Molecular evidence supports the recognition ofEpitrix papaas a distinct species fromEpitrix similaris

EPPO Bulletin ◽  
2016 ◽  
Vol 46 (3) ◽  
pp. 583-587 ◽  
Author(s):  
R. Mouttet ◽  
J.-C. Streito ◽  
G. Genson ◽  
J.-F. Germain
Keyword(s):  
Distinct Species ◽  
Molecular Evidence

Morphological and molecular evidence places Maronina into synonymy with Protoparmelia (Ascomycota: Lecanorales)

2011 ◽  
Vol 43 (6) ◽  
pp. 561-567 ◽  
Author(s):  
K. PAPONG ◽  
G. KANTVILAS ◽  
H. T. LUMBSCH
Keyword(s):  
Dna Sequence ◽  
Sequence Data ◽  
Distinct Species ◽  
Genetic Distances ◽  
Molecular Evidence ◽  
New Combinations ◽  
Secondary Chemistry ◽  
Phenotypic Characters ◽  
Dna Sequence Data ◽  
Phylogenetic Placement

AbstractThe phylogenetic placement of the genus Maronina was studied, based chiefly on phenotypic characters such as thallus colour and anatomy, secondary chemistry, the anatomy of the excipulum and the ascus-type. DNA sequence data of mitochondrial and nuclear ribosomal loci from some of the species support the hypothesis that Maronina is nested within Protoparmelia. Hence, Maronina is reduced to synonymy with Protoparmelia. Comparison of genetic distances suggests that the two varieties within M. orientalis should be regarded as distinct species. Consequently, the new combinations Protoparmelia australiensis (Hafellner & R. W. Rogers) Kantvilas et al., P. corallifera (Kantvilas & Papong) Kantvilas et al., P. hesperia (Kantvilas & Elix) Kantvilas et al., P. multifera (Nyl.) Kantvilas et al., and P. orientalis (Kantvilas & Papong) Kantvilas et al. are proposed.

DNA barcodes provide evidence for the independent origin of the cultivated silkworms Samia ricini and Samia cynthia

2021 ◽  
pp. 1-8
Author(s):  
J.-C. Huang ◽  
X.-Y. Li ◽  
Y.-P. Li ◽  
R.-S. Zhang ◽  
D.-B. Chen ◽  
...  
Keyword(s):  
Genetic Distance ◽  
Phylogenetic Relationship ◽  
Dna Barcode ◽  
Distinct Species ◽  
Coi Gene ◽  
Molecular Evidence ◽  
Dna Barcodes ◽  
Close Relationship ◽  
Molecular Phylogenetic ◽  
Phylogenetic Framework

Samia ricini (Wm. Jones) and Samia cynthia (Drury) (Lepidoptera: Saturniidae) have been used as traditional sources of food as well as silk-producing insects. However, the phylogenetic relationship between the two silkworms remains to be addressed. In this study, the mitochondrial cytochrome c oxidase subunit 1 (COI) gene sequences corresponding to DNA barcodes from 13 Samia species were analysed, and a DNA barcode-based phylogenetic framework for these Samia species was provided. Phylogenetic analysis showed that multiple individuals of a species could be clustered together. Our analysis revealed a close relationship among Samia yayukae Paukstadt, Peigler and Paukstadt, Samia abrerai Naumann and Peigler, Samia kohlli Naumann and Peigler, Samia naessigi Naumann and Peigler, Samia naumanni Paukstadt, Peigler and Paukstadt, and Samia kalimantanensis Paukstadt and Paukstadt. The mixed clustering relationship and low Kimura-2-parameter (K2P) genetic distance (0.006) between individuals of S. ricini and Samia canningi (Hutton) indicated that the cultivated silkworm S. ricini was derived from the non-cultivated silkworm S. canningi. The remote phylogenetic relationship and high K2P genetic distance (0.039) indicated that S. ricini and S. cynthia are distinct species, thus providing solid molecular evidence that they had entirely independent origins. The relationships between S. kalimantanensis and S. naumanni and between S. cynthia and Samia wangi Naumann and Peigler, as well as the potential cryptic species within S. abrerai were also discussed. This is the first study to assess the DNA barcodes of the genus Samia, which supplements the knowledge of species identification and provides the first molecular phylogenetic framework for Samia species.

