文献类型： 外文期刊
作者： Liu, Kai 1 ; Xu, Dongpo 1 ; Li, Jia 2 ; Bian, Chao 2 ; Duan, Jinrong 1 ; Zhou, Yanfeng 1 ; Zhang, Minying 1 ; You, Xinxin 2 ;
作者机构： 1.Chinese Acad Fishery Sci, Freshwater Fisheries Res Ctr, Wuxi 214081, Jiangsu, Peoples R China
2.BGI, Shenzhen Key Lab Marine Genom, Guangdong Prov Key Lab Mol Breeding Marine Econ A, Shenzhen 518083, Guangdong, Peoples R China
3.Inst Oceanol & Marine Fisheries, Nantong 226007, Jiangsu, Peoples R China
4.BGI Zhenjiang Inst Hydrobiol, Zhenjiang 212000, Jiangsu, Peoples R China
5.Chinese Acad Fishery Sci, BGI Res Ctr Aquat Genom, Shenzhen 518083, Guangdong, Peoples R China
6.Sun Yat Sen Univ, Sch Life Sci, Coll Ecol & Evolut, Lab Aquat Genom, Guangzhou 510275, Guangdong, Peoples R China
关键词： Clearhead icefish; Protosalanx hyalocranius; Whole genome sequencing; Genome assembly; Gene prediction; Repetitive sequences
期刊名称：GIGASCIENCE （ 影响因子：6.524； 五年影响因子：8.702 ）
ISSN： 2047-217X
年卷期： 2017 年 6 卷 4 期
页码：
收录情况： SCI
摘要： Chinese clearhead icefish, Protosalanx hyalocranius, is a representative icefish species with economic importance and special appearance. Due to its great economic value in China, the fish was introduced into Lake Dianchi and several other lakes from the Lake Taihu half a century ago. Similar to the Sinocyclocheilus cavefish, the clearhead icefish has certain cavefish-like traits, such as transparent body and nearly scaleless skin. Here, we provide the whole genome sequence of this surface-dwelling fish and generated a draft genome assembly, aiming at exploring molecular mechanisms for the biological interests. Findings: A total of 252.1 Gb of raw reads were sequenced. Subsequently, a novel draft genome assembly was generated, with the scaffold N50 reaching 1.163 Mb. The genome completeness was estimated to be 98.39 % by using the CEGMA evaluation. Finally, we annotated 19 884 protein-coding genes and observed that repeat sequences account for 24.43 % of the genome assembly. Conclusion: We report the first draft genome of the Chinese clearhead icefish. The genome assembly will provide a solid foundation for further molecular breeding and germplasm resource protection in Chinese clearhead icefish, as well as other icefishes. It is also a valuable genetic resource for revealing the molecular mechanisms for the cavefish-like characters.
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