1+龄刀鲚与暗纹东方鲀成鱼的混养自繁试验

Research on polyculture of one-year-old Coilia nasus with adult Takifugu obscures and natural reproduction of C. nasus

摘要:

为提高刀鲚和暗纹东方鲀的池塘养殖效益以及获得大规格刀鲚鱼种,2021年在上海市水产研究所奉贤科研基地的4口池塘中进行了1⁺龄刀鲚(3 000尾/hm²)与暗纹东方鲀成鱼(12 000尾/hm²)的混养试验以及刀鲚生态自繁养殖试验。经过132 d的养殖,刀鲚出塘规格达到24.99～59.90 g/尾,成活率为15.0%～54.1%,其中有3口试验池塘获得了大规格刀鲚自繁鱼种,数量分别为2 515、2 871、3 399尾；暗纹东方鲀出塘规格在280.2～296.3 g/尾,单位面积产量达到3 372.8～3 502.5 kg/hm²,成活率达97.8%～100.0%。

Abstract:

In order to improve the efficiency of pond culture of Coilia nasus and obtain large-sized tapertail anchovy fingerlings,the polyculture experiment of one-year-old C. nasus and adult Takifugu obscures and natural reproduction of C. nasus were carried out in four earthen ponds of Fengxian Research Base of Shanghai Fisheries Research Institute in 2021.The polyculture intensity of one-year-old C. nasus and adult T. obscures was 3 000 ind/hm² and 12 000 ind/hm²,respectively.The results showed that the harvested weight of C. nasus reached 24.99-59.90 g/ind,the survival rate was 15.0%-54.1%.There were three experimental ponds obtained large-sized tapertail anchovy fingerlings of the year,the total harvest number was 2 515,2 871 and 3 399 individuals respectively.The final weight of adult T. obscures was 280.2-296.3 g/ind,the yield reached 3 372.8-3 502.5 kg/hm²,and the survival rate was 97.8%-100.0%.