THE TAXONOMIC STATUS OF DIGRAMMA (PSEUDOPHYLLIDEA: LIGULIDAE) INFERRED FROM DNA SEQUENCES

2003 ◽  
Vol 89 (4) ◽  
pp. 792-799 ◽  
Author(s):  
Jingjing Li ◽  
Xianghua Liao
Keyword(s):  
Dna Sequences ◽  
Taxonomic Status

Species relationships in the dasyurid marsupial genus Pseudantechinus (Marsupialia : Dasyuridae): a re-examination of the taxonomic status of Pseudantechinus roryi

2017 ◽  
Vol 65 (4) ◽  
pp. 240 ◽  
Author(s):  
L. S. Umbrello ◽  
P. A. Woolley ◽  
M. Westerman
Keyword(s):  
Dna Sequences ◽  
Isolation By Distance ◽  
Phylogenetic Analyses ◽  
Mitochondrial Gene ◽  
Taxonomic Status ◽  
Museum Collections ◽  
Species Relationships ◽  
Type Specimens ◽  
Network Analyses ◽  
The Status

The status of Pseudantechinus roryi relative to its congeners has been determined from DNA sequences obtained from both nuclear and mitochondrial gene loci. Although all other recognised species of Pseudantechinus form reciprocally monophyletic lineages in phylogenetic analyses, individuals identified in museum collections as Ps. roryi (including type specimens) were indistinguishable from those identified as Ps. macdonnellensis. Ps. roryi is thus considered to be a synonym of Ps. macdonnellensis. Neighbour-joining network analyses failed to reveal any clear biogeographic differences between populations of Ps. macdonnellensis other than some evidence of isolation by distance.

Aspergillus affinis sp. nov., a novel ochratoxin A-producing Aspergillus species (section Circumdati) isolated from decomposing leaves

2012 ◽  
Vol 62 (Pt_4) ◽  
pp. 1007-1015 ◽  
Author(s):  
Domenico Davolos ◽  
Anna Maria Persiani ◽  
Biancamaria Pietrangeli ◽  
Alessandra Ricelli ◽  
Oriana Maggi
Keyword(s):  
Ochratoxin A ◽  
Dna Sequences ◽  
Sequence Data ◽  
Taxonomic Status ◽  
Internal Transcribed Spacers ◽  
Chain Gene ◽  
Protein Coding ◽  
5.8S Rdna ◽  
Rdna Gene ◽  
Molecular Phylogenetic

Two ochratoxin A (OTA)-producing Aspergillus isolates, recently collected from submerged riparian decomposing leaves in Italy, were found to have a similar morphology to Aspergillus cretensis (subgenus Circumdati, section Circumdati). However, marked differences emerged between these two novel isolates and A. cretensis as the former displayed different colony features and had larger vesicles, metulae, phialides and conidia, as well as a distinct sclerotial form and size. In order to determine the taxonomic status and to infer the evolutionary relationships of these two morphologically identical isolates, a molecular phylogenetic analysis was performed on all the officially recognized lineages in the section Circumdati. The DNA sequences and the deduced amino acid residues from the nuclear loci were analysed. Both rRNA and protein coding genes were assessed, which are widely used to differentiate taxa belonging to genus Aspergillus at various evolutionary levels. The 5.8S rDNA gene and internal transcribed spacers (ITS), the D1/D2 domains of the 28S rDNA gene, a region of the tubulin beta chain gene (benA) and part of the calmodulin gene (cmd) were amplified by PCR and then sequenced. The analysis of the rRNA regions and of the benA and cmd sequence data indicated that the two isogenic isolates belonged to a genetically distinct OTA-producing species of the genus Aspergillus. The isolates are proposed as representing a novel species, Aspergillus affinis sp. nov., with the type strain ATCC MYA-4773T ( = CBS 129190 = 417). Phylogenetically, A. affinis sp. nov. appeared to be very closely related to A. cretensis, from which it could be distinguished by means of a morphological trait analysis.

scholarly journals Origin of the eastern brownsnake, Pseudonaja textilis (Dumeril, Bibron and Dumeril) (Serpentes: Elapidae: Hydrophiinae) in New Guinea: evidence of multiple dispersals from Australia, and comments on the status of Pseudonaja textilis pughi Hoser 2003

Zootaxa ◽  
2008 ◽  
Vol 1703 (1) ◽  
pp. 47 ◽  
Author(s):  
DAVID J. WILLIAMS ◽  
MARK O'SHEA ◽  
ROLAND L. DAGUERRE ◽  
CATHARINE E. POOK ◽  
WOLFGANG WÜSTER ◽  
...  
Keyword(s):  
Dna Sequences ◽  
Taxonomic Status ◽  
New Guinea ◽  
Physical Geography ◽  
Sea Level Changes ◽  
Migration Routes ◽  
Arnhem Land ◽  
The Status ◽  
The Subject ◽  
Western Migration

Pseudonaja textilis is a widespread and common snake in eastern parts of Australia, but its distribution in New Guinea is poorly understood, and the origin of the New Guinea populations and its timing have been the subject of much speculation. Phylogenetic analysis of mitochondrial DNA sequences from three New Guinea populations of P. textilis indicates that New Guinea was colonised from two independent eastern and western migration routes most likely in the Pleistocene. One dispersal event from northern Queensland led to the populations in eastern New Guinea (Milne Bay, Oro and Central Provinces, Papua New Guinea), whereas another, from Arnhem Land to central southern New Guinea, led to the populations from the Merauke area, Indonesian Papua. The results are consistent with the effects of Pleistocene sea level changes on the physical geography of Australasia, and are thus suggestive of a natural rather than anthropogenic origin of the New Guinea populations. The taxonomic status of the New Guinean populations is discussed.

