Unexpected Fine-Scale Population Structure in a Broadcast-Spawning Antarctic Marine Mollusc
Several recent empirical studies have challenged the prevailing dogma that broadcast-spawning species exhibit little or no population genetic structure by documenting genetic discontinuities associated with large-scale oceanographic features. However, relatively few studies have explored patterns of...
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ftpubmed:oai:pubmedcentral.nih.gov:3293793 2023-05-15T13:03:54+02:00 Unexpected Fine-Scale Population Structure in a Broadcast-Spawning Antarctic Marine Mollusc Hoffman, Joseph I. Clarke, Andy Clark, Melody S. Fretwell, Peter Peck, Lloyd S. 2012-03-05 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3293793 http://www.ncbi.nlm.nih.gov/pubmed/22403655 https://doi.org/10.1371/journal.pone.0032415 en eng Public Library of Science http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3293793 http://www.ncbi.nlm.nih.gov/pubmed/22403655 http://dx.doi.org/10.1371/journal.pone.0032415 Hoffman et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. CC-BY Research Article Text 2012 ftpubmed https://doi.org/10.1371/journal.pone.0032415 2013-09-04T03:32:52Z Several recent empirical studies have challenged the prevailing dogma that broadcast-spawning species exhibit little or no population genetic structure by documenting genetic discontinuities associated with large-scale oceanographic features. However, relatively few studies have explored patterns of genetic differentiation over fine spatial scales. Consequently, we used a hierarchical sampling design to investigate the basis of a weak but significant genetic difference previously reported between Antarctic limpets (Nacella concinna) sampled from Adelaide and Galindez Islands near the base of the Antarctic Peninsula. Three sites within Ryder Bay, Adelaide Island (Rothera Point, Leonie and Anchorage Islands) were each sub-sampled three times, yielding a total of 405 samples that were genotyped at 155 informative Amplified Fragment Length Polymorphisms (AFLPs). Contrary to our initial expectations, limpets from Anchorage Island were found to be subtly, but significantly distinct from those sampled from the other sites. This suggests that local processes may play an important role in generating fine-scale population structure even in species with excellent dispersal capabilities, and highlights the importance of sampling at multiple spatial scales in population genetic surveys. Text Adelaide Island Anchorage Island Antarc* Antarctic Antarctic Peninsula PubMed Central (PMC) Adelaide Island ENVELOPE(-68.914,-68.914,-67.762,-67.762) Anchorage Anchorage Island ENVELOPE(-68.214,-68.214,-67.605,-67.605) Antarctic Antarctic Peninsula Galindez ENVELOPE(-64.248,-64.248,-65.250,-65.250) Nacella ENVELOPE(-60.783,-60.783,-62.467,-62.467) Rothera ENVELOPE(-68.130,-68.130,-67.568,-67.568) Rothera Point ENVELOPE(-68.133,-68.133,-67.567,-67.567) Ryder ENVELOPE(-68.333,-68.333,-67.566,-67.566) Ryder Bay ENVELOPE(-68.333,-68.333,-67.567,-67.567) The Antarctic PLoS ONE 7 3 e32415 |
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Research Article |
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Research Article Hoffman, Joseph I. Clarke, Andy Clark, Melody S. Fretwell, Peter Peck, Lloyd S. Unexpected Fine-Scale Population Structure in a Broadcast-Spawning Antarctic Marine Mollusc |
topic_facet |
Research Article |
description |
Several recent empirical studies have challenged the prevailing dogma that broadcast-spawning species exhibit little or no population genetic structure by documenting genetic discontinuities associated with large-scale oceanographic features. However, relatively few studies have explored patterns of genetic differentiation over fine spatial scales. Consequently, we used a hierarchical sampling design to investigate the basis of a weak but significant genetic difference previously reported between Antarctic limpets (Nacella concinna) sampled from Adelaide and Galindez Islands near the base of the Antarctic Peninsula. Three sites within Ryder Bay, Adelaide Island (Rothera Point, Leonie and Anchorage Islands) were each sub-sampled three times, yielding a total of 405 samples that were genotyped at 155 informative Amplified Fragment Length Polymorphisms (AFLPs). Contrary to our initial expectations, limpets from Anchorage Island were found to be subtly, but significantly distinct from those sampled from the other sites. This suggests that local processes may play an important role in generating fine-scale population structure even in species with excellent dispersal capabilities, and highlights the importance of sampling at multiple spatial scales in population genetic surveys. |
format |
Text |
author |
Hoffman, Joseph I. Clarke, Andy Clark, Melody S. Fretwell, Peter Peck, Lloyd S. |
author_facet |
Hoffman, Joseph I. Clarke, Andy Clark, Melody S. Fretwell, Peter Peck, Lloyd S. |
author_sort |
Hoffman, Joseph I. |
title |
Unexpected Fine-Scale Population Structure in a Broadcast-Spawning Antarctic Marine Mollusc |
title_short |
Unexpected Fine-Scale Population Structure in a Broadcast-Spawning Antarctic Marine Mollusc |
title_full |
Unexpected Fine-Scale Population Structure in a Broadcast-Spawning Antarctic Marine Mollusc |
title_fullStr |
Unexpected Fine-Scale Population Structure in a Broadcast-Spawning Antarctic Marine Mollusc |
title_full_unstemmed |
Unexpected Fine-Scale Population Structure in a Broadcast-Spawning Antarctic Marine Mollusc |
title_sort |
unexpected fine-scale population structure in a broadcast-spawning antarctic marine mollusc |
publisher |
Public Library of Science |
publishDate |
2012 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3293793 http://www.ncbi.nlm.nih.gov/pubmed/22403655 https://doi.org/10.1371/journal.pone.0032415 |
long_lat |
ENVELOPE(-68.914,-68.914,-67.762,-67.762) ENVELOPE(-68.214,-68.214,-67.605,-67.605) ENVELOPE(-64.248,-64.248,-65.250,-65.250) ENVELOPE(-60.783,-60.783,-62.467,-62.467) ENVELOPE(-68.130,-68.130,-67.568,-67.568) ENVELOPE(-68.133,-68.133,-67.567,-67.567) ENVELOPE(-68.333,-68.333,-67.566,-67.566) ENVELOPE(-68.333,-68.333,-67.567,-67.567) |
geographic |
Adelaide Island Anchorage Anchorage Island Antarctic Antarctic Peninsula Galindez Nacella Rothera Rothera Point Ryder Ryder Bay The Antarctic |
geographic_facet |
Adelaide Island Anchorage Anchorage Island Antarctic Antarctic Peninsula Galindez Nacella Rothera Rothera Point Ryder Ryder Bay The Antarctic |
genre |
Adelaide Island Anchorage Island Antarc* Antarctic Antarctic Peninsula |
genre_facet |
Adelaide Island Anchorage Island Antarc* Antarctic Antarctic Peninsula |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3293793 http://www.ncbi.nlm.nih.gov/pubmed/22403655 http://dx.doi.org/10.1371/journal.pone.0032415 |
op_rights |
Hoffman et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1371/journal.pone.0032415 |
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PLoS ONE |
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7 |
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3 |
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e32415 |
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1766347864419598336 |