Population genetics of Melampus bidentatus (Gastropoda: Pulmonata): the effect of planktonic development on gene flow

Genetica ◽  
1985 ◽  
Vol 66 (3) ◽  
pp. 223-229 ◽  
Author(s):  
S. W. Schaeffer ◽  
E. C. Keller ◽  
N. E. Buroker
Keyword(s):  
Population Genetics ◽  
Gene Flow ◽  
Melampus Bidentatus

scholarly journals Population genetics of Southern Hemisphere tope shark (Galeorhinus galeus): Intercontinental divergence and constrained gene flow at different geographical scales

PLoS ONE ◽  
2017 ◽  
Vol 12 (9) ◽  
pp. e0184481 ◽  
Author(s):  
Aletta E. Bester-van der Merwe ◽  
Daphne Bitalo ◽  
Juan M. Cuevas ◽  
Jennifer Ovenden ◽  
Sebastián Hernández ◽  
...  
Keyword(s):  
Population Genetics ◽  
Gene Flow ◽  
Southern Hemisphere ◽  
Galeorhinus Galeus

scholarly journals Molecular markers applying in forest trees gene pool conservation

2009 ◽  
pp. 101-113
Author(s):  
Jelena Milovanovic ◽  
Mirjana Sijacic-Nikolic
Keyword(s):  
Population Genetics ◽  
Molecular Markers ◽  
Gene Flow ◽  
Gene Pool ◽  
Statistical Power ◽  
Forest Trees ◽  
Effective Population ◽  
Migration Patterns ◽  
Geographic Diversity ◽  
Marker Loci

Many studies performed during the last years demonstrated the usefulness of neutral molecular markers in the field of conservation and population genetics of forest trees, in particular to understand the importance of migration patterns in shaping current genetic and geographic diversity and to measure important parameters such as effective population size, gene flow and past bottleneck. During the next years, a large amount of data at marker loci or at sequence level is expected to be collected, and to become excellent statistical power for the assessment of biological and evolutionary value.

Population Genetics and Gene Flow of the Common Tern

The Condor ◽  
1990 ◽  
Vol 92 (1) ◽  
pp. 182-192 ◽  
Author(s):  
Sherman L. Burson
Keyword(s):  
Population Genetics ◽  
Gene Flow ◽  
Common Tern ◽  
The Common

Isolation and characterisation via 454 sequencing of microsatellites from the tawny frogmouth, Podargus strigoides (Class Aves, Family Podargidae)

2012 ◽  
Vol 60 (2) ◽  
pp. 133
Author(s):  
Fiona E. Hogan ◽  
Marian Weaving ◽  
Gregory R. Johnston
Keyword(s):  
Population Genetics ◽  
Gene Flow ◽  
Microsatellite Markers ◽  
Reproductive Ecology ◽  
454 Sequencing ◽  
Urban Environments ◽  
Shotgun Sequencing ◽  
Target Species ◽  
Single Population ◽  
Polymorphic Microsatellite

We isolated 24 novel polymorphic microsatellite markers from the tawny frogmouth, a nocturnal bird endemic to Australia, which has successfully adapted to urban environments. Initially, 454 shotgun sequencing was used to identify 733 loci with primers designed. Of these, we trialled 30 in the target species of which all amplified a product of expected size. Subsequently, all 30 of these loci were screened for variation in 25 individuals, from a single population in Melbourne, Victoria, Australia. Twenty-eight loci were polymorphic with observed heterozygosity ranging from 0.03 to 0.96 (mean 0.58) and the number of alleles per locus ranged from 2 to 18 (average of 6.5); we confirmed that 24 loci conformed to Hardy–Weinberg expectations. The 24 loci identified here will be sufficient to unequivocally identify individuals and will be useful in understanding the reproductive ecology, population genetics and the gene flow amongst localities in urban environments where this bird thrives.

Managing gene flow among isolated population fragments. I. Limited information

2017 ◽  
Author(s):  
Richard Frankham ◽  
Jonathan D. Ballou ◽  
Katherine Ralls ◽  
Mark D. B. Eldridge ◽  
Michele R. Dudash ◽  
...  
Keyword(s):  
Population Genetics ◽  
Gene Flow ◽  
Management Strategies ◽  
Genetic Data ◽  
Outbreeding Depression ◽  
Isolated Population ◽  
Limited Information ◽  
Detailed Data ◽  
Genetic Management ◽  
Better Than

When the decision is made to augment gene flow into an isolated population, managers must decide how to augment gene flow, when to start, from where to take the individuals or gametes to be added, how many, which individuals, how often and when to cease. Even without detailed genetic data, sound genetic management strategies for augmenting gene flow can be instituted by considering population genetics theory, and/or computer simulations. When detailed data are lacking, moving (translocating) some individuals into isolated inbred population fragments is better than moving none, as long as the risk of outbreeding depression is low.

Genetic Relationship between Cultivated and Feral Creeping Bentgrass (Agrostis stolonifera) in a Cultural Landscape

Weed Science ◽  
2012 ◽  
Vol 60 (4) ◽  
pp. 583-588 ◽  
Author(s):  
Collin W. Ahrens ◽  
Carol A. Auer
Keyword(s):  
Population Genetics ◽  
Gene Flow ◽  
Cultural Landscape ◽  
Cultural Landscapes ◽  
Creeping Bentgrass ◽  
Golf Course ◽  
Principal Coordinates Analysis ◽  
Principal Coordinates ◽  
Feral Populations ◽  
High Degree

Gene flow is an important consideration in the adoption of crops with novel traits or transgenes when sexually compatible relatives occur in the landscape. Unfortunately, gene flow and its long-term environmental impacts are very difficult to predict without releasing and studying the novel genotype. This project uses a retrospective population genetics approach to characterize the relationship between cultivated creeping bentgrass (CB) on a golf course and the same species in five feral populations nearby. CB plants were collected from an 8-yr-old golf course, five weedy populations up to 1,020 m from the golf course, and four modern CB cultivars. Using microsatellite markers and Bayesian inference, two major genetic clusters were distinguished: (1) CB cultivars and individuals from the golf course (cultivar genotype), and (2) the majority of individuals (62%) from the five feral populations (feral genotype). Two feral CB individuals (3.3% of all feral plants) were partially assigned to the cultivar genotype. Principal coordinates analysis agreed with this assignment, suggesting that an intraspecific hybridization event may have occurred. Plants in four feral populations showed a high degree of genetic similarity, but one feral population (Reservoir) was heterogeneous indicating that genetically complex CB populations can develop in cultural landscapes. While recognizing the limitations inherent in a single study of CB population genetics, these results add to the relevant knowledge for predictive ecological risk assessment.

Population genetics of the blue crabCallinectes sapidus: modest population structuring in a background of high gene flow

1994 ◽  
Vol 118 (1) ◽  
pp. 53-65 ◽  
Author(s):  
Anne L. McMillen-Jackson ◽  
Theresa M. Bert ◽  
Philip Steele
Keyword(s):  
Population Genetics ◽  
Gene Flow ◽  
High Gene Flow ◽  
Population Structuring ◽  
High Gene
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