Verification of an efficient genetic sex identification method in Portunus trituberculatus: Applied to study sex ratios in full-sib families
文献类型： 外文期刊
第一作者： Zhang, Wen
作者： Zhang, Wen;Lv, Jianjian;Ti, Xingbin;Zhao, Xiao Yan;Jin, Ling;Wu, Jie;Gao, Baoquan;Liu, Ping;Lv, Jianjian;Gao, Baoquan;Liu, Ping
作者机构：
关键词： Portunus trituberculatus; Sex-linked marker; Sex identification; Sex ratio
期刊名称：AQUACULTURE （ 影响因子：4.242； 五年影响因子：4.723 ）
ISSN： 0044-8486
年卷期： 2021 年 543 卷
页码：
收录情况： SCI
摘要： Portunus trituberculatus is one of the main mariculture crabs in China and has obvious sexual dimorphism. The development of a genetic sex identification method is key to clarifying the mechanisms of sex determination. Based on an insertion-deletion (inDel) marker closely linked to the sex of P. trituberculatus, we successfully established a sex identification method with the advantages of high efficiency, low cost and low false-positive rates using conventional PCR and agarose gel electrophoresis. Based on the method, the sex ratio of seven full-sib families at different developmental stages were analyzed, including zoea, megalopa and II juvenile crab. Our results showed that the sex ratio of P. trituberculatus in early development stages approximated the theoretical sex ratio (1:1) of the XY sex determination system, although there were three families with sex ratio deviations from 1:1 at the juvenile stage. This study is important for detailing the mechanisms of sex determination, and is also conducive to the development of sex-control technologies in this species.
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