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Y-Chromosome Analysis in Retuertas Horses
- Source :
- PLoS One, Digital.CSIC. Repositorio Institucional del CSIC, instname, PLoS ONE, PLoS ONE, Vol 8, Iss 5, p e64985 (2013)
- Publication Year :
- 2013
-
Abstract
- Several studies based on a variety of genetic markers have attempted to establish the origins of horse domestication. Thus far a discrepancy between the results of mitochondrial DNA analysis, which show high levels of diversity, and results from the Y-chromosome, with almost no genetic variability, has been identified. Most previous work on the horse Y-chromosome has focused on widespread, popular breeds or local Asian breeds. It is possible that these breeds represent a reduced set of the genetic variation present in the species. Additional genetic variation may be present in local breeds and ancient feral populations, such as the Retuertas horse in Spain. In this study we analyzed the Y-chromosome of the Retuertas horse, a feral horse population on the Iberian Peninsula that is at least several hundred years old, and whose genetic diversity and morphology suggests that it has been reproductively isolated for a long time. Data from the Retuertas horse was compared to another 11 breeds from the region (Portugal, Spain and France) or likely of Iberian origin, and then to data from 15 more breeds from around the globe. We sequenced 31 introns, Zinc finger Y-chromosomal protein (ZFY) and anonymous Y-linked fragments and genotyped 6 microsatellite loci found on the Y-chromosome. We found no sequence variation among all individuals and all breeds studied. However, fifteen differences were discovered between our data set and reference sequences in GenBank. We show that these likely represent errors within the deposited sequences, and suggest that they should not be used as comparative data for future projects.
- Subjects :
- Male
Evolutionary Genetics
Heredity
Genotype
Animal Types
Genotypes
Population
lcsh:Medicine
Large Animals
Biology
Genetic analysis
Y Chromosome
Genetic variation
Naturvetenskap
Genetics
Animals
Horses
Genetic variability
lcsh:Science
education
Domestication
Animal Management
Evolutionary Biology
education.field_of_study
Genetic diversity
Multidisciplinary
lcsh:R
Agriculture
Genomics
Comparative Genomics
Europe
Genetic Loci
Genetic marker
Evolutionary biology
Genetic Polymorphism
Microsatellite
lcsh:Q
Female
Veterinary Science
Natural Sciences
Animal Genetics
Population Genetics
Microsatellite Repeats
Research Article
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- PLoS One, Digital.CSIC. Repositorio Institucional del CSIC, instname, PLoS ONE, PLoS ONE, Vol 8, Iss 5, p e64985 (2013)
- Accession number :
- edsair.doi.dedup.....edcf968ea48bf095d912ad16f49cd767