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Title: Seascape genomics of eastern oyster ( Crassostrea virginica ) along the Atlantic coast of Canada

Abstract

Abstract Interactions between environmental factors and complex life‐history characteristics of marine organisms produce the genetic diversity and structure observed within species. Our main goal was to test for genetic differentiation among eastern oyster populations from the coastal region of Canadian Maritimes against expected genetic homogeneity caused by historical events, taking into account spatial and environmental (temperature, salinity, turbidity) variation. This was achieved by genotyping 486 individuals originating from 13 locations using RADSeq. A total of 11,321 filtered SNPs were used in a combination of population genomics and environmental association analyses. We revealed significant neutral genetic differentiation (mean F ST  = 0.009) between sampling locations, and the occurrence of six major genetic clusters within the studied system. Redundancy analyses (RDAs) revealed that spatial and environmental variables explained 3.1% and 4.9% of the neutral genetic variation and 38.6% and 12.2% of the putatively adaptive genetic variation, respectively. These results indicate that these environmental factors play a role in the distribution of both neutral and putatively adaptive genetic diversity in the system. Moreover, polygenic selection was suggested by genotype–environment association analysis and significant correlations between additive polygenic scores and temperature and salinity. We discuss our results in the context of their conservation and managementmore » implications for the eastern oyster.« less

Authors:
ORCiD logo [1]; ORCiD logo [2];  [3]; ORCiD logo [3];  [4];  [4]; ORCiD logo [3];  [5]
  1. Institut de Biologie Intégrative et des Systèmes (IBIS) Université Laval Québec Québec Canada, Department of Ecology and Evolutionary Biology University of Toronto Toronto Ontario Canada, Fisheries and Oceans Canada Moncton New Brunswick Canada, L’Étang Ruisseau Bar Ltd. Shippagan New Brunswick Canada
  2. Department of Ecology and Evolutionary Biology University of Toronto Toronto Ontario Canada
  3. Institut de Biologie Intégrative et des Systèmes (IBIS) Université Laval Québec Québec Canada
  4. Fisheries and Oceans Canada Moncton New Brunswick Canada
  5. L’Étang Ruisseau Bar Ltd. Shippagan New Brunswick Canada
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1488871
Alternate Identifier(s):
OSTI ID: 1488873
Resource Type:
Published Article
Journal Name:
Evolutionary Applications
Additional Journal Information:
Journal Name: Evolutionary Applications Journal Volume: 12 Journal Issue: 3; Journal ID: ISSN 1752-4571
Publisher:
Wiley-Blackwell
Country of Publication:
United Kingdom
Language:
English

Citation Formats

Bernatchez, Simon, Xuereb, Amanda, Laporte, Martin, Benestan, Laura, Steeves, Royce, Laflamme, Mark, Bernatchez, Louis, and Mallet, Martin A. Seascape genomics of eastern oyster ( Crassostrea virginica ) along the Atlantic coast of Canada. United Kingdom: N. p., 2018. Web. doi:10.1111/eva.12741.
Bernatchez, Simon, Xuereb, Amanda, Laporte, Martin, Benestan, Laura, Steeves, Royce, Laflamme, Mark, Bernatchez, Louis, & Mallet, Martin A. Seascape genomics of eastern oyster ( Crassostrea virginica ) along the Atlantic coast of Canada. United Kingdom. https://doi.org/10.1111/eva.12741
Bernatchez, Simon, Xuereb, Amanda, Laporte, Martin, Benestan, Laura, Steeves, Royce, Laflamme, Mark, Bernatchez, Louis, and Mallet, Martin A. Wed . "Seascape genomics of eastern oyster ( Crassostrea virginica ) along the Atlantic coast of Canada". United Kingdom. https://doi.org/10.1111/eva.12741.
@article{osti_1488871,
title = {Seascape genomics of eastern oyster ( Crassostrea virginica ) along the Atlantic coast of Canada},
author = {Bernatchez, Simon and Xuereb, Amanda and Laporte, Martin and Benestan, Laura and Steeves, Royce and Laflamme, Mark and Bernatchez, Louis and Mallet, Martin A.},
abstractNote = {Abstract Interactions between environmental factors and complex life‐history characteristics of marine organisms produce the genetic diversity and structure observed within species. Our main goal was to test for genetic differentiation among eastern oyster populations from the coastal region of Canadian Maritimes against expected genetic homogeneity caused by historical events, taking into account spatial and environmental (temperature, salinity, turbidity) variation. This was achieved by genotyping 486 individuals originating from 13 locations using RADSeq. A total of 11,321 filtered SNPs were used in a combination of population genomics and environmental association analyses. We revealed significant neutral genetic differentiation (mean F ST  = 0.009) between sampling locations, and the occurrence of six major genetic clusters within the studied system. Redundancy analyses (RDAs) revealed that spatial and environmental variables explained 3.1% and 4.9% of the neutral genetic variation and 38.6% and 12.2% of the putatively adaptive genetic variation, respectively. These results indicate that these environmental factors play a role in the distribution of both neutral and putatively adaptive genetic diversity in the system. Moreover, polygenic selection was suggested by genotype–environment association analysis and significant correlations between additive polygenic scores and temperature and salinity. We discuss our results in the context of their conservation and management implications for the eastern oyster.},
doi = {10.1111/eva.12741},
journal = {Evolutionary Applications},
number = 3,
volume = 12,
place = {United Kingdom},
year = {Wed Dec 26 00:00:00 EST 2018},
month = {Wed Dec 26 00:00:00 EST 2018}
}

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https://doi.org/10.1111/eva.12741

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Stacks : Building and Genotyping Loci De Novo From Short-Read Sequences
journal, August 2011

  • Catchen, Julian M.; Amores, Angel; Hohenlohe, Paul
  • G3: Genes|Genomes|Genetics, Vol. 1, Issue 3
  • DOI: 10.1534/g3.111.000240

Genetic Linkage Map of the Eastern Oyster Crassostrea virginica Gmelin
journal, June 2003

  • Yu, Ziniu; Guo, Ximing
  • The Biological Bulletin, Vol. 204, Issue 3
  • DOI: 10.2307/1543603

Random Forests
journal, January 2001


Harnessing the Power of Genomics to Secure the Future of Seafood
journal, September 2017

  • Bernatchez, Louis; Wellenreuther, Maren; Araneda, Cristián
  • Trends in Ecology & Evolution, Vol. 32, Issue 9
  • DOI: 10.1016/j.tree.2017.06.010

Shellfish Face Uncertain Future in High CO2 World: Influence of Acidification on Oyster Larvae Calcification and Growth in Estuaries
journal, May 2009