scholarly journals The relevance of genetic structure in ecotype designation and conservation management

2021 ◽  
Author(s):  
Astrid V. Stronen ◽  
Anita J. Norman ◽  
Eric Vander Wal ◽  
Paul C. Paquet
Keyword(s):  
Genetic Structure ◽  
Conservation Management

Population genetic structure and dispersal of Pinus occidentalis in the Dominican Republic by chloroplastic SSR with implications for its conservation, management, and reforestation

2021 ◽  
Author(s):  
Luis E. Rodríguez de Francisco ◽  
Rosanna Carreras-De León ◽  
Rafael M. Navarro Cerrillo ◽  
Liz A. Paulino-Gervacio ◽  
María-Dolores Rey ◽  
...  
Keyword(s):  
Genetic Structure ◽  
Dominican Republic ◽  
Population Genetic Structure ◽  
Population Genetic ◽  
Conservation Management ◽  
Natural Populations ◽  
Limited Information ◽  
High Genetic Diversity ◽  
The Impact ◽  
Pinus Occidentalis

<i>Pinus occidentalis</i> is the dominant species of forest ecosystems in the Dominican Republic, located between 200 and 3000 meters above sea level, with extensive and overexploited natural populations. However, over the years, various restoration plans have been performed, which could affect the genetic structure of <i>P. occidentalis</i>. Despite being the species with the highest occurrence in the Dominican forests, there is no existing information on genetic structure and molecular characterization among natural populations with limited information on both phenological and productive characterization. In this study, the genetic structure, diversity, and gene flow of the five <i>P. occidentalis</i> natural populations of the Dominican Republic were determined using microsatellite markers. A total of 145 individuals were genotyped with eight polymorphic chloroplastic microsatellites, producing an average of 41 haplotypes with high genetic diversity across populations (H<sub>E</sub> = 0.90). Significant population genetic structure was found between populations (F<sub>ST</sub> = 0.123). These results reflect the impact of reforestation programs on natural populations and diluting the natural genetic signature. Analysis of population genetic data is, therefore, crucial for the breeding and conservation programs of <i>P. occidentalis</i> in the country.

Genetic diversity, Population Genetic Structure and Conservation Management of Spanish Verata Goat Breed

2020 ◽  
Vol 187 ◽  
pp. 106106
Author(s):  
M. Martínez-Trancón ◽  
J.C. Parejo ◽  
A. Rabasco ◽  
P. Padilla ◽  
J.A. Padilla
Keyword(s):  
Genetic Diversity ◽  
Genetic Structure ◽  
Population Genetic Structure ◽  
Population Genetic ◽  
Conservation Management ◽  
Goat Breed

Genetic structure of Leucojum aestivum L. in the Po Valley (N-Italy) drives conservation management actions

2018 ◽  
Vol 19 (4) ◽  
pp. 827-838 ◽  
Author(s):  
Rodolfo Gentili ◽  
Thomas Abeli ◽  
Gilberto Parolo ◽  
Silvia Ciappetta ◽  
Chiara Montagnani ◽  
...  
Keyword(s):  
Genetic Structure ◽  
Conservation Management ◽  
Po Valley ◽  
Management Actions ◽  
Leucojum Aestivum

Genetic structure and genetic diversity of the endangered grassland plant Crepis mollis (Jacq.) Asch. as a basis for conservation management in Germany

2017 ◽  
Vol 19 (3) ◽  
pp. 527-543
Author(s):  
Virginia K. Duwe ◽  
Ludo A. H. Muller ◽  
Katja Reichel ◽  
Elke Zippel ◽  
Thomas Borsch ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Genetic Structure ◽  
Conservation Management

Population genetic structure and conservation management of Retinta Extremeña goats

2015 ◽  
Vol 124 ◽  
pp. 9-16 ◽  
Author(s):  
J.C. Parejo ◽  
J.A. Padilla ◽  
R. Calero ◽  
M. Martínez-Trancón ◽  
E. Sansinforiano ◽  
...  
Keyword(s):  
Genetic Structure ◽  
Population Genetic Structure ◽  
Population Genetic ◽  
Conservation Management

Genetic structure and diversity of the black-throated finch (Poephila cincta) across its current range

2016 ◽  
Vol 64 (6) ◽  
pp. 375
Author(s):  
Lei Stanley Tang ◽  
Carolyn Smith-Keune ◽  
Anthony C. Grice ◽  
James M. Moloney ◽  
Britta Denise Hardesty
Keyword(s):  
Genetic Diversity ◽  
Genetic Structure ◽  
Genetic Differentiation ◽  
Standard Error ◽  
Conservation Management ◽  
Spatial Scales ◽  
Mitochondrial Control Region ◽  
Population Connectivity ◽  
Population Declines ◽  
Genetic Structure And Diversity

