Stock status of Chena River Arctic grayling in 1998
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Author
Contributions
- Alaska. Division of Sport Fish. - Contributor
Publication
1999 - Alaska Dept. of Fish and Game, Division of Sport Fish, Research and Technical Services, Anchorage, Alaska
Language
English
Word Count
11,000 words, Guess
Page Count
44 pages
Identifiers
- Open LibraryOL15558596M
Classifications
- LCCSH11 .A7542 no. 99-35
Alternate Titles
- Federal aid in sport fish restoration (Alaska)
Description
Status of the Arctic grayling Thymallus arcticus stock in the lower 144 km of the Chena River in 1998 was described by estimates of abundance, age and length composition, recruitment, and survival rate estimates during July. Estimated abundance was 27,563 (SE = 3,604) Arctic grayling 150 mm FL. Ages 1 through 13 were represented in the sample of which the largest percentage was age-5 at 25%. Stock-size (150 - 269 mm FL) and quality-size Arctic grayling (270 339 mm FL) each comprised 48% of the population. Recruitment of age-5 fish between 1997 and 1998 was 6,830 (SE = 1,050) Arctic grayling and annual survival during this period was 90.5% (SE = 11.0%). A comparison of the catches between May and July sampling showed a significantly higher proportion of large adult sized fish in May. In addition, the catch of the two samples when judged by effort suggested greater abundance of fish in May.
Subjects
Topics
Places
Genres
- Statistics
Series Statement
- Fishery data series -- no. 99-35.
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