Imprinting Salmon and Steelhead Trout for Homing, 1981 Annual Report of Research.

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Description

The National Marine Fisheries Service, under contract to the Bonneville Power Administration, began conducting research on imprinting Pacific salmon and steelhead for homing in 1978. The juvenile marking phase was completed in 1980; over 4 million juvenile salmon and steelhead were marked and released in 23 experiments. The primary objectives were to determine: (1) a triggering mechanism to activate the homing imprint, (2) if a single imprint or a sequential imprint is necessary to assure homing, and (3) the relationship between the physiological condition of fish and their ability to imprint. Research in 1981 concentrated on: (1) recovering returning adults ... continued below

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65 pages

Creation Information

Slatick, Emil September 1, 1982.

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Description

The National Marine Fisheries Service, under contract to the Bonneville Power Administration, began conducting research on imprinting Pacific salmon and steelhead for homing in 1978. The juvenile marking phase was completed in 1980; over 4 million juvenile salmon and steelhead were marked and released in 23 experiments. The primary objectives were to determine: (1) a triggering mechanism to activate the homing imprint, (2) if a single imprint or a sequential imprint is necessary to assure homing, and (3) the relationship between the physiological condition of fish and their ability to imprint. Research in 1981 concentrated on: (1) recovering returning adults from previous experiments, (2) analyzing completed 1978 steelhead and 1980 coho salmon experiments, and (3) preliminary analyzing 1979 and 1980 fall chinook salmon experiments. Seven experimental groups are discussed: four steelhead, two fall chinook salmon, and one coho salmon. In four groups, survival was enhanced by the imprinting-transportation procedures. Homing back to the hatchery area was successful in two groups, and generally, unless there were extenuating circumstances (eruption of Mount St. Helens, disease problem, etc.), greater returns to user groups were evident.

Physical Description

65 pages

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  • Report No.: DOE/BP-0023
  • Grant Number: 1981BP27891
  • DOI: 10.2172/912862 | External Link
  • Office of Scientific & Technical Information Report Number: 912862
  • Archival Resource Key: ark:/67531/metadc881482

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  • September 1, 1982

Added to The UNT Digital Library

  • Sept. 22, 2016, 2:13 a.m.

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Slatick, Emil. Imprinting Salmon and Steelhead Trout for Homing, 1981 Annual Report of Research., report, September 1, 1982; United States. (digital.library.unt.edu/ark:/67531/metadc881482/: accessed August 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.