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Book Age Sex and Legth i e Length Composition of Chinook Salmon Harvested in the 2008 2011 Lower Kuskokwim River Subsistence Fishery

Download or read book Age Sex and Legth i e Length Composition of Chinook Salmon Harvested in the 2008 2011 Lower Kuskokwim River Subsistence Fishery written by Zachary W. Liller and published by . This book was released on 2013 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Salmon Age Sex and Length Catalog for the Kuskokwim Area 2007

Download or read book Salmon Age Sex and Length Catalog for the Kuskokwim Area 2007 written by Douglas B. Molyneaux and published by . This book was released on 2008 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Salmon Age Sex and Length Catalog for the Kuskokwim Area 1998 Progress Report

Download or read book Salmon Age Sex and Length Catalog for the Kuskokwim Area 1998 Progress Report written by Douglas B. Molyneaux and published by . This book was released on 1999 with total page 431 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes both escapement and harvest (commercial) data for chinook, sockeye, chum, and coho salmon in the Tatlawiksuk, Kogrukluk, George, Aniak, Tuluksak, Kwethluk rivers (all tributaries of the Kuskokwim River) and for the Kanektok and Middle Fork Goodnews rivers.

Book Estimation of U S Canada Border Age composition of Yukon River Chinook Salmon 1982 2006

Download or read book Estimation of U S Canada Border Age composition of Yukon River Chinook Salmon 1982 2006 written by Toshihide Hamazaki and published by . This book was released on 2018 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study estimated age and sex composition of Canadian-origin Yukon River Chinook salmon at the United States (U.S.)-Canada border from 1982 to 2006. In 2012, the Joint Technical Committee of the Yukon River Panel (JTC) adopted a change to the assessment methods used to estimate U.S.-Canada border passage of Canadian-origin Chinook salmon from a fish wheel mark-recapture operated by Fisheries and Oceans Canada (DFO) to a sonar with a gillnet test fishery at Eagle operated jointly by the Alaska Department of Fish and Game (ADF&G) and DFO since 2005. Because the 2 fish capturing methodologies (fish wheel versus gillnet) resulted in different age-sex compositions, it was necessary to adjust the age-sex composition assessed by the fish wheel to those of the gillnet test fishery. Age, sex, and length (ASL) data were collected from fish sampled using both methods from 2005 to 2012, except 2009. Using 2007, 2008, 2010-2012 data, fish wheel age-sex compositions were adjusted using 2 methods: (1) age-sex selectivity and (2) length selectivity, and compared to the age-sex compositions observed in the gillnet test fishery. Although both methods performed similarly, the age-sex selectivity method was slightly better than the length selectivity method to adjust age-sex composition. However, because of uncertainties about the 2007-2012 data representing historical fish wheel data, the length selectivity method was chosen to adjust the 1982-2006 age-sex composition. Length selectivity converted 1982-2006 age-sex proportion are presented, and the uncertainties and limitations are discussed.

Book Salmon Age Sex and Length Catalog for the Kuskokwim Area 2005

Download or read book Salmon Age Sex and Length Catalog for the Kuskokwim Area 2005 written by Douglas B. Molyneaux and published by . This book was released on 2006 with total page 69 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Abundance Egg Production and Age sex length Composition of the Chinook Salmon Escapement in the Salcha River 1990

Download or read book Abundance Egg Production and Age sex length Composition of the Chinook Salmon Escapement in the Salcha River 1990 written by Alan Burkholder and published by . This book was released on 1991 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Historical Age and Length Composition of Sockeye Chinook Coho and Chum Salmon in Selected Commercial Fisheries and River Escapements 1979 2008 Upper Cook Inlet Alaska

Download or read book Historical Age and Length Composition of Sockeye Chinook Coho and Chum Salmon in Selected Commercial Fisheries and River Escapements 1979 2008 Upper Cook Inlet Alaska written by Terri M. Tobias and published by . This book was released on 2010 with total page 129 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this report is to summarize all available age, length and sex composition data that can be utilized from data collected since 1979. This report supersedes Regional Information Report 2A04-12 "Age and Length Composition of Sockeye, Chinook, Coho, and Chum Salmon from 1979-2003 and Sockeye Salmon Female Contribution from 1987-2003 in selected Commercial Fisheries and River Escapements, in Upper Cook Inlet, Alaska."

Book Growth and Degree of Maturity of Chinook Salmon in the Ocean

Download or read book Growth and Degree of Maturity of Chinook Salmon in the Ocean written by Willis Horton Rich and published by . This book was released on 1925 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Kuskokwim Area Age Sex and Size Composition of Salmon 1981

Download or read book Kuskokwim Area Age Sex and Size Composition of Salmon 1981 written by Alaska. Division of Commercial Fisheries and published by . This book was released on 1982 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Salmon Age and Sex Composition and Mean Lengths for the Yukon River Area 2014

Download or read book Salmon Age and Sex Composition and Mean Lengths for the Yukon River Area 2014 written by Shane M. Eaton and published by . This book was released on 2016 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biological data were collected from Chinook (Oncorhynchus tshawytscha), summer chum (O. keta), fall chum (O. keta), and coho (O. kisutch) salmon at 19 locations along the U.S. portion of the Yukon River drainage in 2014. Age, sex, and length (ASL) data were obtained from 2,969 Chinook, 4,637 summer chum, 3,120 fall chum, and 1,654 coho salmon from commercial and subsistence harvests, as well as test fisheries and escapement projects. Samples were collected from salmon caught with gillnets, dip nets, fish wheels, beach seines, weir traps, and from hand-picked carcass. Where available, escapement estimates from weir projects were separated into temporal segments (strata) and commercial harvests were separated by fishing periods. The ASL data collected during the corresponding stratum or period was applied to the corresponding escapement estimate or commercial harvest to generate estimates of proportions and numbers by age and sex. At test fishery projects ASL data were stratified into quartiles based on catch per unit effort (CPUE), commercial period, or mesh size. In 2014, age-1.3 Chinook salmon predominated from all of the test fishery and escapement projects; and most of the subsistence harvest samples. At many long standing projects 5-year-old (age-1.3 and age-2.2) Chinook salmon percentages were above the long-term and 5-year averages, whereas the 4-year-old (age-1.2 and age-2.1) and 6-year-old (age-1.4 and age-2.3) percentages were near or below the long-term and 5-year averages. Both summer and fall chum salmon samples were primarily composed of age-0.3 and age-0.4 fish. Age-2.1 coho salmon predominated in the commercial and test fishery samples.

Book Age Sex and Length for Chinook and Summer Chum Salmon Within the Yukon Area 2018

Download or read book Age Sex and Length for Chinook and Summer Chum Salmon Within the Yukon Area 2018 written by Sean D. Larson and published by . This book was released on 2020 with total page 69 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biological data were collected from Chinook Oncorhynchus tshawytscha and summer chum O. keta salmon along the United States portion of the Yukon River drainage in 2018. Age, sex, and length data were obtained from 4,774 Chinook and 5,907 summer chum salmon from commercial and subsistence harvests, test fisheries, and escapement projects. Samples were collected from salmon caught using gillnets, dip nets, fish wheels, beach seines, weir traps, and from hand-picked carcasses. Sex and length were recorded for nearly all salmon sampled. Ages were successfully estimated for 89% of the Chinook salmon and 93% of the summer chum salmon. This report provides a summary of the age, sex, and length data collected in 2018 for Chinook and summer chum salmon and is a single source document for historical summaries of long-term projects that collect age, sex, and length data from the Yukon Area. This report also provides a brief description of the Arctic-Yukon-Kuskokwim Database Management System (AYKDBMS) which is a publicly accessible online data archiving system that acts as an interface to query and download historical age, sex, and length data.

Book Abundance Egg Production and Age sex length Composition of the Chinook Salmon Escapement in the Salcha River 1992

Download or read book Abundance Egg Production and Age sex length Composition of the Chinook Salmon Escapement in the Salcha River 1992 written by Cal Skaugstad and published by . This book was released on 1993 with total page 43 pages. Available in PDF, EPUB and Kindle. Book excerpt: Examination of chinook salmon (Oncorhynchus tshawytscha) in the Salcha River near Fairbanks, in central Alaska, to estimate the return rate and the fish stocks.