Molecular phylogeny of the freshwater prawn genus Macrobrachium (Decapoda, Palaemonidae), with emphasis on the relationships among selected American species

2010 ◽  
Vol 24 (2) ◽  
pp. 194 ◽  
Author(s):  
Leonardo G. Pileggi ◽  
Fernando L. Mantelatto
Keyword(s):  
Phylogenetic Analysis ◽  
Larval Development ◽  
Dna Sequences ◽  
Type Species ◽  
Species Complex ◽  
Taxonomic Status ◽  
Freshwater Prawn ◽  
The Family ◽  
Different Types ◽  
History Of

The genus Macrobrachium Bate, 1868 is one of the best examples of widespread crustacean genera distributed globally throughout tropical and subtropical waters. Previous investigators have noted the systematic complexity of the group, and have suggested rearrangements within the family Palaemonidae. Our phylogenetic analysis of new mitochondrial DNA sequences of 58 species of Macrobrachium distributed mainly in America support the hypothesis of monophyly of this genus, if Cryphiops Dana, 1852 is accepted as a generic synonym. We concluded that the independent evolution of different types of life cycle (abbreviated larval development – ALD and extended larval development – ELD) must have occurred more than once in the history of the group. Similarly, we also concluded that the current type species of the genus, Macrobrachium americanum Bate, 1868, should not be considered valid, as previously proposed. The synonymy of two members of the ‘olfersi’ species complex (M. birai Lobão, Melo & Fernandes, 1986 and M. holthuisi Genofre & Lobão, 1978) with M. olfersi (Wiegmann, 1836) was confirmed. Similar results were found in comparing M. petronioi Melo, Lobão & Fernandes, 1986 and M. potiuna (Müller, 1880), in which the genetic divergence placed M. petronioi within the level of intraspecific variation of M. potiuna. The taxonomic status of the genus Cryphiops, as well as theories on the origin of Macrobrachium, is also called into question.

A new species of Cirrophorus (Annelida: Paraonidae) from Mediterranean organically enriched coastal environments, with taxonomic notes on the family

2017 ◽  
Vol 97 (5) ◽  
pp. 871-880 ◽  
Author(s):  
Joachim Langeneck ◽  
Michele Barbieri ◽  
Ferruccio Maltagliati ◽  
Alberto Castelli
Keyword(s):  
New Species ◽  
Type Species ◽  
Evolutionary History ◽  
Taxonomic Status ◽  
Genetic Data ◽  
Coastal Environments ◽  
Closely Related Species ◽  
The Family ◽  
History Of ◽  
A New Species

Cirrophorus nikebianchii sp. nov. is described from brackish-water and organically enriched marine environments of the Mediterranean Sea. The new species is characterized by a very small prostomial antenna and a high number of branchiae pairs. A phylogenetic analysis carried out through the use of three molecular markers (16S rRNA, 18S rRNA and COI) supports the distinction between C. nikebianchii and C. furcatus, a closely related species with which it has been misidentified. Preliminary results obtained show that the genera Cirrophorus and Paradoneis are not reciprocally monophyletic, with uncertain relationships with the remaining genera of Paraonidae. This outcome suggests that the evolutionary history of Paraonidae is less straightforward than previously supposed. Moreover, the uncertainty about the taxonomic status of Paraonides neapolitana, type species of the genus Paraonides, makes the revamping of the taxonomy of Paraonidae more challenging. Awaiting support from studies including more species, and based on morphological and genetic data as well, we suggest to provisionally maintain the current use of Cirrophorus and Paradoneis, and to assign to Paraonella the species traditionally assigned to Paraonides.

scholarly journals Taxonomic status of Bhanja and Kismayo viruses (family Bunyaviridae)

2012 ◽  
Vol 17 (4) ◽  
pp. 4-8
Author(s):  
A. S Klimentov ◽  
A. P Gmyl ◽  
A. M Butenko ◽  
L. V Gmyl ◽  
O. V Isaeva ◽  
...  
Keyword(s):  
Phylogenetic Analysis ◽  
Amino Acid ◽  
Nucleotide Sequence ◽  
Taxonomic Status ◽  
Amino Acid Sequences ◽  
The Family ◽  
L Segment

