文章摘要
谢骏.人工诱导池塘养殖鳗鲡成熟产卵以及胚胎和仔鱼发育[J].水产学报,2005,29(5):
人工诱导池塘养殖鳗鲡成熟产卵以及胚胎和仔鱼发育
Spawning and development of embryo and larva in cultivated Anguilla japonica by artificial induction
投稿时间:2014-03-10  修订日期:2014-03-10
DOI:
中文关键词: 养殖鳗鲡 人工诱导 产卵 胚胎 仔鱼
英文关键词: cultivated Anguilla japonica artificial induction spawning embryo larva
基金项目:国家科技攻关项目
作者单位地址
谢骏 中山大学水生经济动物研究所暨广东省水生经济动物重点实验室 中国水产科学研究院珠江水产研究所 中山大学水生经济动物研究所暨广东省水生经济动物重点实验室 广东广州510275 中山大学水生经济动物研究所暨广东省水生经济动物重点实验室; 中国水产科学研究院珠江水产研究所; 中山大学水生经济动物研究所暨广东省水生经济动物重点实验室 广东广州510275
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中文摘要:
      降海鳗鲡一直是作为研究鳗鲡人工繁殖的材料,由于降海鳗鲡的资源衰退,选用池塘养殖鳗鲡作为亲本的研究成为热点.尽管人工诱导野生降海鳗鲡获得的胚胎发育过程的研究已报道,但人工诱导池塘养殖鳗鲡的胚胎及仔鱼早期发育未见报道.本文应用池塘养殖日本鳗鲡取代野生降海日本鳗鲡进行人工繁殖,2002年的孵化批次共80次,其中大部分为人工授精卵(60次),一部分(20次)为自然产卵.受精率为(44.03?21.99)%,孵化率为(65.76?19.48)%,共计获得苗种349.9万尾.连续记录了鳗鲡的胚胎和早期仔鱼的发育过程.在水温为20.5 ℃时,胚胎发育需要时间为49 h,所需积温1005 ℃?h;在水温为22.5 ℃时,胚胎发育需要时间为39 h,所需积温878 ℃?h;在水温为24.5 ℃时,胚胎发育需要时间为34 h,所需积温833 ℃?h.
英文摘要:
      In China, studies on the artificial inducement of reproduction in eel (Anguilla japonica) have been carried out since 1973. The silver migrated eel has been previously used as material fish for experiments on artificial inducement. Since the acquisition of wild silver eel has become difficult in recent years, the cultivated eels have been used as our experiment animals. Although the study on the process of the development of the embryo from the wild eel by artificial induction has been reported, the development of the embryo and larva from cultivatedeel has not been published. In this paper, the characters of embryos and early larvae of cultivated eel by artificial induction in every stage were observed and photographs were taken, the whole process of embryonic development lasted for about 49 h at 20.5℃, 39 h at 22.5℃ and 34 h at 24.5℃. The fertilized eggs of the fish are spherical and orange-yellowish, the diameter of swollen egg is 1.0 - 1.2 mm in water. Fertilized eggs were kept in seawater at 22.5 ℃. The first cleavage occurred at 1 h, epiboly began at 11 h, the embryonic body was formed at 28 h and hatching occurred at 39 h after insemination. Newly hatched larva were approximately 3.1 - 3.7 mm (total length) and similar to those of wild eel in terms of external features.
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