Genetic diversity of marine oligochaetous clitellates in selected areas of the South Atlantic as revealed by DNA barcoding
Marine oligochaetous clitellates are poorly investigated in the South Atlantic Ocean, especially along the east coast of South America. Closely related species are often difficult to distinguish based on morphology. The lack of specialists and modern identification guides have been pointed out as th...
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2018
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Online Access: | https://doi.org/10.1071/IS17029 |
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ftbioone:10.1071/IS17029 2024-06-02T07:57:16+00:00 Genetic diversity of marine oligochaetous clitellates in selected areas of the South Atlantic as revealed by DNA barcoding Alessandro L. Prantoni Ricardo Belmonte-Lopes Paulo C. Lana Christer Erséus Alessandro L. Prantoni Ricardo Belmonte-Lopes Paulo C. Lana Christer Erséus world 2018-04-26 text/HTML https://doi.org/10.1071/IS17029 en eng CSIRO Publishing doi:10.1071/IS17029 All rights reserved. https://doi.org/10.1071/IS17029 Text 2018 ftbioone https://doi.org/10.1071/IS17029 2024-05-07T00:49:46Z Marine oligochaetous clitellates are poorly investigated in the South Atlantic Ocean, especially along the east coast of South America. Closely related species are often difficult to distinguish based on morphology. The lack of specialists and modern identification guides have been pointed out as the main reasons for the scarcity of studies in the South Atlantic Ocean as a whole. To increase the knowledge of this group in the South Atlantic, the genetic diversity of a sample of marine oligochaetous clitellates from Brazil, South Africa and Antarctica was assessed by the Automatic Barcode Gap Discovery (ABGD) and the generalised mixed Yule coalescent (GMYC) approaches. In total, 80 cytochrome c oxidase subunit I (COI) sequences were obtained, each with ∼658 bp, estimated to represent 32 distinct putative species. ABGD established a barcoding gap between 3% and 14% divergence for uncorrected p-distances and the estimates of GMYC were largely concordant. All the clusters or putative species were genetically associated with previously known species or genera. This study thus confirms the adequacy of the COI barcoding approach combined with a genetic divergence threshold at the order of 10% for marine oligochaetous clitellates. Text Antarc* Antarctica South Atlantic Ocean BioOne Online Journals Invertebrate Systematics 32 3 524 |
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BioOne Online Journals |
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ftbioone |
language |
English |
description |
Marine oligochaetous clitellates are poorly investigated in the South Atlantic Ocean, especially along the east coast of South America. Closely related species are often difficult to distinguish based on morphology. The lack of specialists and modern identification guides have been pointed out as the main reasons for the scarcity of studies in the South Atlantic Ocean as a whole. To increase the knowledge of this group in the South Atlantic, the genetic diversity of a sample of marine oligochaetous clitellates from Brazil, South Africa and Antarctica was assessed by the Automatic Barcode Gap Discovery (ABGD) and the generalised mixed Yule coalescent (GMYC) approaches. In total, 80 cytochrome c oxidase subunit I (COI) sequences were obtained, each with ∼658 bp, estimated to represent 32 distinct putative species. ABGD established a barcoding gap between 3% and 14% divergence for uncorrected p-distances and the estimates of GMYC were largely concordant. All the clusters or putative species were genetically associated with previously known species or genera. This study thus confirms the adequacy of the COI barcoding approach combined with a genetic divergence threshold at the order of 10% for marine oligochaetous clitellates. |
author2 |
Alessandro L. Prantoni Ricardo Belmonte-Lopes Paulo C. Lana Christer Erséus |
format |
Text |
author |
Alessandro L. Prantoni Ricardo Belmonte-Lopes Paulo C. Lana Christer Erséus |
spellingShingle |
Alessandro L. Prantoni Ricardo Belmonte-Lopes Paulo C. Lana Christer Erséus Genetic diversity of marine oligochaetous clitellates in selected areas of the South Atlantic as revealed by DNA barcoding |
author_facet |
Alessandro L. Prantoni Ricardo Belmonte-Lopes Paulo C. Lana Christer Erséus |
author_sort |
Alessandro L. Prantoni |
title |
Genetic diversity of marine oligochaetous clitellates in selected areas of the South Atlantic as revealed by DNA barcoding |
title_short |
Genetic diversity of marine oligochaetous clitellates in selected areas of the South Atlantic as revealed by DNA barcoding |
title_full |
Genetic diversity of marine oligochaetous clitellates in selected areas of the South Atlantic as revealed by DNA barcoding |
title_fullStr |
Genetic diversity of marine oligochaetous clitellates in selected areas of the South Atlantic as revealed by DNA barcoding |
title_full_unstemmed |
Genetic diversity of marine oligochaetous clitellates in selected areas of the South Atlantic as revealed by DNA barcoding |
title_sort |
genetic diversity of marine oligochaetous clitellates in selected areas of the south atlantic as revealed by dna barcoding |
publisher |
CSIRO Publishing |
publishDate |
2018 |
url |
https://doi.org/10.1071/IS17029 |
op_coverage |
world |
genre |
Antarc* Antarctica South Atlantic Ocean |
genre_facet |
Antarc* Antarctica South Atlantic Ocean |
op_source |
https://doi.org/10.1071/IS17029 |
op_relation |
doi:10.1071/IS17029 |
op_rights |
All rights reserved. |
op_doi |
https://doi.org/10.1071/IS17029 |
container_title |
Invertebrate Systematics |
container_volume |
32 |
container_issue |
3 |
container_start_page |
524 |
_version_ |
1800740359291011072 |