Biological Manipulation of Migration Rate: The Use of Advanced Photoperiod to Accelerate Smoltification in Yearling Chinook Salmon, Annual Report 1989.

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Description

Research was conducted to assess the feasibility of biologically manipulating physiological development and migratory behavior of yearling spring chinook salmon, Oncorhynchus tshawytscha. At Dworshak National Fish Hatchery, treatment groups were exposed to a variety of advanced photoperiod cycles preceding release to accelerate smolt development. Physiological development and migratory performance were described for all groups. The treatments included a 14-week exposure to a 3-month advanced photoperiod cycle, an 18-week exposure to a 3-month advanced photoperiod cycle, and an 18-week exposure to a 4-month advanced photoperiod cycle. Two additional groups, an 18-week exposure to a 3-month advanced photoperiod and a control equivalent, ... continued below

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41 pages

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Giorgi, Albert E.; Muir, William D. & Zaugg, Waldo S. January 1, 1991.

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Description

Research was conducted to assess the feasibility of biologically manipulating physiological development and migratory behavior of yearling spring chinook salmon, Oncorhynchus tshawytscha. At Dworshak National Fish Hatchery, treatment groups were exposed to a variety of advanced photoperiod cycles preceding release to accelerate smolt development. Physiological development and migratory performance were described for all groups. The treatments included a 14-week exposure to a 3-month advanced photoperiod cycle, an 18-week exposure to a 3-month advanced photoperiod cycle, and an 18-week exposure to a 4-month advanced photoperiod cycle. Two additional groups, an 18-week exposure to a 3-month advanced photoperiod and a control equivalent, were reared at an elevated water temperature (11{degrees}C) for 2 weeks prior to release. Results indicated that the treated fish which were the most physiologically advanced at release were detected in the highest proportion at collector dams and also migrated fastest downstream. 26 refs., 10 figs., 5 tabs.

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41 pages

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OSTI; NTIS; GPO Dep.

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  • Other: DE91009703
  • Report No.: DOE/BP-50301-2
  • Grant Number: AI79-88BP50301
  • DOI: 10.2172/5859242 | External Link
  • Office of Scientific & Technical Information Report Number: 5859242
  • Archival Resource Key: ark:/67531/metadc1101704

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  • January 1, 1991

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  • Feb. 18, 2018, 3:59 p.m.

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Giorgi, Albert E.; Muir, William D. & Zaugg, Waldo S. Biological Manipulation of Migration Rate: The Use of Advanced Photoperiod to Accelerate Smoltification in Yearling Chinook Salmon, Annual Report 1989., report, January 1, 1991; United States. (https://digital.library.unt.edu/ark:/67531/metadc1101704/: accessed March 23, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.