Age Sex And Length For Chinook And Summer Chum Salmon Within The Yukon Area 2018

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

Author : Sean D. Larson
Publisher :
ISBN 13 :
Total Pages : 69 pages
Book Rating : 4.:/5 (116 download)

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Book Synopsis Age, Sex, and Length for Chinook and Summer Chum Salmon Within the Yukon Area, 2018 by : Sean D. Larson

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.

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

Author : Shane M. Eaton
Publisher :
ISBN 13 :
Total Pages : 108 pages
Book Rating : 4.:/5 (957 download)

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Book Synopsis Salmon Age and Sex Composition and Mean Lengths for the Yukon River Area, 2014 by : Shane M. Eaton

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.

Salmon Age and Sex Composition and Mean Lengths for the Yukon River Area, 2011

Author : Kyle Schumann
Publisher :
ISBN 13 :
Total Pages : 184 pages
Book Rating : 4.:/5 (99 download)

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Book Synopsis Salmon Age and Sex Composition and Mean Lengths for the Yukon River Area, 2011 by : Kyle Schumann

Download or read book Salmon Age and Sex Composition and Mean Lengths for the Yukon River Area, 2011 written by Kyle Schumann and published by . This book was released on 2014 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: Report discusses biological data collected from Chinook Oncorhynchus tshawytscha, summer chum O. keta, fall chum O. keta, and coho salmon O. kisutch at 34 locations along the U.S. portion of the Yukon River drainage in 2011.

Salmon Age and Sex Composition and Mean Lengths for the Yukon River Area, 2010

Author : Kyle Schumann
Publisher :
ISBN 13 :
Total Pages : 202 pages
Book Rating : 4.:/5 (768 download)

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Book Synopsis Salmon Age and Sex Composition and Mean Lengths for the Yukon River Area, 2010 by : Kyle Schumann

Download or read book Salmon Age and Sex Composition and Mean Lengths for the Yukon River Area, 2010 written by Kyle Schumann and published by . This book was released on 2011 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: Report discusses biological data collected from Chinook Oncorhynchus tshawytscha, summer chum O. keta, fall chum O. keta, and coho salmon O. kisutch at 32 locations along the U.S. portion of the Yukon River drainage in 2010.

Salmon Age and Sex Composition and Mean Lengths for the Yukon River Area, 2012

Author : Kyle Schumann
Publisher :
ISBN 13 :
Total Pages : 156 pages
Book Rating : 4.:/5 (99 download)

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Book Synopsis Salmon Age and Sex Composition and Mean Lengths for the Yukon River Area, 2012 by : Kyle Schumann

Download or read book Salmon Age and Sex Composition and Mean Lengths for the Yukon River Area, 2012 written by Kyle Schumann and published by . This book was released on 2014 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: Report discusses biological data collected from Chinook Oncorhynchus tshawytscha, summer chum O. keta, fall chum O. keta, and coho salmon O. kisutch at 34 locations along the U.S. portion of the Yukon River drainage in 2012.

Salmon Age and Sex Composition and Mean Lengths for the Yukon River Area, 2013

Author : Shane M. Eaton
Publisher :
ISBN 13 :
Total Pages : 134 pages
Book Rating : 4.:/5 (99 download)

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Book Synopsis Salmon Age and Sex Composition and Mean Lengths for the Yukon River Area, 2013 by : Shane M. Eaton

Download or read book Salmon Age and Sex Composition and Mean Lengths for the Yukon River Area, 2013 written by Shane M. Eaton and published by . This book was released on 2014 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: Report discusses biological data collected from Chinook Oncorhynchus tshawytscha, summer chum O. keta, fall chum O. keta, and coho salmon O. kisutch at 29 locations along the U.S. portion of the Yukon River drainage in 2013.

Salmon Age and Sex Composition and Mean Lengths for the Yukon River Area, 2009

Author : Maureen H. Horne-Brine
Publisher :
ISBN 13 :
Total Pages : 104 pages
Book Rating : 4.:/5 (741 download)

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Book Synopsis Salmon Age and Sex Composition and Mean Lengths for the Yukon River Area, 2009 by : Maureen H. Horne-Brine

Download or read book Salmon Age and Sex Composition and Mean Lengths for the Yukon River Area, 2009 written by Maureen H. Horne-Brine and published by . This book was released on 2011 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: Report discusses biological data collected from Chinook Oncorhynchus tshawytscha, summer chum O. keta, fall chum O. keta, and coho salmon O. kisutch at 34 locations along the U.S. portion of the Yukon River drainage in 2009.

