Evolution of observer methods to obtain genetic material from Chinook salmon bycatch in the Alaska pollock fishery.
A well-designed sampling program addresses specified objectives under the realities of limited resources. Chinook salmon (Oncorhynchus tshawytscha) is a species of great importance to the people of the North Pacific. Concerns over the bycatch of this species have led to actions that increase the mon...
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U.S. Department of Commerce, National Oceanic and Atmospheric Administration, National Marine Fisheries Service, Alaska Fisheries Science Center
2015
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Online Access: | https://dx.doi.org/10.7289/v5mg7mff https://repository.library.noaa.gov/view/noaa/4842 |
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ftdatacite:10.7289/v5mg7mff 2023-05-15T13:09:26+02:00 Evolution of observer methods to obtain genetic material from Chinook salmon bycatch in the Alaska pollock fishery. Faunce, Craig Howard, 1970- 2015 https://dx.doi.org/10.7289/v5mg7mff https://repository.library.noaa.gov/view/noaa/4842 unknown U.S. Department of Commerce, National Oceanic and Atmospheric Administration, National Marine Fisheries Service, Alaska Fisheries Science Center Public Domain PDM Chinook salmon--Alaska--Genetic aspects Chinook salmon--Effect of fishing on--Racial analysis--Alaska--Methodology article-journal Text ScholarlyArticle 2015 ftdatacite https://doi.org/10.7289/v5mg7mff 2021-11-05T12:55:41Z A well-designed sampling program addresses specified objectives under the realities of limited resources. Chinook salmon (Oncorhynchus tshawytscha) is a species of great importance to the people of the North Pacific. Concerns over the bycatch of this species have led to actions that increase the monitoring and data requirements for the trawl pollock (Gadus chalcogrammus) fisheries of Alaska. Since 2005, the North Pacific Observer Program (observer program) has collected tissues from Chinook salmon bycatch for genetic stock composition analysis. The sampling design used to collect these tissues has changed in response to regulations that dictate how observers are deployed into the fleet. In 2011, a systematic random sampling (SYS) of individual bycatch salmon from every trawl pollock delivery was adopted by the observer program. This method requires that a census of Chinook salmon bycatch is achieved. However, regulations that enable the observer program to confidently achieve a census are lacking for the Gulf of Alaska (GOA) compared to the Bering Sea and Aleutian Islands. Consequently, a census of pollock deliveries was not obtained in the GOA during 2012 or 2013. Restructure of the observer program in 2013 eliminated fixed regulations governing partial observer coverage allowing for alternative sampling designs to be explored. Simulations using seasonal data show that an alternative simple random sampling (SRS) method would have consistently resulted in the collection of more genetic tissues at a lower cost than SYS. The SRS was formally incorporated into the 2014 and 2015 sampling design of the observer program for the GOA. The new annual process of making revisions to the observer program based on priorities and policy allows for rapid changes to the observer sampling design to meet genetic stock composition analyses and other fishery management needs. Text alaska pollock Bering Sea Alaska Aleutian Islands DataCite Metadata Store (German National Library of Science and Technology) Bering Sea Gulf of Alaska Pacific |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Chinook salmon--Alaska--Genetic aspects Chinook salmon--Effect of fishing on--Racial analysis--Alaska--Methodology |
spellingShingle |
Chinook salmon--Alaska--Genetic aspects Chinook salmon--Effect of fishing on--Racial analysis--Alaska--Methodology Faunce, Craig Howard, 1970- Evolution of observer methods to obtain genetic material from Chinook salmon bycatch in the Alaska pollock fishery. |
topic_facet |
Chinook salmon--Alaska--Genetic aspects Chinook salmon--Effect of fishing on--Racial analysis--Alaska--Methodology |
description |
A well-designed sampling program addresses specified objectives under the realities of limited resources. Chinook salmon (Oncorhynchus tshawytscha) is a species of great importance to the people of the North Pacific. Concerns over the bycatch of this species have led to actions that increase the monitoring and data requirements for the trawl pollock (Gadus chalcogrammus) fisheries of Alaska. Since 2005, the North Pacific Observer Program (observer program) has collected tissues from Chinook salmon bycatch for genetic stock composition analysis. The sampling design used to collect these tissues has changed in response to regulations that dictate how observers are deployed into the fleet. In 2011, a systematic random sampling (SYS) of individual bycatch salmon from every trawl pollock delivery was adopted by the observer program. This method requires that a census of Chinook salmon bycatch is achieved. However, regulations that enable the observer program to confidently achieve a census are lacking for the Gulf of Alaska (GOA) compared to the Bering Sea and Aleutian Islands. Consequently, a census of pollock deliveries was not obtained in the GOA during 2012 or 2013. Restructure of the observer program in 2013 eliminated fixed regulations governing partial observer coverage allowing for alternative sampling designs to be explored. Simulations using seasonal data show that an alternative simple random sampling (SRS) method would have consistently resulted in the collection of more genetic tissues at a lower cost than SYS. The SRS was formally incorporated into the 2014 and 2015 sampling design of the observer program for the GOA. The new annual process of making revisions to the observer program based on priorities and policy allows for rapid changes to the observer sampling design to meet genetic stock composition analyses and other fishery management needs. |
format |
Text |
author |
Faunce, Craig Howard, 1970- |
author_facet |
Faunce, Craig Howard, 1970- |
author_sort |
Faunce, Craig Howard, 1970- |
title |
Evolution of observer methods to obtain genetic material from Chinook salmon bycatch in the Alaska pollock fishery. |
title_short |
Evolution of observer methods to obtain genetic material from Chinook salmon bycatch in the Alaska pollock fishery. |
title_full |
Evolution of observer methods to obtain genetic material from Chinook salmon bycatch in the Alaska pollock fishery. |
title_fullStr |
Evolution of observer methods to obtain genetic material from Chinook salmon bycatch in the Alaska pollock fishery. |
title_full_unstemmed |
Evolution of observer methods to obtain genetic material from Chinook salmon bycatch in the Alaska pollock fishery. |
title_sort |
evolution of observer methods to obtain genetic material from chinook salmon bycatch in the alaska pollock fishery. |
publisher |
U.S. Department of Commerce, National Oceanic and Atmospheric Administration, National Marine Fisheries Service, Alaska Fisheries Science Center |
publishDate |
2015 |
url |
https://dx.doi.org/10.7289/v5mg7mff https://repository.library.noaa.gov/view/noaa/4842 |
geographic |
Bering Sea Gulf of Alaska Pacific |
geographic_facet |
Bering Sea Gulf of Alaska Pacific |
genre |
alaska pollock Bering Sea Alaska Aleutian Islands |
genre_facet |
alaska pollock Bering Sea Alaska Aleutian Islands |
op_rights |
Public Domain |
op_rightsnorm |
PDM |
op_doi |
https://doi.org/10.7289/v5mg7mff |
_version_ |
1766176700943564800 |