Hidden Morphological Support for the Phylogenetic Placement of Pseudoryx nghetinhensis with Bovine Bovids: A Combined Analysis of Gross Anatomical Evidence and DNA Sequences from Five Genes

2000 ◽  
Vol 49 (3) ◽  
pp. 515-538 ◽  
Author(s):  
John Gatesy ◽  
Peter Arctander
Keyword(s):  
Dna Sequences ◽  
Combined Analysis ◽  
Phylogenetic Placement ◽  
Anatomical Evidence

Discovery of New Genera Challenges the Subtribal Classification of Tok-Tok Beetles (Coleoptera: Tenebrionidae: Sepidiini)

2021 ◽  
Vol 5 (2) ◽  
Author(s):  
Olivia M Gearner ◽  
Marcin J Kamiński ◽  
Kojun Kanda ◽  
Kali Swichtenberg ◽  
Aaron D Smith
Keyword(s):  
Dna Sequences ◽  
Species Group ◽  
Phylogenetic Placement ◽  
Darkling Beetles ◽  
Species Groups ◽  
Taxonomic Groups ◽  
Inference Methods ◽  
A New Species ◽  
Coleoptera Tenebrionidae

Abstract Sepidiini is a speciose tribe of desert-inhabiting darkling beetles, which contains a number of poorly defined taxonomic groups and is in need of revision at all taxonomic levels. In this study, two previously unrecognized lineages were discovered, based on morphological traits, among the extremely speciose genera Psammodes Kirby, 1819 (164 species and subspecies) and Ocnodes Fåhraeus, 1870 (144 species and subspecies), namely the Psammodes spinosus species-group and Ocnodes humeralis species-group. In order to test their phylogenetic placement, a phylogeny of the tribe was reconstructed based on analyses of DNA sequences from six nonoverlapping genetic loci (CAD, wg, COI JP, COI BC, COII, and 28S) using Bayesian and maximum likelihood inference methods. The aforementioned, morphologically defined, species-groups were recovered as distinct and well-supported lineages within Molurina + Phanerotomeina and are interpreted as independent genera, respectively, Tibiocnodes Gearner & Kamiński gen. nov. and Tuberocnodes Gearner & Kamiński gen. nov. A new species, Tuberocnodes synhimboides Gearner & Kamiński sp. nov., is also described. Furthermore, as the recovered phylogenetic placement of Tibiocnodes and Tuberocnodes undermines the monophyly of Molurina and Phanerotomeina, an analysis of the available diagnostic characters for those subtribes is also performed. As a consequence, Phanerotomeina is considered as a synonym of the newly redefined Molurina sens. nov. Finally, spectrograms of vibrations produced by substrate tapping of two Molurina species, Toktokkus vialis (Burchell, 1822) and T. synhimboides, are presented.

Phylogenetic placement and new data on macro and micro morphology of Nopalxochia phyllanthoides (Cactaceae), an endangered species from Mexico

Phytotaxa ◽  
2015 ◽  
Vol 222 (4) ◽  
pp. 241 ◽  
Author(s):  
César Martínez-González ◽  
Othón Alcántara ◽  
Isolda Luna-Vega ◽  
Ricardo Garcia-Sandoval
Keyword(s):  
Endangered Species ◽  
Dna Sequences ◽  
Previous Treatment ◽  
Phylogenetic Placement ◽  
Reproductive Structures ◽  
Micro Morphology

The phylogenetic placement of Nopalxochia phyllanthoides using DNA sequences of two plastid regions is investigated. New data on the micro- and macro-morphology are also presented. Detailed descriptions of habit, vegetative and reproductive structures, as well as micro-morphology of areoles, epidermic cells of the apical and medium part of the spines, stomata, pollen and seeds, are provided. The results obtained show the N. phyllanthoides is to be recognized as independent taxon, so correcting the previous treatment a taxon belonging to the genus Disocactus. A lectotype and epitype are designated for this species.

Paris variabilis (Melanthiaceae), a new species from southwestern China

Phytotaxa ◽  
2019 ◽  
Vol 401 (3) ◽  
pp. 190
Author(s):  
ZHENYAN YANG ◽  
CHENGJIN YANG ◽  
YUNHENG JI
Keyword(s):  
New Species ◽  
Dna Sequences ◽  
Phylogenetic Analyses ◽  
Southwestern China ◽  
New Taxon ◽  
Phylogenetic Placement ◽  
Greenish Yellow ◽  
The Status ◽  
Its Dna Sequences ◽  
A New Species

Paris variabilis, a new species from the Wumengshan Mountains, southwestern China, is described and illustrated. The new species is placed in Paris section Euthyra. The new taxon was determined to be most morphologically similar to P. vietnamensis but differs in its oblong leaf blades with an acute apex, stamens 2–4 × petal number, greenish yellow filaments and an enlarged, purplish red style base. The phylogenetic placement of this species was assessed based on nuclear ribosomal ITS DNA sequences data. The results of morphological and phylogenetic analyses support the status of the taxon as a new species.

scholarly journals A Molecular Phylogeny of the Dove Genus Zenaida: Mitochondrial and Nuclear DNA Sequences

