scholarly journals Restricted Gene Flow for Gadus macrocephalus from Yellow Sea Based on Microsatellite Markers: Geographic Block of Tsushima Current

2016 ◽  
Vol 17 (4) ◽  
pp. 467 ◽  
Author(s):  
Na Song ◽  
Ming Liu ◽  
Takashi Yanagimoto ◽  
Yasunori Sakurai ◽  
Zhi-Qiang Han ◽  
...  
Keyword(s):  
Gene Flow ◽  
Microsatellite Markers ◽  
Yellow Sea ◽  
Restricted Gene Flow ◽  
Tsushima Current ◽  
Gadus Macrocephalus

Restricted gene flow in fragmented populations of a wind-pollinated tree

2007 ◽  
Vol 9 (6) ◽  
pp. 1521-1532 ◽  
Author(s):  
Jim Provan ◽  
Gemma E. Beatty ◽  
Andrea M. Hunter ◽  
Robbie A. McDonald ◽  
Emma McLaughlin ◽  
...  
Keyword(s):  
Gene Flow ◽  
Restricted Gene Flow ◽  
Fragmented Populations

Gene flow and mating system in five Cryptomeria japonica D. Don seed orchards as revealed by analysis of microsatellite markers

2005 ◽  
Vol 1 (4) ◽  
pp. 174-183 ◽  
Author(s):  
Yoshinari Moriguchi ◽  
Naoki Tani ◽  
Sinji Itoo ◽  
Fuminori Kanehira ◽  
Kouji Tanaka ◽  
...  
Keyword(s):  
Gene Flow ◽  
Microsatellite Markers ◽  
Mating System ◽  
Cryptomeria Japonica ◽  
Seed Orchards

scholarly journals Microsatellite development via next-generation sequencing in Acacia stenophylla (Fabaceae) and Duma florulenta (Polygonaceae): two ecologically important plant species of Australian dryland floodplains

2018 ◽  
Author(s):  
Bruce F Murray ◽  
Michael A Reid ◽  
Shu-Biao Wu
Keyword(s):  
Gene Flow ◽  
Next Generation Sequencing ◽  
Microsatellite Markers ◽  
Information Content ◽  
Polymorphic Information Content ◽  
Extreme Variability ◽  
Polymorphic Microsatellite ◽  
Generation Sequencing ◽  
Semi Arid

Duma florulenta and Acacia stenophylla are two ecologically important but understudied species that naturally occur on the floodplains and riverbanks of Australia’s arid and semi-arid river systems. This paper describes the discovery and characterization of 12 and 13 polymorphic microsatellite markers for D. florulenta and A. stenophylla respectively. The number of alleles per locus for D. florulenta ranged from 2-12 with an average of 6.1. Across all samples, observed and expected heterozygosities ranged from 0.026 to 0.784 and 0.026 to 0.824 respectively and mean polymorphic information content was equal to 0.453. For A. stenophylla, the number of alleles per locus ranged between 2 and 8 with an overall mean of 4.8. Across all samples, observed and expected heterozygosities ranged from 0.029 to 0.650 and 0.029 to 0.761 respectively and mean polymorphic information content was 0.388. The developed suites of 12 and 13 microsatellite markers for D. florulenta and A. stenophylla respectively provide opportunity for novel research into mechanisms of gene flow, dispersal and breeding system and how they operate under the extreme variability these species are exposed to in the environments in which they live.

scholarly journals Population Genetics of the Red Rock Lobster,  Jasus edwardsii

2021 ◽  
Author(s):  
◽  
Luke Thomas
Keyword(s):  
Population Structure ◽  
Gene Flow ◽  
New Zealand ◽  
Genetic Differentiation ◽  
Microsatellite Markers ◽  
Rocky Reef ◽  
Rock Lobster ◽  
Wide Range ◽  
Jasus Edwardsii ◽  
Polymorphic Microsatellite

<p>Understanding patterns of gene flow across a species range is a vital component of an effective fisheries management strategy. The advent of highly polymorphic microsatellite markers has facilitated the detection of fine-scale patterns of genetic differentiation at levels below the resolving power of earlier techniques. This has triggered the wide-spread re-examination of population structure for a number of commercially targeted species. The aims of thesis were to re-investigate patterns of gene flow of the red rock lobster Jasus edwardsii throughout New Zealand and across the Tasman Sea using novel microsatellite markers. Jasus edwardsii is a keystone species of subtidal rocky reef system and supports lucrative export markets in both Australia and New Zealand. Eight highly polymorphic microsatellite markers were developed from 454 sequence data and screened across a Wellington south coast population to obtain basic diversity indices. All loci were polymorphic with the number of alleles per locus ranging from 6-39. Observed and expected heterozygosity ranged from 0.563-0.937 and 0.583-0.961, respectively. There were no significant deviations from Hardy-Weinberg equilibrium following standard Bonferroni corrections. The loci were used in a population analysis of J. edwardsii that spanned 10 degrees of latitude and stretched 3,500 km across the South Pacific. The analysis rejected the null-hypothesis of panmixia based on earlier mDNA analysis and revealed significant population structure (FST=0.011, RST=0.028) at a wide range of scales. Stewart Island was determined to have the highest levels of genetic differentiation of all populations sampled suggesting a high degree of reproductive isolation and self-recruitment. This study also identified high levels of asymmetric gene flow from Australia to New Zealand indicating a historical source-sink relationship between the two countries. Results from the genetic analysis were consistent with results from oceanographic dispersal models and it is likely that the genetic results reflect historical and contemporary patterns of Jasus edwardsii dispersal and recruitment throughout its range.</p>

The Coalescent in a Continuous, Finite, Linear Population

Genetics ◽  
2002 ◽  
Vol 161 (2) ◽  
pp. 873-888
Author(s):  
Jon F Wilkins ◽  
John Wakeley
Keyword(s):  
Genetic Diversity ◽  
Gene Flow ◽  
Simulated Data ◽  
Restricted Gene Flow ◽  
Demographic Parameters ◽  
Common Ancestry ◽  
Linear Habitat ◽  
Mean Time ◽  
Finite Linear

Abstract In this article we present a model for analyzing patterns of genetic diversity in a continuous, finite, linear habitat with restricted gene flow. The distribution of coalescent times and locations is derived for a pair of sequences sampled from arbitrary locations along the habitat. The results for mean time to coalescence are compared to simulated data. As expected, mean time to common ancestry increases with the distance separating the two sequences. Additionally, this mean time is greater near the center of the habitat than near the ends. In the distant past, lineages that have not undergone coalescence are more likely to have been at opposite ends of the population range, whereas coalescent events in the distant past are biased toward the center. All of these effects are more pronounced when gene flow is more limited. The pattern of pairwise nucleotide differences predicted by the model is compared to data collected from sardine populations. The sardine data are used to illustrate how demographic parameters can be estimated using the model.

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