Estimating Common Growth Patterns in Juvenile Chinook Salmon (Oncorhynchus tshawytscha) from Diverse Genetic Stocks and a Large Spatial Extent

Goertler, Pascale A. L.; Scheuerell, Mark D.; Simenstad, Charles A.; Bottom, Daniel L.

doi:10.1371/journal.pone.0162121

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Estimating Common Growth Patterns in Juvenile Chinook Salmon (Oncorhynchus tshawytscha) from Diverse Genetic Stocks and a Large Spatial Extent

2016
By Goertler, Pascale A. L. ; Scheuerell, Mark D. ; Simenstad, Charles A. ; ...
Source: PLOS ONE

[PDF-3.34 MB]

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Details:

Journal Title:

PLOS ONE
Personal Author:

Goertler, Pascale A. L. ; Scheuerell, Mark D. ; Simenstad, Charles A. ; Bottom, Daniel L.

Goertler, Pascale A. L. ; Scheuerell, Mark D. ; Simenstad, Charles A. ; Bottom, Daniel L. Less -
NOAA Program & Office:

NMFS (National Marine Fisheries Service) ; NWFSC (Northwest Fisheries Science Center)

NMFS (National Marine Fisheries Service) ; NWFSC (Northwest Fisheries Science Center) Less -
Description:

Life history variation in Pacific salmon (Oncorhynchus spp.) supports species resilience to natural disturbances and fishery exploitation. Within salmon species, life-history variation often manifests during freshwater and estuarine rearing, as variation in growth. To date, however, characterizing variability in growth patterns within and among individuals has been difficult via conventional sampling methods because of the inability to obtain repeated size measurements. In this study we related otolith microstructures to growth rates of individual juvenile Chinook salmon (O. tshawytscha) from the Columbia River estuary over a two-year period (2010-2012). We used dynamic factor analysis to determine whether there were common patterns in growth rates within juveniles based on their natal region, capture location habitat type, and whether they were wild or of hatchery origin. We identified up to five large-scale trends in juvenile growth rates depending on month and year of capture. We also found that hatchery fish had a narrower range of trend loadings for some capture groups, suggesting that hatchery fish do not express the same breadth of growth variability as wild fish. However, we were unable to resolve a relationship between specific growth patterns and habitat transitions. Our study exemplifies how a relatively new statistical analysis can be applied to dating or aging techniques to summarize individual variation, and characterize aspects of life history diversity.
Keywords:

[+]

Climatic Changes Habitat Conservation History Identification Life Microstructure Otoliths Pacific Salmon Population Science Survival Technology
Source:

PLOS ONE
DOI:

https://doi.org/10.1371/journal.pone.0162121
Pubmed Central ID:

PMC5047595
Document Type:

Journal Article
Funding:

Grant no. NOAA:EST-O10-1
Place as Subject:

Columbia River Estuary (Or. and Wash.) ; British Columbia

Columbia River Estuary (Or. and Wash.) ; British Columbia Less -
Rights Information:

CC BY
Compliance:

PMC
Main Document Checksum:

[+]

urn:sha256:7a37a21d7f4c74f97a9912a9fadbd2f3aa715f81ce7de58ee8222c980dc4d63d
Download URL:

https://repository.library.noaa.gov/view/noaa/24823/noaa_24823_DS1.pdf
File Type:

Available data set

htm

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