The identification of sympatric cryptic free-living nematode species in the Antarctic intertidal.
The diversity of free-living nematodes in the beaches of two Antarctic islands, King George and Deception islands was investigated. We used morphological and molecular (LSU, and two fragments of SSU sequences) approaches to evaluate 236 nematodes. Specimens were assigned to at least genera using mor...
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ftdoajarticles:oai:doaj.org/article:c456f86db0024c2bab35d1dc0e3b01d5 2023-05-15T13:37:01+02:00 The identification of sympatric cryptic free-living nematode species in the Antarctic intertidal. Matthew R Lee Cristian B Canales-Aguirre Daniela Nuñez Karla Pérez Crisitan E Hernández Antonio Brante 2017-01-01T00:00:00Z https://doi.org/10.1371/journal.pone.0186140 https://doaj.org/article/c456f86db0024c2bab35d1dc0e3b01d5 EN eng Public Library of Science (PLoS) http://europepmc.org/articles/PMC5629031?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0186140 https://doaj.org/article/c456f86db0024c2bab35d1dc0e3b01d5 PLoS ONE, Vol 12, Iss 10, p e0186140 (2017) Medicine R Science Q article 2017 ftdoajarticles https://doi.org/10.1371/journal.pone.0186140 2022-12-31T12:55:47Z The diversity of free-living nematodes in the beaches of two Antarctic islands, King George and Deception islands was investigated. We used morphological and molecular (LSU, and two fragments of SSU sequences) approaches to evaluate 236 nematodes. Specimens were assigned to at least genera using morphology and were assessed for the presence of cryptic speciation. The following genera were identified: Halomonhystera, Litoditis, Enoploides, Chromadorita, Theristus, Oncholaimus, Viscosia, Gammanema, Bathylaimus, Choanolaimus, and Paracanthonchus; along with specimens from the families Anticomidae and Linhomoeidae. Cryptic speciation was identified within the genera Halomonhystera and Litoditis. All of the cryptic species identified live sympatrically. The two cryptic species of Halomonhystera exhibited no significant morphological differences. However, Litoditis species 2 was significantly larger than Litoditis species 1. The utility of molecular data in confirming the identifications of some of the morphologically more challenging families of nematodes was demonstrated. In terms of which molecular sequences to use for the identification of free-living nematodes, the SSU sequences were more variable than the LSU sequences, and thus provided more resolution in the identification of cryptic speciation. Finally, despite the considerable amount of time and effort required to put together genetic and morphological data, the resulting advance in our understanding of diversity and ecology of free-living marine nematodes, makes that effort worthwhile. Article in Journal/Newspaper Antarc* Antarctic Directory of Open Access Journals: DOAJ Articles Antarctic The Antarctic The Beaches ENVELOPE(-56.832,-56.832,49.583,49.583) PLOS ONE 12 10 e0186140 |
institution |
Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Medicine R Science Q |
spellingShingle |
Medicine R Science Q Matthew R Lee Cristian B Canales-Aguirre Daniela Nuñez Karla Pérez Crisitan E Hernández Antonio Brante The identification of sympatric cryptic free-living nematode species in the Antarctic intertidal. |
topic_facet |
Medicine R Science Q |
description |
The diversity of free-living nematodes in the beaches of two Antarctic islands, King George and Deception islands was investigated. We used morphological and molecular (LSU, and two fragments of SSU sequences) approaches to evaluate 236 nematodes. Specimens were assigned to at least genera using morphology and were assessed for the presence of cryptic speciation. The following genera were identified: Halomonhystera, Litoditis, Enoploides, Chromadorita, Theristus, Oncholaimus, Viscosia, Gammanema, Bathylaimus, Choanolaimus, and Paracanthonchus; along with specimens from the families Anticomidae and Linhomoeidae. Cryptic speciation was identified within the genera Halomonhystera and Litoditis. All of the cryptic species identified live sympatrically. The two cryptic species of Halomonhystera exhibited no significant morphological differences. However, Litoditis species 2 was significantly larger than Litoditis species 1. The utility of molecular data in confirming the identifications of some of the morphologically more challenging families of nematodes was demonstrated. In terms of which molecular sequences to use for the identification of free-living nematodes, the SSU sequences were more variable than the LSU sequences, and thus provided more resolution in the identification of cryptic speciation. Finally, despite the considerable amount of time and effort required to put together genetic and morphological data, the resulting advance in our understanding of diversity and ecology of free-living marine nematodes, makes that effort worthwhile. |
format |
Article in Journal/Newspaper |
author |
Matthew R Lee Cristian B Canales-Aguirre Daniela Nuñez Karla Pérez Crisitan E Hernández Antonio Brante |
author_facet |
Matthew R Lee Cristian B Canales-Aguirre Daniela Nuñez Karla Pérez Crisitan E Hernández Antonio Brante |
author_sort |
Matthew R Lee |
title |
The identification of sympatric cryptic free-living nematode species in the Antarctic intertidal. |
title_short |
The identification of sympatric cryptic free-living nematode species in the Antarctic intertidal. |
title_full |
The identification of sympatric cryptic free-living nematode species in the Antarctic intertidal. |
title_fullStr |
The identification of sympatric cryptic free-living nematode species in the Antarctic intertidal. |
title_full_unstemmed |
The identification of sympatric cryptic free-living nematode species in the Antarctic intertidal. |
title_sort |
identification of sympatric cryptic free-living nematode species in the antarctic intertidal. |
publisher |
Public Library of Science (PLoS) |
publishDate |
2017 |
url |
https://doi.org/10.1371/journal.pone.0186140 https://doaj.org/article/c456f86db0024c2bab35d1dc0e3b01d5 |
long_lat |
ENVELOPE(-56.832,-56.832,49.583,49.583) |
geographic |
Antarctic The Antarctic The Beaches |
geographic_facet |
Antarctic The Antarctic The Beaches |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
PLoS ONE, Vol 12, Iss 10, p e0186140 (2017) |
op_relation |
http://europepmc.org/articles/PMC5629031?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0186140 https://doaj.org/article/c456f86db0024c2bab35d1dc0e3b01d5 |
op_doi |
https://doi.org/10.1371/journal.pone.0186140 |
container_title |
PLOS ONE |
container_volume |
12 |
container_issue |
10 |
container_start_page |
e0186140 |
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1766087037391208448 |