Molecular systematics of the Asian torrent minnows (Ostariophysi: Psilorhynchidae) inferred from nuclear and mitochondrial DNA sequence data

The phylogenetic relationships between members of the South Asian family Psilorhynchidae are investigated using both mitochondrial and nuclear DNA sequence data. Phylogenetic hypotheses were derived from maximum likelihood and maximum parsimony analyses of a three gene concatenated data set, includi...

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Published inJournal of zoological systematics and evolutionary research Vol. 53; no. 1; pp. 33 - 44
Main Authors Conway, Kevin W., Britz, Ralf, Shrestha, Jiwan, Manimekalan, Arunachalam, Rüber, Lukas
Format Journal Article
LanguageEnglish
Published Berlin Blackwell Publishing Ltd 01.02.2015
Hindawi Limited
Subjects
Cypriniformes
Cyprinoidea
Freshwater
Indo-Burma
maximum likelihood
maximum parsimony
Ostariophysi
Psilorhynchidae
Psilorhynchus
Western Ghats
India
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Summary:The phylogenetic relationships between members of the South Asian family Psilorhynchidae are investigated using both mitochondrial and nuclear DNA sequence data. Phylogenetic hypotheses were derived from maximum likelihood and maximum parsimony analyses of a three gene concatenated data set, including cytochrome c oxidase subunit 1 (640 bp), cytochrome b (1140 bp) and exon 3 of the recombination‐activating gene 1 (~1500 bp). Our investigation provides strong support for the monophyly of two species groups of Psilorhynchus (the P. balitora and P. nudithoracicus species groups) and corroborates previous hypotheses on the phylogenetic position of the Western Ghats species Psilorhynchus tenura based on morphology. Basal relationships within Psilorhynchus were poorly supported and are worthy of further investigation. A fossil calibrated relaxed molecular clock estimates the split between Psilorhynchus and its sister group to have occurred within the Eocene/Oligocene, with subsequent diversification in the Miocene. Members of the South Asian freshwater fish genus Psilorhynchus inhabit fast flowing often torrential rivers and streams throughout the mountainous Indo‐Burmese region and the Western Ghats of south India. Our study of the phylogenetic relationships of Psilorhynchus using both mitochondrial and nuclear DNA sequence data revealed strong support for the monophyly of Psilorhynchus and corroborates previous morphology‐based hypotheses.
Bibliography:ark:/67375/WNG-M568QW7G-D
The Systematics Association (UK) Systematics Research Fund
NSF - No. DEB-0808446
Figure S1. Maximum likelihood phylogram (−In L −36923.230793) obtained from Garli analysis of the concatenated data set. Numbers above branches represent bootstrap values. Figure S2. Maximum likelihood phylograms obtained from the analyses of the cox1 (a), cytb (b) and RAG1 (c) data sets. Numbers above branches represent bootstrap values. Black bar highlights Psilorhynchus clade. The log likelihood scores (−In L) for the three phylograms are as follows: −8055.571595 (a); −16567.95994 (b); −11569.54549 (c). Figure S3. Consensus trees of equally parsimonious cladograms obtained from the MP analysis of the cox1 (a), cytb (b) and RAG1 (c) data sets. Numbers above branches represent bootstrap values. Black bar(s) highlights Psilorhynchus clade(s). The number of equally parsimonious cladograms summarized in each of the three consensus trees are as follows: 8 (2100 steps; CI = 0.24; RI = 0.53) (a); 2 (4418 steps; CI = 0.238; RI = 0.531) (b); 9 (2114 steps; CI = 0.486; RI = 0.732) (c).
Natural History Museum Collection Enhancement Grant
Texas Agrilife Research of Texas A&M University - No. TEX09452
ArticleID:JZS12090
istex:5AD933F8C41E849C43EE3B8660F0ECEC0AD7B649
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0947-5745
1439-0469
DOI:10.1111/jzs.12090