نتایج جستجو برای: genetic differentiation
تعداد نتایج: 807917 فیلتر نتایج به سال:
due to the lack of specified linage and parentage information from exotic broodstocks of litopenaeus vannamei shrimp, in iran and multiple breeding of closed broodstock populations, also concern about the low level of genetic diversity and accumulated inbreeding and in order to comparison of the genetic variability indices and analysis of the genetic differentiation, total of 30 samples from bo...
This study represents a large-scale population genetic analysis of the stellate sturgeon, Acipenser stellatus, in the Caspian Sea. In total, 192 samples of adult stellate sturgeon were collected from four commercial catch stations in the Northern (Volga and Ural Rivers) and Southern Caspian Sea (estuary of Sefidrud and Gorganrod Rivers-Iran). Fifteen sets of microsatellite primers developed fro...
Abstract Large pelagic fishes are often broadly distributed and capable of long-distance movements. These factors can promote gene flow that makes it difficult to disentangle intra- vs. inter-specific levels genetic differentiation. Here, we assess the relationship two istiophorid billfishes, white marlin (Kajikia albida) striped (K. audax), presently considered sister species inhabiting separa...
Population genetics can reveal whether colonization of created habitats has been successful and inform future strategies for habitat creation. We used genetic analysis to investigate spotted salamander (Ambystoma maculatum) vernal pools explored the impact characteristics on diversity connectivity pools. Our first objective was examine structure, differentiation, diversity, potential a founder ...
Several characteristics of habitats of herbivores and their food-plant communities, such as plant-species composition and plant quality, influence population genetics of both herbivores and their host plants. We investigated how different ecological and geographic factors affect genetic variation in and differentiation of 23 populations of the oligophagous seed predator Lygaeus equestris (Heter...
Genetic diversity across different human populations can enhance understanding of the genetic basis of disease. We calculated the genetic risk of 102 diseases in 1,043 unrelated individuals across 51 populations of the Human Genome Diversity Panel. We found that genetic risk for type 2 diabetes and pancreatic cancer decreased as humans migrated toward East Asia. In addition, biliary liver cirrh...
Populations of Eruca sativa (Brassicaceae) derived from arid and Mediterranean habitats exhibit ecotypic differentiation. Here, pooled DNA sequencing was used to assess adaptive genome differentiation in the two ecotypes. Differentiated SNP loci were scanned with empirical F ST outlier method by correlating allele frequencies environmental parameters. Genetic diversity values relatively higher ...
This study investigates the genetic structure of an eukaryotic microorganism, the toxic dinoflagellate Alexandrium ostenfeldii, from the Baltic Sea, a geologically young and ecologically marginal brackish water estuary which is predicted to support evolution of distinct, genetically impoverished lineages of marine macroorganisms. Analyses of the internal transcribed spacer (ITS) sequences and A...
To investigate the population dynamics of anadromous Baltic Sea perch Perca fluviatilis (Linnaeus), we studied migratory behaviour (arrival to spawning location) and structure (genetic differentiation) three closely located (<50 km) populations. Spawning migration lasted for 32–80 days, passive integrated transponder tag (PIT-tag) data indicated that displayed reproductive homing. Populations w...
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