Age and length composition of arctic grayling in Mendeltna Creek based upon hook-and-line and electrofishing catches during 1998
By: by James T. Fish.
Contributors: Alaska. Division of Sport Fish.
Series: Fishery data series -- no. 99-22.
Publisher: Alaska Dept. of Fish and Game, Division of Sport Fish, Research and Technical Services
Published: 1999
Place of publication: Anchorage
Language: eng
Number of pages: 28
Subjects: Arctic grayling -- Alaska -- Mendeltna Creek.; Fishery resources -- Alaska -- Mendeltna Creek.
Description: Age and length composition of Arctic grayling in Mendeltna Creek were estimated based upon hook-and-line and electrofishing catches during late spring and mid-summer, 1998. Data indicated that age-3 were caught in the greatest proportion during both May (p = 0.52, SE = 0.06) and July (p = 0.52, SE = 0.03). However, fish age-4 were caught in greater proportions during May (p = 0.35, SE = 0.06) than during July (p = 0.05, SE = 0.01), whereas fish age-2 were caught in greater proportions during July (p = 0.43, SE = 0.03) than during May (p = 0.13, SE = 0.04). Overall, larger (mean length = 235 mm FL, SD = 41.9) and older (maximum age of 9 years) fish were caught during late May, whereas smaller (mean length = 213 mm FL, SD = 37.6) and younger (maximum age of 6 years) fish were present during July. Interviews from seven anglers encountered during 1998 sampling activities suggest that a spring fishery does not occur on Mendeltna Creek. It is hypothesized that many adult Arctic grayling may enter Mendeltna Creek during early spring to spawn, and later emigrate to summer feeding locations outside Mendeltna Creek. Anglers probably target remaining Arctic grayling at two access locations on Mendeltna Creek throughout the summer and into the fall.
Notes: "September 1999."

Includes bibliographical references (p. 22-23).

Also issued online.