The nucleotide sequence of M= (1398 nucleotides and L= (6186 nucleotides) segments of the genome of Bhanja virus and L-segment (1297 nucleotides) of Kismayo virus has been partially determined. Phylogenetic analysis of deduced amino acid sequences showed that these viruses are novel members of the Flebovirus (Phlebovirus) genus in the family Bunyaviridae

scholarly journals Quid estClea helena?Evidence for a previously unrecognized radiation of assassin snails (Gastropoda: Buccinoidea: Nassariidae)

PeerJ ◽  
2017 ◽  
Vol 5 ◽  
pp. e3638 ◽  
Author(s):  
Ellen E. Strong ◽  
Lee Ann Galindo ◽  
Yuri I. Kantor
Keyword(s):  
Life History ◽  
Type Species ◽  
Species Complex ◽  
Aquarium Trade ◽  
Systematic Revision ◽  
Mitochondrial Coi ◽  
Phylogenetic Placement ◽  
Se Asia ◽  
The Family ◽  
The Us

The genusCleafrom SE Asia is from one of only two unrelated families among the megadiverse predatory marine Neogastropoda to have successfully conquered continental waters. While little is known about their anatomy, life history and ecology, interest has grown exponentially in recent years owing to their increasing popularity as aquarium pets. However, the systematic affinities of the genus and the validity of the included species have not been robustly explored. Differences in shell, operculum and radula characters support separation ofCleaas presently defined into two distinct genera:Clea, for the type speciesClea nigricansand its allies, andAnentomeforClea helenaand allies. A five-gene mitochondrial (COI, 16S, 12S) and nuclear (H3, 28S) gene dataset confirms the placement ofAnentomeas a somewhat isolated offshoot of the family Nassariidae and sister to the estuarineNassodonta. Anatomical data corroborate this grouping and, in conjunction with their phylogenetic placement, support their recognition as a new subfamily, the Anentominae. The assassin snailAnentome helena, a popular import through the aquarium trade so named for their voracious appetite for other snails, is found to comprise a complex of at least four species. None of these likely represents trueAnentome helenadescribed from Java, including a specimen purchased through the aquarium trade under this name in the US and one that was recently found introduced in Singapore, both of which were supported as conspecific with a species from Thailand. The introduction ofAnentome“helena” through the aquarium trade constitutes a significant threat to native aquatic snail faunas which are often already highly imperiled. Comprehensive systematic revision of this previously unrecognized species complex is urgently needed to facilitate communication and manage this emerging threat.

Acerihabitans arboris gen. nov., sp. nov., a new member of the family Pectobacteriaceae isolated from sap drawn from Acer pictum

2021 ◽  
Author(s):  
Soon Dong Lee ◽  
In Seop Kim ◽  
Hanna Choe ◽  
Ji-Sun Kim
Keyword(s):  
Type Species ◽  
Sequence Similarity ◽  
Taxonomic Status ◽  
Amino Acid Identity ◽  
Core Gene ◽  
Phylogenomic Analysis ◽  
Rrna Gene ◽  
Content Type ◽  
Link Type ◽  
The Family

A Gram-negative, facultatively anaerobic bacterium, designated SAP-6T, was isolated from sap extracted from Acer pictum in Mt. Halla in Jeju, Republic of Korea and its precise taxonomic status was determined by a polyphasic approach. Cells were non-sporulating, motile, short rods and showed growth at 4–37 °C, pH 6.0–8.0 and 0–4% NaCl. Phylogenomic analysis based on 92 core gene sequences showed that strain SAP-6T belonged to the family Pectobacteriaceae and formed a distinct clade between members of the genera Sodalis and Biostraticola with gene support index of 89. The closest phylogenetic neighbours were Biostraticola tofi DSM 19580T (97.3% 16S rRNA gene sequence similarity) and Sodalis praecaptivus HS1T (96.8%), with the average amino acid identity values of 75.3% and 74.0%, respectively. The major polar lipids were diphosphatidylglycerol, phosphatidylcholine, phosphatidylethanolamine, phosphatidylglycerol and an unidentified aminophospholipid. The major isoprenoid quinones were Q-7 and Q-8. The predominant fatty acids were C16:0, C17:0 cyclo and summed feature 3. The DNA G+C content was 57.0%. On the basis of data presented here, strain SAP-6T (=KCTC 52622T=DSM 104038T) represents a novel species of a new genus in the family Pectobacteriaceae , for which the name Acerihabitans arboris gen. nov., sp. nov. is proposed.