Molecular evidence supports Phytophthora quercina as a distinct species

1999 ◽  
Vol 103 (7) ◽  
pp. 799-804 ◽  
Author(s):  
David E.L. Cooke ◽  
Thomas Jung ◽  
Naomi A. Williams ◽  
Roland Schubert ◽  
Günther Bahnweg ◽  
...  
Keyword(s):  
Distinct Species ◽  
Molecular Evidence

Pupilla pratensis (Gastropoda: Pupillidae) in the Czech Republic and Slovakia and its distinction from P. muscorum and P. alpicola based on multidimensional analysis of shell measurements

Biologia ◽  
2010 ◽  
Vol 65 (6) ◽  
Author(s):  
Michal Horsák ◽  
Jana Škodová ◽  
Jan Myšák ◽  
Tomáš Čejka ◽  
Vojen Ložek ◽  
...  
Keyword(s):  
Czech Republic ◽  
Distinct Species ◽  
Multidimensional Analysis ◽  
Molecular Evidence ◽  
The Czech Republic ◽  
Central European ◽  
Measurement Variation ◽  
Fossil Material ◽  
Site Characteristics ◽  
Components Analysis

AbstractPupilla pratensis (Clessin, 1871) was recently confirmed as a distinct species based on morphological, ecological and molecular evidence. The main purpose of this study is to publish the first reliable data on the occurrence of P. pratensis in the Czech Republic and Slovakia. The second goal is to analyse conchometry of P. pratensis, P. muscorum (L., 1758), and P. alpicola (Charpentier, 1837) to find out whether it is possible to reliably distinguish these species solely based on shell measurements. For multidimensional analysis of shell measurement variation we used principal components analysis (PCA). We documented six populations of P. pratensis in the Czech Republic and one in SW Slovakia. The revision of voucher material showed that all previously reported records of P. alpicola from the Czech Republic belonged in fact to P. pratensis. This requires the exclusion of P. alpicola from the list of Czech molluscs. Based on multidimensional analysis of shell measurements it was possible to distinguish P. pratensis from P. muscorum with no overlapping specimens. Pupilla alpicola was almost completely different from P. muscorum with only few overlapping specimens, contrary to P. pratensis which was mostly impossible to distinguish from P. alpicola based on analysed shell measurements. Shell width was the best single shell measurement for distinguishing P. pratensis and P. muscorum. Shell measurements of two Swedish populations of P. pratensis did not differ from shell variation of Czech and Slovak populations. However, Scandinavian populations displayed some differences from central European populations in apertural barriers which are discussed in detail. Czech and Slovak populations of P. pratensis occurred in calcium-rich fen meadows which perfectly matches with site characteristics reported from Scandinavia. We assume that the observed morphometric differences between P. pratensis and P. muscorum can be useful for distinguishing the species also outside the Czech territory and for palaeoecological studies where only empty shells are available. Since these species occupy ecologically different habitats their reliable identification in fossil material can improve the reconstructions of past environments.

scholarly journals Genetic and morphological studies ofTrichosirocalusspecies introduced to North America, Australia and New Zealand for the biological control of thistles

2015 ◽  
Vol 106 (1) ◽  
pp. 99-113 ◽  
Author(s):  
A. De Biase ◽  
E. Colonnelli ◽  
S. Belvedere ◽  
A. La Marca ◽  
M. Cristofaro ◽  
...  
Keyword(s):  
Biological Control ◽  
New Zealand ◽  
Host Plants ◽  
Biological Control Agent ◽  
Molecular Genetic ◽  
Elongation Factor ◽  
Single Species ◽  
Distinct Species ◽  
Molecular Evidence ◽  
Morphological Studies

AbstractTrichosirocalus horridussensu lato has been used as a biological control agent of several invasive thistles (Carduusspp.,Cirsiumspp. andOnopordumspp.) since 1974. It has been recognized as a single species until 2002, when it was split into three species based on morphological characters:T. horridus, Trichosirocalus brieseiandTrichosirocalus mortadelo, each purported to have different host plants. Because of this taxonomic change, uncertainty exists as to which species were released in various countries; furthermore, there appears to be some exceptions to the purported host plants of some of these species. To resolve these questions, we conducted an integrative taxonomic study of theT. horridusspecies complex using molecular genetic and morphological analyses of specimens from three continents. Both mitochondrial cytochrome c oxidase subunit I and nuclear elongation factor 1α markers clearly indicate that there are only two distinct species,T. horridusandT. briesei. Molecular evidence, morphological analysis and host plant associations support the synonymy ofT. horridus(Panzer, 1801) andT. mortadeloAlonso-Zarazaga & Sánchez-Ruiz, 2002. We determine thatT. horridushas been established in Canada, USA, New Zealand and Australia and thatT. brieseiis established in Australia. The former species was collected fromCarduus, CirsiumandOnopordumspp. in the field, whereas the latter appears to be specific toOnopordum.

scholarly journals The Tenasserim Lutung, Trachypithecus barbei (Blyth, 1847) (Primates: Cercopithecidae): Description of a live specimen, and a reassessment of phylogenetic affinities, taxonomic history, and distribution

2004 ◽  
Vol 73 (4) ◽  
pp. 271-282 ◽  
Author(s):  
Thomas Geissmann ◽  
Colin P. Groves ◽  
Christian Roos
Keyword(s):  
Distinct Species ◽  
Molecular Evidence ◽  
Museum Specimens ◽  
Field Observations ◽  
Distribution Map ◽  
Taxonomic History ◽  
History Of ◽  
Live Specimen ◽  
Phylogenetic Affinities

