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.

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.

Five new species of Myrsidea Waterston (Phthiraptera: Menoponidae) from tanagers (Passeriformes: Thraupidae) in Panama

Zootaxa ◽  
2009 ◽  
Vol 2200 (1) ◽  
pp. 61-68 ◽  
Author(s):  
ROGER D. PRICE ◽  
KEVIN P. JOHNSON
Keyword(s):  
New Species ◽  
Cytochrome Oxidase ◽  
Species Group ◽  
Cytochrome Oxidase I ◽  
Coi Gene ◽  
Mitochondrial Cytochrome ◽  
Avian Family ◽  
Mitochondrial Cytochrome Oxidase

There are 23 species of Myrsidea recognized from passerine thraupid hosts. Five new species parasitic on members of this avian family are described. They and their type hosts are Myrsidea rozsai ex the Thick-billed Euphonia, Euphonia laniirostris d'Orbigny & Lafresnaye, M. cruickshanki ex the Carmiol's Tanager, Chlorothraupis carmioli (Lawrence), M. patersoni ex the Grey-headed Tanager, Eucometis penicillata (Spix), M. pagei ex the Crimson-backed Tanager, Ramphocelus dimidiatus Lafresnaye, and M. valimi ex the Tawny-capped Euphonia, Euphonia anneae Cassin. The first species is placed in the bonariensis species group, while the remaining four are placed in the fusca species group. Sequences of a portion of the mitochondrial cytochrome oxidase I (COI) gene were compared to other species of Myrsidea and were highly divergent.

scholarly journals MOLECULAR IDENTIFICATION OF EXOTIC FRUIT FLY Bactrocera occipitalis (DIPTERA: TEPHRITIDAE) USING MITOCHONDRIAL CYTOCHROME OXIDASE I (COI) GENE

2018 ◽  
Vol 6 (1) ◽  
pp. 34
Author(s):  
I Putu Sudiarta ◽  
Dwi Martiningsia ◽  
I Nyoman Wijaya
Keyword(s):  
Cytochrome Oxidase ◽  
Molecular Identification ◽  
Fruit Fly ◽  
Fruit Flies ◽  
Cytochrome Oxidase I ◽  
Coi Gene ◽  
Morphological Identification ◽  
Mitochondrial Cytochrome ◽  
Accurate Identification ◽  
Mitochondrial Cytochrome Oxidase

Some of fruit flies have been reported as the important pest on fruits and vegetables in the world. Agricultural Quarantine Agency Denpasar reported that there was new coming species (exotic) of fruit flies in Bali in 2014 based on the morphological identification, namely Bactrocera occipitalis. However Bactrocera dorsalis complex have similar morphological characters and have a less distinctive character for taxonomic identification, therefore it is difficult to identify fruit flies accurately. Based on that phenomena, the accurate identification is needed. One of the more accurate identification techniques is based on molecular identification using DNA-based barcode. To identify fruit flies, DNA-based barcode using mitochondrial cytochrome oxidase I (COI) gene has been conducted. PCR analysis using Fruit Fly MT-CO1-F (FFMT-CO1-F) 5’-GGAGCATTAATYGGRGAYG-3’ as forward primer and HCO 5’-TAAACTTCAGGGTGACCAAAAATCA-3’ as reverse primer was successfully amplified around 600 bp of COI gene of fruit flies. Based on similarity of sequence product, the species was identifiedas Bactrocera occipitalis and same result was revealed using morphological identification. Phylogenetic analysis of B. occipitalis based on COI genes showed that B. occipitalis from Bali were in the same groups with Bactrocera species from Tarakan and Philippines. In addition, Bactrocera occipitalis as exotic fruit fly is a new report in Bali, Indonesia.

