scholarly journals Ornithodoros quilinensis sp. nov. (Acari, Argasidae), a new tick species from the Chacoan region in Argentina

2012 ◽  
Vol 57 (3) ◽  
Author(s):  
José Venzal ◽  
Santiago Nava ◽  
Atilio Mangold ◽  
Mariano Mastropaolo ◽  
Gustavo Casás ◽  
...  
Keyword(s):  
New Species ◽  
16S Rdna ◽  
Tick Species ◽  
Dorsal Plate ◽  
Dental Formula ◽  
Base Length ◽  
Small Rodents ◽  
Rdna Sequences ◽  
Haller's Organ ◽  
16S Rdna Sequences

AbstractOrnithodoros quilinensis sp. nov. (Acari: Argasidae) is described from larvae collected on the small rodents Graomys centralis (Cricetidae: Sigmodontinae) in Argentina. The diagnostic characters for this new species are a combination of small size (520–540 μm), a dorsal plate oval in shape with a length of approximately 200 μm, 14 pairs of dorsal setae, hypostome short and narrower at the base (length from Ph1 to apex 133 μm (120–141)) with dental formula 2/2 and apex blunt, and the capsule of the Haller’s organ irregular in shape and without reticulations. The analysis of the 16S rDNA sequences available for the genus Ornithodoros indicate that, phylogenetically, O. quilinensis represents an independent lineage only related to a Bolivian tick species of the genus Ornithodoros yet not formally described.

A new long-legged terrestrial freshwater crab, Calcipotamon puglabrum gen. nov. et sp. nov. (Crustacea: Decapoda: Potamidae), from Hainan Island, China

Zootaxa ◽  
2020 ◽  
Vol 4766 (3) ◽  
pp. 447-456 ◽  
Author(s):  
CHAO HUANG ◽  
SHENG-ZHUO HUANG ◽  
ZHI-XIN SHEN
Keyword(s):  
New Species ◽  
16S Rdna ◽  
Molecular Analysis ◽  
New Genus ◽  
Hainan Island ◽  
Freshwater Crab ◽  
General Biology ◽  
Rdna Sequences ◽  
16S Rdna Sequences ◽  
Mitochondrial 16S Rdna

A new genus and new species of terrestrial freshwater crab, Calcipotamon puglabrum gen. nov. et sp. nov., is described from the limestone forests of Changjiang, Hainan Island, China, based on morphology and mitochondrial 16S rDNA sequences. The new genus is closest to Neotiwaripotamon Dai & Naiyanetr, 1994, and Tiwaripotamon Bott, 1970, but differs in a combination of carapace, third maxilliped, ambulatory leg and male gonopod characters. Molecular analysis shows that the new genus is closely related with but not clustered within other Hainan potamid genera. Notes on the general biology of this new species are also provided. 

scholarly journals Two new species of freshwater crabs of the genera Eosamon Yeo & Ng, 2007 and Indochinamon Yeo & Ng, 2007 (Crustacea, Brachyura, Potamidae) from southern Yunnan, China

ZooKeys ◽  
2020 ◽  
Vol 980 ◽  
pp. 1-21
Author(s):  
Zewei Zhang ◽  
Da Pan ◽  
Xiyang Hao ◽  
Hongying Sun
Keyword(s):  
New Species ◽  
16S Rdna ◽  
New Taxa ◽  
Molecular Analyses ◽  
Systematic Status ◽  
Freshwater Crabs ◽  
Rdna Sequences ◽  
16S Rdna Sequences ◽  
Two New Species ◽  
Mitochondrial 16S Rdna

Two new species of potamid crabs, Eosamon daiaesp. nov. and Indochinamon malipoensesp. nov. are described from the Sino-Burmese border, southwestern Yunnan and from the Sino-Vietnamese border, southeastern Yunnan, China. The two new species can be distinguished from their closest congeners by several characters, among which is the form of the first gonopod structures. Molecular analyses based on partial mitochondrial 16S rDNA sequences also support the systematic status of these new taxa.

Descriptions of a new species of Minpotamon Dai & Türkay, 1997, and a monotypic new genus of aquatic freshwater crab (Brachyura, Potamidae) from eastern Guangdong, China

Crustaceana ◽  
2020 ◽  
Vol 93 (11-12) ◽  
pp. 1295-1313
Author(s):  
Si-Ying Mao ◽  
Chao Huang
Keyword(s):  
New Species ◽  
Genetic Distance ◽  
16S Rdna ◽  
New Genus ◽  
Freshwater Crab ◽  
Unique Combination ◽  
Rdna Sequences ◽  
16S Rdna Sequences ◽  
Mitochondrial 16S Rdna ◽  
A New Species

Abstract A new genus new species of freshwater crab and a new Minpotamon Dai & Türkay, 1997 species are described from eastern Guangdong, China, based on morphology and mitochondrial 16S rDNA sequences. The new genus, Teoswamon gen. nov., is established for T. scolasticum sp. nov., which resembles species from several other genera from Guangdong, but its unique combination of carapace, male gonopod and female vulvae characters set it apart from others. Minpotamon kityang sp. nov. is almost identical with Minpotamon nasicum (Dai, Chen, Song, Fan, Lin & Zeng, 1979) externally, but differs drastically in the male gonopod morphology. Molecular analysis supports the current taxonomic treatments. Teoswamon scolasticum sp. nov. forms its own lineage closely related to Huananpotamon Dai & Ng, 1994. Minpotamon kityang sp. nov. clusters with Minpotamon nasicum, but their genetic distance is of an interspecific level.