The Tenasserim lutung Trachypithecus barbei was previously known from museum specimens and field observations only. We discovered a zoo specimen and present the first confirmed evidence for the continued existence of the species since 1967. We describe the cranial pelage and coloration characteristics of this species which were previously unknown. We present first molecular evidence for recognizing T. barbei as a distinct species and for assessing its phylogenetic affinities relative to other members of the genus Trachypithecus. We document the taxonomic history of T. barbei and present a distribution map based on a compilation of all known locality records.

scholarly journals Huperzia nanlingensis (Lycopodiaceae), a new terrestrial firmoss from southern China

Phytotaxa ◽  
2014 ◽  
Vol 173 (1) ◽  
pp. 73 ◽  
Author(s):  
Nawal Shrestha ◽  
Fu-Wu Xing ◽  
Xin-Ping Qi ◽  
Yue-Hong Yan ◽  
Xian-Chun Zhang
Keyword(s):  
Southern China ◽  
Conservation Status ◽  
Leaf Shape ◽  
Distinct Species ◽  
Molecular Evidence ◽  
Leaf Margin ◽  
Purple Coloration ◽  
Morphological Differences ◽  
Seasonal Index ◽  
A New Species

Huperzia nanlingensis sp. nov. (Lycopodiaceae) is described as a new species from southern China. The distinguishing characters, description, ecology, conservation status, detailed illustrations and photographs are provided. The species resembles H. serrata in leaf shape and serrations on the margin of leaves. However, it is clearly separated as a distinct species on the basis of quantitative morphology, anatomy, and molecular evidence. Although the observed morphological differences between these two species are superficially subtle, H. nanlingensis can be distinguished from H. serrata by purple coloration at the tip and base of leaves, higher number of teeth on one side of the tropophyll, higher seasonal index and slightly crispate leaf margin.

The identity of Aplocheilus andamanicus (Köhler, 1906) (Teleostei: Cyprinodontiformes), an endemic Killifish from the Andaman Islands, with notes on Odontopsis armata van Hasselt

Zootaxa ◽  
2018 ◽  
Vol 4382 (1) ◽  
pp. 159
Author(s):  
UNMESH KATWATE ◽  
PRADEEP KUMKAR ◽  
RALF BRITZ ◽  
RAJEEV RAGHAVAN ◽  
NEELESH DAHANUKAR
Keyword(s):  
Distinct Group ◽  
Distinct Species ◽  
Valid Species ◽  
Eastern Coast ◽  
Molecular Evidence ◽  
Andaman Islands ◽  
Fin Ray ◽  
The Ganges ◽  
To Receive ◽  
Two Populations

In his work on the fishes of the Andaman Islands, Francis Day (1870) collected large-sized specimens of Aplocheilus from the south Andamans. Despite differences in the size and dorsal-fin ray counts, Day refrained from recognising the Andaman Aplocheilus as a distinct species and considered it as Aplocheilus panchax, a species distributed in the Ganges delta and across the eastern coast of mainland India. However, Day mentioned the differences in fin-ray counts between these two populations. Subsequently Köhler (1906) described the Andaman population as Haplochilus andamanicus (now in Aplocheilus), referring to the diagnostic characters initially discovered by Day. This species failed to receive recognition from taxonomists, because of the uncertainty regarding the validity of the species and its questionable synonymy with A. panchax. In this study, based on morphological and molecular evidence, we demonstrate that A. andamanicus is indeed a distinct and valid species, which can easily be diagnosed from the widespread A. panchax. While resolving the identity of A. andamanicus, we also demonstrate that the congeners from southeast Asia form a genetically distinct group for which the name Odontopsis armata is available. 

A new species of Cephalocereus (Cactaceae) from southern Mexico

Phytotaxa ◽  
2019 ◽  
Vol 392 (2) ◽  
pp. 147
Author(s):  
SALVADOR ARIAS ◽  
HÉCTOR J. TAPIA ◽  
ULISES GUZMÁN
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
Distinct Species ◽  
Sister Species ◽  
Molecular Evidence ◽  
Southern Mexico ◽  
Cpdna Markers ◽  
A New Species

Cephalocereus parvispinussp. nov. (Cactaceae) from the Mixtecan region (Oaxaca state, Mexico) is described and illustrated. The morphological and molecular evidence support its recognition as a distinct species within the genus Cephalocereus. The new species is characterized by arborescent habit up to 8 m in height, acrotonic branching, stems with 15−23 ribs; flowers 3.5−4 cm long, pericarpel and receptacular tube without podaria nor spines; fruit 1.7−2.2 cm long, dark red, with white flesh; seeds ca. 1.4 ×0.6 mm, dark brown, with a rugose micro-relief. The phylogenetic analysis usingseven cpDNA markers,shows that C. parvispinusis the sister species of C. polylophusand C. euphorbioides.

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