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A genetic linkage map of Sole (Solea solea): a tool for evolutionary and comparative analyses of exploited (Flat)fishes
Diopere, E.; Maes, G.E.; Komen, H; Volckaert, F.A.M.; Groenen, M (2014). A genetic linkage map of Sole (Solea solea): a tool for evolutionary and comparative analyses of exploited (Flat)fishes. PLoS One 9(12): -. dx.doi.org/10.1371/journal.pone.0115040
In: PLoS One. Public Library of Science: San Francisco. ISSN 1932-6203; e-ISSN 1932-6203, meer
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Gasterosteus aculeatus Linnaeus, 1758 [WoRMS]; Oreochromis niloticus (Linnaeus, 1758) [WoRMS]; Oryzias latipes (Temminck & Schlegel, 1846) [WoRMS]; Scophthalmus maximus (Linnaeus, 1758) [WoRMS]; Solea solea (Linnaeus, 1758) [WoRMS]; Tetraodon nigroviridis Marion de Procé, 1822 [WoRMS]
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| Auteurs | | Top |
- Diopere, E., meer
- Maes, G.E., meer
- Komen, H
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- Volckaert, F.A.M., meer
- Groenen, M
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| Abstract |
Linkage maps based on markers derived from genes are essential evolutionary tools for commercial marine fish to help identify genomic regions associated with complex traits and subject to selective forces at play during exploitation or selective breeding. Additionally, they allow the use of genomic information from other related species for which more detailed information is available. Sole (solea solea L.) is a commercially important flatfish species in the North Sea, subject to overexploitation and showing evidence of fisheries-induced evolutionary changes in growth- and maturation-related traits. Sole would definitely benefit from a linkage map to better understand how evolution has shaped its genome structure. This study presents a linkage map of sole based on 423 single nucleotide polymorphisms derived from expressed sequence tags and 8 neutral microsatellite markers. The total map length is 1233.8 cM and consists of 38 linkage groups with a size varying between 0 to 92.1 cM. Being derived from expressed sequence tags allowed us to align the map with the genome of four model fish species, namely medaka (Oryzias latipes), Nile tilapia (Oreochromis niloticus), three-spined stickleback (Gasterosteus aculeatus) and green spotted pufferfish (Tetraodon nigroviridis). This comparison revealed multiple conserved syntenic regions with all four species, and suggested that the linkage groups represent 21 putative sole chromosomes. The map was also compared to the linkage map of turbot (Scophthalmus maximus), another commercially important flatfish species and closely related to sole. For all putative sole chromosomes (except one) a turbot homolog was detected, confirming the even higher degree of synteny between these two flatfish species. |
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