摘要
于2006年2—7月在珠江肇庆江段进行鱼苗采样,监测该江段鲤早期资源状况,同时对人工鱼巢中鲤的胚胎进行培育、观察。结果表明:鲤鱼苗出膜时,发育期已达眼黑素期,胚胎发育时序较一般鱼类提前,具有良好的生态适应性;鳔一室期,鱼苗体长为7.5 mm,胸鳍基部无色素,身体肌节数为36对左右;孵出后第25 d,鳍条完全形成,出现少量鳞片,基本具备成鱼的特征。2006年肇庆江段鲤产卵期主要在2月初至4月下旬,有多批次的产卵,鲤总鱼苗径流量初步估计为2.39×106尾。同时,对珠江肇庆江段鲤的繁殖生态进行了讨论,并提出了一些对策及其保护措施。
The larval resources and samples collected from the collectors embryonic development of common carp Cyprinus carpio were observed held in Zhaoqing section in Pearl River from February to July in 2006. by the It was found that melanic pigmentation appeared before hatching and that the duration of embryonic development was shorter than that in other fishes, indicating that the common carp had good adaptability to environment. The fry with one chamber in their air bladders had total length of 7.5 mm, and about 36 pairs of myomeres, without melanic pigmentation on the pectoral fins. 25 days after hatching, all fins were formed and scales occurred, showing the primary characters in the adult. The common carp spawned several times between 6 February and 24 April in 2006, and the total larval production was estimated to reach 2.39 million. The reproductive ecology and protection strategy were also discussed for common carp.
出处
《大连水产学院学报》
CSCD
北大核心
2009年第2期125-129,共5页
Journal of Dalian Fisheries University
基金
国家科技部项目(2005DIB3J023)
广东省自然科学基金资助项目(5004163)
关键词
珠江
鲤
早期发育
补充群体
Pearl River
common carp
early morphogenesis
larval resources
