Population genetics of the American eel ( Anguilla rostrata): F ST = 0 and North Atlantic Oscillation effects on demographic fluctuations of a panmictic species
Abstract We performed population genetic analyses on the A merican eel ( A nguilla rostrata ) with three main objectives. First, we conducted the most comprehensive analysis of neutral genetic population structure to date to revisit the null hypothesis of panmixia in this species. Second, we used th...
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crwiley:10.1111/mec.12142 2024-06-23T07:55:14+00:00 Population genetics of the American eel ( Anguilla rostrata): F ST = 0 and North Atlantic Oscillation effects on demographic fluctuations of a panmictic species Côté, Caroline L. Gagnaire, Pierre‐Alexandre Bourret, Vincent Verreault, Guy Castonguay, Martin Bernatchez, Louis 2012 http://dx.doi.org/10.1111/mec.12142 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fmec.12142 https://onlinelibrary.wiley.com/doi/pdf/10.1111/mec.12142 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor http://doi.wiley.com/10.1002/tdm_license_1.1 Molecular Ecology volume 22, issue 7, page 1763-1776 ISSN 0962-1083 1365-294X journal-article 2012 crwiley https://doi.org/10.1111/mec.12142 2024-06-13T04:20:54Z Abstract We performed population genetic analyses on the A merican eel ( A nguilla rostrata ) with three main objectives. First, we conducted the most comprehensive analysis of neutral genetic population structure to date to revisit the null hypothesis of panmixia in this species. Second, we used this data to provide the first estimates of contemporary effective population size ( N e ) and to document temporal variation in effective number of breeders ( N b ) in American eel. Third, we tested for statistical associations between temporal variation in the N orth A tlantic O scillation ( NAO ), the effective number of breeders and two indices of recruit abundance. A total of 2142 eels from 32 sampling locations were genotyped with 18 microsatellite loci. All measures of differentiation were essentially zero, and no evidence for significant spatial or temporal genetic differentiation was found. The panmixia hypothesis should thus be accepted for this species. N b estimates varied by a factor of 23 among 12 cohorts, from 473 to 10 999. The effective population size N e was estimated at 10 532 (95% CI , 9312–11 752). This study also showed that genetically based demographic indices, namely N b and allelic richness ( Ar ), can be used as surrogates for the abundance of breeders and recruits, which were both shown to be positively influenced by variation during high (positive) NAO phases. Thus, long‐term genetic monitoring of American glass eels at several sites along the North American Atlantic coast would represent a powerful and efficient complement to census monitoring to track demographic fluctuations and better understand their causes. Article in Journal/Newspaper North Atlantic North Atlantic oscillation Wiley Online Library Molecular Ecology 22 7 1763 1776 |
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Wiley Online Library |
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English |
description |
Abstract We performed population genetic analyses on the A merican eel ( A nguilla rostrata ) with three main objectives. First, we conducted the most comprehensive analysis of neutral genetic population structure to date to revisit the null hypothesis of panmixia in this species. Second, we used this data to provide the first estimates of contemporary effective population size ( N e ) and to document temporal variation in effective number of breeders ( N b ) in American eel. Third, we tested for statistical associations between temporal variation in the N orth A tlantic O scillation ( NAO ), the effective number of breeders and two indices of recruit abundance. A total of 2142 eels from 32 sampling locations were genotyped with 18 microsatellite loci. All measures of differentiation were essentially zero, and no evidence for significant spatial or temporal genetic differentiation was found. The panmixia hypothesis should thus be accepted for this species. N b estimates varied by a factor of 23 among 12 cohorts, from 473 to 10 999. The effective population size N e was estimated at 10 532 (95% CI , 9312–11 752). This study also showed that genetically based demographic indices, namely N b and allelic richness ( Ar ), can be used as surrogates for the abundance of breeders and recruits, which were both shown to be positively influenced by variation during high (positive) NAO phases. Thus, long‐term genetic monitoring of American glass eels at several sites along the North American Atlantic coast would represent a powerful and efficient complement to census monitoring to track demographic fluctuations and better understand their causes. |
format |
Article in Journal/Newspaper |
author |
Côté, Caroline L. Gagnaire, Pierre‐Alexandre Bourret, Vincent Verreault, Guy Castonguay, Martin Bernatchez, Louis |
spellingShingle |
Côté, Caroline L. Gagnaire, Pierre‐Alexandre Bourret, Vincent Verreault, Guy Castonguay, Martin Bernatchez, Louis Population genetics of the American eel ( Anguilla rostrata): F ST = 0 and North Atlantic Oscillation effects on demographic fluctuations of a panmictic species |
author_facet |
Côté, Caroline L. Gagnaire, Pierre‐Alexandre Bourret, Vincent Verreault, Guy Castonguay, Martin Bernatchez, Louis |
author_sort |
Côté, Caroline L. |
title |
Population genetics of the American eel ( Anguilla rostrata): F ST = 0 and North Atlantic Oscillation effects on demographic fluctuations of a panmictic species |
title_short |
Population genetics of the American eel ( Anguilla rostrata): F ST = 0 and North Atlantic Oscillation effects on demographic fluctuations of a panmictic species |
title_full |
Population genetics of the American eel ( Anguilla rostrata): F ST = 0 and North Atlantic Oscillation effects on demographic fluctuations of a panmictic species |
title_fullStr |
Population genetics of the American eel ( Anguilla rostrata): F ST = 0 and North Atlantic Oscillation effects on demographic fluctuations of a panmictic species |
title_full_unstemmed |
Population genetics of the American eel ( Anguilla rostrata): F ST = 0 and North Atlantic Oscillation effects on demographic fluctuations of a panmictic species |
title_sort |
population genetics of the american eel ( anguilla rostrata): f st = 0 and north atlantic oscillation effects on demographic fluctuations of a panmictic species |
publisher |
Wiley |
publishDate |
2012 |
url |
http://dx.doi.org/10.1111/mec.12142 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fmec.12142 https://onlinelibrary.wiley.com/doi/pdf/10.1111/mec.12142 |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
Molecular Ecology volume 22, issue 7, page 1763-1776 ISSN 0962-1083 1365-294X |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor http://doi.wiley.com/10.1002/tdm_license_1.1 |
op_doi |
https://doi.org/10.1111/mec.12142 |
container_title |
Molecular Ecology |
container_volume |
22 |
container_issue |
7 |
container_start_page |
1763 |
op_container_end_page |
1776 |
_version_ |
1802647741517529088 |