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Toward an inordinate fondness for stars, beetles and Lobophora?: species diversity of the genus Lobophora (Dictyotales, Phaeophyceae) in New Caledonia

Christophe Vieira UGent, Sofie D'Hondt, Olivier De Clerck UGent and Claude E Payri (2014) JOURNAL OF PHYCOLOGY. 50(6). p.1101-1119
abstract
Until the recent use of molecular markers, species diversity of Lobophora, an ecologically important brown algal genus with a worldwide distribution in temperate and tropical seas, has been critically underestimated. Using a DNA-based taxonomic approach, we re-examined diversity of the genus from New Caledonia in the Southwest Pacific Ocean. First, species were delineated using general mixed Yule coalescent-based and barcoding gap approaches applied to a mitochondrial cox3 data set. Results were subsequently confirmed using chloroplast psbA and rbcL data sets. Species delimitation analyses agreed well across markers and delimitation algorithms, with the barcoding gap approach being slightly more conservative. Analyses of the cox3 data set resulted in 31-39 molecular operational taxonomic units (MOTUs), four of which are previously described species (L. asiatica, L. crassa, L. nigrescens s.l., L. pachyventera). Of the remaining MOTUs for which we obtained a representative number of sequences and results are corroborated across analyses and genes, we described 10 species de novo: L. abaculusa, L. abscondita, L. densa, L. dimorpha, L. gibbera, L. hederacea, L. monticola, L. petila, L. rosacea, and L. undulata. Our study presents an excellent case of how a traditional morphology-based taxonomy fails to provide accurate estimates of algal diversity. Furthermore, the level of Lobophora diversity unveiled from a single locality in the Pacific Ocean raises important questions with respect to the global diversity of the genus, the distributions and range sizes of the individual species, as well as the mechanisms facilitating coexistence.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
phylogeny, species delimitation, new species, New Caledonia, Lobophora, GMYC, ABGD, taxonomy, VARIEGATA PHAEOPHYCEAE, CORAL-REEF, MORPHOLOGICAL VARIATION, MIXED MODELS, DNA, DELIMITATION, ALGAE, SEQUENCES, TAXONOMY, CLASSIFICATION
journal title
JOURNAL OF PHYCOLOGY
J. Phycol.
volume
50
issue
6
pages
1101 - 1119
Web of Science type
Article
Web of Science id
000345760300013
JCR category
MARINE & FRESHWATER BIOLOGY
JCR impact factor
2.844 (2014)
JCR rank
11/103 (2014)
JCR quartile
1 (2014)
ISSN
0022-3646
DOI
10.1111/jpy.12243
language
English
UGent publication?
yes
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
5917122
handle
http://hdl.handle.net/1854/LU-5917122
date created
2015-03-30 13:58:39
date last changed
2016-12-19 15:45:56
@article{5917122,
  abstract     = {Until the recent use of molecular markers, species diversity of Lobophora, an ecologically important brown algal genus with a worldwide distribution in temperate and tropical seas, has been critically underestimated. Using a DNA-based taxonomic approach, we re-examined diversity of the genus from New Caledonia in the Southwest Pacific Ocean. First, species were delineated using general mixed Yule coalescent-based and barcoding gap approaches applied to a mitochondrial cox3 data set. Results were subsequently confirmed using chloroplast psbA and rbcL data sets. Species delimitation analyses agreed well across markers and delimitation algorithms, with the barcoding gap approach being slightly more conservative. Analyses of the cox3 data set resulted in 31-39 molecular operational taxonomic units (MOTUs), four of which are previously described species (L. asiatica, L. crassa, L. nigrescens s.l., L. pachyventera). Of the remaining MOTUs for which we obtained a representative number of sequences and results are corroborated across analyses and genes, we described 10 species de novo: L. abaculusa, L. abscondita, L. densa, L. dimorpha, L. gibbera, L. hederacea, L. monticola, L. petila, L. rosacea, and L. undulata. Our study presents an excellent case of how a traditional morphology-based taxonomy fails to provide accurate estimates of algal diversity. Furthermore, the level of Lobophora diversity unveiled from a single locality in the Pacific Ocean raises important questions with respect to the global diversity of the genus, the distributions and range sizes of the individual species, as well as the mechanisms facilitating coexistence.},
  author       = {Vieira, Christophe and D'Hondt, Sofie and De Clerck, Olivier and Payri, Claude E},
  issn         = {0022-3646},
  journal      = {JOURNAL OF PHYCOLOGY},
  keyword      = {phylogeny,species delimitation,new species,New Caledonia,Lobophora,GMYC,ABGD,taxonomy,VARIEGATA PHAEOPHYCEAE,CORAL-REEF,MORPHOLOGICAL VARIATION,MIXED MODELS,DNA,DELIMITATION,ALGAE,SEQUENCES,TAXONOMY,CLASSIFICATION},
  language     = {eng},
  number       = {6},
  pages        = {1101--1119},
  title        = {Toward an inordinate fondness for stars, beetles and Lobophora?: species diversity of the genus Lobophora (Dictyotales, Phaeophyceae) in New Caledonia},
  url          = {http://dx.doi.org/10.1111/jpy.12243},
  volume       = {50},
  year         = {2014},
}

Chicago
Vieira, Christophe, Sofie D’Hondt, Olivier De Clerck, and Claude E Payri. 2014. “Toward an Inordinate Fondness for Stars, Beetles and Lobophora?: Species Diversity of the Genus Lobophora (Dictyotales, Phaeophyceae) in New Caledonia.” Journal of Phycology 50 (6): 1101–1119.
APA
Vieira, C., D’Hondt, S., De Clerck, O., & Payri, C. E. (2014). Toward an inordinate fondness for stars, beetles and Lobophora?: species diversity of the genus Lobophora (Dictyotales, Phaeophyceae) in New Caledonia. JOURNAL OF PHYCOLOGY, 50(6), 1101–1119.
Vancouver
1.
Vieira C, D’Hondt S, De Clerck O, Payri CE. Toward an inordinate fondness for stars, beetles and Lobophora?: species diversity of the genus Lobophora (Dictyotales, Phaeophyceae) in New Caledonia. JOURNAL OF PHYCOLOGY. 2014;50(6):1101–19.
MLA
Vieira, Christophe, Sofie D’Hondt, Olivier De Clerck, et al. “Toward an Inordinate Fondness for Stars, Beetles and Lobophora?: Species Diversity of the Genus Lobophora (Dictyotales, Phaeophyceae) in New Caledonia.” JOURNAL OF PHYCOLOGY 50.6 (2014): 1101–1119. Print.