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Report: Observations on Cutthroat Trout of the Mosquito Lake System Queen Charlotte Islands (00028MORI)
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If you have any questions on the information presented, or require additional report data or attachments, please contact the Report Contact
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Resident juvenile and adult cutthroat trout (Oncorhynchus clarki) were sampled from February 1983 to July 1984 in Mosquito Lake and its
tributaries on the Queen Charlotte Islands. Results are discussed relative to other coastal cutthroat trout populations.
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Author: de Leeuw, A.D.
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Old Reference Number: sk57
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Date Published: Mar 1987
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Report ID: 2557
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Audience: Government and Public
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Resident juvenile and adult cutthroat trout (Oncorhynchus clarki) were sampled from February 1983 to July 1984 in Mosquito Lake and its
tributaries on the Queen Charlotte Islands. Young of the year trout found in two small (2 to 5 in width) tributary streams at average densities of 2.73 and 2.03 per m2 while in a larger (14 m width) stream the density was .36 per m2. Parr utilized these streams at .27, .43, and .05 per m2 respectively. Fry were generally found in shallow riffles, while parr
utilized primarily pools. Fork length of lake fish averaged about 330 mm and ranged from 110 to 610 mm. Within streams trout lengths ranged from 20 to 145 mm. The most abundant age group in streams during the summer was 0 plus (84 percent), followed by 1 plus (13 percent), 2 plus (2.5 percent) and some 3 plus and 4 plus (.5 percent). In the lake, age 5 plus was the most numerous (30.7 percent) followed by 4 plus (26.2 percent), 3 plus (26.2 percent), 6 plus (10.7 percent) and 2 plus (6.2 percent). Of the 128 adult lake cutthroat sampled, 40 percent were males. Only 29 percent of all lake fish sampled were sexually mature, the majority of these were females. All fish in excess of 420 mm were mature females. Fecundity ranged from 617 to 742 for four females sampled.Results are discussed relative to other coastal cutthroat trout populations.
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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 - Cutthroat Trout (General) - Oncorhynchus clarki |
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Region - Skeena |
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Fish and Fish Habitat - Lake |
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Fish and Fish Habitat - Stock Assessment |
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Watershed Groups - 950 - Moresby Island Rivers |
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