scholarly journals Traces of Late Bronze and Early Iron Age Mongolian Horse Mitochondrial Lineages in Modern Populations

Genes ◽  
2021 ◽  
Vol 12 (3) ◽  
pp. 412
Author(s):  
Mariya A. Kusliy ◽  
Nadezhda V. Vorobieva ◽  
Alexey A. Tishkin ◽  
Alexey I. Makunin ◽  
Anna S. Druzhkova ◽  
...  
Keyword(s):  
Middle East ◽  
Iron Age ◽  
High Throughput Sequencing ◽  
Complete Mitochondrial Genome ◽  
Population History ◽  
Genome Data ◽  
Lack Of Information ◽  
Stone Culture ◽  
Similar Haplotype ◽  
Mongolian Horse

The Mongolian horse is one of the most ancient and relatively unmanaged horse breeds. The population history of the Mongolian horse remains poorly understood due to a lack of information on ancient and modern DNA. Here, we report nearly complete mitochondrial genome data obtained from five ancient Mongolian horse samples of the Khereksur and Deer Stone culture (late 2nd to 1st third of the 1st millennium BC) and one ancient horse specimen from the Xiongnu culture (1st century BC to 1st century AD) using target enrichment and high-throughput sequencing methods. Phylogenetic analysis involving ancient, historical, and modern mitogenomes of horses from Mongolia and other regions showed the presence of three mitochondrial haplogroups in the ancient Mongolian horse populations studied here and similar haplotype composition of ancient and modern horse populations of Mongolia. Our results revealed genetic continuity between the Mongolian horse populations of the Khereksur and Deer Stone culture and those of the Xiongnu culture owing to the presence of related mitotypes. Besides, we report close phylogenetic relationships between haplotypes of the Khereksur and Deer Stone horses and the horses of indigenous breeds of the Middle East (Caspian and Iranian), China (Naqu, Yunnan, and Jinjiang), and Italy (Giara) as well as genetic similarity between the Xiongnu Mongolian horses and those of the most ancient breeds of the Middle East (Arabian) and Central Asia (Akhal-Teke). Despite all the migrations of the Mongolian peoples over the past 3000 years, mitochondrial haplogroup composition of Mongolian horse populations remains almost unchanged.

scholarly journals Human mitochondrial DNA lineages in Iron-Age Fennoscandia suggest incipient admixture and eastern introduction of farming-related maternal ancestry

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Sanni Översti ◽  
Kerttu Majander ◽  
Elina Salmela ◽  
Kati Salo ◽  
Laura Arppe ◽  
...  
Keyword(s):  
Iron Age ◽  
High Mobility ◽  
Human Remains ◽  
Population History ◽  
Hunter Gatherers ◽  
East Europe ◽  
North East ◽  
Mtdna Diversity ◽  
The Baltic ◽  
Genetic Shift

AbstractHuman ancient DNA studies have revealed high mobility in Europe’s past, and have helped to decode the human history on the Eurasian continent. Northeastern Europe, especially north of the Baltic Sea, however, remains less well understood largely due to the lack of preserved human remains. Finland, with a divergent population history from most of Europe, offers a unique perspective to hunter-gatherer way of life, but thus far genetic information on prehistoric human groups in Finland is nearly absent. Here we report 103 complete ancient mitochondrial genomes from human remains dated to AD 300–1800, and explore mtDNA diversity associated with hunter-gatherers and Neolithic farmers. The results indicate largely unadmixed mtDNA pools of differing ancestries from Iron-Age on, suggesting a rather late genetic shift from hunter-gatherers towards farmers in North-East Europe. Furthermore, the data suggest eastern introduction of farmer-related haplogroups into Finland, contradicting contemporary genetic patterns in Finns.

Positive Check or Chinese Checks?

