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Changes of gonadotropin-releasing hormone receptor 2 during the anadromous spawning migration in Coilia nasus

文献类型： 外文期刊

作者： Duan, Jin-Rong 1 ; Fang, Di-An 1 ; Zhang, Min-Ying 1 ; Liu, Kai 1 ; Zhou, Yan-Feng 1 ; Xu, Dong-Po 1 ; Xu, Pao 1 ; Li, Da 1 ;

作者机构： 1.Chinese Acad Fishery Sci, Freshwater Fisheries Res Ctr, 9 Shanshui Rd, Wuxi 214128, Peoples R China

2.Huazhong Agr Univ, Key Lab Freshwater Anim Breeding, Minist Agr, Wuhan 430070, Peoples R China

关键词： GnRH-R2; Spawning upstream migration; Coilia nasus; Yangtze River

期刊名称：BMC DEVELOPMENTAL BIOLOGY （ 影响因子：1.978； 五年影响因子：2.533 ）

ISSN： 1471-213X

年卷期： 2016 年 16 卷

页码：

收录情况： SCI

摘要： Background: An increase in the activity of the pituitary-gonad axis (PG-axis) and gonad development are essential for the onset of spawning migration in teleosts. In the fish Coilia nasus, gonad development and spawning migration up the Yangtze River occurs by the end of each summer. We hypothesized that gonadotropin releasing hormones receptor 2 (GnRH-R2), which together produce a signal that interacts with the PG-axis, may help to regulate spawning migration processes. Results: In this regard, we (1) characterized the gonadosomatic index (GSI) in the anadromous fish C. nasus; (2) analyzed the GnRH-R2 mRNA expression levels in ovary and brain, and concentrations in the serum; and (3) identified the GnRH-R2 protein distribution in the brain and ovaries. We found strong relationships between all of these indices. Conclusions: The results indicate that GnRH-R2 could act together to promote spawning during the anadromous migration. There is some evidence that the GnRH-R2 gene expression levels and protein distributions change in association with the migratory behavior.

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