Molecular phylogenetic study of several eelpout fishes (Perciformes, Zoarcoidei) from Far Eastern seas on the basis of the nucleotide sequences of the mitochondrial cytochrome oxidase 1 gene (Co-1)

2012 ◽  
Vol 48 (2) ◽  
pp. 208-223 ◽  
Author(s):  
S. V. Turanov ◽  
Yu. Ph. Kartavtsev ◽  
V. V. Zemnukhov
Keyword(s):  
Cytochrome Oxidase ◽  
Nucleotide Sequences ◽  
Phylogenetic Study ◽  
Mitochondrial Cytochrome ◽  
Cytochrome Oxidase 1 ◽  
Molecular Phylogenetic Study ◽  
Molecular Phylogenetic ◽  
Far Eastern ◽  
Mitochondrial Cytochrome Oxidase ◽  
Far Eastern Seas

Evolutionary analyses of phylum Chaetognatha based on mitochondrial cytochrome oxidase I gene

2020 ◽  
Vol 44 (6) ◽  
pp. 508-518
Author(s):  
Sam PETER ◽  
Manoj Kumar BHASKARAN NAIR ◽  
Devika PILLAI
Keyword(s):  
Cytochrome Oxidase ◽  
Ribonucleic Acid ◽  
Cytochrome Oxidase I ◽  
Rrna Genes ◽  
Coi Gene ◽  
Phylogenetic Study ◽  
Mitochondrial Cytochrome ◽  
Ribosomal Ribonucleic Acid ◽  
Developmental Features ◽  
Mitochondrial Cytochrome Oxidase

Chaetognaths (arrow worms) are an enigmatic group of transparent planktonic invertebrates and play an important role in the marine food web. Their morphological and developmental features have raised extensive debates since the discovery of the phylum in the 18th century. Uncertainty in the phylogenetic placement of certain chaetognath species still exists and is puzzling many scientists who have tried to clarify this task. Studies using a portion of both small subunit ribosomal ribonucleic acid (SSU rRNA) and large subunit ribosomal ribonucleic acid (LSU rRNA) genes when integrated with conventional taxonomy were contributed to resolve taxonomical issues in this group. Here we present the first phylogenetic study of Chaetognatha based on a portion of mitochondrial cytochrome oxidase I (COI) gene and compare our results with the earlier morphological and molecular evolutionary hypotheses. This study includes 16 extant species, representing 8 genera and 6 of which are among the 9 extant families. We recommend the following clade structure for the phylum: Aphragmophora comprising Sagittidae with Pterosagittidae and Krohnittidae included in the Sagittidae and Phragmophora comprising Eukrohniidae, Spadellidae, and Heterokrohniidae. Phylogenetic analyses also supported the division of Phragmophora into two monophyletic groups: the Monophragmophora and Biphragmophora. Moreover, Ctenodontina/Flabellodontina and Syngonata/Chorismogonata suborders were not validated. Precise phylogenetic investigations using various molecular markers and specimens from diverse regions are definitely needed to provide an exact evolutionary concept on this phylum.

Mitochondrial Cytochrome oxidase 1 phylogeny supports alternative taxonomic scheme for the marine Haplosclerida

2007 ◽  
Vol 87 (6) ◽  
pp. 1577-1584 ◽  
Author(s):  
Jean Raleigh ◽  
Niamh E. Redmond ◽  
Emma Delahan ◽  
Seamus Torpey ◽  
Rob W.M. van Soest ◽  
...  
Keyword(s):  
Cytochrome Oxidase ◽  
Phylogenetic Signal ◽  
Molecular Data ◽  
Rrna Gene ◽  
28S Rrna ◽  
Mitochondrial Cytochrome ◽  
Freshwater Sponges ◽  
Cytochrome Oxidase 1 ◽  
Mitochondrial Cytochrome Oxidase

Recent molecular studies have shown that the sponge order Haploslcerida is polyphyletic as the freshwater sponges appear to be more closely related to other demosponges than they are to the marine haplosclerids. Within the marine haplosclerid clade relationships viewed via 18S and 28S rRNA gene phylogenies suggest that the suborders and many families and genera are also polyphyletic. However, both of these genes are on the same locus and do not evolve completely independently. We have analysed mitochondrial Cytochrome oxidase 1 gene fragments from 44 species of marine Haplosclerida and show conclusively that the classification of this group needs complete revision. Molecular data show a very complicated phylogeny supporting very few morphological hypotheses and little geographical pattern. However, the molecular data contain a great deal of phylogenetic signal at many taxonomic levels and support phylogenies drawn from the other genes.

scholarly journals Phylogenetic analysis of transparent gobies in three Sumatran lakes, inferred from mitochondrial Cytochrome Oxidase I (COI) gene

2019 ◽  
Vol 21 (1) ◽  
Author(s):  
DEWI IMELDA ROESMA ◽  
DJONG HON TJONG ◽  
DYTA RABBANI AIDIL
Keyword(s):  
Phylogenetic Analysis ◽  
Cytochrome Oxidase ◽  
Cytochrome Oxidase I ◽  
Coi Gene ◽  
Phylogenetic Study ◽  
Mitochondrial Cytochrome ◽  
Base Pairs ◽  
Low Genetic Diversity ◽  
West Sumatra ◽  
Mitochondrial Cytochrome Oxidase

Abstract. Roesma DI, Tjong DH, Aidil DR. 2020. Phylogenetic analysis of transparent gobies in three Sumatran lakes, inferred from mitochondrial Cytochrome Oxidase I (COI) gene. Biodiversitas 21: 43-48. The transparent gobies fish found in three lakes in Sumatra island is known as Rinuak fish (in Maninjau Lake and Singkarak Lake, West Sumatra, Indonesia) or Badar fish (in Siais Lake, North Sumatra, Indonesia), and are morphologically very similar to the Gobiopterus brachypterus. The phylogenetic study was carried out by analyzing 619 base pairs of the mitochondrial DNA cytochrome oxidase subunit I (COI) gene in 12 fish individuals from the three lakes. Rinuak and Badar fish in three populations have four haplotypes. The sequence divergences in and between populations are very low (0.0-0.5%). This value indicates that Rinuak and Badar fish are the same species with low genetic diversity. The phylogenetic tree illustrates that this fish belongs to the group of Gobiidae and a sister taxon from G. brachypterus.

Sign in / Sign up

Export Citation Format

Share Document