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Population structure within the one-dimensional range of a coastal plain katydid
Biogeography plays a significant role in species’ dispersal, and in turn population structure, across the landscape. The North American katydid Neoconocephalus melanorhinus belongs to a genus with high mobility. Unlike other members of the genus, N. melanorhinus is a salt marsh specialist restricted...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5466309/ https://www.ncbi.nlm.nih.gov/pubmed/28599010 http://dx.doi.org/10.1371/journal.pone.0179361 |
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author | Ney, Gideon Schul, Johannes |
author_facet | Ney, Gideon Schul, Johannes |
author_sort | Ney, Gideon |
collection | PubMed |
description | Biogeography plays a significant role in species’ dispersal, and in turn population structure, across the landscape. The North American katydid Neoconocephalus melanorhinus belongs to a genus with high mobility. Unlike other members of the genus, N. melanorhinus is a salt marsh specialist restricted to a narrow corridor along the Atlantic and Gulf coasts. In addition, their range crosses at least one known biogeographic barrier and possesses biogeographic characteristics of the stepping-stone as well as the hierarchical island model of dispersal. Using AFLP markers we searched for areas that conform to the predictions of isolation by distance and for areas of non-uniform increases in genetic variance, indicative of isolation by barrier. We found significant genetic differentiation between all twelve sampled sites. Isolation by distance was the predominant pattern of variation across their range. In addition, we saw possible evidence of two biogeographic barriers to gene flow, one at the Atlantic-Gulf divide and the other along the Gulf coast. We also observed a change in body size across the range. Body size, as measured by male hind femur length, correlated closely with latitude, a possible indication of differential selection across the species range. |
format | Online Article Text |
id | pubmed-5466309 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-54663092017-06-22 Population structure within the one-dimensional range of a coastal plain katydid Ney, Gideon Schul, Johannes PLoS One Research Article Biogeography plays a significant role in species’ dispersal, and in turn population structure, across the landscape. The North American katydid Neoconocephalus melanorhinus belongs to a genus with high mobility. Unlike other members of the genus, N. melanorhinus is a salt marsh specialist restricted to a narrow corridor along the Atlantic and Gulf coasts. In addition, their range crosses at least one known biogeographic barrier and possesses biogeographic characteristics of the stepping-stone as well as the hierarchical island model of dispersal. Using AFLP markers we searched for areas that conform to the predictions of isolation by distance and for areas of non-uniform increases in genetic variance, indicative of isolation by barrier. We found significant genetic differentiation between all twelve sampled sites. Isolation by distance was the predominant pattern of variation across their range. In addition, we saw possible evidence of two biogeographic barriers to gene flow, one at the Atlantic-Gulf divide and the other along the Gulf coast. We also observed a change in body size across the range. Body size, as measured by male hind femur length, correlated closely with latitude, a possible indication of differential selection across the species range. Public Library of Science 2017-06-09 /pmc/articles/PMC5466309/ /pubmed/28599010 http://dx.doi.org/10.1371/journal.pone.0179361 Text en © 2017 Ney, Schul http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
spellingShingle | Research Article Ney, Gideon Schul, Johannes Population structure within the one-dimensional range of a coastal plain katydid |
title | Population structure within the one-dimensional range of a coastal plain katydid |
title_full | Population structure within the one-dimensional range of a coastal plain katydid |
title_fullStr | Population structure within the one-dimensional range of a coastal plain katydid |
title_full_unstemmed | Population structure within the one-dimensional range of a coastal plain katydid |
title_short | Population structure within the one-dimensional range of a coastal plain katydid |
title_sort | population structure within the one-dimensional range of a coastal plain katydid |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5466309/ https://www.ncbi.nlm.nih.gov/pubmed/28599010 http://dx.doi.org/10.1371/journal.pone.0179361 |
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