scholarly journals Molecular analysis of populations of the invasive species Rhynchophorus ferrugineus Olivier, 1790 (Coleoptera: Curculionidae) in the Region of Murcia (Spain)

2017 ◽  
pp. 155-176
Author(s):  
Miguel Lozano-Terol ◽  
María Juliana Rodríguez-García ◽  
José Galián

En este estudio se analizan dos fragmentos del gen de la citocromo c oxidasa subunidad I (COX1) del ADN mitocondrial de 61 individuos del género Rhynchophorus colectados en la Región de Murcia a fin de determinar su procedencia. El análisis filogenético del fragmento 1 de las muestras de la Región de Murcia conjuntamente con las secuencias disponibles en GenBank indica que los individuos corresponden a la especie Rhynchophorus ferrugineus.Las secuencias de Murcia se colapsan en un único haplotipo (H8 mediterráneo) que aparece dentro del clado de R. ferrugineus. De los análisis filogeográficos se infiere que el origen de los individuos de Murcia es Egipto. Adicionalmente, se examinó una región contigua del COX1 (fragmento 2) en la que las secuencias se colapsaron en dos haplotipos. In this research two fragments of the cytochrome c oxidase subunit I (COX1) gene of the mitochondrial DNA were analyzed in 61 individuals of the genus Rhynchophorus collected in the Region of Murcia with the aim of determining their origin. Phylogenetic analysis of fragment 1 of the samples collected in the Region of Murcia together with the available sequences in GenBank, indicated that these individuals correspond to the species R. ferrugineus. Sequences from Murcia collapsed into the H8 Mediterranean haplotype, which cluster into the R. ferrugineus clade. Phylogeographic analysis shows that the origin of the individuals collected in the Region of Murcia is Egypt. Additionally, a contiguous fragment of COX1 (fragment 2) was analyzed and the sequences collapsed into two haplotypes.

Zootaxa ◽  
2022 ◽  
Vol 5091 (4) ◽  
pp. 546-558
Author(s):  
ZHAOYANG CHEN ◽  
FENGXIANG LIU ◽  
DAIQIN LI ◽  
XIN XU

This paper reports four new species of the primitively segmented spider genus Songthela from Chongqing Municipality, China, based on morphological characters of both males and females: S. jinyun sp. nov., S. longbao sp. nov., S. serriformis sp. nov. and S. wangerbao sp. nov. We also provide the GenBank accession codes of mitochondrial DNA barcode gene, cytochrome c oxidase subunit I (COI), for the holotype of four new species for future identification.  


2021 ◽  
Vol Vol 66 (1) (January (1)) ◽  
pp. 1-5
Author(s):  
Jerome Goddard ◽  
Gerald Baker ◽  
Petra Jericke ◽  
Lawrence Birchman ◽  
Ethan Woodward ◽  
...  

Ultrastructural and molecular data are provided from a single adult female pentastomid opportunistically collected from a road-killed rattlesnake in Russell, KS. Ultrastructural data consisted of light and SEM microscopy of the pentastomid and its eggs, while molecular data consisted of partial 18S and 28S ribosomal sequences and a partial cytochrome c oxidase subunit 1 sequence from the same specimen used for SEM. Ultrastructural and molecular data support generic identification of the pentastomid as Porocephalus sp. These molecular data were also used with previously published pentastomid sequence data for a concatenated phylogenetic analysis, which support the current, morphology-based taxonomic placement of the genus.


Gene ◽  
2016 ◽  
Vol 592 (2) ◽  
pp. 303-307 ◽  
Author(s):  
Yao-Dong Hu ◽  
Hui-Zhong Pang ◽  
De-Sheng Li ◽  
Shan-Shan Ling ◽  
Dan Lan ◽  
...  

2006 ◽  
Vol 80 (1) ◽  
pp. 7-13 ◽  
Author(s):  
K. Ando ◽  
M. Tsunemori ◽  
H. Akahane ◽  
S. Tesana ◽  
H. Hasegawa ◽  
...  

AbstractThe nucleotide sequences of partial 18S, complete internal transcribed spacer region 1 (ITS1), complete 5.8S, complete ITS2 and partial 28S of ribosomal DNA (rDNA) and cytochrome c oxidase subunit 1 of mitochondrial DNA (MCOI) from five species of gnathostomes (G. spinigerum, G. doloresi, G. nipponicum, G. hispidum and G. binucleatum with the former four species being distributed in Japan and Asia) that cause human gnathostomiasis were compared by direct polymerase chain reaction cycle-sequencing. The nucleotide sequences of each region of the18S (613 bp), 5.8S (158 bp) and 28S (598 bp) rDNA from the five species were almost identical. The ITS1 region was different in length for the five species. The nucleotide sequences of each region of ITS2 and partial MCO1 regions were different among the five species. Therefore, these two regions can be used as genetic markers for identification of worms.


