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Out of Asia: mitochondrial evolutionary history of the globally introduced supralittoral isopod Ligia exotica

The native ranges and invasion histories of many marine species remain elusive due to a dynamic dispersal process via marine vessels. Molecular markers can aid in identification of native ranges and elucidation of the introduction and establishment process. The supralittoral isopod Ligia exotica has...

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Autores principales: Hurtado, Luis A., Mateos, Mariana, Wang, Chang, Santamaria, Carlos A., Jung, Jongwoo, Khalaji-Pirbalouty, Valiallah, Kim, Won
Formato: Online Artículo Texto
Lenguaje:English
Publicado: PeerJ Inc. 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5853605/
https://www.ncbi.nlm.nih.gov/pubmed/29576934
http://dx.doi.org/10.7717/peerj.4337
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author Hurtado, Luis A.
Mateos, Mariana
Wang, Chang
Santamaria, Carlos A.
Jung, Jongwoo
Khalaji-Pirbalouty, Valiallah
Kim, Won
author_facet Hurtado, Luis A.
Mateos, Mariana
Wang, Chang
Santamaria, Carlos A.
Jung, Jongwoo
Khalaji-Pirbalouty, Valiallah
Kim, Won
author_sort Hurtado, Luis A.
collection PubMed
description The native ranges and invasion histories of many marine species remain elusive due to a dynamic dispersal process via marine vessels. Molecular markers can aid in identification of native ranges and elucidation of the introduction and establishment process. The supralittoral isopod Ligia exotica has a wide tropical and subtropical distribution, frequently found in harbors and ports around the globe. This isopod is hypothesized to have an Old World origin, from where it was unintentionally introduced to other regions via wooden ships and solid ballast. Its native range, however, remains uncertain. Recent molecular studies uncovered the presence of two highly divergent lineages of L. exotica in East Asia, and suggest this region is a source of nonindigenous populations. In this study, we conducted phylogenetic analyses (Maximum Likelihood and Bayesian) of a fragment of the mitochondrial 16S ribosomal (r)DNA gene using a dataset of this isopod that greatly expanded previous representation from Asia and putative nonindigenous populations around the world. For a subset of samples, sequences of 12S rDNA and NaK were also obtained and analyzed together with 16S rDNA. Our results show that L. exotica is comprised of several highly divergent genetic lineages, which probably represent different species. Most of the 16S rDNA genetic diversity (48 haplotypes) was detected in East and Southeast Asia. Only seven haplotypes were observed outside this region (in the Americas, Hawai’i, Africa and India), which were identical or closely related to haplotypes found in East and Southeast Asia. Phylogenetic patterns indicate the L. exotica clade originated and diversified in East and Southeast Asia, and only members of one of the divergent lineages have spread out of this region, recently, suggesting the potential to become invasive is phylogenetically constrained.
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spelling pubmed-58536052018-03-24 Out of Asia: mitochondrial evolutionary history of the globally introduced supralittoral isopod Ligia exotica Hurtado, Luis A. Mateos, Mariana Wang, Chang Santamaria, Carlos A. Jung, Jongwoo Khalaji-Pirbalouty, Valiallah Kim, Won PeerJ Biodiversity The native ranges and invasion histories of many marine species remain elusive due to a dynamic dispersal process via marine vessels. Molecular markers can aid in identification of native ranges and elucidation of the introduction and establishment process. The supralittoral isopod Ligia exotica has a wide tropical and subtropical distribution, frequently found in harbors and ports around the globe. This isopod is hypothesized to have an Old World origin, from where it was unintentionally introduced to other regions via wooden ships and solid ballast. Its native range, however, remains uncertain. Recent molecular studies uncovered the presence of two highly divergent lineages of L. exotica in East Asia, and suggest this region is a source of nonindigenous populations. In this study, we conducted phylogenetic analyses (Maximum Likelihood and Bayesian) of a fragment of the mitochondrial 16S ribosomal (r)DNA gene using a dataset of this isopod that greatly expanded previous representation from Asia and putative nonindigenous populations around the world. For a subset of samples, sequences of 12S rDNA and NaK were also obtained and analyzed together with 16S rDNA. Our results show that L. exotica is comprised of several highly divergent genetic lineages, which probably represent different species. Most of the 16S rDNA genetic diversity (48 haplotypes) was detected in East and Southeast Asia. Only seven haplotypes were observed outside this region (in the Americas, Hawai’i, Africa and India), which were identical or closely related to haplotypes found in East and Southeast Asia. Phylogenetic patterns indicate the L. exotica clade originated and diversified in East and Southeast Asia, and only members of one of the divergent lineages have spread out of this region, recently, suggesting the potential to become invasive is phylogenetically constrained. PeerJ Inc. 2018-03-12 /pmc/articles/PMC5853605/ /pubmed/29576934 http://dx.doi.org/10.7717/peerj.4337 Text en ©2018 Hurtado et al. 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, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ) and either DOI or URL of the article must be cited.
spellingShingle Biodiversity
Hurtado, Luis A.
Mateos, Mariana
Wang, Chang
Santamaria, Carlos A.
Jung, Jongwoo
Khalaji-Pirbalouty, Valiallah
Kim, Won
Out of Asia: mitochondrial evolutionary history of the globally introduced supralittoral isopod Ligia exotica
title Out of Asia: mitochondrial evolutionary history of the globally introduced supralittoral isopod Ligia exotica
title_full Out of Asia: mitochondrial evolutionary history of the globally introduced supralittoral isopod Ligia exotica
title_fullStr Out of Asia: mitochondrial evolutionary history of the globally introduced supralittoral isopod Ligia exotica
title_full_unstemmed Out of Asia: mitochondrial evolutionary history of the globally introduced supralittoral isopod Ligia exotica
title_short Out of Asia: mitochondrial evolutionary history of the globally introduced supralittoral isopod Ligia exotica
title_sort out of asia: mitochondrial evolutionary history of the globally introduced supralittoral isopod ligia exotica
topic Biodiversity
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5853605/
https://www.ncbi.nlm.nih.gov/pubmed/29576934
http://dx.doi.org/10.7717/peerj.4337
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