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Tytuł pozycji:

Parentage‐based tagging combined with genetic stock identification is a cost‐effective and viable replacement for coded‐wire tagging in large‐scale assessments of marine Chinook salmon fisheries in British Columbia, Canada

Tytuł:
Parentage‐based tagging combined with genetic stock identification is a cost‐effective and viable replacement for coded‐wire tagging in large‐scale assessments of marine Chinook salmon fisheries in British Columbia, Canada
Autorzy:
Terry D. Beacham
Colin G. Wallace
Kim Jonsen
Brenda McIntosh
John R. Candy
Katherine Horst
Cheryl Lynch
David Willis
Wilf Luedke
Lee Kearey
Eric B. Rondeau
Temat:
Chinook salmon
coded‐wire tags
fishery management
genetic stock identification
genotyping by sequencing
parentage‐based tagging
Evolution
QH359-425
Źródło:
Evolutionary Applications, Vol 14, Iss 5, Pp 1365-1389 (2021)
Wydawca:
Wiley, 2021.
Rok publikacji:
2021
Kolekcja:
LCC:Evolution
Typ dokumentu:
article
Opis pliku:
electronic resource
Język:
English
ISSN:
1752-4571
Relacje:
https://doaj.org/toc/1752-4571
DOI:
10.1111/eva.13203
Dostęp URL:
https://doaj.org/article/a80e0b91717e4d0abc8be4a7246dd5b8  Link otwiera się w nowym oknie
Numer akcesji:
edsdoj.80e0b91717e4d0abc8be4a7246dd5b8
Czasopismo naukowe
Abstract Wild Pacific salmon, including Chinook salmon Oncorhynchus tshawytscha, have been supplemented with hatchery propagation for over 50 years in support of increased ocean harvest, mitigation for hydroelectric development, and conservation of threatened populations. In Canada, the Wild Salmon Policy for Pacific salmon was established with the goal of maintaining and restoring healthy and diverse Pacific salmon populations, making conservation of wild salmon and their habitats the highest priority for resource management decision‐making. For policy implementation, a new approach to the assessment and management of Chinook salmon and the associated hatchery production and fisheries management are needed. Implementation of genetic stock identification (GSI) and parentage‐based tagging (PBT) for marine fisheries assessment may overcome problems associated with coded‐wire tag‐based (CWT) assessment and management of Chinook salmon fisheries, providing at a minimum information equivalent to that derived from the CWT program. GSI and PBT were used to identify Chinook salmon sampled in 2018 and 2019 marine fisheries (18,819 individuals genotyped) in British Columbia to specific conservation units (CU), populations, and broodyears. Individuals were genotyped at 391 single nucleotide polymorphisms via direct sequencing of amplicons. Very high accuracy of assignment to population and age (>99.5%) via PBT was observed for 1994 Chinook salmon of ages 2–4 years, with a 105,722–individual, 380–population baseline available for assignment. Application of a GSI‐PBT system of identification to individuals in 2019 fisheries provided high‐resolution estimates of stock composition, catch, and exploitation rate by CU or population, with fishery exploitation rates directly comparable to those provided by CWTs for 13 populations. GSI and PBT provide an alternate, cheaper, and more effective method in the assessment and management of Canadian‐origin Chinook salmon relative to CWTs, and an opportunity for a genetics‐based system to replace the current CWT system for salmon assessment.

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