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has been cited by the following article:

• TITLE: Constructing Genetic Linkage Maps Using the Whole Genome Sequence of Pacific Bluefin Tuna (Thunnus orientalis) and a Comparison of Chromosome Structure among Teleost Species

  AUTHORS: Tsubasa Uchino, Yoji Nakamura, Masashi Sekino, Wataru Kai, Atushi Fujiwara, Motoshige Yasuike, Takuma Sugaya, Himeko Fukuda, Motohiko Sano, Takashi Sakamoto

  KEYWORDS: Pacific Bluefin Tuna, Microsatellite Marker, Genetic Linkage Map

  JOURNAL NAME: Advances in Bioscience and Biotechnology, Vol.7 No.2, February 24, 2016

  ABSTRACT: Pacific bluefin tuna (Thunnus orientalis) is one of the most economically important species in the Percomorpha group of teleost fishes. Their migrations are extensive and depend upon continuous swimming at a high rate of speed throughout their life. The draft genome sequence of this species has been reported but remains highly fragmented. We constructed a Pacific bluefin tuna genetic linkage map using microsatellite markers developed on each of the scaffolds from the draft genome sequence to link these genome fragments and understand the genomic structure of species in Percomorpha. Of the 606 polymerase chain reaction microsatellite primer pairs tested, 473 were polymorphic in the mapping populations for the linkage analysis. We constructed sex-specific maps for 24 linkage groups consisting of 470 markers, which allowed us to place scaffolds that cumulatively represented 20.8% (153.8 Mb) of the sequenced genome onto the linkage groups. The distribution of orthologous genes on the chromosomes of tuna and four other teleost fish species suggested that the constitution of tuna chromosomes is closest to that of medaka. Both species have the 24 chromosomes of the ancestral teleost, including several chromosomal inversions. The integrated map developed in this study will be useful to construct a complete physical map to conduct comparative teleost genomics and genetic studies on economically useful traits in Pacific bluefin tuna.