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Fluorescent dUTP helps characterize 10 novel tetranucleotide microsatellites from an enriched salamander (Ambystoma texanum) genomic library


, Rod N. Williams. Fax: (765) 496–2422; E-mail:


Ten tetranucleotide microsatellite loci were isolated and characterized from Indiana (USA) populations of the smallmouth salamander, Ambystoma texanum. As opposed to individually labelling primers that were not yet known to be polymorphic, we used fluorescent dUTP to assess genetic variability and found it to be very effective. Allelic diversity ranged from two to 18 alleles per locus and observed heterozygosity ranged from 0.17 to 0.91 among roughly 25 individuals. One of the 10 markers also amplified and was polymorphic in the tiger salamander (A. tigrinum).