CONTRIBUTIONS TO THE KNOWLEDGE OF CAMBODIAN CYPERACEAE

2019 ◽  
Vol 76 (2) ◽  
pp. 197-220
Author(s):  
K. Tremetsberger ◽  
S. Hameister ◽  
D. A. Simpson ◽  
K.-G. Bernhardt
Keyword(s):  
Phylogenetic Analysis ◽  
Southeast Asia ◽  
Phylogenetic Tree ◽  
Internal Transcribed Spacer ◽  
Sequence Data ◽  
Its Sequences ◽  
Cryptic Variation ◽  
The Family ◽  
History Of ◽  
Rapid Radiations

To date, there are very few sequence data for Cyperaceae from mainland Southeast Asia. The aim of the present study was to contribute nuclear ribosomal internal transcribed spacer (ITS) sequences of selected species of Cambodian Cyperaceae to the overall phylogeny of the family. We generated ITS sequences of 38 accessions representing 26 species from Cambodia and used these sequences for phylogenetic analysis together with similar sequences from the National Center for Biotechnology Information GenBank. Our results corroborate recent phylogenetic work in the family and largely confirm established tribal relationships. The backbone of the phylogenetic tree of species-rich genera that have undergone rapid radiations is often weakly resolved (e.g. in Fimbristylis and in the C4 clade of Cyperus). Cryptic variation was revealed in the taxonomically difficult group of Fimbristylis dichotoma, with samples of this taxon appearing in two distinct clades within Fimbristylis. Further addition of geographically spread accessions of taxa will improve our understanding of the complex biogeographical history of the genera in the family. Eleocharis koyamae Tremetsb. & D.A.Simpson is proposed as a new name for E. macrorrhiza T. Koyama.

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.

Phylogeny and taxonomy of the Rhinorhynchinae (Coleoptera:Nemonychidae)

2010 ◽  
Vol 24 (6) ◽  
pp. 573 ◽  
Author(s):  
Guillermo Kuschel ◽  
Richard A. B. Leschen
Keyword(s):  
Phylogenetic Analysis ◽  
Type Species ◽  
New Caledonia ◽  
Molecular Data ◽  
Host Use ◽  
New Genera ◽  
Plant Associations ◽  
The Family ◽  
Fossil Genus ◽  
Subjective Synonym

An overview of the taxa of Rhinorhynchinae (Nemonychidae) is presented. A phylogenetic analysis of the 19 extant genera of the Rhinorhynchinae and one fossil genus from the Lower Cretaceous (Cratomacer Zherikhin & Gratshev), based on 29 characters of adults, larvae and host plant associations, shows three monophyletic groups, treated as tribes (Rhinorhynchini, Mecomacerini and Rhynchitomacerini). Primitive associations are unknown for Rhinorhynchinae and early host use diversification included associations with Ranunculaceae (Nemonyx Redtenbacher), Pinaceae (Cimberis Gozis), Nothofagaceae (Rhynchitomacerini) and Podocarpaceae (Rhinorhynchini). While Mecomacerini diversified on Araucariaceae, within Rhinorhynchini there was a single reversal to Araucariaceae and a shift in Atopomacer Kuschel to Pinaceae. Placement of Cratomacer into Mecomacerini is consistent with geological and molecular data that suggest gymnosperms may have been the primitive hosts for the family. Three new genera are described in Rhinorhynchinae: Araucomacer, gen. nov. (type species A. hirticeps Kuschel) from Chile, Idiomacer, gen. nov. (type species I. basicornis, sp. nov.) from New Caledonia, and Zimmiellus, gen. nov. (type species Z. fronto, sp. nov.) from Queensland, Australia, while Stenomacer Kuschel, stat. nov. from Chile is reinstated from synonymy. Seven species are described as new: Atopomacer grandifurca, sp. nov. from Costa Rica and Panama, A. obrieni, sp. nov. from Mexico, A. panamensis, sp. nov. from Panama, A. pini, sp. nov. from Mexico, A. podocarpi, sp. nov. from Venezuela, Basiliogeus dracrycarpi, sp. nov. from western New Guinea and B. inops, sp. nov. from Queensland. Rhynchitomacer rufus Kuschel is a new junior subjective synonym of R. nigritus Kuschel, syn. nov., R. viridulus Kuschel is a new junior subjective synonym of R. flavus Voss, syn. nov. and Stenomacer fuscus Kuschel is a new junior subjective synonym of S. vernus Kuschel, syn. nov. Keys to genera of Rhinorhynchinae and to species of Atopomacer, Rhynchitomacer and Stenomacer are included. Diagnoses of the three extant subfamilies of Nemonychidae are included.

