New polymorphic tetranucleotide microsatellites improve scoring accuracy in the bottlenose dolphin Tursiops aduncus

Mol Ecol Resour. 2009 Mar;9(2):531-4. doi: 10.1111/j.1755-0998.2008.02246.x. Epub 2009 Jan 20.

Abstract

We isolated and characterized 19 novel tetranucleotide microsatellite markers in the Indo-Pacific bottlenose dolphin (Tursiops aduncus) in order to improve genotyping accuracy in applications like large-scale population-wide paternity and relatedness assessments. One hundred T. aduncus from Shark Bay, Western Australia, were screened for polymorphism. Cross-amplification was tested on four other small odontocete species. The new tetranucleotide microsatellite loci showed a more than fourfold higher scoring accuracy and significantly lower stutter formation compared to eight dinucleotide loci, although overall allelic diversity was significantly reduced.