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Thursday, August 6, 2020 | History

2 edition of Abundance, egg production, and age-sex-length composition of the chinook salmon escapement in the Salcha River, 1992 found in the catalog.

Abundance, egg production, and age-sex-length composition of the chinook salmon escapement in the Salcha River, 1992

Calvin Skaugstad

Abundance, egg production, and age-sex-length composition of the chinook salmon escapement in the Salcha River, 1992

by Calvin Skaugstad

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Published by Alaska Dept. of Fish and Game, Division of Sport Fish in Anchorage, Alaska .
Written in English

    Subjects:
  • Chinook salmon -- Alaska -- Salcha River.

  • About the Edition

    In 1992, the abundance of chinook salmon Oncorhynchus tshawytscha that returned to spawn in the Salcha River near Fairbanks, Alaska, was estimated using a mark-recapture experiment. A riverboat equipped with electrofishing gear was used to capture 434 chinook salmon in late July and early August. Captured chinook salmon were marked with jaw tags, fin clipped, and released. In early August, 957 chinook salmon carcasses were collected of which 52 were marked. The estimate of chinook salmon abundance was 7,862 (SE = 975). The proportions of males and females were 0.64 and 0.36, respectively. Males spent 1 to 5 years in the ocean while most females spent 3 to 5 years. The estimate of potential egg production for the 1992 escapement was 27 million eggs (SE = 2.1 million). A count of chinook salmon during an aerial survey on 3 August was 1,484, about 19% of the abundance estimate from the mark-recapture experiment.

    Edition Notes

    Other titlesFederal aid in sport fish restoration (Alaska)
    Statementby Cal Skaugstad.
    SeriesFishery data series -- no. 93-23.
    ContributionsAlaska. Division of Sport Fish.
    The Physical Object
    Paginationv, 43 p. :
    Number of Pages43
    ID Numbers
    Open LibraryOL15578487M


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Abundance, egg production, and age-sex-length composition of the chinook salmon escapement in the Salcha River, 1992 by Calvin Skaugstad Download PDF EPUB FB2