2002 ◽  
Vol 61 (2) ◽  
pp. 591-607 ◽  
Author(s):  
James Lee ◽  
Cameron Campbell ◽  
Wang Feng
Keyword(s):  
Population Size ◽  
Chinese Population ◽  
European Population ◽  
Population History ◽  
Late Imperial China ◽  
Late Imperial ◽  
Lack Of Information ◽  
Preventive Check ◽  
Demographic Behavior ◽  
English Population

As recently as twenty-five years ago, there were virtually no demographers of China and there was little available data on Chinese demographic behavior. Thus in spite of intense interest in China's population dating back at least to Malthus (1766–1834), his initial understanding, or rather misunderstanding, of Chinese population dynamics remains dominant. While recent research on European population history has confirmed Malthus's observations that European, or at least English, population size was controlled largely by the preventive check, nuptiality, the absence of similar studies of Chinese population history ironically facilitated the persistence of a Malthusian hypothesis that Chinese population size was controlled largely by the positive check, mortality. It is a tribute to the elegance and power of the Malthusian orthodoxy that in spite of the lack of information on Chinese historic demographic behavior and economic performance, many of the most distinguished Western scholars of late imperial China continue to interpret social and economic processes in China during the last three hundred years in Malthusian or neo-Malthusian terms (Elvin 1973; Chao 1986; Huang 1990).

scholarly journals Complete mitochondrial genome sequence of Labriocimbex sinicus, a new genus and new species of Cimbicidae (Hymenoptera) from China

PeerJ ◽  
2019 ◽  
Vol 7 ◽  
pp. e7853 ◽  
Author(s):  
Yuchen Yan ◽  
Gengyun Niu ◽  
Yaoyao Zhang ◽  
Qianying Ren ◽  
Shiyu Du ◽  
...  
Keyword(s):  
Mitochondrial Genome ◽  
New Genus ◽  
High Throughput Sequencing ◽  
Phylogenetic Analyses ◽  
Complete Mitochondrial Genome ◽  
Sister Group ◽  
Morphological Characters ◽  
Trna Genes ◽  
Sequencing Data ◽  
Link Type

Labriocimbex sinicus Yan & Wei gen. et sp. nov. of Cimbicidae is described. The new genus is similar to Praia Andre and Trichiosoma Leach. A key to extant Holarctic genera of Cimbicinae is provided. To identify the phylogenetic placement of Cimbicidae, the mitochondrial genome of L. sinicus was annotated and characterized using high-throughput sequencing data. The complete mitochondrial genome of L. sinicus was obtained with a length of 15,405 bp (GenBank: MH136623; SRA: SRR8270383) and a typical set of 37 genes (22 tRNAs, 13 PCGs, and two rRNAs). The results demonstrated that all PCGs were initiated by ATN codon, and ended with TAA or T stop codons. The study reveals that all tRNA genes have a typical clover-leaf secondary structure, except for trnS1. Remarkably, the secondary structures of the rrnS and rrnL of L. sinicus were much different from those of Corynis lateralis. Phylogenetic analyses verified the monophyly and positions of the three Cimbicidae species within the superfamily Tenthredinoidea and demonstrated a relationship as (Tenthredinidae + Cimbicidae) + (Argidae + Pergidae) with strong nodal supports. Furthermore, we found that the generic relationships of Cimbicidae revealed by the phylogenetic analyses based on COI genes agree quite closely with the systematic arrangement of the genera based on the morphological characters. Phylogenetic tree based on two methods shows that L. sinicus is the sister group of Praia with high support values. We suggest that Labriocimbex belongs to the tribe Trichiosomini of Cimbicinae based on adult morphology and molecular data. Besides, we suggest to promote the subgenus Asitrichiosoma to be a valid genus.

scholarly journals Population Genetic Structure of the Invasive Spotted Alfalfa Aphid Therioaphis trifolii (Hemiptera: Aphididae) in China Inferred From Complete Mitochondrial Genomes

2021 ◽  
Vol 9 ◽  
Author(s):  
Xinzhi Liu ◽  
Shuhua Wei ◽  
Zhenyong Du ◽  
Jia He ◽  
Xinyue Zhang ◽  
...  
Keyword(s):  
Invasive Species ◽  
Genetic Structure ◽  
Population Genetic ◽  
High Throughput Sequencing ◽  
Demographic History ◽  
Complete Mitochondrial Genome ◽  
Haplotype Diversity ◽  
Evolutionary Process ◽  
Invasion History ◽  
Ecosystem Integrity

