Making sense of the relationships between Ne, Nb and Nc towards defining conservation thresholds in Atlantic salmon (Salmo salar)
Effective population size over a generation (Ne) or over a reproductive cycle (Nb) and the adult census size (Nc) are important parameters in both conservation and evolutionary biology. Ne provides information regarding the rate of loss of genetic diversity and can be tracked back in time to infer d...
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ftpubmed:oai:pubmedcentral.nih.gov:5026759 2023-05-15T15:30:23+02:00 Making sense of the relationships between Ne, Nb and Nc towards defining conservation thresholds in Atlantic salmon (Salmo salar) Ferchaud, A-L Perrier, C April, J Hernandez, C Dionne, M Bernatchez, L 2016-10 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5026759/ http://www.ncbi.nlm.nih.gov/pubmed/27530910 https://doi.org/10.1038/hdy.2016.62 en eng Nature Publishing Group http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5026759/ http://www.ncbi.nlm.nih.gov/pubmed/27530910 http://dx.doi.org/10.1038/hdy.2016.62 Copyright © 2016 The Genetics Society Macmillan Publishers Limited, part of Springer Nature. Original Article Text 2016 ftpubmed https://doi.org/10.1038/hdy.2016.62 2017-10-08T00:05:16Z Effective population size over a generation (Ne) or over a reproductive cycle (Nb) and the adult census size (Nc) are important parameters in both conservation and evolutionary biology. Ne provides information regarding the rate of loss of genetic diversity and can be tracked back in time to infer demographic history of populations, whereas Nb may often be more easily quantified than Nc for short-term abundance monitoring. In this study, we propose (1) an empirical context to Waples et al. (2014) who introduced a correction to bias due to overlapping generations, and (2) a mathematical relationship between Ne and Nb for direct application in Atlantic salmon populations in Québec, Canada. To achieve this, we investigate the relationships between Ne, Nb and Nc in 10 Atlantic salmon populations, Canada, for which we genotyped 100 randomly sampled young-of-the year individuals for 5 consecutive years. The results show a positive correlation between Ne, Nb and Nc, suggesting that Nb is an indicative parameter for tracking effective population size and abundance of Atlantic salmon. However, our model allows predicting Nc from Nb values at 27% that can be partly explained by high variance in Nb/Nc both among populations (37%) and among years (19%). This result illustrates the need for thorough calibration of Nb/Nc before using Nb in monitoring programs, as well as a full understanding of the limits of such an approach. Finally, we discuss the importance of these results for the management of wild populations. Text Atlantic salmon Salmo salar PubMed Central (PMC) Canada Heredity 117 4 268 278 |
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Original Article Ferchaud, A-L Perrier, C April, J Hernandez, C Dionne, M Bernatchez, L Making sense of the relationships between Ne, Nb and Nc towards defining conservation thresholds in Atlantic salmon (Salmo salar) |
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Original Article |
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Effective population size over a generation (Ne) or over a reproductive cycle (Nb) and the adult census size (Nc) are important parameters in both conservation and evolutionary biology. Ne provides information regarding the rate of loss of genetic diversity and can be tracked back in time to infer demographic history of populations, whereas Nb may often be more easily quantified than Nc for short-term abundance monitoring. In this study, we propose (1) an empirical context to Waples et al. (2014) who introduced a correction to bias due to overlapping generations, and (2) a mathematical relationship between Ne and Nb for direct application in Atlantic salmon populations in Québec, Canada. To achieve this, we investigate the relationships between Ne, Nb and Nc in 10 Atlantic salmon populations, Canada, for which we genotyped 100 randomly sampled young-of-the year individuals for 5 consecutive years. The results show a positive correlation between Ne, Nb and Nc, suggesting that Nb is an indicative parameter for tracking effective population size and abundance of Atlantic salmon. However, our model allows predicting Nc from Nb values at 27% that can be partly explained by high variance in Nb/Nc both among populations (37%) and among years (19%). This result illustrates the need for thorough calibration of Nb/Nc before using Nb in monitoring programs, as well as a full understanding of the limits of such an approach. Finally, we discuss the importance of these results for the management of wild populations. |
format |
Text |
author |
Ferchaud, A-L Perrier, C April, J Hernandez, C Dionne, M Bernatchez, L |
author_facet |
Ferchaud, A-L Perrier, C April, J Hernandez, C Dionne, M Bernatchez, L |
author_sort |
Ferchaud, A-L |
title |
Making sense of the relationships between Ne, Nb and Nc towards defining conservation thresholds in Atlantic salmon (Salmo salar) |
title_short |
Making sense of the relationships between Ne, Nb and Nc towards defining conservation thresholds in Atlantic salmon (Salmo salar) |
title_full |
Making sense of the relationships between Ne, Nb and Nc towards defining conservation thresholds in Atlantic salmon (Salmo salar) |
title_fullStr |
Making sense of the relationships between Ne, Nb and Nc towards defining conservation thresholds in Atlantic salmon (Salmo salar) |
title_full_unstemmed |
Making sense of the relationships between Ne, Nb and Nc towards defining conservation thresholds in Atlantic salmon (Salmo salar) |
title_sort |
making sense of the relationships between ne, nb and nc towards defining conservation thresholds in atlantic salmon (salmo salar) |
publisher |
Nature Publishing Group |
publishDate |
2016 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5026759/ http://www.ncbi.nlm.nih.gov/pubmed/27530910 https://doi.org/10.1038/hdy.2016.62 |
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Canada |
geographic_facet |
Canada |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5026759/ http://www.ncbi.nlm.nih.gov/pubmed/27530910 http://dx.doi.org/10.1038/hdy.2016.62 |
op_rights |
Copyright © 2016 The Genetics Society Macmillan Publishers Limited, part of Springer Nature. |
op_doi |
https://doi.org/10.1038/hdy.2016.62 |
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