New host records and descriptions of five new species of Myrsidea Waterston, 1915 (Phthiraptera: Menoponidae) from passerine birds (Aves: Passeriformes)

Zootaxa ◽  
2011 ◽  
Vol 3097 (1) ◽  
pp. 1 ◽  
Author(s):  
MICHEL P. VALIM ◽  
ROGER D. PRICE ◽  
KEVIN P. JOHNSON
Keyword(s):  
New Species ◽  
Cytochrome Oxidase ◽  
Cytochrome Oxidase I ◽  
Coi Gene ◽  
Mitochondrial Cytochrome ◽  
Passerine Birds ◽  
New Host ◽  
Mitochondrial Cytochrome Oxidase ◽  
New Host Records

Three species of previously described Myrsidea from the birds Lochmias nematura obscurata Cabanis, Automolus ochrolaemus (Tschudi, 1844) (both Furnariidae) and Pachyramphus cinnamomeus Lawrence, 1861 (Cotingidae) are redescribed, including new host and geographical records. Five new species of Myrsidea from the Neotropics are described and illustrated. These species and their type hosts are: M. waterstoni n. sp. from Anabacerthia variegaticeps (Sclater), M. meyi n. sp. from Syndactyla subalaris (Sclater) (Furnariidae), M. dalgleishi n. sp. from Glyphorynchus spirurus (Vieillot) (Dendrocolaptidae), M. cicchinoi n. sp. from Rhynchocyclus olivaceus (Temminck) (Tyrannidae), and M. castroae n. sp. from Atlapetes albinucha gutturalis (Lafresnaye) (Emberizidae). Sequences of a portion of the mitochondrial cytochrome oxidase I (COI) gene for four of these new species were highly divergent from those of other species of Myrsidea.

Redefinition of Cornexcisia Fan & Kano, 2000 (Diptera: Sarcophagidae), with the first description of the female of Sarcophaga kurahashii (Shinonaga & Tumrasvin, 1979)

Zootaxa ◽  
2019 ◽  
Vol 4668 (3) ◽  
pp. 410-420
Author(s):  
CHAO WANG ◽  
YUNYUN GAO ◽  
THOMAS PAPE ◽  
DONG ZHANG
Keyword(s):  
Cytochrome Oxidase ◽  
Coi Gene ◽  
Mitochondrial Cytochrome ◽  
Gene Sequences ◽  
Cytochrome Oxidase Subunit ◽  
Cytochrome Oxidase Subunit I ◽  
Mitochondrial Cytochrome Oxidase Subunit ◽  
Senior Synonym ◽  
First Time ◽  
Mitochondrial Cytochrome Oxidase

Sarcophaga Meigen, 1826 is proposed as a senior synonym of Cornexcisia Fan & Kano, 2000, syn. nov. and Fanzideia Xue, Verves & Du, 2011, syn. nov. Cornexcisia Fan & Kano, 2000, stat. rev. is given status as a subgenus and is considered a senior synonym of Fanzideia Xue, Verves & Du, 2011, syn. nov. at the subgeneric level. Cornexcisia is argued to contain S. (Cornexcisia) longicornuta (Fan & Kano, 2000), comb. nov., S. (C.) cygnocerca (Xue, Verves & Du, 2011), comb. nov., S. (C.) kurahashii (Shinonaga & Tumrasvin, 1979), subgen. comb. nov. (from Phallosphaera Rohdendorf) and S. (C.) suthep Pape & Bänziger, 2003, subgen. comb. nov. (from Rosellea Rohdendorf). Sarcophaga (C.) kurahashii is newly recorded from China (Yunnan), the male is redescribed and the female is described for the first time, supported by photographs, illustrations and mitochondrial cytochrome oxidase subunit I (COI) gene sequences. Species of Cornexcisia share an exceptionally long postpedicel in the female and the following apomorphic distiphallic appendages in the male: juxta ventro-proximally with an apically divided arm with cuticular pile, and lateral styli bifurcated from the base with each branch elongate, gently curved and slightly expanded apically. A key to the species of Cornexcisia is provided. 

Sign in / Sign up

Export Citation Format

Share Document