Understanding the patterns of population connectivity and level of genetic diversity can facilitate the identification of both ecologically relevant populations and the spatial scales at which conservation management may need to focus. We quantified genetic variation within and among populations of black-throated finches across their current distribution. To quantify genetic structure and diversity, we genotyped 242 individuals from four populations using 14 polymorphic microsatellite markers and sequenced 25 individuals based on a 302-base-pair segment of mitochondrial control region. We found modest levels of genetic diversity (average allelic richness r = 4.37 ± 0.41 (standard error) and average heterozygosity HO = 0.42 ± 0.040 (standard error)) with no bottleneck signature among sampled populations. We identified two genetic groups that represent populations of two subspecies based on Bayesian clustering analysis and low levels of genetic differentiation based on pairwise genetic differentiation statistics (all FST, RST and Nei’s unbiased D values <0.1). Our data suggest that genetic exchange occurs among sampled populations despite recent population declines. Conservation efforts that focus on maintaining habitat connectivity and increasing habitat quality to ensure a high level of gene flow on a larger scale will improve the species’ ability to persist in changing landscapes. Conservation management should also support continuous monitoring of the bird to identify any rapid population declines as land-use intensification occurs throughout the species’ range.

scholarly journals Population genetic structure and conservation management of hill pigeons (Columba rupestris) recently endangered in South Korea

2022 ◽  
Author(s):  
Jin-Yong Kim ◽  
Soo Hyung Eo ◽  
Seung-Gu Kang ◽  
Jung Eun Hwang ◽  
Yonggu Yeo ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Genetic Structure ◽  
South Korea ◽  
Conservation Management ◽  
Haplotype Network ◽  
Low Genetic Diversity ◽  
Management Procedures ◽  
In Captivity ◽  
Captive Propagation ◽  
Domestic Pigeons

Abstract Background Hill pigeons (Columba rupestris) are close to local extinction (ca. less than 100 individuals) in South Korea where a variety of conservation management procedures are urgently required. Objective This study was aimed at determining the conservation direction of captive propagation and reintroduction of hill pigeons using genetic information based on mitochondrial DNA. We also evaluated the extent of hybridization between hill pigeons and cohabiting domestic pigeons. Methods We used 51 blood samples of hill pigeons from Goheung (GH), Gurye (GR), and Uiryeong (UR), and domestic pigeons cohabiting with hill pigeon populations. Genetic diversity, pairwise Fst, analysis of molecular variance, and haplotype network analysis were used to examine the genetic structure of hill pigeons. Results Hill pigeons that inhabited South Korea were not genetically distinct from Mongolian and Russian populations and showed relatively low genetic diversity compared with other endangered species in Columbidae. The GR population that exhibited the largest population size showed lower genetic diversity, compared to the other populations, although the pairwise Fst values of the three populations indicated low genetic differentiation. The GH and GR populations were confirmed to lack hybridization, relatively, whereas the UR population was found to exhibit some degrees of hybridization. Conclusion To conserve hill pigeons with low genetic diversity and differentiation in South Korea, the conservation process of captive propagation and reintroduction may require artificial gene flows among genetically verified populations in captivity and wildness. The introduction of foreign individuals from surrounding countries is also considered an alternative strategy for maintaining genetic diversity.

A multilocus comparative study of dispersal in three codistributed demersal sharks from eastern Australia

2016 ◽  
Vol 73 (3) ◽  
pp. 406-415 ◽  
Author(s):  
Shannon Corrigan ◽  
Charlie Huveneers ◽  
Adam Stow ◽  
Luciano B. Beheregaray
Keyword(s):  
Genetic Structure ◽  
Fragment Length Polymorphism ◽  
Conservation Management ◽  
Spatial Genetic Structure ◽  
Molecular Data ◽  
Population Connectivity ◽  
Comparative Approach ◽  
Dispersal Patterns ◽  
Eastern Australia ◽  
Demersal Species

Demersal elasmobranchs are ecologically important mesopredators but little is known about their population connectivity or dispersal patterns. Here we use a comparative approach based on mitochondrial DNA and nuclear amplified fragment length polymorphism (AFLP) markers to examine spatial genetic structure and dispersal in three closely related demersal elasmobranchs from eastern Australia: Orectolobus halei, Orectolobus maculatus, and Orectolobus ornatus. We found evidence of significant spatial genetic structure, possibly indicating regional philopatry in wobbegongs. The molecular data also indicate that dispersal in wobbegongs may be sex-biased. This represents the first genetic study of dispersal and population connectivity in codistributed demersal sharks. It provides insights into the ecology of dispersal behaviours with implications for conservation management of demersal species.

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