scholarly journals The level of genetic diversity and differentiation of mountain hare Lepus timidus population in Karelia

2012 ◽  
Vol 10 (3) ◽  
pp. 17-21
Author(s):  
Ludmila V Topchieva ◽  
Vladimir V Belkin ◽  
Nikolay L Rendakov ◽  
Irina E Malysheva ◽  
Sergey N Kolomeychuk
Keyword(s):  
Genetic Diversity ◽  
Genetic Differentiation ◽  
Mountain Hare ◽  
Lepus Timidus ◽  
First Time ◽  
Hare Population ◽  
Selection Of

The level of genetic diversity of mountain hare Lepus timidus was assessed in Karelia for the first time. A significant remainder was revealed after substraction of Но value from Не, which value indicates the predominant selection of homozygotes rather than heterozygotes and the occurrence of inbreeding in the groups under study. The Fst value equal to 0.133 was calculated for the animals from different regions and indicates their genetic differentiation, which allows distinguishing subpopulation groups in mountain hare population.

scholarly journals Genetic Diversity and Natural Selection of Plasmodium vivax Duffy Binding Protein-II From China-Myanmar Border of Yunnan Province, China

2021 ◽  
Vol 12 ◽  
Author(s):  
Tian-Qi Shi ◽  
Hai-Mo Shen ◽  
Shen-Bo Chen ◽  
Kokouvi Kassegne ◽  
Yan-Bing Cui ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Population Structure ◽  
Natural Selection ◽  
Genetic Differentiation ◽  
Positive Selection ◽  
Plasmodium Vivax ◽  
Yunnan Province ◽  
Duffy Binding Protein ◽  
Synonymous Mutations ◽  
Selection Of

Malaria incidence has declined dramatically over the past decade and China was certified malaria-free in 2021. However, the presence of malaria in border areas and the importation of cases of malaria parasites are major challenges for the consolidation of the achievements made by China. Plasmodium vivax Duffy binding protein (PvDBP) performs a significant role in erythrocyte invasion, and is considered a promising P. vivax vaccine. However, the highly polymorphic region of PvDBP (PvDBP-II) impedes the development of blood-stage vaccine against P. vivax. In this study, we investigated the genetic diversity and natural selection of PvDBP-II among 124 P. vivax isolates collected from the China-Myanmar border (CMB) in Yunnan Province, China, during 2009–2011. To compare genetic diversity, natural selection, and population structure with CMB isolates, 85 pvdbp-II sequences of eastern Myanmar isolates were obtained from GenBank. In addition, global sequences of pvdbp-II were retrieved from GenBank to establish genetic differentiation relationships and networks with the CMB isolates. In total, 22 single nucleotide polymorphisms reflected in 20 non-synonymous and two synonymous mutations were identified. The overall nucleotide diversity of PvDBP-II from the 124 CMB isolates was 0.0059 with 21 haplotypes identified (Hd = 0.91). The high ratio of non-synonymous to synonymous mutations suggests that PvDBP-II had evolved under positive selection. Population structure analysis of the CMB and eastern Myanmar isolates were optimally grouped into five sub-populations (K = 5). Polymorphisms of PvDBP-II display that CMB isolates were genetically diverse. Mutation, recombination, and positive selection promote polymorphism of PvDBP-II of P. vivax population. Although low-level genetic differentiation in eastern Myanmar was identified along with the more effective malaria control measures, the complexity of population structure in malaria parasites has maintained. In conclusion, findings from this study advance knowledge of the understanding of the dynamic of P. vivax population, which will contribute to guiding the rational design of a PvDBP-II based vaccine.

The occurrence and abundance of helminth parasites of the mountain hare Lepus timidus (L.) and the wild rabbit Oryctolagus cuniculus (L.) in Aberdeenshire, Scotland

1986 ◽  
Vol 60 (2) ◽  
pp. 92-98 ◽  
Author(s):  
B. Boag ◽  
G. Iason
Keyword(s):  
Oryctolagus Cuniculus ◽  
Wild Rabbit ◽  
Helminth Parasites ◽  
Intestinal Helminths ◽  
British Isles ◽  
Cestode Species ◽  
Seasonal Fluctuations ◽  
Mountain Hare ◽  
Lepus Timidus ◽  
First Time

ABSTRACTMountain hares were collected each month between April 1984 and March 1985 and their intestines examined for helminths. 26 rabbits were also collected between Juny and December 1984 and examined for gastro-intestinal helminths. Three nematode and two cestode species were found in the hares while only two nematode and one cestode species were found in the rabbits. Trichostronglylus retortaeformis was recorded form 88% of the 193 hares and 92% of the rabbits While comparable figures for Passalurus ambiguus were 0·5% and 54% and for Mosgovoyia pectinata 14% and 81%. Seasonal fluctuations were observed in the T. retortaeformis populations in the hare; numbers tended to be low during the winter months and high throughout the summer. Paranoplocephala wimerosa was reported for the first time from the British Isles and Trichostrongylus axei was recorded for the forst time in the mountain hare.

