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Linking the genomes of nonmodel teleosts through comparative genomics
Sarropoulou, E.; Nousdili, D.; Magoulas, A.; Kotoulas, G. (2008). Linking the genomes of nonmodel teleosts through comparative genomics. Mar. Biotechnol. 10(3): 227-233. https://dx.doi.org/10.1007/s10126-007-9066-5
In: Marine Biotechnology. Springer-Verlag: New York. ISSN 1436-2228; e-ISSN 1436-2236, meer
Peer reviewed article  

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Trefwoorden
    Genomes
    Mapping

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  • Sarropoulou, E.
  • Nousdili, D.
  • Magoulas, A., meer
  • Kotoulas, G., meer

Abstract
    Recently the genomes of two more teleost species have been released: the medaka (Oryzias latipes), and the three-spined stickleback (Gasterosteus aculateus). The rapid developments in genomics of fish species paved the way to new and valuable research in comparative genetics and genomics. With the accumulation of information in model species, the genetic and genomic characterization of nonmodel, but economically important species, is now feasible. Furthermore, comparison of low coverage gene maps of aquacultured fish species against fully sequenced fish species will enhance the efficiency of candidate genes identification projected for quantitative trait loci (QTL) scans for traits of commercial interest. This study shows the syntenic relationship between the genomes of six different teleost species, including three fully sequenced model species: Tetraodon nigroviridis, Oryzias latipes, Gasterosteus aculateus, and three marine species of commercial and evolutionary interest: Sparus aurata, Dicentrarchus labrax, Oreochromis spp. All three commercial fish species belong to the order Perciformes, which is the richest in number of species (approximately 10,000) but poor in terms of available genomic information and tools. Syntenic relationships were established by using 800 EST and microsatellites sequences successfully mapped on the RH map of seabream. Comparison to the stickleback genome produced most positive BLAT hits (58%) followed by medaka (32%) and Tetraodon (30%). Thus, stickleback was used as the major stepping stone to compare seabass and tilapia to seabream. In addition to the significance for the aquaculture industry, this approach can encompass important ecological and evolutionary implications. Electronic supplementary material The online version of this article (doi:10.1007/s10126-007-9066-5) contains supplementary material, which is available to authorized users.

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