Age, Sex, and Size of Yukon River Salmon Catch and Escapement, 1985

Author : Lawrence S. Buklis
Publisher :
ISBN 13 :
Total Pages : 102 pages
Book Rating : 4.:/5 (174 download)

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Book Synopsis Age, Sex, and Size of Yukon River Salmon Catch and Escapement, 1985 by : Lawrence S. Buklis

Download or read book Age, Sex, and Size of Yukon River Salmon Catch and Escapement, 1985 written by Lawrence S. Buklis and published by . This book was released on 1986 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt: Commercial and subsistence harvest of chinook, summer and fall chum, and coho salmon for the Yukon River in Yukon and Alaska in 1985 is presented by age, sex, fishing district, and gear type. Includes all Yukon River salmon age-sex-size data collected in 1985.

The Length, Age, and Sex Ratio of Chum Salmon in the Alaska Peninsula, Kodiak Island, and Prince William Sound Areas of Alaska

Author : Fredrik V. Thorsteinson
Publisher :
ISBN 13 :
Total Pages : 92 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis The Length, Age, and Sex Ratio of Chum Salmon in the Alaska Peninsula, Kodiak Island, and Prince William Sound Areas of Alaska by : Fredrik V. Thorsteinson

Download or read book The Length, Age, and Sex Ratio of Chum Salmon in the Alaska Peninsula, Kodiak Island, and Prince William Sound Areas of Alaska written by Fredrik V. Thorsteinson and published by . This book was released on 1963 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Age, Sex, and Size of Yukon River Salmon Catch and Escapement, 1984

Author : Lawrence S. Buklis
Publisher :
ISBN 13 :
Total Pages : 93 pages
Book Rating : 4.:/5 (851 download)

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Book Synopsis Age, Sex, and Size of Yukon River Salmon Catch and Escapement, 1984 by : Lawrence S. Buklis

Download or read book Age, Sex, and Size of Yukon River Salmon Catch and Escapement, 1984 written by Lawrence S. Buklis and published by . This book was released on 1985 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt: Commercial and subsistence harvest of chinook, summer and fall chum and coho salmon for the Yukon River in Alaska and the Yukon Territory in 1984 are presented by age, sex, fishing district and gear type.

Chinook Salmon Age, Sex, and Length Analysis from Selected Escapement Projects on the Yukon River

Author : Karen Hyer
Publisher :
ISBN 13 :
Total Pages : 62 pages
Book Rating : 4.:/5 (2 download)

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Book Synopsis Chinook Salmon Age, Sex, and Length Analysis from Selected Escapement Projects on the Yukon River by : Karen Hyer

Download or read book Chinook Salmon Age, Sex, and Length Analysis from Selected Escapement Projects on the Yukon River written by Karen Hyer and published by . This book was released on 2005 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: Anecdotal information from fishers along the Yukon River suggests that the length of chinook salmon harvested and the proportion of female Chinook salmon in the run have decreased over time. To determine whether sex composition, size, age, and size-at-age of chinook salmon in spawning escapements have experienced a basin-wide decline over time, we examined escapement data from the Andreafsky, Anvik, Gisasa, Salcha, Chena, and Big Salmon Rivers. The scope of the analysis is limited to a relatively small number of spawning tributaries over a relatively short time period during which both fisheries and environmental changes have occurred confounding the ability to establish the sources of the decreasing size trend in Yukon River Chinook salmon.

Length-girth, Length-weight, and Fecundity of Yukon River Chinook Salmon Oncorhynchus Tshawytscha

Author : James R. Jasper
Publisher :
ISBN 13 :
Total Pages : 21 pages
Book Rating : 4.:/5 (811 download)

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Book Synopsis Length-girth, Length-weight, and Fecundity of Yukon River Chinook Salmon Oncorhynchus Tshawytscha by : James R. Jasper

Download or read book Length-girth, Length-weight, and Fecundity of Yukon River Chinook Salmon Oncorhynchus Tshawytscha written by James R. Jasper and published by . This book was released on 2006 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: Report discusses morphometric data, including length, girth, and weight measurements, that were obtained along with age and sex data from Yukon River chinook salmon, Oncorhynchus tshawytscha, caught in the test fisheries of the ADF & G sonar projects located near the villages of Pilot Station and Eagle in 2005.

