Characterisation of polymorphic microsatellite markers for skates (Elasmobranchii: Rajidae) from expressed sequence tags |
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| Authors: | Aliya El Nagar Matthew McHugh Toby Rapp David W. Sims Martin J. Genner |
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| Affiliation: | (1) Marine Biological Association of the United Kingdom, Citadel Hill, Plymouth, PL1 2PB, UK;(2) Marine Institute, The Pier, Castletownbere, Cork, Ireland;(3) School of Biological Sciences, University of Plymouth, Drake Circus, Plymouth, PL4 8AA, UK;(4) School of Biological Sciences, University of Bristol, Woodland Road, Bristol, BS8 1UG, UK; |
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| Abstract: | Simple sequence repeat markers (SSRs, microsatellites) were characterised for skates (Elasmobranchii: Rajidae) from published expressed sequence tags (ESTs) of Leucoraja erinacea. These were tested in four European species (Raja clavata, Raja montagui, Dipturus batis, and Leucoraja naevus). Thirteen of the fourteen amplified loci were polymorphic in at least one species. Polymorphic loci possessed on average 4.5–5.9 alleles per species, and expected heterozygosity ranged from 0.05 to 0.88. Possible null alleles were detected at three loci, while one locus showed significant deviation from Hardy–Weinberg Equilibrium proportions. Three locus-pairs exhibited significant linkage disequilibrium in one or more species. This marker set will be valuable for population genetic analyses of the focal taxa, and may prove useful for studies of other skate species. |
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