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Report: Yakoun River Steelhead: Some Aspects of their Life History; Population Size and Sport Fishery. 1982 - 83
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This report summarizes a steelhead tagging study performed during the 1982 - 83 winter season on the yakoun River. It is 35 pages long, contains an area map and numerous numerous tables. See long description for abstract.
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Author: De Leeuw, A.D.
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Old Reference Number: sk55
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Date Published: Jan 1987
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Report ID: 1658
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Audience: Government and Public
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Report abstract: During the 1982-83 winter season, a steelhead tagging study was undertaken on the Yakoun River, Queen Charlotte Islands. Three hundred and forty-nine steelhead were angled by study participants from October 1982 to April 1983. Of these, 17 were killed, 29 were released untagged
and 303 were successfully tagged and released. Of the latter, 32 were recaptured once, and 5 were recaptured twice. The greatest portion of the catch was taken in the upper river approximately 20 to 40 km. upstream of tidal water during November, December and January. The average number of days between date of original and recapture was 27.9 and ranged from 1 to 122 days. The average distance migrated was 4.3 km. and ranged from 0 to 40.8 km. The two age classes that dominated
were 3.3 (38.1%) and 4.3 (33.1%) followed by 2.3 (7.8%), 4.2 (5.7%), 4.1S1 (4.6%) and 3.1S1 (2.8%). The remaining 7 age classes accounted
for 8%. Repeat spawners comprised 12.1% of the total sample. Female steelhead were slightly more abundant (62%) than males, the former
averaged 76.8 cm fork length (range 58.6 - 91) while the latter averaged 78.8 cm (range 59
- 96.5). The steelhead population was calculated using multiple sample techniques and estimates were 1487, 1532, and 1637 fish. Wide confidence limits (1091 to 2368) were the result of low repeat capture rate. The sports fishery and results are discussed relative to a similar study undertaken the previous season.
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Report Type
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Fish and Aquatic Habitat Information |
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Subject
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Fish Species - Steelhead - Oncorhynchus mykiss |
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Region - Skeena |
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Fish and Fish Habitat - Stock Assessment |
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Watershed Groups - 940 - Graham Island Rivers |
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