高体革鯻仔稚鱼的生长和发育
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科技基础条件平台(803001-1);珠江水产研究所所长基金(2001-G1)


Growth and development of larva, juveniles of Scortum barcoo
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    摘要:

    通过观察、描述和拍照对高体革鯻(Scortum barcoo)仔、稚鱼的生长和发育进行了研究,以了解高体革鯻仔、稚鱼的发育规律,为规模化苗种培育工作提供基础数据。在水温26.6~29.7 ℃的培养条件下,高体革鯻初孵仔鱼全长(2.65±0.19) mm (n=20),其卵黄囊体积为(0.74±0.15) mm3(n=20),油球体积为(0.07±0.17) mm3 (n=20)。1日龄仔鱼,眼睛有色素沉积,鳃弓显现;2日龄仔鱼,嘴可张开,肠道会蠕动,鳔可见;3日龄仔鱼,开口摄食,个体发育进入仔鱼后期;20日龄,运动器官发育完全并出现鳞片,个体发育进入稚鱼期;23日龄,稚鱼侧线鳞可见;28日龄,全身批鳞,个体发育进入幼鱼期。对仔稚鱼全长和日龄进行回归,其生长模型为TL=-0.0003D3+0.0339D2+0.1992D+3.4288(R2=0.9913)。体重与体长的相关式为W=0.0001L2.5059(R2=0.9976)。体高与体长的相关式为L=0.0005H3-0.0353H2+1.0125H-4.620(R2=0.993)。

    Abstract:

    Scortum barcoo was an excellent economical fresh water fish which was native in Australia and introduced into China in 2001. After several years domesticated, it can be reproduced and have been an aquaculture target in China, but the fry produce efficiency was very low. In order to make knowledge of growth and development of larva, juveniles of Scortum barcoo and offer basic data for large-scale fry produce, it was studied in this paper by observation, description, and photograph on growth and development. Larva body length of the newly hatching larva ranged from 2.32 mm to 2.98 mm in total length when the water temperature was about 26.6-29.7 ℃. The volume of the larva’s yolk sac and oil globule was (0.74±0.15) mm3 (n=20) and (0.07±0.17) mm3 (n=20) respectively. Coloration of eyes by pigment and 4 pair of branches appeared on 1-day-old. Larva mouth shut up, gut started peristalsis, and swim bladder occurred on 2-day-old. Larva started feeding on 3-day-old. Hereafter, the ontogeny embarked on the post-larval stages. The ontogeny larva was on the juvenile stages after 20 days, larva fin ray completely developed, and scales occurred. Lateral line scale occurred on 23-day-old. Scales entirely developed on 28-day-old, and the ontogeny embarked on the fingerling stages. The relationship between total body length (TL) and age in days (D) was described as: TL=-0.0003D3+0.0339D2+0.1992D+3.4288(R2=0.9913). The relationships between body length (L) and body weight (W) of larva and juveniles of Scortum barcoo was described as: W=0.0001L2.5059R2=0.9976). The relationship between body length and body height during development of Scortum barcoo larva, juveniles was significant and the formula was described as: L=0.0005H3-0.0353H2+1.0125H-4.620(R2=0.993)。All these data would be benefit with practice of Scortum barcoo fry production.

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骆豫江,朱新平,潘德博,陈昆慈,李凯彬.高体革鯻仔稚鱼的生长和发育[J].水产学报,2008,32(5):697~703

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  • 收稿日期:2008-09-03
  • 最后修改日期:2008-09-03
  • 录用日期:2008-09-03
  • 在线发布日期: 2008-09-03
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