Potential Causes of Size Trends in Yukon River Chinook Salmon Populations

Author :
Publisher :
ISBN 13 :
Total Pages : 34 pages
Book Rating : 4.:/5 (2 download)

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Book Synopsis Potential Causes of Size Trends in Yukon River Chinook Salmon Populations by :

Download or read book Potential Causes of Size Trends in Yukon River Chinook Salmon Populations written by and published by . This book was released on 2006 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: Concerns regarding the size and sex composition of Yukon River Chinook salmon, Oncorhynchus tshawytscha, have been expressed in public meetings for over a decade. However, reports of small size and low numbers of females have become increasingly common in recent years, and apprehension over the long-term health of the stock has grown within the drainage. In response to these reports, the Salmon Size Subcommittee of the US/Canada Yukon River Joint Technical Committee was formed and charged with advising the Committee, and thereby the US/Canada Yukon River Panel, with respect to changes in chinook salmon age, sex, and size composition. This report, which summarizes the findings of prior investigations and the scientific literature on factors that influence salmon morphology, represents the first product of the subcommittee.

Estimation of U.S.-Canada Border Age-composition of Yukon River Chinook Salmon, 1982-2006

Author : Toshihide Hamazaki
Publisher :
ISBN 13 :
Total Pages : 66 pages
Book Rating : 4.:/5 (16 download)

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Book Synopsis Estimation of U.S.-Canada Border Age-composition of Yukon River Chinook Salmon, 1982-2006 by : Toshihide Hamazaki

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.

Abundance, age, sex, and length of chinook, sockeye, coho, and chum salmon returning to upper Cook Inlet, Alaska, in 1990

Author : David L. Waltemyer
Publisher :
ISBN 13 :
Total Pages : 88 pages
Book Rating : 4.:/5 (289 download)

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Book Synopsis Abundance, age, sex, and length of chinook, sockeye, coho, and chum salmon returning to upper Cook Inlet, Alaska, in 1990 by : David L. Waltemyer

Download or read book Abundance, age, sex, and length of chinook, sockeye, coho, and chum salmon returning to upper Cook Inlet, Alaska, in 1990 written by David L. Waltemyer and published by . This book was released on 1993 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Yukon River Chinook Salmon Comparative Mesh Size Study

Author : Kathrine G. Howard
Publisher :
ISBN 13 :
Total Pages : 23 pages
Book Rating : 4.:/5 (78 download)

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Book Synopsis Yukon River Chinook Salmon Comparative Mesh Size Study by : Kathrine G. Howard

Download or read book Yukon River Chinook Salmon Comparative Mesh Size Study written by Kathrine G. Howard and published by . This book was released on 2010 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gillnet mesh size in the Yukon River Chinook salmon fishery has been unrestricted, leading many to believe that the fishery is size selective. The presented study used a test fishery in Yukon River District 1 near Emmonak to investigate catch composition of 7, 7.5, and 8-inch stretch-mesh drift gillnets. Age, sex, length, weight and girth (ASLWG) characteristics of Chinook salmon, and the species composition of the catch were examined. Comparisons among mesh sizes and with temporally congruent data from Lower Yukon River commercial and other test fisheries are included. Overall patterns indicate that larger mesh sizes catch a greater proportion of older fish, more Chinook relative to chum salmon, a greater proportion of females, and more larger fish with respect to length, weight and girth. This study provides important insight for management strategies and regulations concerning mesh size for Yukon River fisheries, as well as improves our understanding of potential effects of size-selective fishing.

Age, sex and size composition of chinook, sockeye, coho, and chum salmon returning to Upper Cook Inlet, Alaska, in 1991

Author : David L. Waltemyer
Publisher :
ISBN 13 :
Total Pages : 95 pages
Book Rating : 4.:/5 (333 download)

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Book Synopsis Age, sex and size composition of chinook, sockeye, coho, and chum salmon returning to Upper Cook Inlet, Alaska, in 1991 by : David L. Waltemyer

Download or read book Age, sex and size composition of chinook, sockeye, coho, and chum salmon returning to Upper Cook Inlet, Alaska, in 1991 written by David L. Waltemyer and published by . This book was released on 1994 with total page 95 pages. Available in PDF, EPUB and Kindle. Book excerpt: