Molecular phylogeny of sea-skaters (Halobates Eschscholtz, 1822), relationship between Halobatini and Metrocorini, and a catalogue of the subfamily Halobatinae (Hemiptera: Heteroptera: Gerridae)

2020 ◽  
Vol 51 (2) ◽  
pp. 139-240 ◽  
Author(s):  
Cristian Román-Palacios ◽  
Jakob Damgaard ◽  
Lanna Cheng ◽  
Felipe Ferraz Figueiredo Moreira ◽  
Terumi Ikawa ◽  
...  
Keyword(s):  
16S Rrna ◽  
Molecular Phylogeny ◽  
Phylogenetic Relationships ◽  
Common Ancestor ◽  
Open Ocean ◽  
Rrna Genes ◽  
28S Rrna ◽  
The Common ◽  
Geographic Distributions

We investigated the phylogenetic relationships among seven of the ten Halobatinae genera (Heteroptera: Gerridae) based on COI+II, 16S rRNA, and 28S rRNA genes. Our analyses recovered monophyly of Halobatinae, and suggested paraphyly of Metrocorini caused by the position of Ventidius and Esakia. Since our phylogenies did not infer monophyly of the subgenus Halobates (s.str.) within Halobatini, we synonymized Austrobates and Halobates (Hilliella) with Halobates. We confirmed that (1) the limnic lifestyle of Metrocorini was ancestral in Halobatinae, (2) the marine lifestyle evolved only once in the common ancestor of Asclepios + Halobates, (3) the limnic lifestyle of some members of Halobates was independently derived from marine ancestors, and that (4) the open ocean was colonized at least three times in Halobates. A catalogue of Halobatinae organized according to an updated classification is presented, including all known geographic distributions, bibliographical references, and additional notes to all species of the subfamily.

Whale falls, multiple colonisations of the deep, and the phylogeny of Hesionidae (Annelida)

2015 ◽  
Vol 29 (2) ◽  
pp. 105 ◽  
Author(s):  
Mindi Summers ◽  
Fredrik Pleijel ◽  
Greg W. Rouse
Keyword(s):  
New Species ◽  
Maximum Likelihood ◽  
16S Rrna ◽  
Deep Sea ◽  
Phylogenetic Relationships ◽  
18S Rrna ◽  
Shallow Waters ◽  
28S Rrna ◽  
Mitochondrial Cytochrome ◽  
New Members

Phylogenetic relationships within Hesionidae Grube, 1850 are assessed via maximum parsimony and maximum likelihood analyses of mitochondrial (cytochrome c oxidase subunit I and 16S rRNA) and nuclear (18S rRNA, and 28S rRNA) data. The analyses are based on 42 hesionid species; six of these being new species that are described here. The new species, all from deep (>200 m depth) benthic environments (including whale falls) in the eastern Pacific, are Gyptis shannonae, sp. nov., Neogyptis julii, sp. nov., Sirsoe sirikos, sp. nov., Vrijenhoekia ketea, sp. nov., Vrijenhoekia falenothiras, sp. nov., and Vrijenhoekia ahabi, sp. nov. The molecular divergence among the new members of Vrijenhoekia is pronounced enough to consider them cryptic species, even though we cannot distinguish among them morphologically. Our results also showed that the subfamily Hesioninae Grube, 1850, as traditionally delineated, was paraphyletic. We thus restrict Hesioninae to include only Hesionini Grube, 1850 and refer the remaining members to Psamathinae Pleijel, 1998. The present study increases the number of hesionid species associated with whale falls from one to six and markedly increases the number of described deep-sea hesionid taxa. There appear to have been multiple colonisations of the deep sea from shallow waters by hesionids, though further sampling is warranted.

scholarly journals 16S rRNA genes reveal stratified open ocean bacterioplankton populations related to the Green Non-Sulfur bacteria.

1996 ◽  
Vol 93 (15) ◽  
pp. 7979-7984 ◽  
Author(s):  
S. J. Giovannoni ◽  
M. S. Rappe ◽  
K. L. Vergin ◽  
N. L. Adair
Keyword(s):  
16S Rrna ◽  
Open Ocean ◽  
16S Rrna Genes ◽  
Rrna Genes ◽  
Sulfur Bacteria

Systematic relationships of the Taeniapterini (Diptera: Micropezidae, Taeniapterinae)