scholarly journals The phylogeny of the genusYersiniabased on 16S rDNA sequences

1993 ◽  
Vol 114 (2) ◽  
pp. 173-177 ◽  
Author(s):  
A. Ibrahim ◽  
B.M. Goebel ◽  
W. Liesack ◽  
M. Griffiths ◽  
E. Stackebrandt
Keyword(s):  
16S Rdna ◽  
Rdna Sequences ◽  
16S Rdna Sequences

scholarly journals Isolation and Identification of Hydrocarbon-Degrading Bacteria that Tolerant to Saponin of Sapindus Rarak Plant

2019 ◽  
Vol 4 (1) ◽  
pp. 79-88
Author(s):  
Evi Octaviany ◽  
Suharjono Suharjono ◽  
Irfan Mustafa
Keyword(s):  
Crude Oil ◽  
16S Rdna ◽  
Bacterial Isolates ◽  
High Concentration ◽  
Isolation And Identification ◽  
Rdna Sequences ◽  
Degrading Bacteria ◽  
16S Rdna Sequences ◽  
Petroleum Contaminated Soil ◽  
Cell Densities

A commercial saponin as biosurfactant can reduce the surface tension of water and increase of hydrocarbon degradation. However, this saponin can be toxic to some hydrocarbonoclastic bac-teria. This study aimed to obtain bacterial isolates that were tolerant and incapable to degrade saponin, and to identify them based on 16S rDNA sequence. Bacteria were isolated from petroleum contaminated soil in Wonocolo Village, Bojonegoro Regency, East Java, Indonesia. The soil samples were acclimated using Bushnell-Haas (BH) broth with 0.5% crude oil at room temperature for 3 weeks. The culture was spread onto BH agar incubated at 30°C for 7 days. The first screened, isolates were grown in nutrient broth with addition of sap-onin 0%, 8%, and 12% (v/v) then incubated at 30°C for three days. The bacterial cell density was measured using a spectrophotometer. Second screened, the isolates were grown on BH broth with addition of 0.5% saponin as a sole carbon source, and their cell densities were measured. The selected isolates were identified based on 16S rDNA sequences. Among 34 bacterial isolates, nine isolates were tol-erant to 12% saponin. Three bacterial isolates IHT1.3, IHT1.5, and IHT3.24 tolerant to high concentration of saponin and did not use this substance as growth nutrition. The IHT1.3, IHT1.5, and IHT3.24 isolates were identified as Ochrobactrum pseudogrignonense (99% similarity), Pseudomonas mendocina (99%), and Ochrobactrum pi-tuitosum; (97%), respectively. Those three selected isolates are good candidates as hydrocarbon-degrading bacteria to bioremediation of soil contaminated crude oil. However, the combined activity of bacteria and saponin to degrade hydrocarbon needs further study. 

Identification of host-specific Bacteroidales 16S rDNA sequences from human sewage and ruminant feces

2011 ◽  
Vol 52 (3) ◽  
pp. 277-284 ◽  
Author(s):  
Siobhán Dorai-Raj ◽  
Justin O'Grady ◽  
Martin Cormican ◽  
Emer Colleran
Keyword(s):  
16S Rdna ◽  
Rdna Sequences ◽  
16S Rdna Sequences

Human intestinal spirochetosis diagnosed with colonoscopy and analysis of partial 16S rDNA sequences of involved spirochetes

2001 ◽  
Vol 2 (1) ◽  
pp. 111-116 ◽  
Author(s):  
Wolfgang Kraatz ◽  
Ulf Thunberg ◽  
Bertil Pettersson ◽  
Claes Fellström
Keyword(s):  
16S Rdna ◽  
Type Strain ◽  
Sequence Similarity ◽  
Rdna Sequences ◽  
Intestinal Spirochetosis ◽  
16S Rdna Sequences ◽  
Pcr Products ◽  
Human Intestinal Spirochetosis ◽  
Type Strains ◽  
Rrna Sequences

AbstractDNA was extracted from colonic biopsies of 33 patients with and three without evidence of intestinal spirochetosis (IS) in the large bowel. The biopsies were subjected to PCR. A pair of primers, generating a 207 bp fragment, were designed to detect specifically the 16S rDNA gene ofBrachyspira. PCR products of the expected size were obtained from 33 samples with histologic evidence of IS. The PCR amplicons were used for sequencing. The sequences obtained were aligned to the corresponding 16S rRNA sequences of five type strains ofBrachyspira. The sequences of 23 PCR products were 99–100% identical with the correspond-ingB.aalborgitype strain sequence. Two cases showed 99–100% sequence similarity with the type strain ofB.pilosicoliP43/6/78. Six cases could not be referred to any of the known species ofBrachyspira. Two PCR products gave incomplete sequences.

scholarly journals Mitocondrial COI and 16S rDNA sequences support morphological identification and biogeography of deep-sea red crabs of the genus Chaceon (Crustacea, Decapoda, Geryonidae) in the Eastern Central and South Atlantic Ocean

PLoS ONE ◽  
2019 ◽  
Vol 14 (2) ◽  
pp. e0211717
Author(s):  
Mariano Hernández ◽  
M. Virginia Martín ◽  
Pedro M. Herrador-Gómez ◽  
Sebastián Jiménez ◽  
Carlos Hernández-González ◽  
...  
Keyword(s):  
Atlantic Ocean ◽  
16S Rdna ◽  
Deep Sea ◽  
South Atlantic ◽  
South Atlantic Ocean ◽  
Morphological Identification ◽  
Rdna Sequences ◽  
16S Rdna Sequences
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