Population genetics and demographic history of the ice goby (Leucopsarion petersii) in the Northwest Pacific

2022 ◽  
Author(s):  
Yi-Jung Kim ◽  
Jung-Goo Myoung ◽  
Jin-Koo Kim
Keyword(s):  
Population Genetics ◽  
Demographic History ◽  
Northwest Pacific ◽  
History Of

scholarly journals Low Nucleotide Diversity in Chimpanzees and Bonobos

Genetics ◽  
2003 ◽  
Vol 164 (4) ◽  
pp. 1511-1518 ◽  
Author(s):  
Ning Yu ◽  
Michael I Jensen-Seaman ◽  
Leona Chemnick ◽  
Judith R Kidd ◽  
Amos S Deinard ◽  
...  
Keyword(s):  
Nucleotide Diversity ◽  
Nuclear Dna ◽  
Demographic History ◽  
Nuclear Genome ◽  
Limited Data ◽  
Effective Population ◽  
East Central ◽  
Dna Diversity ◽  
History Of ◽  
Mtdna Diversity

Abstract Comparison of the levels of nucleotide diversity in humans and apes may provide much insight into the mechanisms of maintenance of DNA polymorphism and the demographic history of these organisms. In the past, abundant mitochondrial DNA (mtDNA) polymorphism data indicated that nucleotide diversity (π) is more than threefold higher in chimpanzees than in humans. Furthermore, it has recently been claimed, on the basis of limited data, that this is also true for nuclear DNA. In this study we sequenced 50 noncoding, nonrepetitive DNA segments randomly chosen from the nuclear genome in 9 bonobos and 17 chimpanzees. Surprisingly, the π value for bonobos is only 0.078%, even somewhat lower than that (0.088%) for humans for the same 50 segments. The π values are 0.092, 0.130, and 0.082% for East, Central, and West African chimpanzees, respectively, and 0.132% for all chimpanzees. These values are similar to or at most only 1.5 times higher than that for humans. The much larger difference in mtDNA diversity than in nuclear DNA diversity between humans and chimpanzees is puzzling. We speculate that it is due mainly to a reduction in effective population size (Ne) in the human lineage after the human-chimpanzee divergence, because a reduction in Ne has a stronger effect on mtDNA diversity than on nuclear DNA diversity.

scholarly journals Corrigendum to: Demographic history of the human commensal Drosophila melanogaster

2021 ◽  
Vol 13 (3) ◽  
Author(s):  
J Roman Arguello ◽  
Stefan Laurent ◽  
Andrew G Clark
Keyword(s):  
Drosophila Melanogaster ◽  
Demographic History ◽  
History Of

scholarly journals Reference genome and demographic history of the most endangered marine mammal, the vaquita

2020 ◽  
Author(s):  
Phillip A. Morin ◽  
Frederick I. Archer ◽  
Catherine D. Avila ◽  
Jennifer R. Balacco ◽  
Yury V. Bukhman ◽  
...  
Keyword(s):  
Marine Mammal ◽  
Reference Genome ◽  
Demographic History ◽  
History Of

scholarly journals Temporal fluctuations of Y-chromosomal variation in Bos taurus

2008 ◽  
Vol 4 (6) ◽  
pp. 752-754 ◽  
Author(s):  
Emma Svensson ◽  
Anders Götherström
Keyword(s):  
Single Nucleotide Polymorphism ◽  
Bos Taurus ◽  
Demographic History ◽  
Northern Europe ◽  
Chromosomal Gene ◽  
Chromosomal Variation ◽  
Nucleotide Polymorphism ◽  
Single Nucleotide ◽  
Domestic Species ◽  
History Of

Phylogeography has recently become more abundant in studies of demographic history of both wild and domestic species. A single nucleotide polymorphism (SNP) in the intron of the Y-chromosomal gene UTY19 displays a north–south gradient in modern cattle. Support for this geographical distribution of haplogroups has previously also been seen in ancient cattle from Germany. However, when analysing 38 historic remains of domestic bulls and three aurochs from northern Europe for this SNP we found no such association. Instead, we noted extensive amounts of temporal variation that can be attributed to transportation of cattle and late breed formation.

Phylogeographic structure and gene flow of Himalayan snowcock (Tetraogallus himalayensis)

2010 ◽  
Vol 60 (4) ◽  
pp. 449-465
Author(s):  
Wen Longying ◽  
Zhang Lixun ◽  
An Bei ◽  
Luo Huaxing ◽  
Liu Naifa ◽  
...  
Keyword(s):  
Demographic History ◽  
Phylogenetic Analyses ◽  
Divergence Time ◽  
Population Expansion ◽  
Population History ◽  
Tibet Plateau ◽  
Phylogeographic Structure ◽  
Mitochondrial Cytochrome B ◽  
History Of ◽  
Qinghai Tibet Plateau

AbstractWe have used phylogeographic methods to investigate the genetic structure and population history of the endangered Himalayan snowcock (Tetraogallus himalayensis) in northwestern China. The mitochondrial cytochrome b gene was sequenced of 102 individuals sampled throughout the distribution range. In total, we found 26 different haplotypes defined by 28 polymorphic sites. Phylogenetic analyses indicated that the samples were divided into two major haplogroups corresponding to one western and one eastern clade. The divergence time between these major clades was estimated to be approximately one million years. An analysis of molecular variance showed that 40% of the total genetic variability was found within local populations, 12% among populations within regional groups and 48% among groups. An analysis of the demographic history of the populations suggested that major expansions have occurred in the Himalayan snowcock populations and these correlate mainly with the first and the second largest glaciations during the Pleistocene. In addition, the data indicate that there was a population expansion of the Tianshan population during the uplift of the Qinghai-Tibet Plateau, approximately 2 million years ago.

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