不同时期黄颡鱼催产效果比较
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摘要
依据黄颡鱼性腺发育方面的相关研究和对武汉市周边湖泊天然水体黄颡鱼繁殖情况的调查与分析,表明黄颡鱼具有较长繁殖期,可以多次进行人工催产繁育。结合生产实际,分前、后不同时期对从武汉周边采集的黄颡鱼亲本进行了较为集中的规模化催产,并进行了效果比较。催产批量进行的时间段分别设在4月底至6月初和8月中旬至9月初。结果表明,后期相对产卵量少(P<0.01),所需催产剂量较低,只需一次注射,效应时间较短,并且催产率、受精率都明显低于前期(P<0.01)。后期人工繁殖的鱼苗经过培育,可作为来年成鱼养殖所需的大规格苗种,同样具有生产意义。
According to the studies on gonad development and investigation into practice about reproduction of yellow catfish(Pelteobagrus fulvidraco), there was a long breeding period of yellow catfish in the same year, which can be used to induce spawning artificially. In view of the production practices, two periods of late April to early June and mid-August to early September were set for mass cases to induce spawning. Comparative efficacy between the two periods on induced spawning were investigated in this study and the results showed that the egg production, rate of ovulation and level of fertilization were lower, less hormone and shorter time to spawn were required during the later period. The aim of the catfish propagation in the later period was to provide bigger size fry for culture purposes, with a great of production significance.
According to the studies on gonad development and investigation into practice about reproduction of yellow catfish(Pelteobagrus fulvidraco), there was a long breeding period of yellow catfish in the same year, which can be used to induce spawning artificially. In view of the production practices, two periods of late April to early June and mid-August to early September were set for mass cases to induce spawning. Comparative efficacy between the two periods on induced spawning were investigated in this study and the results showed that the egg production, rate of ovulation and level of fertilization were lower, less hormone and shorter time to spawn were required during the later period. The aim of the catfish propagation in the later period was to provide bigger size fry for culture purposes, with a great of production significance.
引文
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[2]查金苗.黄冈策湖黄颡鱼繁殖生物学研究[D].武汉:华中农业大学,2002.
[3]杨丽冬,林绮媚,舒琥.黄颡鱼性腺发育的季节性变化[J].安徽农业科学,2018,46(3):63-67.
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[5]王卫民,严安生,张志国,等.黄颡鱼♀与瓦氏黄颡鱼♂的杂交研究[J].淡水渔业,2002,32(3):3-5.
[6]王卫民,严安生,查金苗,等.黄颡鱼两种人工繁殖方法的比较研究[J].淡水渔业,2002,32(2):7-8.
[7]李西雨.全雄和杂交黄颡鱼规模化人工繁殖和病害控制关键技术研究[D].上海:上海海洋大学,2015.
[8]李敏,胡从云,姚俊杰,等.黄颡鱼繁殖期的生物学特性[J].贵州农业科学,2009,37(5):119-120.
[9]马骏.洪湖黄颡鱼生物学的研究及洪湖鱼类小型化问题的初步探讨[D].武汉:中国科学院水生生物研究所,1988.
[10]刘世平.鄱阳湖黄颡鱼的生物学研究[J].动物学杂志,1997,32(4):10-16.
[11]湛海虎.赣江南昌段光泽黄颗鱼的年龄、生长和繁殖特性的初步研究[D].武汉:华中农业大学,2010.
[12]徐汪,王卫民.黄颡鱼在控温条件下的繁殖试验[J].江西水产科技,2002,(4):24-25,30.