Biological invasions represent a natural rapid evolutionary process in which invasive species may present a major threat to biodiversity and ecosystem integrity. Analyzing the genetic structure and demographic history of invaded populations is critical for the effective management of invasive species. The spotted alfalfa aphid (SAA) Therioaphis trifolii is indigenous in the Mediterranean region of Europe and Africa and has invaded China, causing severe damages to the alfalfa industry. However, little is known about its genetic structure and invasion history. In this study, we obtained 167 complete mitochondrial genome sequences from 23 SAA populations across China based on high-throughput sequencing and performed population genetic and phylogenomic analyses. High haplotype diversity and low nucleotide diversity were found in SAA populations in China with distinct genetic structures, i.e., all populations diverged into three phylogenetic lineages. Demographic history analyses showed a recent expansion of the SAA population, consistent with the recent invasion history. Our study indicated that SAA may have invaded through multiple introduction events during commercial trades of alfalfa, although this needs further validation by nuclear markers.

scholarly journals A Phylogenomic Approach to Clarifying the Relationship of Mesodinium within the Ciliophora: A Case Study in the Complexity of Mixed-Species Transcriptome Analyses

2019 ◽  
Vol 11 (11) ◽  
pp. 3218-3232
Author(s):  
Erica Lasek-Nesselquist ◽  
Matthew D Johnson
Keyword(s):  
High Throughput Sequencing ◽  
Phylogenetic Position ◽  
Mixed Species ◽  
Data Set ◽  
Sequencing Project ◽  
Genome Data ◽  
Massive Sequencing ◽  
Relationship Of ◽  
The Relationship

Abstract Recent high-throughput sequencing endeavors have yielded multigene/protein phylogenies that confidently resolve several inter- and intra-class relationships within the phylum Ciliophora. We leverage the massive sequencing efforts from the Marine Microbial Eukaryote Transcriptome Sequencing Project, other SRA submissions, and available genome data with our own sequencing efforts to determine the phylogenetic position of Mesodinium and to generate the most taxonomically rich phylogenomic ciliate tree to date. Regardless of the data mining strategy, the multiprotein data set, or the molecular models of evolution employed, we consistently recovered the same well-supported relationships among ciliate classes, confirming many of the higher-level relationships previously identified. Mesodinium always formed a monophyletic group with members of the Litostomatea, with mixotrophic species of Mesodinium—M. rubrum, M. major, and M. chamaeleon—being more closely related to each other than to the heterotrophic member, M. pulex. The well-supported position of Mesodinium as sister to other litostomes contrasts with previous molecular analyses including those from phylogenomic studies that exploited the same transcriptomic databases. These topological discrepancies illustrate the need for caution when mining mixed-species transcriptomes and indicate that identifying ciliate sequences among prey contamination—particularly for Mesodinium species where expression from stolen prey nuclei appears to dominate—requires thorough and iterative vetting with phylogenies that incorporate sequences from a large outgroup of prey.

scholarly journals Multi-Body-Site Microbiome and Culture Profiling of Military Trainees Suffering from Skin and Soft Tissue Infections at Fort Benning, Georgia

mSphere ◽  
2016 ◽  
Vol 1 (5) ◽  
Author(s):  
Jatinder Singh ◽  
Ryan C. Johnson ◽  
Carey D. Schlett ◽  
Emad M. Elassal ◽  
Katrina B. Crawford ◽  
...  
Keyword(s):  
High Throughput ◽  
High Throughput Sequencing ◽  
Bacterial Community Composition ◽  
Soft Tissue Infections ◽  
Microbial Composition ◽  
Content Type ◽  
Microbial Dysbiosis ◽  
Lack Of Information ◽  
The Impact ◽  
Nasal Microbiota

