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Tuesday, May 12, 2020 | History

2 edition of Assessment of selected stocks of arctic grayling in streams of the Seward Peninsula, Alaska during 1992 found in the catalog.

Assessment of selected stocks of arctic grayling in streams of the Seward Peninsula, Alaska during 1992

Alfred L. DeCicco

Assessment of selected stocks of arctic grayling in streams of the Seward Peninsula, Alaska during 1992

by Alfred L. DeCicco

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  • 36 Currently reading

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

    Subjects:
  • Arctic Grayling -- Alaska -- Seward Peninsula.,
  • Fish populations -- Alaska -- Seward Peninsula.

  • About the Edition

    Stock status of Arctic grayling Thymallus arcticus was investigated in the Snake, Nome, Pilgrim and Sinuk rivers of the Seward Peninsula during 1992. Population abundance, age composition, length composition and length-at-age were estimated. Survival rates from 1989 to 1990 and from 1990 to 1991 were estimated for Arctic grayling in the Sinuk River. The number of Arctic grayling over 249 millimeters in fork length was estimated at 2,418 fish (standard error = 200) in a 48 kilometer section of the Snake River. The density was 50 fish/kilometer. Captured Arctic grayling ranged from 174 to 496 millimeters in fork length and from 2 to 11 years in age. The estimated abundance of Arctic grayling over 269 millimeters in fork length in a 30 kilometer section of the Nome River was 725 (standard error = 93) or 24 fish/kilometer. Captured Arctic grayling ranged from 223 to 490 millimeters in fork length and from 2 to 12 years in age. In a 12 kilometer section of the Pilgrim River, the estimated abundance of Arctic grayling > 269 millimeters in fork length was 1,263 fish (standard error = 199) or 105 fish/kilometer. Captured fish ranged from 159 to 489 millimeters in fork length and from 3 to 12 years of age. The estimated abundance of Arctic grayling > 324 millimeters in fork length in a 40 kilometer section of the Sinuk River just prior to August 1991 was 919 fish (standard error = 196) or 23 fish/kilometer. Arctic grayling sampled in 1992 ranged from 104 to 521 millimeters in fork length and from 1 to 15 years in age. The modified Jolly - Seber estimate of survival from 1989 to 1990 was 1.00 (standard error = 0.05) and from 1990 to 1991 was 0.65 (standard error = 0.13).

    Edition Notes

    Statementby Alfred L. DeCicco.
    SeriesFishery data series -- no. 93-36.
    ContributionsAlaska. Division of Sport Fish.
    The Physical Object
    Paginationv, 46 p. :
    Number of Pages46
    ID Numbers
    Open LibraryOL15578317M


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Assessment of selected stocks of arctic grayling in streams of the Seward Peninsula, Alaska during 1992 by Alfred L. DeCicco Download PDF EPUB FB2