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Position: Home > Articles > Study on early development and feeding of larval Sebastes schlegelii Progress in Fishery Sciences 2010,31 (2) 10-17

黑鲪早期发育与摄食的初步观察

作  者：
张静;薛美岩;姜海滨;杜荣斌;刘丽娟
单  位：
上海海洋大学水产与生命学院;烟台大学海洋学院;山东省海洋水产研究所
关键词：
黑鲪;早期发育;不可逆转点;摄食节律
摘  要：
对黑鲪Sebastes schlegelii早期发育及摄食进行了研究。结果表明,在水温15.4～16.0℃、盐度30～32、pH8.4的培养条件下,黑鲪初产仔鱼全长为6.07±0.25mm,腹部有残存的卵黄囊;1日龄仔鱼全长为6.21±0.31mm,大部分仔鱼进入摄食期,开口饵料为经小球藻强化过的褶皱臂尾轮虫;20日龄仔鱼全长为8.81±0.40mm,开始增投经营养强化的卤虫无节幼体,仔鱼进入快速生长期。依照TL=aD3+bD2+cD+d方程式,对仔鱼个体的全长与日龄进行回归,得到其生长模型为:TL(mm)=0.0096D2-0.0415D+6.7503(R2=0.9877)。仔鱼耐受饥饿的时间临界点(PNR)发生在产出后第4天(3日龄),不可逆转饥饿期的时间为2d。黑鲪仔稚鱼在24h内均有不同程度的摄食。1日龄仔鱼的摄食高峰出现在8:00,5日龄仔鱼摄食高峰则出现在16:00,12日龄仔鱼的摄食强度在12:00达到最大,相应的摄食率高峰出现在16:00,19日龄仔鱼在12:00～0:00出现摄食率高峰,24日龄稚鱼的摄食强度在12:00达到最大,30日龄稚鱼的摄食高峰出现在12:00～16:00,且16:00的峰值明显高于12:00,24h内摄食率达到100%。结果表明,黑鲪仔稚鱼无明显的摄食节律,属于全天摄食型,摄食高峰出现在白天。
译  名：
Study on early development and feeding of larval Sebastes schlegelii
作  者：
ZHANG Jing1,2 XUE Mei-yan1,2 JIANG Hai-bin2DU Rong-bin3 LIU Li-juan2(1College of Fisheries and Life Science,Shanghai Ocean University,201306)(2Marine Fisheries Research Institute of Shandong Province,Yantai 264006)(3Marine College,Yantai University,264005)
关键词：
Sebastes schlegelii Early development Point of no return (PNR)Feeding rhythm
摘  要：
The early development and feeding of larval Sebastes schlegelii were studied at water temperature of 15.4～16.0 ℃,salinity 30～32 and pH 8.4.Results showed that the total length of the newly hatched S.schlegelii larvae was 6.07±0.25mm,with the rudimental yolk sac at abdomen.The total length of 1-day-old larvae was 6.21±0.31mm,and the larvae started exogenous feeding of rotifers Brachionus plicatilis which were nourished with unicellular algae (Chlorella sp.).The total length of the 20-day-old post-larvae was 8.81±0.40mm,feeding nauplii of brine shrimp Artemia salina.The relationship between increment in total length (TL) and the age in days (D) was described as:TL (mm) =0.009 6D2-0.041 5D + 6.750 3 (R2 = 0.987 7).In the starvation tests,negative growth of the starved fish was obvious.The 4th day after hatching is the critical time for a 3-day-old larva to resist starving.The period of no return (PNR) from re-gaining food was about two days.1-day-old larvae got the highest average feeding intensity at 8:00,while 5-day-old larvae at 16:00.Following the increase of catching ability,the feeding intensity reached the highest point at 12:00 for 12-day-old and 19-day-old larvae.24-day-old post larvae's feeding intensity reached the highest at 12:00.30-day-old post larvae get the highest feeding intensity from 12:00 to 16:00,and the peak at 16:00 is higher than that at 12:00 obviously.Larvae showed a feeding incidence of 100% in 24 h.Therefore,these results indicated that there was no obvious feeding rhythm in early development stage of S.schlegelii.Feeding rhythms of S.schlegelii larvae belonged to the all-day feeding with feeding peaks occurred at daytime.

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