scholarly journals Genetic diversity and population history of the Killarney fern,Vandenboschia speciosa(Hymenophyllaceae), at its southern distribution limit in continental Europe

2016 ◽  
Author(s):  
Samira Ben-Menni Schuler ◽  
María del Carmen García-López ◽  
Inmaculada López-Flores ◽  
Marta Nieto-Lugilde ◽  
Víctor N. Suárez-Santiago
Keyword(s):  
Genetic Diversity ◽  
Population History ◽  
Distribution Limit ◽  
History Of

scholarly journals Population structure and demographic history of the chukar partridge Alectoris chukar in China

2013 ◽  
Vol 59 (4) ◽  
pp. 458-474 ◽  
Author(s):  
Sen Song ◽  
Shijie Bao ◽  
Ying Wang ◽  
Xinkang Bao ◽  
Bei An ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Gene Flow ◽  
North America ◽  
Demographic History ◽  
Population Expansion ◽  
Northwest China ◽  
Population History ◽  
Extant Species ◽  
History Of ◽  
Chukar Partridge

Abstract Pleistocene climate fluctuations have shaped the patterns of genetic diversity observed in extant species. Although the effects of recent glacial cycles on genetic diversity have been well studied on species in Europe and North America, genetic legacy of species in the Pleistocene in north and northwest of China where glaciations was not synchronous with the ice sheet development in the Northern Hemisphere or or had little or no ice cover during the glaciations’ period, remains poorly understood. Here we used phylogeographic methods to investigate the genetic structure and population history of the chukar partridge Alec-toris chukar in north and northwest China. A 1,152 – 1,154 bp portion of the mtDNA CR were sequenced for all 279 specimens and a total number of 91 haplotypes were defined by 113 variable sites. High levels of gene flow were found and gene flow estimates were greater than 1 for most population pairs in our study. The AMOVA analysis showed that 81% and 16% of the total genetic variability was found within populations and among populations within groups, respectively. The demographic history of chukar was examined using neutrality tests and mismatch distribution analyses and results indicated Late Pleistocene population expansion. Results revealed that most populations of chukar experienced population expansion during 0.027 ? 0.06 Ma. These results are at odds with the results found in Europe and North America, where population expansions occurred after Last Glacial Maximum (LGM, 0.023 to 0.018 Ma). Our results are not consistent with the results from avian species of Tibetan Plateau, either, where species experienced population expansion following the retreat of the extensive glaciation period (0.5 to 0.175 Ma).

Gene flow from multiple sources maintains high genetic diversity and stable population history of Common MoorhenGallinula chloropusin China

Ibis ◽  
2018 ◽  
Vol 160 (4) ◽  
pp. 855-869 ◽  
Author(s):  
Luzhang Ruan ◽  
Wei Xu ◽  
Yuqing Han ◽  
Chaoying Zhu ◽  
Bicai Guan ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Gene Flow ◽  
Population History ◽  
Stable Population ◽  
Multiple Sources ◽  
High Genetic Diversity ◽  
History Of

scholarly journals Genetic Diversity and Population History of a Critically Endangered Primate, the Northern Muriqui (Brachyteles hypoxanthus)

PLoS ONE ◽  
2011 ◽  
Vol 6 (6) ◽  
pp. e20722 ◽  
Author(s):  
Paulo B. Chaves ◽  
Clara S. Alvarenga ◽  
Carla de B. Possamai ◽  
Luiz G. Dias ◽  
Jean P. Boubli ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Population History ◽  
Critically Endangered ◽  
History Of

scholarly journals Hominoid intraspecific cranial variation mirrors neutral genetic diversity

2018 ◽  
Vol 115 (45) ◽  
pp. 11501-11506 ◽  
Author(s):  
Julia M. Zichello ◽  
Karen L. Baab ◽  
Kieran P. McNulty ◽  
Christopher J. Raxworthy ◽  
Michael E. Steiper
Keyword(s):  
Genetic Diversity ◽  
Homo Sapiens ◽  
Population History ◽  
Cranial Morphology ◽  
Shape Variation ◽  
Evolutionary Processes ◽  
Cranial Variation ◽  
History Of ◽  
Fossil Hominin ◽  
Cranial Shape

