Construction of High-Density Genetic Map and Mapping of Sex-Related Loci in the Yellow Catfish (Pelteobagrus fulvidraco)
文献类型： 外文期刊
作者： Gao, Dong 1 ; Zheng, Min 1 ; Lin, Genmei 1 ; Fang, Wenyu 1 ; Huang, Jing 1 ; Lu, Jianguo 1 ; Sun, Xiaowen 3 ;
作者机构： 1.Sun Yat Sen Univ, Sch Marine Sci, Guangzhou, Guangdong, Peoples R China
2.Southern Marine Sci & Engn Guangdong Lab, Zhuhai, Peoples R China
3.Chinese Acad Fishery Sci, Heilongjiang River Fisheries Res Inst, Harbin, Heilongjiang, Peoples R China
关键词： Yellow catfish; Genetic linkage map; Sex-related genes; Quantitative trait locus
期刊名称：MARINE BIOTECHNOLOGY （ 影响因子：3.619； 五年影响因子：3.322 ）
ISSN： 1436-2228
年卷期： 2020 年 22 卷 1 期
页码：
收录情况： SCI
摘要： The yellow catfish (Pelteobagrus fulvidraco) is a very important aquaculture species distributed in freshwater area of China. All-male yellow catfish is very popular in aquaculture because of their significant sex dimorphism phenomena. The males grow much faster than females in full-sibling family. However, the sex dimorphism mechanism is still unclear in yellow catfish. In order to better understand the genetic basis of yellow catfish sexual dimorphism, it is vital to map the sex-related traits and localize the candidate genes across yellow catfish whole genome. Here, we constructed a high-density linkage map of yellow catfish using genotyping-by-sequencing (GBS) strategy. A total of 5705 single-nucleotide polymorphism (SNP) markers were mapped to 26 different linkage groups (LGs) using 184 F1 offspring. The total genetic map length was 3071.59 cM, with an average interlocus distance of 0.54 cM. Eleven significant sex-related QTLs in yellow catfish were identified. Six sex-related genes were identified from the region of reference genome near these QTLs including amh, gnrhr, vasa, lnnr1, foxl2, and bmp15. The high-density genetic linkage map provides valuable resources for yellow catfish molecular assistant breeding and elucidating sex differentiation process. Moreover, the comparative genomic study was analyzed among yellow catfish, channel catfish, and zebrafish. It revealed highly conserved chromosomal distribution between yellow catfish and channel catfish.
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