scholarly journals Study on haplotype diversity of Y-STR loci of the Kinh population in Vietnam

2017 ◽  
Vol 33 (2S) ◽  
Author(s):  
Trinh Tuan Toan ◽  
Vu Le Loi ◽  
Ha Quoc Khanh ◽  
Nguyen Quang Vinh ◽  
Nguyen Quang Huy
Keyword(s):  
Haplotype Diversity ◽  
Genetic Distances ◽  
Statistical Validation ◽  
Finger Nail ◽  
Str Loci ◽  
The North ◽  
Migration History ◽  
Close Relationship ◽  
Forensic Case ◽  
North And South

The study was carried out to determine allele frequencies of Y-STRloci in order to apply in the statistical validation of forensic case and paternal lineages. 17 Y-STR loci were co-amplified (including: DYS19, DYS389I, DYS389II, DYS390, DYS391, DYS392, DYS393, DYS385, DYS437, DYS438, DYS439, DYS448, DYS456, DYS458, DYS635, and GATAH4) using DNA genome extracted from blood, hair root and finger nail samples of 205 unrelated men of Kinh population in the North and South of Vietnam. The studied population shows that a relatively close relationship between the Jiangxi (Han) and Jiangsu (Han) populations in China and the Han population in Taiwan. Compared to other population with geographic locations far removed from Vietnam and historically and culturally diverse, there are significant differences as with Americans (Rst = 0.3836, P <0.0001); The Germans (Rst = 0.3562, p = -1.0000); The Romans (Rst = 0.2918, p = -1.0000) or Ethiopian (Rst = 0.3139, p = -1.0000) and particularly significant differences with Nigerians (Rst = 0.5084, p = -1.0000). The genetic diversity indexes at each locus and the haplotypes were examined; Genetic distances between the King population in this study and neighboring populations and geographically remote populations are consistent with the migration history.  

Population genetics and phylogeography of the blue rockfish (Sebastes mystinus) from Washington to California

2004 ◽  
Vol 61 (3) ◽  
pp. 332-342 ◽  
Author(s):  
Jason M Cope
Keyword(s):  
Nucleotide Diversity ◽  
Haplotype Diversity ◽  
The United States ◽  
Genetic Distances ◽  
Mitochondrial Dna Control Region ◽  
Full Sequence ◽  
Biogeographic Barrier ◽  
To Come ◽  
Sebastes Mystinus ◽  
North And South

Blue rockfish (Sebastes mystinus) are a major component of nearshore ecology and fisheries on the west coast of the United States, but the extent of spatial structuring between localized populations is unknown. I sampled 245 blue rockfish at eight locations from Washington to California and sequenced a 498 base pair portion of the mitochondrial DNA control region to describe genetic diversity, population structure, and phylogeography. Haplotype diversity was high, but nucleotide diversity was low, indicating historically unstable population dynamics. Significantly high levels of population differentiation were detected among sample sites (maximum pairwise FST: full sequence = 0.25, reduced sequence = 0.74, P < 0.001), with a distinct break (ΦCT: full sequence = 0.12; reduced sequence = 0.36, P < 0.05) north and south of Cape Mendocino and no overall trend between geographic and genetic distances. Cape Mendocino may prove an important biogeographic barrier to other marine organisms, but it has not been extensively explored as such. The northern subpopulation derived from the southern subpopulation, but little contact has been made between the populations for potentially thousands of years. Therefore, repopulation of a depleted southern subpopulation is unlikely to come from the less-fished northern subpopulation.

Peromyscus populations and their Cuterebra parasites display congruent phylogeographical structure

Parasitology ◽  
2005 ◽  
Vol 131 (2) ◽  
pp. 237-245 ◽  
Author(s):  
S. NOËL ◽  
B. ANGERS ◽  
F.-J. LAPOINTE
Keyword(s):  
Parasite Species ◽  
Isolation By Distance ◽  
Deer Mouse ◽  
Genetic Distances ◽  
Limited Sample ◽  
The North ◽  
Mitochondrial Sequences ◽  
North And South ◽  
White Footed Mouse ◽  
St Lawrence River

The relationships between populations of the Deer Mouse (Peromyscus maniculatus) and the White-footed Mouse (P. leucopus) and their respective Cuterebra parasites were examined. Population genetic structure of hosts and parasites was inferred using cytochrome oxidase mitochondrial sequences of specimens from 7 populations. Genetic analyses revealed that isolation-by-distance applies for P. maniculatus and its associated parasite (C. grisea). A significant correlation was also observed between the genetic distances of these host and parasite species. Furthermore, populations of P. maniculatus and C. grisea from the North and South shores of the St Lawrence River were found to be significantly different. This structure may be explained by the St Lawrence River being a dispersal barrier for both species. A robust analysis of the other species pair (P. leucopus and C. fontinella) could not be performed because of limited sample sizes.