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.

Anystipalpus, Antennoseius and Vitzthumia: a taxonomic and nomenclatural conundrum of genera (Acari: Mesostigmata: Dermanyssina), with description of four species of Anystipalpus

Zootaxa ◽  
2009 ◽  
Vol 2243 (1) ◽  
pp. 1-39 ◽  
Author(s):  
EVERT E. LINDQUIST ◽  
MARÍA L. MORAZA
Keyword(s):  
New Species ◽  
Type Species ◽  
Carabid Beetles ◽  
New Combination ◽  
Adult Females ◽  
The Family ◽  
Two New Species ◽  
Family Level ◽  
History Of

The genus Anystipalpus Berlese, 1911, of uncertain prior placement in the superfamilies Ascoidea or Dermanyssoidea, is redescribed, based on reexamination of type and other material of the type-species, A. percicola Berlese, and of material representing Anystipalpus livshitsi (Eidelberg) new combination and two new species, A. labiduricola n. sp. and A. kazemii n. sp. Anystipalpus nataliae (Eidelberg) new combination and Anystipalpus ukrainicus (Sklyar) new combination are determined to be junior synonyms of A. percicola Berlese and A. livshitsi (Eidelberg), respectively, new synonymies. The genus is known thus far only from adult females phoretic under the elytra of carabid beetles and the tegmina of labidurid earwigs in Eurasia. The relationships between it and the closely related Antennoseius Berlese, 1916 and Vitzthumia Thor, 1930, are reviewed, and the options for the family level placement of these genera are reconsidered. Attention is given to some gnathosomatic attributes that are commonly overlooked in description of species of these closely related genera. Phoresy and the role of adult female morphs in the life history of these mites, as well as the extraordinary phoretic association of one species with earwigs are discussed.

Karyotype Evolution and Distinct Evolutionary History of the W Chromosomes in Swallows (Aves, Passeriformes)

2019 ◽  
Vol 158 (2) ◽  
pp. 98-105 ◽  
Author(s):  
Suziane A. Barcellos ◽  
Rafael Kretschmer ◽  
Marcelo S. de Souza ◽  
Alice L. Costa ◽  
Tiago M. Degrandi ◽  
...  
Keyword(s):  
Dna Sequences ◽  
Evolutionary History ◽  
Karyotype Evolution ◽  
Sex Chromosome ◽  
Repetitive Sequences ◽  
Z Chromosome ◽  
W Chromosome ◽  
The Family ◽  
Agnor Staining ◽  
History Of

As in many other bird groups, data on karyotype organization and distribution of repetitive sequences are also lacking in species belonging to the family Hirundinidae. Thus, in the present study, we analyzed the karyotypes of 3 swallow species (Progne tapera, Progne chalybea, and Pygochelidon cyanoleuca) by Giemsa and AgNOR staining, C-banding, and FISH with 11 microsatellite sequences. The diploid chromosome number was 2n = 76 in all 3 species, and NORs were observed in 2 chromosome pairs each. The microsatellite distribution pattern was similar in both Progne species, whereas P. cyanoleuca presented a distinct organization. These repetitive DNA sequences were found in the centromeric, pericentromeric, and telomeric regions of the macrochromosomes, as well as in 2 interstitial blocks in the W chromosome. Most microchromosomes had mainly telomeric signals. The Z chromosome displayed 1 hybridization signal in P. tapera but none in the other species. In contrast, the W chromosome showed an accumulation of different microsatellite sequences. The swallow W chromosome is larger than that of most Passeriformes. The observed enlargement in chromosome size might be explained by these high amounts of repetitive sequences. In sum, our data highlight the significant role that microsatellite sequences may play in sex chromosome differentiation.

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