Closely related octopus species show different spatial genetic structures in response to the Antarctic seascape
Determining whether comparable processes drive genetic divergence among marine species is relevant to molecular ecologists and managers alike. Sympatric species with similar life histories might be expected to show comparable patterns of genetic differentiation and a consistent influence of environm...
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ftpubmed:oai:pubmedcentral.nih.gov:5632630 2023-05-15T13:50:46+02:00 Closely related octopus species show different spatial genetic structures in response to the Antarctic seascape Strugnell, Jan M. Allcock, A. Louise Watts, Phillip C. 2017-09-05 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5632630/ http://www.ncbi.nlm.nih.gov/pubmed/29043058 https://doi.org/10.1002/ece3.3327 en eng John Wiley and Sons Inc. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5632630/ http://www.ncbi.nlm.nih.gov/pubmed/29043058 http://dx.doi.org/10.1002/ece3.3327 © 2017 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. This is an open access article under the terms of the Creative Commons Attribution (http://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. CC-BY Original Research Text 2017 ftpubmed https://doi.org/10.1002/ece3.3327 2017-10-22T00:07:14Z Determining whether comparable processes drive genetic divergence among marine species is relevant to molecular ecologists and managers alike. Sympatric species with similar life histories might be expected to show comparable patterns of genetic differentiation and a consistent influence of environmental factors in shaping divergence. We used microsatellite loci to quantify genetic differentiation across the Scotia Arc in three species of closely related benthic octopods, Pareledone turqueti, P. charcoti, and Adelieledone polymorpha. The relative importance of environmental factors (latitude, longitude, depth, and temperature) in shaping genetic structure was investigated when significant spatial genetic structure was uncovered. Isolated populations of P. turqueti and A. polymorpha at these species’ range margins were genetically different to samples close to mainland Antarctica; however, these species showed different genetic structures at a regional scale. Samples of P. turqueti from the Antarctic Peninsula, Elephant Island, and Signy Island were genetically different, and this divergence was associated primarily with sample collection depth. By contrast, weak or nonsignificant spatial genetic structure was evident across the Antarctic Peninsula, Elephant Island, and Signy Island region for A. polymorpha, and slight associations between population divergence and temperature or depth (and/or longitude) were detected. Pareledone charcoti has a limited geographic range, but exhibited no genetic differentiation between samples from a small region of the Scotia Arc (Elephant Island and the Antarctic Peninsula). Thus, closely related species with similar life history strategies can display contrasting patterns of genetic differentiation depending on spatial scale; moreover, depth may drive genetic divergence in Southern Ocean benthos. Text Antarc* Antarctic Antarctic Peninsula Antarctica Elephant Island Signy Island Southern Ocean PubMed Central (PMC) Antarctic Antarctic Peninsula Elephant Island ENVELOPE(-55.184,-55.184,-61.085,-61.085) Signy Island ENVELOPE(-45.595,-45.595,-60.708,-60.708) Southern Ocean The Antarctic Ecology and Evolution 7 19 8087 8099 |
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Original Research Strugnell, Jan M. Allcock, A. Louise Watts, Phillip C. Closely related octopus species show different spatial genetic structures in response to the Antarctic seascape |
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Original Research |
description |
Determining whether comparable processes drive genetic divergence among marine species is relevant to molecular ecologists and managers alike. Sympatric species with similar life histories might be expected to show comparable patterns of genetic differentiation and a consistent influence of environmental factors in shaping divergence. We used microsatellite loci to quantify genetic differentiation across the Scotia Arc in three species of closely related benthic octopods, Pareledone turqueti, P. charcoti, and Adelieledone polymorpha. The relative importance of environmental factors (latitude, longitude, depth, and temperature) in shaping genetic structure was investigated when significant spatial genetic structure was uncovered. Isolated populations of P. turqueti and A. polymorpha at these species’ range margins were genetically different to samples close to mainland Antarctica; however, these species showed different genetic structures at a regional scale. Samples of P. turqueti from the Antarctic Peninsula, Elephant Island, and Signy Island were genetically different, and this divergence was associated primarily with sample collection depth. By contrast, weak or nonsignificant spatial genetic structure was evident across the Antarctic Peninsula, Elephant Island, and Signy Island region for A. polymorpha, and slight associations between population divergence and temperature or depth (and/or longitude) were detected. Pareledone charcoti has a limited geographic range, but exhibited no genetic differentiation between samples from a small region of the Scotia Arc (Elephant Island and the Antarctic Peninsula). Thus, closely related species with similar life history strategies can display contrasting patterns of genetic differentiation depending on spatial scale; moreover, depth may drive genetic divergence in Southern Ocean benthos. |
format |
Text |
author |
Strugnell, Jan M. Allcock, A. Louise Watts, Phillip C. |
author_facet |
Strugnell, Jan M. Allcock, A. Louise Watts, Phillip C. |
author_sort |
Strugnell, Jan M. |
title |
Closely related octopus species show different spatial genetic structures in response to the Antarctic seascape |
title_short |
Closely related octopus species show different spatial genetic structures in response to the Antarctic seascape |
title_full |
Closely related octopus species show different spatial genetic structures in response to the Antarctic seascape |
title_fullStr |
Closely related octopus species show different spatial genetic structures in response to the Antarctic seascape |
title_full_unstemmed |
Closely related octopus species show different spatial genetic structures in response to the Antarctic seascape |
title_sort |
closely related octopus species show different spatial genetic structures in response to the antarctic seascape |
publisher |
John Wiley and Sons Inc. |
publishDate |
2017 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5632630/ http://www.ncbi.nlm.nih.gov/pubmed/29043058 https://doi.org/10.1002/ece3.3327 |
long_lat |
ENVELOPE(-55.184,-55.184,-61.085,-61.085) ENVELOPE(-45.595,-45.595,-60.708,-60.708) |
geographic |
Antarctic Antarctic Peninsula Elephant Island Signy Island Southern Ocean The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula Elephant Island Signy Island Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Elephant Island Signy Island Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Elephant Island Signy Island Southern Ocean |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5632630/ http://www.ncbi.nlm.nih.gov/pubmed/29043058 http://dx.doi.org/10.1002/ece3.3327 |
op_rights |
© 2017 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. This is an open access article under the terms of the Creative Commons Attribution (http://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1002/ece3.3327 |
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Ecology and Evolution |
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7 |
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19 |
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8087 |
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8099 |
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