水产科技情报2026，Vol.53Issue(3)：143-146,4.DOI:10.16446/j.fsti.20241100101
长吻鱼危的胚胎发育过程观察
Observation of the embryonic development process of Leiocassis longirostris
朱守昊 1韩翔 1邬明光2
作者信息
- 1. 上海市宝山区动物疫病预防控制中心,上海 201900
- 2. 上海市宝山区农产品质量安全中心,上海 201900
- 折叠
摘要
Abstract
To elucidate the sequential characteristics and morphological changes during embryonic development of Leiocassis longirostris,the embryonic development process was systematically observed under conditions of 25℃water temperature and gentle water flow.The results showed that fertilized eggs hatched into newly-hatched larvae after 50 h 15 min.The embryonic development process sequentially underwent seven stages:blastodisc stage,cleavage stage,blastula stage,gastrula stage,neurula stage,organogenesis stage,and hatching stage.The main morphological features of each stage were as follows:a translucent blastodisc formed during the blastodisc stage;the embryo appeared mulberry-shaped during the cleavage stage;the animal pole protruded prominently and then gradually flattened during the blastula stage;the germ layers progressively enveloped the yolk during the gastrula stage;the blastopore closed and the embryonic ring disappeared during the neurula stage;eye buds differentiated and the tail bud formed with rhythmic twitching during the organogenesis stage;during the hatching stage,the tail broke through the membrane first,and the embryo eventually completely emerged through continuous body move-ments.This study provides a theoretical basis for optimizing artificial reproduction techniques and resource conser-vation.关键词
长吻鱼危/胚胎发育/形态特征/发育时序/人工繁育Key words
Leiocassis longirostris/embryonic development/morphological characteristics/developmental chro-nology/artificial propagation引用本文复制引用
朱守昊,韩翔,邬明光..长吻鱼危的胚胎发育过程观察[J].水产科技情报,2026,53(3):143-146,4.