Zootaxa ◽  
2021 ◽  
Vol 5004 (2) ◽  
pp. 370-384
Author(s):  
GUSTAVO BORGES FERRO ◽  
JEFFREY H. SKEVINGTON ◽  
STEPHEN A. MARSHALL ◽  
SCOTT KELSO
Keyword(s):  
Bayesian Inference ◽  
Maximum Likelihood ◽  
Cytochrome C ◽  
16S Rrna ◽  
Molecular Phylogeny ◽  
Cytochrome C Oxidase ◽  
28S Rrna ◽  
Mitochondrial Cytochrome ◽  
Oxidase Subunit ◽  
Systematic Relationships

A molecular phylogeny for the Taeniapterinae is presented based on mitochondrial (cytochrome c oxidase subunit I, COI), ribosomal (16S rRNA and 28S rRNA) and nuclear (EF-1α and CAD) genes of 48 specimens including 40 species. Maximum likelihood and Bayesian inference were used to analyze the total concatenated dataset of 8769 bp. The results confirm that tribal classifications in Taeniapterinae are artificial and support the separation of Paragrallomyia Hendel and Taeniaptera sensu Ferro & Marshall (2020).

scholarly journals Testing the higher-level phylogenetic classification of Digenea (Platyhelminthes, Trematoda) based on nuclear rDNA sequences before entering the age of the ‘next-generation’ Tree of Life

2019 ◽  
Vol 93 (3) ◽  
pp. 260-276 ◽  
Author(s):  
G. Pérez-Ponce de León ◽  
D.I. Hernández-Mena
Keyword(s):  
Phylogenetic Relationships ◽  
Phylogenetic Signal ◽  
28S Rdna ◽  
Rrna Genes ◽  
Rrna Gene ◽  
28S Rrna ◽  
Next Generation ◽  
Phylogenetic Classification ◽  
Rdna Sequences

AbstractDigenea Carus, 1863 represent a highly diverse group of parasitic platyhelminths that infect all major vertebrate groups as definitive hosts. Morphology is the cornerstone of digenean systematics, but molecular markers have been instrumental in searching for a stable classification system of the subclass and in establishing more accurate species limits. The first comprehensive molecular phylogenetic tree of Digenea published in 2003 used two nuclear rRNA genes (ssrDNA = 18S rDNA and lsrDNA = 28S rDNA) and was based on 163 taxa representing 77 nominal families, resulting in a widely accepted phylogenetic classification. The genetic library for the 28S rRNA gene has increased steadily over the last 15 years because this marker possesses a strong phylogenetic signal to resolve sister-group relationships among species and to infer phylogenetic relationships at higher levels of the taxonomic hierarchy. Here, we have updated the database of 18S and 28S rRNA genes until December 2017, we have added newly generated 28S rDNA sequences and we have reassessed phylogenetic relationships to test the current higher-level classification of digeneans (at the subordinal and subfamilial levels). The new dataset consisted of 1077 digenean taxa allocated to 106 nominal families for 28S and 419 taxa in 98 families for 18S. Overall, the results were consistent with previous higher-level classification schemes, and most superfamilies and suborders were recovered as monophyletic assemblages. With the advancement of next-generation sequencing (NGS) technologies, new phylogenetic hypotheses from complete mitochondrial genomes have been proposed, although their power to resolve deep levels of trees remains controversial. Since data from NGS methods are replacing other widely used markers for phylogenetic analyses, it is timely to reassess the phylogenetic relationships of digeneans with conventional nuclear rRNA genes, and to use the new analysis to test the performance of genomic information gathered from NGS, e.g. mitogenomes, to infer higher-level relationships of this group of parasitic platyhelminths.

Molecular phylogeny of the higher taxa of Odonata (Insecta) inferred from COI, 16S rRNA, 28S rRNA, and EF1-α sequences

2014 ◽  
Vol 44 (2) ◽  
pp. 65-79 ◽  
Author(s):  
Min Jee Kim ◽  
Kwang Soo Jung ◽  
Nam Sook Park ◽  
Xinlong Wan ◽  
Ki-Gyoung Kim ◽  
...  
Keyword(s):  
16S Rrna ◽  
Molecular Phylogeny ◽  
28S Rrna ◽  
Higher Taxa

Phylogenetic relationships of Hynobius naevius (Amphibia: Caudata) as revealed by mitochondrial 12S and 16S rRNA genes

2006 ◽  
Vol 38 (3) ◽  
pp. 677-684 ◽  
Author(s):  
Atsushi Tominaga ◽  
Masafumi Matsui ◽  
Kanto Nishikawa ◽  
Shingo Tanabe
Keyword(s):  
16S Rrna ◽  
Phylogenetic Relationships ◽  
16S Rrna Genes ◽  
Rrna Genes

scholarly journals Molecular phylogeny of thoracican barnacles based on the mitochondrial 12S and 16S rRNA genes

