中国水产科学2024，Vol.31Issue(6)：684-692,9.DOI:10.12264/JFSC2024-0024
额尔齐斯河黑鲫胚胎及早期仔鱼发育特征
Developmental characteristics of embryos and early larvae of Carassius carassius in the Irtysh River
摘要
Abstract
This study was conducted to understand embryonic and larval development of Carassius carassius distributed in the Irtysh River Basin,fill the gap in artificial breeding,and enrich the reproductive biological data of this species.This study collected C.carassius parents from the Irtysh River,obtained fertilized eggs through artificial induction of fertilization,and observed their early developmental characteristics.The results showed that the embryos hatched out of the membrane at a temperature of(19.89±0.64)℃ for 110 h and 35 min,and a total accumulated temperature of 2274.54 h·℃.The C.carassius embryo started from the fertilized egg,placenta was bulged 50 min after fertilization and developed to a blastocyst in 6 h 40 min.The gastrul embryo developed in 17 h 20 min,nerve developed in 26 h 20 min,sarcomere appeared in 37 h 20 min,heartbeat occurred in 70 h 35 min,and membrane emerged in 110 h 35 min.The embryonic development process went through seven stages(26 periods)of fertilized egg,cleavage,blastocyst,gastrulation,neural embryo,organ formation,and hatching.Lying at the bottom,the total length of the fry hatched after 1 d was(4.45±0.12)mm,and the yolk sac was full;the full length of the fry after 2 d was(5.13±0.18)mm,the pigmentation had increased,and a short swim was observed;the total length of the fry after 3 d was(5.69±0.17)mm,they were sensitive to external stimuli,the yolk sac was absorbed,and anal and caudal fins were clearly visible.This study is the first to report the timing and characteristics of the early development of the Irtysh River C.carassius under artificial induction conditions,thereby providing basic data and an important reference for further large-scale breeding of seedlings.关键词
额尔齐斯河/黑鲫/胚胎发育/仔鱼发育/种质资源Key words
Irtysh River/Carassius carassius/embryonic development/larvae development/germplasm resource分类
农业科技引用本文复制引用
韩豪祥,廉杰,金洪宇,马波..额尔齐斯河黑鲫胚胎及早期仔鱼发育特征[J].中国水产科学,2024,31(6):684-692,9.基金项目
农业农村部农业财专项"西北地区重点水域渔业资源与环境调查" （）
中国水产科学研究院基本科研业务费专项资金项目(2023TD07). （2023TD07）
