scholarly journals Population genetic structure of Adélie penguins (Pygoscelis adeliae) from Inexpressible Island, Antarctica, using SNP markers

2019 ◽  
Vol 27 (12) ◽  
pp. 1291-1297
Author(s):  
Zhang Jian ◽  
Dong Lu ◽  
Zhang Yanyun ◽  
Keyword(s):  
Genetic Structure ◽  
Population Genetic Structure ◽  
Population Genetic ◽  
Snp Markers ◽  
Pygoscelis Adeliae ◽  
Adélie Penguins

Population genetic structure and gene flow of Adélie penguins (Pygoscelis adeliae) breeding throughout the western Antarctic Peninsula

2017 ◽  
Vol 29 (6) ◽  
pp. 499-510 ◽  
Author(s):  
Kristen B. Gorman ◽  
Sandra L. Talbot ◽  
Sarah A. Sonsthagen ◽  
George K. Sage ◽  
Meg C. Gravely ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Gene Flow ◽  
Genetic Structure ◽  
Antarctic Peninsula ◽  
Population Genetic Structure ◽  
Population Genetic ◽  
Spatial Genetic Structure ◽  
Western Antarctic Peninsula ◽  
Pygoscelis Adeliae ◽  
Adélie Penguins

AbstractAdélie penguins (Pygoscelis adeliae) are responding to ocean–climate variability throughout the marine ecosystem of the western Antarctic Peninsula (WAP) where some breeding colonies have declined by 80%. Nuclear and mitochondrial DNA (mtDNA) markers were used to understand historical population genetic structure and gene flow given relatively recent and continuing reductions in sea ice habitats and changes in numbers of breeding adults at colonies throughout the WAP. Genetic diversity, spatial genetic structure, genetic signatures of fluctuations in population demography and gene flow were assessed in four regional Adélie penguin colonies. The analyses indicated little genetic structure overall based on bi-parentally inherited microsatellite markers (FST=-0.006–0.004). No significant variance was observed in overall haplotype frequency (mtDNAΦST=0.017;P=0.112). Some comparisons with Charcot Island were significant, suggestive of female-biased philopatry. Estimates of gene flow based on a two-population coalescent model were asymmetrical from the species’ regional core to its northern range. Breeding Adélie penguins of the WAP are a panmictic population and hold adequate genetic diversity and dispersal capacity to be resilient to environmental change.

scholarly journals Population genetic structure of the great star coral, Montastraea cavernosa, across the Cuban archipelago with comparisons between microsatellite and SNP markers

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Alexis B. Sturm ◽  
Ryan J. Eckert ◽  
Juliett González Méndez ◽  
Patricia González-Díaz ◽  
Joshua D. Voss
Keyword(s):  
Genetic Structure ◽  
Population Genetic Structure ◽  
Population Genetic ◽  
Snp Markers ◽  
Genetic Connectivity ◽  
Limited Information ◽  
Western Atlantic ◽  
Trade Offs ◽  
Significant Genetic Structure ◽  
Montastraea Cavernosa

Abstract Coral reef habitats surrounding Cuba include relatively healthy, well-developed shallow and mesophotic (30–150 m) scleractinian communities at the cross-currents of the Tropical Western Atlantic (TWA). However, Cuba’s coral communities are not immune to the declines observed throughout the TWA, and there is limited information available regarding genetic connectivity, diversity, and structure among these populations. This represents an immense gap in our understanding of coral ecology and population dynamics at both local and regional scales. To address this gap, we evaluated the population genetic structure of the coral Montastraea cavernosa across eight reef sites surrounding Cuba. Colonies were genotyped using nine microsatellite markers and > 9,000 single nucleotide polymorphism (SNP) markers generated using the 2bRAD approach to assess fine-scale genetic structure across these sites. Both the microsatellite and SNP analyses identified patterns of genetic differentiation among sample populations. While the microsatellite analyses did not identify significant genetic structure across the seven shallow M. cavernosa sampling sites, the SNP analyses revealed significant pairwise population differentiation, suggesting that differentiation is greater between eastern and western sites. This study provides insight into methodological differences between microsatellite and SNP markers including potential trade-offs between marker-specific biases, sample size, sequencing costs, and the ability to resolve subtle patterns of population genetic structure. Furthermore, this study suggests that locations in western Cuba may play important roles in this species’ regional metapopulation dynamics and therefore may merit incorporation into developing international management efforts in addition to the local management the sites receive.

Molecular Population Genetic Structure in the Piping Plover

2009 ◽  
Author(s):  
Mark P. Miller ◽  
Susan M. Haig ◽  
Cheri L. Gratto-Trevor ◽  
Thomas D. Mullins
Keyword(s):  
Genetic Structure ◽  
Population Genetic Structure ◽  
Population Genetic ◽  
Piping Plover
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