Population Genetic Structure of 3 Alpine Stream Insects: Influences of Gene Flow, Demographics, and Habitat Fragmentation

2002 ◽  
Vol 21 (1) ◽  
pp. 114-131 ◽  
Author(s):  
Michael T. Monaghan ◽  
Piet Spaak ◽  
Christopher T. Robinson ◽  
J. V. Ward
Keyword(s):  
Gene Flow ◽  
Genetic Structure ◽  
Habitat Fragmentation ◽  
Population Genetic Structure ◽  
Population Genetic ◽  
Stream Insects ◽  
Alpine Stream

Population genetic structure and gene flow in the Japanese sea cucumber Apostichopus japonicus across Toyama Bay, Japan

2012 ◽  
Vol 78 (4) ◽  
pp. 775-783 ◽  
Author(s):  
Taha Soliman ◽  
Manami Kanno ◽  
Akihiro Kijima ◽  
Yuji Yamazaki
Keyword(s):  
Gene Flow ◽  
Genetic Structure ◽  
Population Genetic Structure ◽  
Population Genetic ◽  
Sea Cucumber ◽  
Apostichopus Japonicus ◽  
Toyama Bay ◽  
Japanese Sea Cucumber

scholarly journals High levels of gene flow and low population genetic structure related to high dispersal potential of a tropical marine angiosperm

2009 ◽  
Vol 390 ◽  
pp. 67-77 ◽  
Author(s):  
JK van Dijk ◽  
BI van Tussenbroek ◽  
K Jiménez-Durán ◽  
GJ Márquez-Guzmán ◽  
J Ouborg
Keyword(s):  
Gene Flow ◽  
Genetic Structure ◽  
Population Genetic Structure ◽  
Population Genetic ◽  
High Dispersal ◽  
Dispersal Potential ◽  
Marine Angiosperm

scholarly journals The influence of roads on the fine-scale population genetic structure of the dengue vector Aedes aegypti (Linnaeus)

2021 ◽  
Vol 15 (2) ◽  
pp. e0009139
Author(s):  
Maria Angenica F. Regilme ◽  
Thaddeus M. Carvajal ◽  
Ann–Christin Honnen ◽  
Divina M. Amalin ◽  
Kozo Watanabe
Keyword(s):  
Gene Flow ◽  
Genetic Structure ◽  
Aedes Aegypti ◽  
Spatial Scale ◽  
Population Genetic Structure ◽  
Population Genetic ◽  
Mosquito Control ◽  
Genetic Admixture ◽  
Fine Spatial Scale ◽  
The Road

Dengue is endemic in tropical and subtropical countries and is transmitted mainly by Aedes aegypti. Mosquito movement can be affected by human-made structures such as roads that can act as a barrier. Roads can influence the population genetic structure of Ae. aegypti. We investigated the genetic structure and gene flow of Ae. aegypti as influenced by a primary road, España Boulevard (EB) with 2000-meter-long stretch and 24-meters-wide in a very fine spatial scale. We hypothesized that Ae. aegypti populations separated by EB will be different due to the limited gene flow as caused by the barrier effect of the road. A total of 359 adults and 17 larvae Ae. aegypti were collected from June to September 2017 in 13 sites across EB. North (N1-N8) and South (S1-S5) comprised of 211 and 165 individuals, respectively. All mosquitoes were genotyped at 11 microsatellite loci. AMOVA FST indicated significant genetic differentiation across the road. The constructed UPGMA dendrogram found 3 genetic groups revealing the clear separation between North and South sites across the road. On the other hand, Bayesian cluster analysis showed four genetic clusters (K = 4) wherein each individual samples have no distinct genetic cluster thus genetic admixture. Our results suggest that human-made landscape features such as primary roads are potential barriers to mosquito movement thereby limiting its gene flow across the road. This information is valuable in designing an effective mosquito control program in a very fine spatial scale.

scholarly journals Microgeographic Population Genetic Structure of Baylisascaris procyonis (Nematoda: Ascaroidae) in Western Michigan Indicates the Grand River Is a Barrier to Gene Flow

2015 ◽  
Vol 101 (6) ◽  
pp. 671 ◽  
Author(s):  
Christina A. Sarkissian ◽  
Sara K. Campbell ◽  
Guha Dharmarajan ◽  
Joseph Jacquot ◽  
L. Kristen Page ◽  
...  
Keyword(s):  
Gene Flow ◽  
Genetic Structure ◽  
Population Genetic Structure ◽  
Population Genetic ◽  
Baylisascaris Procyonis ◽  
Grand River

scholarly journals Absence of Population Genetic Structure Among Breeding Colonies of the Waved Albatross

