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Optimization of shock conditions to induce gynogenesis in topmouth culter (Culter alburnus)

文献类型： 外文期刊

作者： Li, Ting 1 ; Jia, Yongyi 2 ; Gao, Jin 1 ; Zhao, Jingli 1 ; Jiang, Wenping 2 ; Gu, Zhimin 2 ; Yang, Runqing 1 ;

作者机构： 1.Chinese Acad Fishery Sci, Res Ctr Aquat Biotechnol, Beijing 100141, Peoples R China

2.Agr Minist, Zhejiang Inst Freshwater Fisheries, Key Lab Hlth Freshwater Aquaculture, Key Lab Freshwater Aquaculture Genet & Breeding Z, Huzhou 313001, Peoples R China

关键词： Topmouth culter; Gynogenesis; Quadratic-orthogonal-rotation combination design; Response surface method; Cold shock

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： 2018 年 490 卷

页码：

收录情况： SCI

摘要： Standing duration (from fertilization to the beginning of cold shock), shocking temperature, and cold shock duration are critical factors for improving the fertility of the female parent and survivability of offspring in the gynogenesis of topmouth culter (Culter alburnus). A 3-factor quadratic-orthogonal-rotation combination design experiment was conducted to evaluate the main and interacting effects of these three factors on gynogenesis efficiency with the fewest experimental combinations. Two indices including gynogenesis and hatching rates were measured repeatedly for each experimental combination. Using quadratic regression equations of the two experimental indices for these factors, optimal factor combinations were screened within factorial-level intervals, such as a standing duration of 6 min, shock duration of 18 min, and shock temperature of 7 degrees C for the gynogenesis rate, while 6 min, 23 min, and 5 degrees C, respectively, were identified for the hatching rate. Response surface analysis showed that within factorial intervals, the single-factor curve and double-factor surface exhibited a convex shape. Among the three factors, standing duration showed the greatest contribution to both gynogenesis and hatching rates, while shocking duration showed the smallest contribution.

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