Metamorphic evolution and age constraints of the garnet-bearing mica schist from the Xindaduo area of the Sumdo (U)HP metamorphic belt, Tibet

2018 ◽  
Vol 156 (07) ◽  
pp. 1175-1189 ◽  
Author(s):  
CONG ZHANG ◽  
THOMAS BADER ◽  
LINGMIN ZHANG ◽  
TINGTING SHEN ◽  
PENG LI ◽  
...  
Keyword(s):  
Mica Schist ◽  
Metamorphic Belt ◽  
Metamorphic Evolution ◽  
Origin And Evolution ◽  
Lhasa Terrane ◽  
The North ◽  
Close Relationship ◽  
The Matrix ◽  
Tethys Ocean ◽  
North And South

AbstractAs one of the major components of the Himalayan–Tibetan Orogeny, the Lhasa terrane plays a key role in understanding the origin and evolution of this giant orogenic belt and the opening and closure of the Tethys oceans. The eclogite-bearing Sumdo Complex in the central Lhasa terrane was recognized as the main suture of the Palaeo-Tethys Ocean between the north and south Lhasa sub-terranes. Despite the eclogite having been studied for a long time, no attempts have been applied to studying the country rocks, causing confusion in understanding the relationship between the eclogite and the adjacent schist. Petrological investigations and phase equilibrium calculations on the garnet-bearing mica schist of the Sumdo Complex have been performed to constrain its metamorphic evolution. The P–T conditions for three metamorphic stages are constrained as P1 (480–500°C, 2.6–2.7 GPa), P2 (580–600°C, 1.3–1.4 GPa) and R (530°C, 0.9 GPa), which represent the prograde, temperature peak and retrograde stages. Two possible P–T paths were constructed, which experienced isothermal decompression (PT1) or heating with a decompression process (PT2), corresponding to the growth and extinction of garnet porphyroblasts in the matrix. The LA-MC-ICP-MS U–Pb dating method yielded a metamorphic age of 229.7±3.5 Ma, which was interpreted as the age of amphibolite-facies metamorphism at c. 600°C, 1.2–1.4 GPa during the closure of the Palaeo-Tethys Ocean, resulting in the aggregation of the north and south Lhasa sub-terranes. The close relationship between the eclogite and garnet-bearing mica schist, and their similar P–T–t paths indicate an in situ tectonic evolution rather than tectonic juxtaposition during exhumation.

scholarly journals GENETIC POLYMORPHISM OF 23 Y-CHROMOSOME SHORT TANDEM REPEAT LOCI IN THE KINH POPULATION OF VIETNAM

2018 ◽  
Vol 16 (2) ◽  
pp. 223-229
Author(s):  
Ha Huu Hao ◽  
Nguyen Duc Nhu ◽  
Chu Hoang Ha ◽  
Le Van Son ◽  
Le Tuan Anh ◽  
...  
Keyword(s):  
Y Chromosome ◽  
Tandem Repeats ◽  
Gene Diversity ◽  
Haplotype Diversity ◽  
Genetic Distances ◽  
Reference Database ◽  
Sample Population ◽  
Forensic Application ◽  
Str Loci ◽  
Short Tandem

Y-chromosome microsatellites or short tandem repeats (STRs) have been proved to be ideal markers to delineate the differences between individuals in human population. Nowadays, Y-STR testing using the PowerPlex® Y23 amplification kit is considered as an extremely sensitive analysis method and has the potential to be used to perform forensic caseworks, and to explore the complexity in population substructures. However, little is known about the forensic Y-chromosome databases in the Vietnam population. In this study, 23 Y-STR loci (DYS576, DYS389I, DYS389 II, DYS448, DYS19, DYS391, DYS481, DYS549, DYS533, DYS438, DYS437, DYS570, DYS635, DYS390, DYS439, DYS392, DYS393, DYS458 DYS456, DYS643, YGATAH4, and DYS385a/b) were investigated in 120 non-related males of the Kinh population in Northern Vietnam using PowerPlex® Y23 system kit (Promega). Our results showed that allele frequencies of 23 loci in the sample population, with the calculated average gene diversity (GD) for each locus, ranged from 0.24 (DYS438) to 0.92 (DYS385a/b). In addition, a total of 120 different haplotypes were found, all of them were unique. Therefore, we found that the haplotype diversity was 1 with a discrimination capacity of 100%, which serves as an essential prerequisite for using Y-chromosomal STR with PowerPlex® Y23 System kit in forensic application in Vietnam. We also compared genetic distances between Kinh population and 10 other neighboring populations from Y-chromosome haplotype reference database (YHRD). The Kinh population is significantly different from other populations. In conclusion, it was indicated that the 23 Y-STR loci were highly genetically polymorphic in the Kinh population in Vietnam and might be of great value in forensic application.

Preliminary results of the study on the reasons of the Hai Hau erosion phenomenon

2007 ◽  
Vol 29 (3) ◽  
pp. 415-426
Author(s):  
Pham Van Ninh ◽  
Phan Ngoc Vinh ◽  
Nguyen Manh Hung ◽  
Dinh Van Manh
Keyword(s):  
Mathematical Modeling ◽  
Historical Data ◽  
Middle Part ◽  
Red River ◽  
Erosion Process ◽  
Red River Delta ◽  
The North ◽  
Severe Erosion ◽  
North And South ◽  
Very High

Overall the evolution process of the Red River Delta based on the maps and historical data resulted in a fact that before the 20th century all the Nam Dinh coastline was attributed to accumulation. Then started the erosion process at Xuan Thuydistrict and from the period of 1935 - 1965 the most severe erosion was contributed in the stretch from Ha Lan to Hai Trieu, 1965 - 1990 in Hai Chinh - Hai Hoa, 1990 - 2005 in the middle part of Hai Chinh - Hai Thinh (Hai Hau district). The adjoining stretches were suffered from not severe erosion. At the same time, the Ba Lat mouth is advanced to the sea and to the North and South direction by the time with a very high rate.The first task of the mathematical modeling of coastal line evolution of Hai Hau is to evaluate this important historical marked periods e. g. to model the coastal line at the periods before 1900, 1935 - 1965; 1965 - 1990; 1990 - 2005. The tasks is very complicated and time and working labors consuming.In the paper, the primarily results of the above mentioned simulations (as waves, currents, sediments transports and bottom - coastal lines evolution) has been shown. Based on the obtained results, there is a strong correlation between the protrusion magnitude and the southward moving of the erosion areas.

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