2019 ◽  
Author(s):  
Mandana Fadaei Tehrani ◽  
Meysam Sharifdini ◽  
Farzaneh Zahabiun ◽  
Robabeh Latifi ◽  
Eshrat bigom Kia

Abstract Background: In microscopical examinations of stool samples, S. stercoralis may be miss-diagnosed with other nematodes infecting human digestive system, especially Rhabditis species that release larvae in stool samples. The aim of this study was molecular characterization and differentiation of human derived isolates of S. stercoralis and Rhabditis species based on the mitochondrial gene of cytochrome c oxidase subunit 1 (cox1) amplification. Methods: Using parasitological methods, ten isolates of S. stercoralis and three isolates of Rhabditis spp. were obtained from fresh stool samples of patients and the genomic DNA of the samples were extracted. PCR amplification of cox1 gene was carried out for all the isolates and the products were sequenced. Results: The phylogenetic analysis illustrated that S. stercoralis and Rhabditis spp. isolates were placed in two distinguishable separate clades. Inter-species genetic variation between isolates of S. stercoralis and Rhabditis spp. were ranged from 13.5 to 14.5%. Conclusions: Cox1 gene was a suitable marker for discrimination of S. stercoralis from Rhabditis spp. retrieved from human in the current study.


2021 ◽  
Vol 11 (1) ◽  
pp. 75
Author(s):  
Siti Marfuah ◽  
Beivy Jonathan Kolondam ◽  
Trina Ekawati Tallei

(Article History: Received January 6, 2021; Revised February 12, 2021; Accepted February 28, 2021) ABSTRAK Hilangnya spesies dan adanya spesies invasif dalam suatu habitat dapat menjadi ancaman bagi spesies asli dalam satu ekosistem. Untuk itu diperlukan teknik terkini yang mampu mendeteksi keberadaan suatu organisme. Salah satu teknik yang dapat mendeteksi organisme target di lingkungan secara cepat dan akurat yaitu environmental DNA (e-DNA).Tujuan dari ulasan artikel ini yaitu untuk mengeksplorasi kemampuan e-DNA secara ekogenomik untuk pemantauan dan konservasi keanekaragaman hayati. Ulasan artikel ini menggunakan data sekunder yang diperoleh dari berbagai database yang berbasis dalam jaringan. Hasil analisis memperlihatkan bahwa dengan menggunakan pendekatan e-DNA pemantauan dan konsevasi keanekaragaman hayati dapat dideteksi sesuai dengan taksonomi organisme dan penanda molekuler. Penanda molekuler Cytochrome c Oxidase subunit 1 (COI) mampu mendeteksi berbagai spesies baik langka dan invasif. Dengan demikian dapat disimpulkan bahwa pendekatan e-DNA dapat dijadikan sebagai metode untuk pemantauan dan konsevasi keanekaragaman hayati pada berbagai ekosistem.Kata - kata kunci: environmental DNA; keanekaragaman hayati dan konservasi; penanda molekuler  ABSTRACTThe loss of species and the presence of invasive species in a habitat can be a threat to native species in an ecosystem. So we need the latest techniques that are able to detect the presence of an organism. One technique that can detect target organisms in the environment quickly and accurately is environmental DNA (e-DNA). The purpose of this review article is to explore the ecogenomic ability of e-DNA for monitoring and conservation of biodiversity. This article reviews using secondary data obtained from various network-based databases. The results of the analysis show that by using the e-DNA approach, monitoring and conservation of biological diversity can be detected according to the taxonomy of organisms and molecular markers. Cytochrome c Oxidase subunit 1 (COI) molecular markers are capable of detecting a variety of both rare and invasive species. Thus it can be concluded that the e-DNA approach can be used as a method for monitoring and conservation of biological diversity in various ecosystems.Keywords: environmental DNA; biodiversity and conservation; molecular markers


2019 ◽  
Vol 967 ◽  
pp. 59-64
Author(s):  
Yash Munnalal Gupta ◽  
Kittisak Buddhachat ◽  
Surin Peyachoknagul ◽  
Somjit Homchan

The potential of mitochondrial DNA (mtDNA) genes are well-known for species identification and to establish a phylogenetic relationship. The De-novo transcriptome assembly of Acheta domesticus commonly known as house cricket, is provides important segments of DNA fragments from mitochondrial DNA due to higher abundance of its mRNA. When the reference sequence with gene annotation is absent for assembling and aligning desire gene sequences, like in the present case, the most similar sequence is obtained from online insect mitochondrial genome database to find mitochondrial DNA conserved domains of interested gene from high throughput RNA sequencing (RNA-seq) data. The RNA-seq data of Acheta domesticus transcriptome is used to retrieve single nucleotide fragment out of 50,046 assembled contigs to discover three important genes from mtDNA of the house cricket. Present study provides effective workflow to identify genes like cytochrome c oxidase subunit II (COX2), NADH dehydrogenase subunit 2 (ND2), cytochrome c oxidase subunit I (COX1) from mtDNA in large sequence archive of RNA-seq data. These three novel barcode sequences will be useful for genetic identification and evolution investigation of Acheta domesticus. The partial mtDNA sequence with these genes will be important for mitochondrial genome construction.


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