ABSTRACT While it is evident that nasal colonization with S. aureus increases the likelihood of SSTI, there is a significant lack of information regarding the contribution of extranasal colonization to the overall risk of a subsequent SSTI. Furthermore, the impact of S. aureus colonization on bacterial community composition outside the nasal microbiota is unclear. Thus, this report represents the first investigation that utilized both culture and high-throughput sequencing techniques to analyze microbial dysbiosis at multiple body sites of healthy and diseased/colonized individuals. The results described here may be useful in the design of future methodologies to treat and prevent SSTIs. Skin and soft tissue infections (SSTIs) are common in the general population, with increased prevalence among military trainees. Previous research has revealed numerous nasal microbial signatures that correlate with SSTI development and Staphylococcus aureus colonization. Thus, we hypothesized that the ecology of the inguinal, oropharynx, and perianal regions may also be altered in response to SSTI and/or S. aureus colonization. We collected body site samples from 46 military trainees with purulent abscess (SSTI group) as well as from 66 asymptomatic controls (non-SSTI group). We also collected abscess cavity samples to assess the microbial composition of these infections. Samples were analyzed by culture, and the microbial communities were characterized by high-throughput sequencing. We found that the nasal, inguinal, and perianal regions were similar in microbial composition and significantly differed from the oropharynx. We also observed differences in Anaerococcus and Streptococcus abundance between the SSTI and non-SSTI groups for the nasal and oropharyngeal regions, respectively. Furthermore, we detected community membership differences between the SSTI and non-SSTI groups for the nasal and inguinal sites. Compared to that of the other regions, the microbial compositions of the nares of S. aureus carriers and noncarriers were dramatically different; we noted an inverse correlation between the presence of Corynebacterium and the presence of Staphylococcus in the nares. This correlation was also observed for the inguinal region. Culture analysis revealed elevated methicillin-resistant S. aureus (MRSA) colonization levels for the SSTI group in the nasal and inguinal body sites. Together, these data suggest significant microbial variability in patients with SSTI as well as between S. aureus carriers and noncarriers. IMPORTANCE While it is evident that nasal colonization with S. aureus increases the likelihood of SSTI, there is a significant lack of information regarding the contribution of extranasal colonization to the overall risk of a subsequent SSTI. Furthermore, the impact of S. aureus colonization on bacterial community composition outside the nasal microbiota is unclear. Thus, this report represents the first investigation that utilized both culture and high-throughput sequencing techniques to analyze microbial dysbiosis at multiple body sites of healthy and diseased/colonized individuals. The results described here may be useful in the design of future methodologies to treat and prevent SSTIs.

scholarly journals Media in the Middle East

1996 ◽  
Vol 13 (2) ◽  
pp. 275-278
Author(s):  
Abdelwahab El-Affendi
Keyword(s):  
United States ◽  
Middle East ◽  
Mass Media ◽  
The United States ◽  
Arab Countries ◽  
Hard Work ◽  
Lack Of Information ◽  
The Media ◽  
Media Systems ◽  
Comprehensive Study

As evidenced by its subtitle, this book is a mighty ambitious work. Theeditors, recognizing the "woeful lack of information on the [Middle East's]media systems," present the book as "the first comprehensive study of thestructure and functions of the mass media in the Middle East." And it tooka lot of hard work, being the "culmination of more than two years ofresearch and writing by 32 mass media scholars from across the MiddleEast and the United States."The books covers twenty-one countries. The Middle East is definedhere as most Arab countries (Morocco, Sudan, Yemen, and Somalia wereleft out) plus Iran, Turkey, Israel, Pakistan, and Afghanistan.There is no question that a serious gap in information exists in the areathe book attempts to cover. It is also safe to say that the researchersinvolved did a great job, assembling in one volume a wealth of infomiationon the structure of the media in the Middle East. One can at a glance gleanup-to-date information about what publications are produced in each country,who owns them, what radio and television channels are available, whattimes they broadcast, what regulations exist, and how the media fit in thefuller picture ...

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