The Condor ◽  
2000 ◽  
Vol 102 (4) ◽  
pp. 864-870 ◽  
Author(s):  
Kevin P. Johnson ◽  
Dale H. Clayton
Keyword(s):  
Molecular Phylogeny ◽  
Cytochrome B ◽  
Dna Sequences ◽  
Nuclear Dna ◽  
Bootstrap Support ◽  
Zenaida Asiatica ◽  
Species Status ◽  
Combined Analysis ◽  
Significant Conflict

AbstractWe reconstructed a phylogeny for the seven species of doves in the genus Zenaida on the basis of a combined analysis of mitochondrial (ND2 and cytochrome b) and nuclear (fibrinogen intron 7) DNA sequences. This phylogeny, which is completely resolved, is well supported with all nodes showing greater than 50% bootstrap support. There was no significant conflict between trees based on each gene independently, although trees produced from fibrinogen intron 7 did not resolve relationships among five of the Zenaida species. The species status of Z. graysoni, as well as that of Z. meloda, is suggested based on their divergence from sister taxa (about 1% and 4%, respectively) and other differences. Zenaida can be divided into two major groups: Zenaida asiatica and Z. meloda versus Z. aurita, Z. galapagoensis, Z. auriculata, Z. graysoni, and Z. macroura.

Phylogenetic placement of Diplocystis wrightii in the Sclerodermatineae (Boletales) based on nuclear ribosomal large subunit DNA sequences

Mycoscience ◽  
2007 ◽  
Vol 48 (1) ◽  
pp. 66-69 ◽  
Author(s):  
Rebecca Louzan ◽  
Andrew W. Wilson ◽  
Manfred Binder ◽  
David S. Hibbett
Keyword(s):  
Dna Sequences ◽  
Large Subunit ◽  
Phylogenetic Placement

Phylogenetic placement of the enigmatic genus Holocheila (Lamiaceae) inferred from plastid DNA sequences

Taxon ◽  
2014 ◽  
Vol 63 (2) ◽  
pp. 355-366 ◽  
Author(s):  
Ya-Ping Chen ◽  
Bo Li ◽  
Richard G. Olmstead ◽  
Philip D. Cantino ◽  
En-De Liu ◽  
...  
Keyword(s):  
Dna Sequences ◽  
Plastid Dna ◽  
Phylogenetic Placement

scholarly journals Support for an expanded family concept of Malvaceae within a recircumscribed order Malvales: a combined analysis of plastid atpB and rbcL DNA sequences

1999 ◽  
Vol 129 (4) ◽  
pp. 267-303 ◽  
Author(s):  
CLEMENS BAYER ◽  
MICHAEL F. FAY ◽  
ANETTE Y. BRUIJN ◽  
VINCENT SAVOLAINEN ◽  
CYNTHIA M. MORTON ◽  
...  
Keyword(s):  
Dna Sequences ◽  
Combined Analysis

scholarly journals Historical biogeography of the leopard (Panthera pardus) and its extinct Eurasian populations

2018 ◽  
Author(s):  
Johanna L.A. Paijmans ◽  
Axel Barlow ◽  
Daniel W. Förster ◽  
Kirstin Henneberger ◽  
Matthias Meyer ◽  
...  
Keyword(s):  
Late Pleistocene ◽  
Dna Sequences ◽  
Sister Group ◽  
Historical Biogeography ◽  
Early Pleistocene ◽  
Middle Pleistocene ◽  
Recent Common Ancestor ◽  
Panthera Pardus ◽  
Phylogenetic Placement ◽  
Out Of Africa

AbstractBackgroundResolving the historical biogeography of the leopard(Panthera pardus)is a complex issue, because patterns inferred from fossils and from molecular data lack congruence. Fossil evidence supports an African origin, and suggests that leopards were already present in Eurasia during the Early Pleistocene. Analysis of DNA sequences however, suggests a more recent, Middle Pleistocene shared ancestry of Asian and African leopards. These contrasting patterns led researchers to propose a two-stage hypothesis of leopard dispersal out of Africa: an initial Early Pleistocene colonisation of Asia and a subsequent replacement by a second colonisation wave during the Middle Pleistocene. The status of Late Pleistocene European leopards within this scenario is unclear: were these populations remnants of the first dispersal, or do the last surviving European leopards share more recent ancestry with their African counterparts?ResultsIn this study, we generate and analyse mitogenome sequences from historical samples that span the entire modern leopard distribution, as well as from Late Pleistocene remains. We find a deep bifurcation between African and Eurasian mitochondrial lineages (∼710 Ka), with the European ancient samples as sister to all Asian lineages (∼483 Ka). The modern and historical mainland Asian lineages share a relatively recent common ancestor (∼122 Ka), and we find one Javan sample nested within these.ConclusionsThe phylogenetic placement of the ancient European leopard as sister group to Asian leopards suggests that these populations originate from the same out-of-Africa dispersal which founded the Asian lineages. The coalescence time found for the mitochondrial lineages aligns well with the earliest undisputed fossils in Eurasia, and thus encourages a re-evaluation of the identification of the much older putative leopard fossils from the region. The relatively recent ancestry of all mainland Asian leopard lineages suggests that these populations underwent a severe population bottleneck during the Pleistocene. Finally, although only based on a single sample, the unexpected phylogenetic placement of the Javan leopard could be interpreted as evidence for exchange of mitochondrial lineages between Java and mainland Asia, calling for further investigation into the evolutionary history of this subspecies.

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