The Condor ◽  
2006 ◽  
Vol 108 (2) ◽  
pp. 440-445 ◽  
Author(s):  
Kathryn P. Huyvaert ◽  
Patricia G. Parker
Keyword(s):  
Genetic Variation ◽  
Gene Flow ◽  
Genetic Structure ◽  
Population Genetic Structure ◽  
Population Genetic ◽  
Breeding Population ◽  
Genetic Structuring ◽  
Galapagos Archipelago ◽  
Phoebastria Irrorata ◽  
Waved Albatrosses

Abstract We used four variable microsatellite loci to examine the distribution of genetic variation and degree of genetic structuring among three subcolonies of Waved Albatrosses (Phoebastria irrorata). The breeding population of this species is almost entirely limited to the island of Española in the Galápagos Archipelago. Such strong philopatry could lead to population genetic structure among subcolonies on the island. Pairwise values of the FST analog, θ, calculated from microsatellite genotypes, were all less than 0.012, indicating little genetic differentiation and the presence of gene flow throughout the population.

Effects of habitat fragmentation on population genetic structure in the white-footed mouse (Peromyscus leucopus)

2001 ◽  
Vol 79 (2) ◽  
pp. 285-295 ◽  
Author(s):  
Catherine A Mossman ◽  
Peter M Waser
Keyword(s):  
Genetic Variation ◽  
Genetic Structure ◽  
Habitat Fragmentation ◽  
Genetic Differentiation ◽  
Population Genetic Structure ◽  
Population Genetic ◽  
Peromyscus Leucopus ◽  
Marginal Effect ◽  
Geographic Scale ◽  
White Footed Mouse

Habitat fragmentation may have significant consequences for population genetic structure because geographic distance and physical barriers may impede gene flow. In this study, we investigated whether habitat fragmentation affects fine-scale genetic structure of populations of the white-footed mouse (Peromyscus leucopus). We studied 27 populations of P. leucopus, 17 in continuous forest and 10 in isolated woodlots. Populations were trapped in pairs that were either 500 or 2000 m apart. We estimated genetic variation at eight P. leucopus specific microsatellite DNA loci. We discovered significant genetic variation within all populations, but no significant differences in numbers of alleles or heterozygosity between populations. For given population pairs, we found significant genetic differentiation even at very short distances, based on multilocus FST estimates. The amount of genetic differentiation between population pairs was similar in the two habitats. Distance had a marginal effect on genetic differentiation when comparing paired populations separated by 2000 m with those separated by 500 m. However, at a larger geographic scale, there was no evidence of isolation by distance. This study confirms that microsatellite-based studies have the potential to detect interpopulation differentiation at an extremely local scale, and suggests that habitat fragmentation has surprisingly few effects on P. leucopus genetic structure.

Population genetic structure inMyrtus communisL. in a chronically fragmented landscape in the Mediterranean: can gene flow counteract habitat perturbation?

Plant Biology ◽  
2009 ◽  
Vol 11 (3) ◽  
pp. 442-453 ◽  
Author(s):  
R. G. Albaladejo ◽  
L. F. Carrillo ◽  
A. Aparicio ◽  
J. F. Fernández-Manjarrés ◽  
J. P. González-Varo
Keyword(s):  
Gene Flow ◽  
Genetic Structure ◽  
Population Genetic Structure ◽  
Population Genetic ◽  
Fragmented Landscape ◽  
The Mediterranean

A comparative framework to infer landscape effects on population genetic structure: are habitat suitability models effective in explaining gene flow?

2015 ◽  
Vol 30 (8) ◽  
pp. 1405-1420 ◽  
Author(s):  
María C. Mateo-Sánchez ◽  
Niko Balkenhol ◽  
Samuel Cushman ◽  
Trinidad Pérez ◽  
Ana Domínguez ◽  
...  
Keyword(s):  
Gene Flow ◽  
Genetic Structure ◽  
Population Genetic Structure ◽  
Habitat Suitability ◽  
Population Genetic ◽  
Habitat Suitability Models ◽  
Comparative Framework ◽  
Landscape Effects
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