A molecular phylogeny of the “Madascincus polleni species complex”, with description of a new species of scincid lizard from the coastal dune area of northern Madagascar

Zootaxa ◽  
2011 ◽  
Vol 2876 (1) ◽  
pp. 1 ◽  
Author(s):  
AURÉLIEN MIRALLES ◽  
JÖRN KÖHLER ◽  
FRANK GLAW ◽  
MIGUEL VENCES
Keyword(s):  
Dna Sequences ◽  
Species Complex ◽  
Nuclear Dna ◽  
Taxonomic Status ◽  
Nominal Species ◽  
Morphological Examination ◽  
Closely Related Species ◽  
A New Species ◽  
Evolutionary Lineages ◽  
Dune Area

The present paper constitutes a study on a taxonomically confusing group of closely related species belonging to the Malagasy skink genus Madascincus, currently encompassing the nominal species M. polleni, M. intermedius and M. stumpffi. Based on combined analyses of mitochondrial and nuclear DNA sequences (ND1 and RAG2 genes, respectively), and morphological examination, we provide evidence for the existence of at least four distinct evolutionary lineages within this complex: Madascincus stumpffi; Madascincus arenicola sp. nov. from northern Madagascar; and two cryptic species morphologically similar to the name-bearing types of M. polleni and M. intermedius. The two latter species, although genetically distinct, appear to be morphologically indistinguishable and their taxonomic status cannot be resolved until a better sampling will be available.

Molecular phylogeny of the Fusarium solani species complex (FSSC) isolated from soils in Iran

Botany ◽  
2014 ◽  
Vol 92 (11) ◽  
pp. 815-820 ◽  
Author(s):  
Khosrow Chehri
Keyword(s):  
Dna Sequences ◽  
Fusarium Solani ◽  
Species Complex ◽  
Agricultural Soils ◽  
Sequence Data ◽  
Morphological Characteristics ◽  
Taxonomic Status ◽  
Its Region ◽  
Phylogenetic Study ◽  
Fusarium Solani Species Complex

Members of Fusarium solani species complex (FSSC) are frequently isolated from soils, food, feeds, trees, and to some extent from humans and other animals. The taxonomic status of these fungi is being revised but no attempt has been made to identify those isolated in Iran, a mountainous country with a high biodiversity. The objective of the present research was to study the phylogenetic diversity of FSSC strains recovered from soils in Iran by analyzing morphological characteristics and DNA sequences. A total of 65 strains belonging to the FSSC were recovered from agricultural soils in western Iran. Based on differences in their morphological characters, 25 strains were selected for phylogenetic analysis employing translation elongation factor-1α (tef1) and internal transcribed spacer (ITS) region sequences. Comparisons of DNA sequence data revealed that all isolates belonged to Fusarium falciforme, Fusarium keratoplasticum, Fusarium petroliphilum, the unnamed species FSSC 5, and unknown species of Fusarium, which represents a new lineage within members of Clade 3. Based on morphological features and phylogenetic study, F. keratoplasticum and F. petroliphilum were reported for the first time in Iran.

scholarly journals Taxonomy ofCladonia angustilobaand related species

2018 ◽  
Vol 50 (3) ◽  
pp. 267-282 ◽  
Author(s):  
Raquel PINO-BODAS ◽  
Ana Rosa BURGAZ ◽  
Teuvo AHTI ◽  
Soili STENROOS
Keyword(s):  
Dna Sequences ◽  
Species Delimitation ◽  
Bayes Factor ◽  
Taxonomic Status ◽  
Distribution Data ◽  
Size And Morphology ◽  
Unique Species ◽  
Current Species ◽  
World Distribution ◽  
Evolutionary Lineages

AbstractThe lichen speciesCladonia angustilobais characterized by a well-developed primary thallus and narrow squamules which show deep incisions, and the presence of usnic and fumarprotocetraric acids. Morphologically it is similar toC. foliaceaandC. convoluta, from which it can be distiguished by the squamule size and morphology. Since similar characters were used to distinguishC. foliaceafromC. convolutawhich do not represent different lineages, it is necessary to examine the taxonomic status ofC. angustilobaby means of DNA sequences. In this study, the species delimitation within theC. foliaceacomplex was studied by sequencing three loci, ITS rDNA,cox1andRPB2. The data were analyzed by means of phylogenetic and species delimitation methods (GMYC, PTP, ABGD and BPP). Our results show that none of the three species is monophyletic. Most of the species delimitation methods did not support the current species as evolutionary lineages. Only some of the BPP analyses supportedC. angustilobaas a species distinct fromC. foliaceaandC. convoluta. However, the hypothesis that considers theC. foliaceacomplex as constituted by a unique species obtained the best Bayes Factor value. Therefore,C. angustilobaandC. convolutaare synonymized withC. foliacea.A new, thoroughly checked synonymy with typifications of the wholeC. foliaceacomplex is presented. An updated survey of the world distribution data is compiled.

