Dolly Varden char and sea-run cutthroat trout populations at Auke Lake, Southeast Alaska, during 1997
By: by Judith L. Lum ... [et al.].
Contributors: Lum, Judith L.; Alaska. Division of Sport Fish.
Series: Fishery data series -- no. 98-43.
Publisher: Alaska Dept. of Fish and Game, Division of Sport Fish
Published: 1998
Place of publication: Douglas, AK
Language: eng
Number of pages: 54
Subjects: Cutthroat trout -- Alaska -- Auke Lake -- Statistics.; Dolly Varden (Trout) -- Alaska -- Auke Lake -- Statistics.; Fish populations -- Alaska -- Auke Lake -- Statistics.
Description: The Auke Creek weir, in Juneau, Alaska, was operated in 1997 to intercept and enumerate migrating Dolly Varden char Salvelinus malma, sea-run cutthroat Oncorhynchus clarki and steelhead trout O. mykiss, sockeye O. nerka, coho O. kisutch, pink O. gorbuscha, and chum O. keta salmon. Abundance for downstream migrant Dolly Varden from March through June was 10,506, and the upstream counts from July though early November was 5,714, or just over half the emigrating population. Estimated mean fork length of the downstream Dolly Varden was 277 mm (SE = 2.68 mm), and the mean fork length of upstream migrants was 272 mm (SD = 61.9 mm). Abundance for downstream cutthroat trout in the spring was 500, and the upstream count in the fall was 467. Mean fork length of downstream migrants was 265 mm (SD = 51.9 mm) and of upstream migrants was 271 mm (SD = 61.5 mm). In spring, 495 cutthroat trout were successfully PIT (Passive Integrated Transponder) tagged prior to release. Fall counts indicated a tag retention rate of 94.6%.
Notes: "December, 1998."

Includes bibliographical references (p. 13).

Also issued online.