Reexamination of the Species Assignment of Diacavolinia Pteropods Using DNA Barcoding
Thecosome pteropods (Mollusca, Gastropoda) are an ecologically important, diverse, and ubiquitous group of holoplanktonic animals that are the focus of intense research interest due to their external aragonite shell and vulnerability to ocean acidification. Characterizing the response of these anima...
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ftpubmed:oai:pubmedcentral.nih.gov:3545881 2023-05-15T17:41:39+02:00 Reexamination of the Species Assignment of Diacavolinia Pteropods Using DNA Barcoding Maas, Amy E. Blanco-Bercial, Leocadio Lawson, Gareth L. 2013-01-15 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3545881 http://www.ncbi.nlm.nih.gov/pubmed/23335979 https://doi.org/10.1371/journal.pone.0053889 en eng Public Library of Science http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3545881 http://www.ncbi.nlm.nih.gov/pubmed/23335979 http://dx.doi.org/10.1371/journal.pone.0053889 This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. CC-BY Research Article Text 2013 ftpubmed https://doi.org/10.1371/journal.pone.0053889 2013-09-04T18:26:58Z Thecosome pteropods (Mollusca, Gastropoda) are an ecologically important, diverse, and ubiquitous group of holoplanktonic animals that are the focus of intense research interest due to their external aragonite shell and vulnerability to ocean acidification. Characterizing the response of these animals to low pH and other environmental stressors has been hampered by continued uncertainty in their taxonomic identification. An example of this confusion in species assignment is found in the genus Diacavolinia. All members of this genus were originally indentified as a single species, Cavolinia longirostris, but over the past fifty years the taxonomy has been revisited multiple times; currently the genus comprises 22 different species. This study examines five species of Diacavolinia, including four sampled in the Northeast Atlantic (78 individuals) and one from the Eastern tropical North Pacific (15 individuals). Diacavolina were identified to species based on morphological characteristics according to the current taxonomy, photographed, and then used to determine the sequence of the “DNA barcoding” region of the cytochrome c oxidase subunit I (COI). Specimens from the Atlantic, despite distinct differences in shell morphology, showed polyphyly and a genetic divergence of <3% (K2P distance) whereas the Pacific and Atlantic samples were more distant (∼19%). Comparisons of Diacavolinia spp. with other Cavolinia spp. reveal larger distances (∼24%). These results indicate that specimens from the Atlantic comprise a single monophyletic species and suggest possible species-level divergence between Atlantic and Pacific populations. The findings support the maintenance of Diacavolinia as a separate genus, yet emphasize the inadequacy of our current taxonomic understanding of pteropods. They highlight the need for accurate species identifications to support estimates of biodiversity, range extent and natural exposure of these planktonic calcifiers to environmental variability; furthermore, the apparent variation of the ... Text Northeast Atlantic Ocean acidification PubMed Central (PMC) Pacific PLoS ONE 8 1 e53889 |
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Research Article Maas, Amy E. Blanco-Bercial, Leocadio Lawson, Gareth L. Reexamination of the Species Assignment of Diacavolinia Pteropods Using DNA Barcoding |
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Research Article |
description |
Thecosome pteropods (Mollusca, Gastropoda) are an ecologically important, diverse, and ubiquitous group of holoplanktonic animals that are the focus of intense research interest due to their external aragonite shell and vulnerability to ocean acidification. Characterizing the response of these animals to low pH and other environmental stressors has been hampered by continued uncertainty in their taxonomic identification. An example of this confusion in species assignment is found in the genus Diacavolinia. All members of this genus were originally indentified as a single species, Cavolinia longirostris, but over the past fifty years the taxonomy has been revisited multiple times; currently the genus comprises 22 different species. This study examines five species of Diacavolinia, including four sampled in the Northeast Atlantic (78 individuals) and one from the Eastern tropical North Pacific (15 individuals). Diacavolina were identified to species based on morphological characteristics according to the current taxonomy, photographed, and then used to determine the sequence of the “DNA barcoding” region of the cytochrome c oxidase subunit I (COI). Specimens from the Atlantic, despite distinct differences in shell morphology, showed polyphyly and a genetic divergence of <3% (K2P distance) whereas the Pacific and Atlantic samples were more distant (∼19%). Comparisons of Diacavolinia spp. with other Cavolinia spp. reveal larger distances (∼24%). These results indicate that specimens from the Atlantic comprise a single monophyletic species and suggest possible species-level divergence between Atlantic and Pacific populations. The findings support the maintenance of Diacavolinia as a separate genus, yet emphasize the inadequacy of our current taxonomic understanding of pteropods. They highlight the need for accurate species identifications to support estimates of biodiversity, range extent and natural exposure of these planktonic calcifiers to environmental variability; furthermore, the apparent variation of the ... |
format |
Text |
author |
Maas, Amy E. Blanco-Bercial, Leocadio Lawson, Gareth L. |
author_facet |
Maas, Amy E. Blanco-Bercial, Leocadio Lawson, Gareth L. |
author_sort |
Maas, Amy E. |
title |
Reexamination of the Species Assignment of Diacavolinia Pteropods Using DNA Barcoding |
title_short |
Reexamination of the Species Assignment of Diacavolinia Pteropods Using DNA Barcoding |
title_full |
Reexamination of the Species Assignment of Diacavolinia Pteropods Using DNA Barcoding |
title_fullStr |
Reexamination of the Species Assignment of Diacavolinia Pteropods Using DNA Barcoding |
title_full_unstemmed |
Reexamination of the Species Assignment of Diacavolinia Pteropods Using DNA Barcoding |
title_sort |
reexamination of the species assignment of diacavolinia pteropods using dna barcoding |
publisher |
Public Library of Science |
publishDate |
2013 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3545881 http://www.ncbi.nlm.nih.gov/pubmed/23335979 https://doi.org/10.1371/journal.pone.0053889 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Northeast Atlantic Ocean acidification |
genre_facet |
Northeast Atlantic Ocean acidification |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3545881 http://www.ncbi.nlm.nih.gov/pubmed/23335979 http://dx.doi.org/10.1371/journal.pone.0053889 |
op_rights |
This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
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CC-BY |
op_doi |
https://doi.org/10.1371/journal.pone.0053889 |
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PLoS ONE |
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8 |
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e53889 |
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