Phylogeny of sea cucumber (Echinodermata: Holothuroidea) as inferred from 16S Mitochondrial rRNA gene sequences

This study aimed to determine phylogenetic relationship between and among selected species of sea cucumbers (Echinodermata: Holothuroidea) using 16S mitochondrial ribosomal RNA (rRNA) gene. Phylogenetic analyses of 37 partial sequences of 16S mitochondrial rRNA gene using three main methods namely...

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Main Author: Kamarudin, Kamarul Rahim
Format: Article
Language:English
Published: SPC Beche-de-mer Information Bulletin 2011
Subjects:
Online Access:http://irep.iium.edu.my/12715/1/2011_BDM31_Jan_2011_Kamarul_SM_2010.pdf
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author Kamarudin, Kamarul Rahim
author_facet Kamarudin, Kamarul Rahim
author_sort Kamarudin, Kamarul Rahim
collection IIUM
description This study aimed to determine phylogenetic relationship between and among selected species of sea cucumbers (Echinodermata: Holothuroidea) using 16S mitochondrial ribosomal RNA (rRNA) gene. Phylogenetic analyses of 37 partial sequences of 16S mitochondrial rRNA gene using three main methods namely neighbour joining (NJ), maximum parsimony (MP) and maximum likelihood (ML) showed the presence of five main genera of sea cucumbers: Molpadia from order Molpadiida and four genera of order Aspidochirotida namely Holothuria, Stichopus, Bohadschia and Actinopyga. All of the 17 species obtained from Malaysia distributed among the main genera except within Actinopyga. Interestingly, Holothuria excellens was out of Holothuria group causing Holothuria to be paraphyletic. High bootstrap value and consistent clustering made Molpadia, Stichopus, Bohadschia and Actinopyga monophyletic. The relationship of Actinopyga with the other genera was un-clarified and Stichopus was sister to Molpadia. The latter finding caused the resolution at order level unclear. The pairwise genetic distance calculated using Kimura 2-parameter model further supported and verified findings from the phylogenetic trees. Further studies with more samples and different mitochondrial DNA genes need to be done to get a better view and verification on the molecular phylogeny of sea cucumbers.
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spelling oai:generic.eprints.org:127152012-02-08T01:34:57Z http://irep.iium.edu.my/12715/ Phylogeny of sea cucumber (Echinodermata: Holothuroidea) as inferred from 16S Mitochondrial rRNA gene sequences Kamarudin, Kamarul Rahim QL Zoology This study aimed to determine phylogenetic relationship between and among selected species of sea cucumbers (Echinodermata: Holothuroidea) using 16S mitochondrial ribosomal RNA (rRNA) gene. Phylogenetic analyses of 37 partial sequences of 16S mitochondrial rRNA gene using three main methods namely neighbour joining (NJ), maximum parsimony (MP) and maximum likelihood (ML) showed the presence of five main genera of sea cucumbers: Molpadia from order Molpadiida and four genera of order Aspidochirotida namely Holothuria, Stichopus, Bohadschia and Actinopyga. All of the 17 species obtained from Malaysia distributed among the main genera except within Actinopyga. Interestingly, Holothuria excellens was out of Holothuria group causing Holothuria to be paraphyletic. High bootstrap value and consistent clustering made Molpadia, Stichopus, Bohadschia and Actinopyga monophyletic. The relationship of Actinopyga with the other genera was un-clarified and Stichopus was sister to Molpadia. The latter finding caused the resolution at order level unclear. The pairwise genetic distance calculated using Kimura 2-parameter model further supported and verified findings from the phylogenetic trees. Further studies with more samples and different mitochondrial DNA genes need to be done to get a better view and verification on the molecular phylogeny of sea cucumbers. SPC Beche-de-mer Information Bulletin 2011 Article NonPeerReviewed application/pdf en http://irep.iium.edu.my/12715/1/2011_BDM31_Jan_2011_Kamarul_SM_2010.pdf Kamarudin, Kamarul Rahim (2011) Phylogeny of sea cucumber (Echinodermata: Holothuroidea) as inferred from 16S Mitochondrial rRNA gene sequences. SPC Beche-de-mer Information Bulletin, 31 (Jan). p. 69. ISSN 1025-4943 http://www.spc.int/DigitalLibrary/Doc/FAME/InfoBull/BDM/31/BDM31.pdf
spellingShingle QL Zoology
Kamarudin, Kamarul Rahim
Phylogeny of sea cucumber (Echinodermata: Holothuroidea) as inferred from 16S Mitochondrial rRNA gene sequences
title Phylogeny of sea cucumber (Echinodermata: Holothuroidea) as inferred from 16S Mitochondrial rRNA gene sequences
title_full Phylogeny of sea cucumber (Echinodermata: Holothuroidea) as inferred from 16S Mitochondrial rRNA gene sequences
title_fullStr Phylogeny of sea cucumber (Echinodermata: Holothuroidea) as inferred from 16S Mitochondrial rRNA gene sequences
title_full_unstemmed Phylogeny of sea cucumber (Echinodermata: Holothuroidea) as inferred from 16S Mitochondrial rRNA gene sequences
title_short Phylogeny of sea cucumber (Echinodermata: Holothuroidea) as inferred from 16S Mitochondrial rRNA gene sequences
title_sort phylogeny of sea cucumber echinodermata holothuroidea as inferred from 16s mitochondrial rrna gene sequences
topic QL Zoology
url http://irep.iium.edu.my/12715/1/2011_BDM31_Jan_2011_Kamarul_SM_2010.pdf
work_keys_str_mv AT kamarudinkamarulrahim phylogenyofseacucumberechinodermataholothuroideaasinferredfrom16smitochondrialrrnagenesequences