摘要
对红头丽体鱼[Cichlasoma synspilum(♀)]×红魔丽体鱼[C.citrinellum(♂)]杂交子一代(F1)(俗称"血鹦鹉")的胚胎及仔鱼形态发育进行观察,描述了各发育时期的发育时序和形态特征。平均受精率为(91.33±3.06)%,平均孵化率为(91.67±2.08)%;血鹦鹉的受精卵呈椭圆球形,黏性,有浅黄、白灰和红褐3种颜色,无油球,平均卵长径为(1.89±0.04)mm;发育过程可分为6个阶段:受精卵阶段、卵裂阶段、原肠期、神经胚期、器官形成期和孵出期,并进一步分为28个发育分期;在水温(30±0.5)℃下历时约52 h 36 min完成孵化。初孵仔鱼全长(3.71±0.05)mm,卵黄长径为(1.74±0.09)mm,短径为(1.25±0.07)mm,于第3天开始摄食轮虫,孵出后第5天卵黄囊完全消失。第13天全长(11.86±1.02)mm,各鳍条基本形成,进入稚鱼期。
We observed the embryonic and larval development of hybrids between Cichlasoma synspilum（ ♀）and C. citrinellum （♂）. The average fertilization rate and hatching rate were（91. 33 ± 3. 06）% and（91. 67 ± 2. 08）% ,respectively. The oval-shaped and adhesive fertile egg had three colors such as light yellow,white-gray and red brown without oil globule. The average length of fertile egg was（1. 89 ± 0. 04）mm. The progress of embryonic development comprised six stages：zygote stage,cleavage stage,gastrula stage,neurula stage,organogenesis stage and hatching stage,each divided into 28 periods. At water temperature of（30 ± 0. 5）℃ , the hatching time was 52 h 36 min. The total length of newly hatched larvae was（3. 71 ± 0. 05）mm with yolk sac length of（1. 74 ± 0. 09）mm in long diameter and（1. 25 ± 0. 07）mm in short diameter. The larva started to ingest rotifers after 3 d,and the yolk sac was consumed completely 5 d later. On 13th day,the total length of the larvae was（11. 86 ± 1. 02）mm and most of fin rays appeared, indicating that the larvae turned into juveniles.
出处
《南方水产科学》
CAS
CSCD
北大核心
2014年第3期38-46,共9页
South China Fisheries Science
基金
天津市科技计划项目(12ZCZDNC01100,12ZCDZNC06000,10ZHXHNC05500)
国家星火计划项目(2011GA610002)
天津市应用基础及前沿技术研究计划项目(11JCYBJC08800)
关键词
红头丽体鱼×红魔丽体鱼子一代
胚胎发育
仔鱼形态
Cichlasoma synspilum（♀）× C. citrinellum（♂） embryonic development
larval morphological characteristics