The genetic diversity and differentiation in the mountain hare (Lepus timidus) population of Karelia

2013 ◽  
Vol 3 (5) ◽  
pp. 378-381
Author(s):  
L. V. Topchieva ◽  
V. V. Belkin ◽  
N. L. Rendakov ◽  
I. E. Malysheva ◽  
S. N. Kolomeichuk
Keyword(s):  
Genetic Diversity ◽  
Mountain Hare ◽  
Lepus Timidus

Alpine glacial relict species losing out to climate change: The case of the fragmented mountain hare population (Lepus timidus ) in the Alps

2018 ◽  
Vol 24 (7) ◽  
pp. 3236-3253 ◽  
Author(s):  
Maik Rehnus ◽  
Kurt Bollmann ◽  
Dirk R. Schmatz ◽  
Klaus Hackländer ◽  
Veronika Braunisch
Keyword(s):  
Climate Change ◽  
Mountain Hare ◽  
Relict Species ◽  
Lepus Timidus ◽  
The Alps ◽  
Glacial Relict ◽  
Hare Population

scholarly journals Genetic Diversity of Eight Domestic Goat Populations Raised in Turkey

2016 ◽  
Vol 2016 ◽  
pp. 1-6 ◽  
Author(s):  
Zafer Bulut ◽  
Ercan Kurar ◽  
Yusuf Ozsensoy ◽  
Vahdettin Altunok ◽  
Mehmet Nizamlioglu
Keyword(s):  
Genetic Diversity ◽  
Molecular Markers ◽  
Genetic Differentiation ◽  
Structure Analysis ◽  
Genetic Data ◽  
Assignment Test ◽  
Domestic Goat ◽  
First Time

The objective of this study was to determine the intra- and intergenetic diversities of eight different goat populations in Turkey including Hair, Angora, Kilis, Yayladag, Shami, Honamli, Saanen, and Alpine. A total of 244 DNA samples were genotyped using 11 microsatellites loci. The genetic differentiation between breeds was considerable as a result of the statistically significant (P<0.001) pairwiseFSTvalues of each pair of breeds. Exceptionally,FSTvalues calculated for Honamli and Hair breeds were statistically nonsignificant (P>0.05). Heterozygosity values ranged between 0.62 and 0.73. According to the structure and assignment test, Angora and Yayladag goats were assigned to the breed they belong to, while other breeds were assigned to two or more different groups. Because this study for the first time presented genetic data on the Yayladag goat, results of structure analysis and assigned test suggest that further analyses are needed using additional and different molecular markers.

Competition of Verb Aspects and Its Resolution as a Creative Act (Based on the Material of Aspects Variants in the Texts by F. M. Dostoevsky)

2020 ◽  
Vol 81 (2) ◽  
pp. 56-63
Author(s):  
S. A. Karpukhin
Keyword(s):  
Traditional Method ◽  
Contextual Analysis ◽  
Verb Aspect ◽  
Component Theory ◽  
Two Component ◽  
Artistic Interpretation ◽  
New Perspective ◽  
First Time ◽  
Selection Of ◽  
Aspectual Meaning

The article considers the competition of verbal aspects from a new perspective. Instead of employing the traditional method of demonstrating this phenomenon — an empirical replacement of the aspect of a verb in a phrase with the opposite — the author examines Dostoevsky’s choice between the variants found in different manuscripts of the same text. For the first time, based on a two-component theory of the semantic invariant of a verb type, the aspectual meaning of the selection of a verb aspect is revealed and, as a result of contextual analysis, an artistic interpretation of the selected type is proposed.

Peculiarities of the juvenile period of the native Chechen genotypes of willow leaf pear (Pyrus salicifolia Pall.)

2020 ◽  
Vol 62 ◽  
pp. 32-38
Author(s):  
E. A. Dolmatov ◽  
R. B. Borzayev ◽  
A. N. Shaipov
Keyword(s):  
Chestnut Soil ◽  
Crop Breeding ◽  
Juvenile Period ◽  
Period 2 ◽  
Russian Research Institute ◽  
The Common ◽  
One Year ◽  
First Time ◽  
Selection Of ◽  
Creative Cooperation

The results of the study of the duration of the juvenile period of indigenous Chechen willow leaf pear genotypes (Pyrus salicifolia Pall.) are given in connection with the acceleration of the breeding process and the use of selected forms in pear breeding for high precocity. The studies were carried out in 2016-2019 at OOO “Orchards of Chechnya” in accordance with the Agreement on creative cooperation with the Russian Research Institute of Fruit Crop Breeding. The work was carried out in accordance with generally accepted programs and methods. The objects of the study were one-year and two-year-old pear seedlings obtained from sowing seeds of selected dwarf and low-growing local Chechen forms of willow pear (P. salicifolia Pall.), laying fruit buds on annual growths and seedlings of Caucasian pear (P. caucasica Fed.), 20 500 pcs. of each specie. The aim of the research was to study the potential of precocity of willow pear seedlings and to reveal of selected forms with the greatest degree of this trait. Stratified seeds were sown in the sowing department of the OOO “Orchards of Chechnya” production nursery in April, 2017. The seedlings were grown according to the common technology in dryland conditions on the plot with chestnut soil. The first fl owering of plants was noted in the spring, 2019. As a result of the research, for the first time on a large number of the experimental material it was found that in the off spring of the indigenous Chechen willow leaf pear genotypes, the selection of a little more than 2% of seedlings with a very short juvenile period (2 years) was possible. They are of great interest in accelerating the breeding process and in the selection of new pear varieties with high precocity. 20 willow leaf pear genotypes were selected for the further use in breeding for high precocity and as sources of the trait of short juvenile period.

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