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Journal of Heredity Advance Access originally published online on April 3, 2007
Journal of Heredity 2007 98(3):221-231; doi:10.1093/jhered/esm006
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© The American Genetic Association. 2007. All rights reserved. For permissions, please email: journals.permissions@oxfordjournals.org.

An Extended Microsatellite Set for Linkage Mapping in the Domestic Dog

David R. Sargan, Jesus Aguirre-Hernandez, Francis Galibert, and Elaine A. Ostrander

From the Centre for Veterinary Science, Department of Veterinary Medicine, University of Cambridge, Madingley Road, Cambridge CB3 0ES, UK (Sargan and Aguirre-Hernandez); the Cancer Genetics Branch, National Human Genome Resources Institute, National Institutes of Health, Building 50, South Drive, Bethesda, MD 20896 (Sargan and Ostrander); and the UMR 6061 CNRS, Genetique et developpement, Faculte de Medecine, 2 avenue Pr. Léon Bernard, 35043 Rennes Cédex, France (Galibert)

Address correspondence to Dr. D. R. Sargan at the address above, or e-mail: drs20{at}cam.ac.uk.

The extremes of phenotype displayed by the domestic dog, as well as the largest number of naturally occurring inherited diseases in any mammalian species except man (>450), have generated a large interest in genomic linkage mapping in the species. Marker sets for linkage mapping should ideally show both high levels of polymorphism among the target group of animals and an even spacing of markers across the whole genome. Currently a microsatellite marker set known as Minimal Screening Set 2 (MSS2) is widely used. Here, we have extended this marker set by filling in gaps as noted from the marker positions in the CanFam genome assembly (1.0) and the 5000cR radiation hybrid (RH) map. An additional 183 markers have been positioned to increase the coverage of the MSS2 set wherever it contains a gap >9 mb or 10005000 RH units. We have called the marker set derived from the MSS2 set and these 183 markers, MSS3. The average physical spacing of markers in the complete 507 marker MSS3 set is 5 mb, whereas average heterozygosity of the 183 new markers on a panel of 10 dogs of differing breeds is 0.74. This marker group will allow genome-wide scans in the dog to be conducted at close to 5 cM resolution.

Corresponding Editor: Robert Wayne

Received November 28, 2005
Accepted December 22, 2006


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