Natural selection, developmental constraint, and plasticity have all been invoked as explanations for intraspecific cranial variation in humans and apes. However, global patterns of human cranial variation are congruent with patterns of genetic variation, demonstrating that population history has influenced cranial variation in humans. Here we show that this finding is not unique toHomo sapiensbut is also broadly evident across extant ape species. Specifically, taxa that exhibit greater intraspecific cranial shape variation also exhibit greater genetic diversity at neutral autosomal loci. Thus, cranial shape variation within hominoid taxa reflects the population history of each species. Our results suggest that neutral evolutionary processes such as mutation, gene flow, and genetic drift have played an important role in generating cranial variation within species. These findings are consistent with previous work on human cranial morphology and improve our understanding of the evolutionary processes that generate intraspecific cranial shape diversity within hominoids. This work has implications for the analysis of selective and developmental pressures on the cranium and for interpreting shape variation in fossil hominin crania.

Genetic Diversity and Demographic History of an Upper Hill Dipterocarp (Shorea platyclados): Implications for Conservation

2019 ◽  
Vol 110 (7) ◽  
pp. 844-856 ◽  
Author(s):  
Chin-Hong Ng ◽  
Soon-Leong Lee ◽  
Lee-Hong Tnah ◽  
Kevin K S Ng ◽  
Chai-Ting Lee ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Microsatellite Loci ◽  
Gene Diversity ◽  
Demographic History ◽  
Haplotype Diversity ◽  
Population History ◽  
Conservation Strategy ◽  
Ex Situ ◽  
History Of ◽  
Shorea Platyclados

Abstract Southeast Asian rainforests at upper hill elevations are increasingly vulnerable to degradation because most lowland forest areas have been converted to different land uses. As such, understanding the genetics of upper hill species is becoming more crucial for their future management and conservation. Shorea platyclados is an important, widespread upper hill dipterocarp in Malaysia. To elucidate the genetic structure of S. platyclados and ultimately provide guidelines for a conservation strategy for this species, we carried out a comprehensive study of the genetic diversity and demographic history of S. platyclados. Twenty-seven populations of S. platyclados across its range in Malaysia were genotyped at 15 polymorphic microsatellite loci and sequenced at seven noncoding chloroplast DNA (cpDNA) regions. A total of 303 alleles were derived from the microsatellite loci, and 29 haplotypes were identified based on 2892 bp of concatenated cpDNA sequences. The populations showed moderately high genetic diversity (mean HE = 0.680 for microsatellite gene diversity and HT = 0.650 for total haplotype diversity) and low genetic differentiation (FST = 0.060). Bayesian clustering divided the studied populations into two groups corresponding to western and eastern Malaysia. Bottleneck analysis did not detect any recent bottleneck events. Extended Bayesian skyline analyses showed a model of constant size for the past population history of this species. Based on our findings, priority areas for in situ and ex situ conservation and a minimum population size are recommended for the sustainable utilization of S. platyclados.

scholarly journals Population history of the terrestrial orchidCremastra appendiculatavar.variabilisfrom Korea, inferred from levels and distribution of genetic diversity

2013 ◽  
Vol 173 (4) ◽  
pp. 721-732 ◽  
Author(s):  
Mi Yoon Chung ◽  
Jordi López-Pujol ◽  
Myung-Ok Moon ◽  
Masayuki Maki ◽  
Tomohisa Yukawa ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Population History ◽  
History Of

Origin, Genetic Diversity, and Population History of a Marine Population (Chanidae: Chanos chanos) in an Enclosed Lagoon in French Polynesia

2018 ◽  
Vol 72 (2) ◽  
pp. 223-231 ◽  
Author(s):  
Erwan Delrieu-Trottin ◽  
Valentina Neglia ◽  
Magali Verducci ◽  
Serge Planes
Keyword(s):  
Genetic Diversity ◽  
French Polynesia ◽  
Population History ◽  
Chanos Chanos ◽  
Marine Population ◽  
History Of
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