文章摘要
四川华鳊仔稚鱼生长与形态发育研究
Growth and morphological development of larva and juvenile Sinibrama taeniatus
投稿时间:2019-06-27  修订日期:2019-07-23
DOI:
中文关键词: 四川华鳊  仔稚鱼  生长  形态发育
英文关键词: Sinibrama taeniatus  larvae and juveniles  growth  morphological development
基金项目:长江渔业资源与环境调查(CJDC-2017-12)和重庆市社会事业与民生保障科技创新专项(重点研发项目)资助(编号:cstc2017shms-zdyf0201)
作者单位E-mail
王亚利 重庆市西南大学生命科学学院 13647682962@163.com 
刘玥 重庆市西南大学生命科学学院  
田佳佳 重庆市西南大学生命科学学院  
尹敏 重庆市西南大学生命科学学院  
蔡瑞钰 重庆市西南大学生命科学学院  
王志坚 重庆市西南大学生命科学学院 wangzj1969@126.com 
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中文摘要:
      为积累四川华鳊(Sinibrama taeniatus)的发育生物学资料和完善苗种培育技术,本实验使用显微数码拍摄系统对四川华鳊仔稚鱼的外部形态与内部结构特征进行观察。结果表明:在水温(25 ± 0.5)℃条件下,四川华鳊初孵仔鱼全长为(4.54 ± 0.04)mm,卵黄囊前部椭圆,后部呈棒状,体积为(0.26 ± 0.01)mm3。卵黄囊期仔鱼从初孵到卵黄吸收完全为止,历时8 d,全长特定生长率为5.99%。仔鱼出膜后3 d开始摄食,混合营养期为5 d,卵黄囊体积(V)与日龄(D)的关系:V=-0.0049 D3+0.0369 D2-0.1333 D+0.2583(R2=0.9947)。晚期仔鱼从卵黄囊消失到鳞片出现,历时25 d,全长特定生长率为2.16%。稚鱼期从鳞片开始出现到鳞片完整,历时53 d,全长特定生长率为0.90%。整个仔稚鱼阶段全长(TL)和日龄(D)的相关方程为:TL=-7×10-7 D3-0.0011 D2+0.2820 D+4.7083(R2=0.9957)
英文摘要:
      To accumulate the developmental biology and perfect the breeding technology of Sinibrama taeniatus, the morphological and anatomic development of larva and juvenile S. taeniatus was observed by digital camera system in this study. The results showed: the total length of S. taeniatus after hatching was (4.54 ± 0.04) mm at (25 ± 0.5) ℃. The volume of yolk sac was (0.26 ± 0.01) mm3, whose anterior portion was oval and posterior portion was rod-shaped. The development of yolk sac larvae from the hatching to the yolk absorption took about 8 days and the special growth rate of total length was 5.99%. During that period, the larvae started feeding on 3th day and the stage of mixed nutrition lasted 5 days. The relationship between yolk sac volume (V) and age (D) can be conclude in the equation: V=-0.0049 D3+0.0369 D2-0.1333 D+0.2583 (R2=0.9947). The late larvae with the disappeared yolk sac completely relied on the exogenous material to obtain energy until the scale appeared.This developmental stage lasted 25 days and the special growth rate of total length was 2.16%. During the juvenile period, the scales began to appeare to complete lasted 53 days, and the special growth rate of total length was 0.90%. The relation between total length (TL) and age (D) of larva and juvenile S. taeniatus could be described by the appropriate equations as follows: TL=-7×10-7 D3-0.0011 D2+0.2820 D+4.7083 (R2=0.9957).
相关附件:   仔稚鱼发育图版  修改说明  修改说明  矢量图
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