net-pens at Manchester. The new fungal disease has also been observed in these fish, but it is causing minimal mortality. Approximately 6,000 1982-brood fish (15 g average weight) are currently at the Big Beef Creek Research Station, Seabeck, Washington, or have been acclimated to seawater. All the fish will be in marine net-pens at Manchester by May 1984.
• Series:
  Coastal zone and estuarine studies
• Format:
  PDF
• Document Type:
  Non-series Report
• Place as Subject:
  Snake River (Wyo.-Wash.)
• License:
  https://creativecommons.org/publicdomain/zero/1.0/
• Rights Information:
  CC0 Public Domain
• Compliance:
  Library
• Download URL:
  https://repository.library.noaa.gov/view/noaa/50260/noaa_50260_DS1.pdf
• File Type:
  [PDF - 2.34 MB]
• Collection(s):
  National Marine Fisheries Service (NMFS)
• Main Document Checksum:
  urn:sha256:26b40572494f7389b033e1166a8920650c8b841f419313ec99985aee205e00ab