长鳍光唇鱼(Acrossocheilus longipinnis)人工繁殖和早期发育研究
Study on artificial propagation and early development of Acrossocheilus longipinnis
王岳松 1徐林 2杨洋 1程睿 1王崇 1何大江 2黎国樑 2马海涛 2毕建启 1陈锋 1万正平 3张志明1
作者信息
- 1. 水利部中国科学院水工程生态研究所/水利部水工程生态效应与生态修复重点实验室,湖北武汉 430079
- 2. 广西大藤峡水利枢纽开发有限责任公司,广西南宁 530000
- 3. 广州珠江水资源保护科技发展有限公司,广东广州 510000
- 折叠
摘要
长鳍光唇鱼(Acrossocheilus longipinnis)是红水河珍稀特有鱼类,也是当地的重要经济物种.为实现长鳍光唇鱼苗种规模化生产,并为其增殖放流提供技术指导,对人工驯养的长鳍光唇鱼亲鱼进行强化培育和催产,采用干法授精获得受精卵,并观察其胚胎及仔鱼的发育过程.连续进行了 4次人工催产,催产率为(68.95±13.26)％、受精率为(68.50±19.82)％、孵化率为(80.00±10.23)％.长鳍光唇鱼受精卵为沉性卵,具弱黏性,呈金黄色,卵径为(2.42±0.06)mm,吸水膨胀后为(3.03±0.08)mm.胚胎发育过程历经胚盘形成期、卵裂期、囊胚期、原肠期、神经胚期、器官形成期和孵化期7个阶段、28个发育时期.水温22～24℃时,经66～74 h孵化出膜,积温为1 501.13℃·h.初孵仔鱼平均全长为(8.33±0.23)mm,肌节34对,4日龄仔鱼形成5条横斑雏形.卵黄囊期历时8 d,全长特定生长率为4.13％·d-1;仔鱼期共历时21 d,全长特定生长率为2.70％·d-1.研究结果对保护红水河鱼类资源及其多样性具有重要意义.
Abstract
Acrossocheilus longipinnis is a rare fish and an economically important species in the Hongshui River.To achieve large-scale production of A.longipinis fry and provide technical guidance for its proliferation and release,artificially domesti-cated A.longipinnis were intensively cultivated and induced to produce fertilized eggs by dry fertilization.The embryonic and larval development was observed.Four times of artificial inductions were performed.The oxytocin rate was(68.95±13.26)％,the fertilization rate was(68.50±19.82)％,and the hatching rate was(80.00±10.23)％.The fertilized eggs of the A.longipinnis were sedimentary,weakly viscous and golden in color.The egg diameter of the yolk was(2.42±0.06)mm,and the expansion of water absorption was(3.03±0.08)mm.The embryonic development process went through a total of 7 stages and 28 periods including blastogenesis stage,cleavage stage,blastocyst stage,gastrum stage,neuroembryo stage,organogenesis stage and hatching stage.The membrane was hatched after 66-74 h at the water temperature of 22-24℃,with an accumulated temperature of 1 501.13 ℃·h.The total length of the newly hatched larvae was(8.33±0.23)mm,with 34 pairs of sarcotomes.At 4 days after hatching,the larvae formed 5 transversely spotted embryonic prototypes.The yolk sac stage lasted for 8 d,with a total length special growth rate of 4.13％·d-1.The larvae stage lasted for 21 d,with a special growth rate of total length of 2.70％·d-1.The results are import-ant for protecting A.longipinnis resources and diversity of the Hongshui River.
关键词
长鳍光唇鱼/人工繁殖/胚胎发育/仔鱼生长/红水河Key words
Acrossocheilus longipinnis/Artificial propagation/Embryonic development/Larval growth/Hongshui River引用本文复制引用
基金项目
科技基础资源调查专项(2019FY1011900)
&&(DHB2022013)
&&(DJ-ZDXM-2020-02)
出版年
2024
NETL
NSTL
万方数据