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The Artificial Propagation and Fry Rearing of Leno （Brachymystax lenok）

ISSN号：1005-3832
期刊名称：《水产学杂志》
时间：0
分类：S965.199[农业科学—水产养殖;农业科学—水产科学] Q959.46[生物学—动物学]
作者机构：[1]Heilongjiang Fisheries Research Institute, Chinese Academy of Fishery Sciences, Harbin 150070, China
相关基金：supported by Special Fund for Agro-scientific Research in the Public Interest(Grant no. 201003055);the National Science and Technology Supporting Plan(Grant no. 2012BAD25B10);National Science and Technology Plan of the Twelfth Five-Year for the Rural Development in China(Grant no. 2012BAD26B05)

作者： MOU Zheng-bo LI YONG-fa XU Ge-feng LIU Yang ZHANG Yu-yong[1]

关键词：人工繁殖, 苗种培育, 细鳞鱼, 鱼苗生产, 激素诱导, 大规模生产, 人工饲养, 颗粒饲料, Lenok（ Brachymystax lenok） , Artificial breeding, Fertilization, Propagation

中文摘要：

[Objective] This paper aimed to summarize the results of the lenok reproduction in a hatchery, including growth of the artificially bred lenok, artificial propagation and fry rearing. [Method] Lenok (Brachymystax lenok) collected at wild were fed with pelleted feed and cultured to maturity in a flowing-water pond. The broodstocks were hormonally induced to spawn, and fry were reared from 2003 to 2010 in order to obtain a suitable and reliable method for the mass production of lenok juveniles. The embryos were hatched at accumulative temperature of up to 180-213 day degree at water temperature of 8-10 ℃. [Result]The results showed that 68%-85% of success rate was obtained with the eyed rate (fertilizing rate) of 32.8%-83%, hatching rate of 56.5%-87%, and emerging rate of 59.9%-90%. The fry developed into swim-up stage 10-12 days post-hatching. There were no significant differences in growth rate, fecundity and the eyed rate in the cultured lenok from those of the wild lenok. [Conclusion] Mass fry production of lenok could be achieved by hormonally induction.

英文摘要：

[ Objective] This paper aimed to summarize the results of the lenok reproduction in a hatchery, including growth of the artificially bred lenok, artificial propagation and fry rearing. [ Method ] Lenok （ Brachymystax lenok） collected at wild were fed with pelleted feed and cultured to ma- turity in a flowing -water pond. The broodstocks were hormonally induced to spawn, and fry were reared from 2003 to 2010 in order to obtain a suit- able and reliable method for the mass production of lenok juveniles. The embryos were hatched at accumulative temperature of up to 180 -213 day degree at water temperature of 8 -10 ~C. [Result]The results showed that 68% -85% of success rate was obtained with the eyed rate （fertilizing rate） of 32.8% -83%, hatching rate of 56.5% -87%, and emerging rate of 59.9% -90%. The fry developed into swim-up stage 10-12 days post - hatching. There were no significant differences in growth rate, fecundity and the eyed rate in the cultured lenok from those of the wild lenok. [ Conclusion] Mass fry production of lenok could be achieved by hormonally induction.

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