Novel polymorphic microsatellite loci for the protogynous hermaphrodite slinger sea bream (Chrysoblephus puniceus, Sparidae) |
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Authors: | Chopelet Julien Helyar Sarah Mann Bruce Mariani Stefano |
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Affiliation: | Marine Biodiversity Ecology and Evolution, UCD School of Biology and Environmental Science, University College Dublin, Belfield, Dublin 4, Ireland, Molecular Ecology and Fisheries Genetics Laboratory, School of Biological Sciences, University of Bangor LL57 2UW, Wales, UK, Oceanographic Research Institute, SAAMBR, uShaka Marine Park, King Shaka Avenue, Durban 4001, South Africa. |
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Abstract: | As a result of the global decline of fish stocks, an increasing number of fish species are becoming targets of heavy exploitation, often concomitantly with a lack of biological knowledge on their structure and demographics. Here we present 11 new polymorphic microsatellite loci, isolated from the slinger sea bream (Chrysoblephus puniceus, Sparidae), a relatively recent target of coastal fisheries in eastern South Africa. Levels of genetic diversity were assessed in 39 individuals collected from the KwaZulu-Natal coast (Park Rynie, South Africa). Observed and expected heterozygosities varied between 0.39 and 0.97 and between 0.53 and 0.96, respectively. One locus (SL35) showed significant heterozygote deficiency and linkage disequilibrium was detected between SL35 and SL1. Importantly, five of these microsatellites cross-amplify in Cheimerius nufar, a sympatric species also subjected to exploitation. |
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Keywords: | microsatellite loci overfishing sex change skewed sex ratio Sparidae |
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