Ninety Years of Salmon Culture at Little White Salmon National Fish Hatchery PDF Download
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Author: William Roland Nelson Publisher: ISBN: Category : Fish hatcheries Languages : en Pages : 28
Book Description
Paper discribing the history of the Little White Salmon National Fish Hatchery (located on the Little White Salmon River, a tributary of the Columbia River in Oregon) built in 1896 to supplement the run of tule fall chinook salmon (Oncorhynchus tshawytscha) and now dedicated to rearing transplanted fall and spring chinook salmon stocks.
Author: William Roland Nelson Publisher: ISBN: Category : Fish hatcheries Languages : en Pages : 28
Book Description
Paper discribing the history of the Little White Salmon National Fish Hatchery (located on the Little White Salmon River, a tributary of the Columbia River in Oregon) built in 1896 to supplement the run of tule fall chinook salmon (Oncorhynchus tshawytscha) and now dedicated to rearing transplanted fall and spring chinook salmon stocks.
Author: William Roland Nelson Publisher: ISBN: Category : Chinook salmon Languages : en Pages : 22
Book Description
Paper discribing the history of the Little White Salmon National Fish Hatchery (located on the Little White Salmon River, a tributary of the Columbia River in Oregon) built in 1896 to supplement the run of tule fall chinook salmon (Oncorhynchus tshawytscha) and now dedicated to rearing transplanted fall and spring chinook salmon stocks.
Author: Jim Waldvogel Publisher: ISBN: Category : Chinook salmon Languages : en Pages : 48
Book Description
Age analysis for 22 years (1980 excluded) showed that the overall percentages for female spawners was 53% (4-year olds), 38% (3-year olds), and 9% (5-year olds). The age composition of male spawners showed a high degree of variability throughout the study. Male chinook of age 2, 3 and 4 were dominant annually, but 5- and 6- year old fish were present in most spawning seasons. All chinook carcasses from which scales were collected were also measured for length (over 120 samples in 22 years). Decreases in mean length were documented for all age classes for each of the El Nino episodes that occurred during the study (1982-1984; 1992-1993; 1997-1998). The decreases in mean length appeared to carry forward for each cohort's age class. The total number of chinook redds was tabulated by counting "fresh" redds during weekly spawning surveys. The mean number of redds was 117 for the 23-year period with a mean of 0.9 redds per adult salmon or 1.8 redds per female.
Author: Daniel W. Slater Publisher: ISBN: Category : Chinook salmon Languages : en Pages : 20
Book Description
Salmon specialists throughout the Pacific Coast indicate that the winter-run Chinook salmon is restricted to California's Sacramento River system. The characteristics and habits of the race are unique in the following respects: Fresh-water holding period, December to April; spawning period, April into July. The up-migration is concurrent with the late segments of the fall run, but the adults are distinguishable by the green condition of the gonads. The down-migration is concurrent with that of the spring-run fry, but the migrants are 2-inch or larger fingerlings. Evidence is lacking to determine whether there is an earlier down-migration of fry. The race appears to hold great promise as a stock to be introduced into areas where May-August temperatures are 42.5 degrees - 57.5 degrees F., for it supports superb angling during the fresh-water holding period. Water temperatures in May through August are seen as the factor limiting the natural extension of the range of the race.
Author: William Roland Nelson
Author: Eugene M. Maltzeff
Author: William Roland Nelson
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Author: Steven P. Cramer
Author: William Roland Nelson
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Author: Jim Waldvogel
Author: Daniel W. Slater
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Author: Howard Fuss