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Book Intraseasonal and Interseasonal Variations in Average Weight of Columbia River Chinook Salmon Oncorhynchus Tschawytscha 1939 1945

Download or read book Intraseasonal and Interseasonal Variations in Average Weight of Columbia River Chinook Salmon Oncorhynchus Tschawytscha 1939 1945 written by Ralph Parks Silliman and published by . This book was released on 1947 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Spawning Abundance of Chinook Salmon in the Taku River from 1999 to 2007

Download or read book Spawning Abundance of Chinook Salmon in the Taku River from 1999 to 2007 written by Edgar L. Jones (III.) and published by . This book was released on 2010 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: Discusses results of a cooperative study involving the Alaska Department of Fish and Game, Department of Fisheries and Oceans Canada, and the Taku River Tlingit First Nation, which was conducted to estimate the number of spawning Chinook salmon Oncorhynchus tshawytscha in the Taku River from 1999 to 2007 using mark-recapture methodology.

Book Abundance of the Chinook Salmon Escapement on the Stikine River 1999

Download or read book Abundance of the Chinook Salmon Escapement on the Stikine River 1999 written by Keith A. Pahlke and published by . This book was released on 2000 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Post Release Attributes and Survival of Hatchery and Natural Fall Chinook Salmon in the Snake River

Download or read book Post Release Attributes and Survival of Hatchery and Natural Fall Chinook Salmon in the Snake River written by and published by . This book was released on 2001 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report summarizes results of research activities conducted in 1999 and years previous. In an effort to provide this information to a wider audience, the individual chapters in this report have been submitted as manuscripts to peer-reviewed journals. These chapters communicate significant findings that will aid in the management and recovery of fall chinook salmon in the Columbia River Basin. Abundance and timing of seaward migration of Snake River fall chinook salmon was indexed using passage data collected at Lower Granite Dam for five years. We used genetic analyses to determine the lineage of fish recaptured at Lower Granite Dam that had been previously PIT tagged. We then used discriminant analysis to determine run membership of PIT-tagged smolts that were not recaptured to enable us to calculate annual run composition and to compared early life history attributes of wild subyearling fall and spring chinook salmon. Because spring chinook salmon made up from 15.1 to 44.4% of the tagged subyearling smolts that were detected passing Lower Granite Dam, subyearling passage data at Lower Granite Dam can only be used to index fall chinook salmon smolt abundance and passage timing if genetic samples are taken to identify run membership of smolts. Otherwise, fall chinook salmon smolt abundance would be overestimated and timing of fall chinook salmon smolt passage would appear to be earlier and more protracted than is the case.

Book Abundance of the Chinook Salmon Escapement on the Alsek River 1999

Download or read book Abundance of the Chinook Salmon Escapement on the Alsek River 1999 written by Keith A. Pahlke and published by . This book was released on 2001 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Spawning Abundance of Chinook Salmon in the Taku River in 2003

Download or read book Spawning Abundance of Chinook Salmon in the Taku River in 2003 written by and published by . This book was released on 2006 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: A cooperative study involving the Department of Fisheries and Oceans Canada, the Alaska Department of Fish and Game, and the Taku River Tlingit First Nation was conducted to estimate the number of spawning Chinook salmon Oncorhynchus tshawytscha in the Taku River in 2003 with a mark-recapture experiment. Fish were captured at Canyon Island on the lower Taku River with fish wheels from May through August and were individually marked with back-sewn, solid-core spaghetti tags. All tagged fish were also batch marked with an opercle punch plus removal of the left axillary appendage. Sampling on the spawning grounds in tributaries was used to estimate the fraction of the population that had been marked. The estimated spawning abundance of small Chinook salmon ( 400 mm long; mid-eye to fork of tail) was 3,489 (SE = 1,052). Spawning abundance of medium-size Chinook salmon (401-659 mm) was estimated to be 16,780 (SE = 2,274). Finally, spawning abundance of large-size fish (= 660 mm) was estimated to be 36,435 (SE = 6,705), and the estimated total of all fish was 56,704 (SE = 7,158). The sum of the peak aerial survey counts of large spawning Chinook salmon conducted at five index tributaries of the Taku River was 16% of the mark-recapture estimate. Age 1.3 fish (1998 brood year) constituted an estimated 40% of the spawning population, followed by age 1.2 fish (1999 brood year), which constituted an estimated 29% of the population