Phylogeny of Subtribe Aeridinae (Orchidaceae) Inferred from DNA Sequences Data : Advanced Analyses Including Australasian Genera

2012 ◽  
Vol 59 (1) ◽  
Author(s):  
Topik Hidayat ◽  
Peter H. Weston ◽  
Tomohisa Yukawa ◽  
Motomi Ito ◽  
Rod Rice
Keyword(s):  
Dna Sequences ◽  
Phylogenetic Analyses ◽  
Taxonomic Status ◽  
Its Region ◽  
Classification Systems ◽  
Genus Level ◽  
Preliminary Work ◽  
Secondary Center ◽  
Generic Position ◽  
Australasian Region

Advanced phylogenetic analyses of the orchid subtribe Aeridinae has been conducted using DNA sequences of ITS region of nrDNA andmatK of cpDNA. In the preliminary work, we only involved the most representative Asian genera of the subtribe. Further, to establish more robust relationships in the Aeridinae, in this study we have extended the sampling to include Australasian specimens. Our analyses revealed that: (1) the subtribe is reorganised by four major groups with 11 subgroups (This is inconsistent with previous classification systems of the subtribe); (2) the Australasian region is a secondary center of diversification of the subtribe; (3) vegetative features have shown to have greater value than reproductive one in determining major groups in the subtribe; and (4) at genus level, some genera, i.e. Phalaenopsis,Cleisostoma, Sarcochilus, and Aerides are shown to be non-monophyletic. This study also resolved the taxonomic status ofAerides flabellata Rolve ex Downie, a species with a debatable generic position.

Description of a new genus and two new species of killifish (Cyprinodontiformes: Nothobranchiidae) from West Africa, with a discussion of the taxonomic status of Aphyosemion maeseni Poll, 1941

Zootaxa ◽  
2009 ◽  
Vol 2294 (1) ◽  
pp. 1-22 ◽  
Author(s):  
RAINER SONNENBERG ◽  
ECKHARD BUSCH
Keyword(s):  
New Species ◽  
Dna Sequences ◽  
New Genus ◽  
Nuclear Dna ◽  
Taxonomic Status ◽  
Morphological Characters ◽  
Color Pattern ◽  
Monophyletic Group ◽  
Morphological Data ◽  
Adult Males

The phylogeny of the West African genus Archiaphyosemion was studied with mitochondrial and nuclear DNA sequences. The results of the combined dataset presented here did not support a monophyletic group. After the exclusion of the type species of the genus, A. guineense, the remaining species form a well-supported monophyletic group. Based on these molecular results and supported by morphological data, we suggest a new name for this group, Nimbapanchax, new genus. Additionally, based on a recent collection in Guinea, two new Nimbapanchax species were described. The taxon Nimbapanchax leucopterygius, new species, is described for a nothobranchiid fish formerly misidentified as Archiaphyosemion maeseni (Poll, 1941). Nimbapanchax melanopterygius, new species, is described from the Mount Nimba region in southeastern Guinea. Both new Nimbapanchax species are clearly distinguished from their congeners by the coloration pattern of adult males. The results of the DNA data support the assumption based on color pattern and morphological characters that the new described species are sister taxa. The type of Aphyosemion maeseni Poll, 1941 was reexamined and transferred to the genus Epiplatys, a decision based on diagnostic morphological characters.

scholarly journals TAXONOMIC STATUS OFPEROMYSCUS BOYLII SACARENSIS: INFERENCES FROM DNA SEQUENCES OF THE MITOCHONDRIAL CYTOCHROME-BGENE

2000 ◽  
Vol 81 (3) ◽  
pp. 875-884 ◽  
Author(s):  
Robert D. Bradley ◽  
Irene Tiemann-Boege ◽  
C. William Kilpatrick ◽  
David J. Schmidly
Keyword(s):  
Dna Sequences ◽  
Taxonomic Status ◽  
Mitochondrial Cytochrome

Taxonomic status and genetic differentiation of Hyrcanian Castanea based on noncoding chloroplast DNA sequences data

2014 ◽  
Vol 10 (6) ◽  
pp. 1611-1629 ◽  
Author(s):  
Hamed Yousefzadeh ◽  
Abasalt Hosseinzadeh Colagar ◽  
Fatemeh Akbarzadeh ◽  
Nicholas P. Tippery
Keyword(s):  
Genetic Differentiation ◽  
Chloroplast Dna ◽  
Dna Sequences ◽  
Taxonomic Status ◽  
Chloroplast Dna Sequences
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