2004 ◽  
Vol 21 (2) ◽  
pp. 47-54 ◽  
Author(s):  
Rowshan Ara Begum ◽  
Toshiyuki Yamaguchi ◽  
Shugo Watabe
Keyword(s):  
16S Rrna ◽  
Molecular Phylogeny ◽  
16S Rrna Genes ◽  
Rrna Genes

scholarly journals Molecular phylogeny of common sun skink, Eutropis (Squamata: Scincidae), of northwestern part of Bangladesh

2019 ◽  
Vol 47 (1) ◽  
pp. 13-25
Author(s):  
Mosharrof Hossain ◽  
Che Jing
Keyword(s):  
Bayesian Inference ◽  
Maximum Likelihood ◽  
16S Rrna ◽  
Molecular Phylogeny ◽  
Posterior Probability ◽  
Common Ancestor ◽  
Northwestern Part ◽  
Congeneric Species ◽  
Relationship Of ◽  
Posterior Probability Support

A study on the phylogenetic relationship of Bangladeshi Skink confirmed species as Eutropis multifasciata by Bayesian inference (BI) (100%) and 98% node support to maximum likelihood (ML) tree topology, respectively. The sequence divergences between Eutropis multifasciata and other congeneric species were significant, ranging from 0.1 to 13.6% for 16S rRNA. Intraspecific genetic divergence within E. multifasciata was estimated 10.3%. E. multifasciata formed a distinct clade with high posterior probability support. This maiden study on Bangladeshi Skink results support that one monophyletic subgroup containing all specimens of E. multifasciata and all recently recognized E. multifasciata populations have evolved from one common ancestor. Bangladesh J. Zool. 47(1): 13-25, 2019

Molecular phylogeny of Barbin fishes of North - East Indiabased on mitochondrial 16SrRNA gene sequences

2016 ◽  
Author(s):  
N. Sobita ◽  
Ch. Basudha
Keyword(s):  
16S Rrna ◽  
Molecular Phylogeny ◽  
16S Rrna Genes ◽  
Rrna Genes ◽  
Maximum Parsimony Tree ◽  
North East India ◽  
North East ◽  
Parsimony Tree ◽  
High Bootstrap ◽  
16Srrna Gene

The Barbin fishes (Cypriniformes: Barbinae) have achieved great diversity in the world and cosmopolitan in distribution but their phyletic classification is ambiguous. Molecular phylogeny of barbin fishes of North-East India was studied by using mitochondrial 16S rRNA sequences. Partial sequences (540-615 bp) of mit. 16S rRNA genes of four species of barbin fishes – Pethia atra, Puntius chola, P. javanicus, and P. sophore were generated and sequences of 7 species were downloaded from GenBank for present study. The aim of our present study is to resolve the taxonomic relationship and to establish the molecular phylogeny of Barbin fishes of North-East India based on mitochondrial 16S rRNA genes sequences. The Maximum Parsimony Tree shows three clusters with high bootstrap value and present data indicates that all fishes in this group had a common ancestor but now they have separated into distinct evolutionary lineages.

Strike-induced chemosensory searching by the anguid lizard Elgaria coerulea

1995 ◽  
Vol 16 (2) ◽  
pp. 147-156 ◽  
Author(s):  
William E. Cooper
Keyword(s):  
Natural Selection ◽  
Phylogenetic Relationships ◽  
Common Ancestor ◽  
Strong Association ◽  
Tongue Flick ◽  
Widespread Occurrence ◽  
Single Origin ◽  
Phylogenetic Inertia ◽  
The Common ◽  
Limited Duration

AbstractStrike-induced chemosensory searching (SICS), including a post-strike elevation in tongue-flick rate (PETF) and searching movements following experimental removal of prey from the predator's mouth, is demonstrated to occur in an anguid lizard, Elgaria coerulea. This finding confirms predictions based on the previously established widespread occurrence of SICS in scleroglossan (especially autarchoglossan) lizard families and on a strong association between SICS and active foraging. Reasons why SICS should be favored by natural selection in active foragers are discussed, but the presence of SICS in anguids is attributed to phylogenetic inertia rather than adaptation. SICS was statistically significant only during the first two minutes in E. coerulea. Its limited duration in an anguid and much greater duration in helodermatids, varanids, and snakes suggest that prolonged SICS may have had a single origin in the common ancestor of Varanoidea or, much less likely, of (Varanoidea + Xenosauridae). Uncertainties about origins due to missing data on certain taxa and to unresolved phylogenetic relationships within Seleroglossa are discussed.

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