广东池塘培育条石鲷仔、稚、幼鱼的早期发育和生长

研究了在广东饶平池塘人工培育的条石鲷(Oplegnathus fasciatus)仔、稚、幼鱼的形态发育和生长特性。条石鲷初孵的0日龄仔鱼全长(1.875 5±0.060)mm,卵黄囊长径(0.739±0.135)mm,短径(0.489±0.089)mm。在水温为22~23℃的前期培育条件下,3日龄仔鱼的卵黄被完全吸收,而到第4天,仅见到卵黄囊残余物。混合营养期仅1 d。在水温为24~27℃、盐度29~30、pH 7.4~8.2条件下,3日龄的仔鱼已开口,但仍不能主动摄食,4日龄仔鱼便进入了外源性营养阶段。8日龄鳃弓形成,12日龄尾椎弯曲,25~30日龄仔鱼的背鳍、胸鳍、腹鳍、臀鳍、尾鳍先后出...

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Published in南方水产科学 Vol. 10; no. 6; pp. 66 - 71
Main Author 区又君 李加儿 艾丽 谢菁
Format Journal Article
LanguageChinese
Published 中国水产科学研究院南海水产研究所,农业部南海渔业资源开发利用重点实验室,广东 广州510300%中国水产科学研究院南海水产研究所,农业部南海渔业资源开发利用重点实验室,广东 广州510300 2014
上海海洋大学水产与生命学院,上海201306
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ISSN2095-0780
DOI10.3969/j.issn.2095-0780.2014.06.009

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Summary:研究了在广东饶平池塘人工培育的条石鲷(Oplegnathus fasciatus)仔、稚、幼鱼的形态发育和生长特性。条石鲷初孵的0日龄仔鱼全长(1.875 5±0.060)mm,卵黄囊长径(0.739±0.135)mm,短径(0.489±0.089)mm。在水温为22~23℃的前期培育条件下,3日龄仔鱼的卵黄被完全吸收,而到第4天,仅见到卵黄囊残余物。混合营养期仅1 d。在水温为24~27℃、盐度29~30、pH 7.4~8.2条件下,3日龄的仔鱼已开口,但仍不能主动摄食,4日龄仔鱼便进入了外源性营养阶段。8日龄鳃弓形成,12日龄尾椎弯曲,25~30日龄仔鱼的背鳍、胸鳍、腹鳍、臀鳍、尾鳍先后出现,鳞片出现,进入稚鱼期。40日龄时进入幼鱼期,全身覆盖鳞片,条带全部形成,形态与成鱼相似。全长、体长、体质量和体高随日龄的生长速度均呈显著的指数函数关系,体高/全长之比在0~5日龄时急剧下降,随后逐渐增高,20日龄后趋于平缓。
Bibliography:Oplegnathus fasciatus; early development; growth; pond rearing; Guangdong
OU Youjun,LI Jia'er,AI Li,XIE Jing(1.Key Lab. of South China Sea Fishery Resources Exploitation & Utilization, Ministry of Agriculture; South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China; 2. College of Fisheries and Life, Shanghai Ocean University, Shanghai 201306, China)
44-1683/S
We investigated the early development and growth of larval,juvenile and young Oplegnathus fasciatus reared in pond in Raoping,Guangdong Province. The total length of newly-hatched larvae( 0-dah) was( 1. 875 5 ± 0. 060) mm with a yolk sac long in( 0. 739 ± 0. 135) mm and short in( 0. 489 ± 0. 089) mm. Under early rearing temperature of 22 ~ 23 ℃,the yolk was absorbed for 3-dah larvae,and only relic yolk sac could be found in 4-dah larvae,lasting only 1 d for mixotrophic period. Under conditions of 24 ~27 ℃,salinity 29 ~ 30 and pH 7. 4 ~ 8. 2,mouth opened for 3-dah larvae,but unable to forage actively; 4-dah
ISSN:2095-0780
DOI:10.3969/j.issn.2095-0780.2014.06.009