大泷六线鱼仔稚幼鱼形态发育与生长特性  

Morphological development and growth of larval and juvenile Hexagrammos otakii

作　　者：胡发文[1] 郭文[1] 潘雷[1] 高凤祥[1] 菅玉霞 张少春[1] 王雪[1] 

机构地区：[1]山东省海水养殖研究所,青岛266002

出　　处：《渔业科学进展》2012年第6期16-22,共7页Progress in Fishery Sciences

基　　金：山东省科技发展计划项目"大泷六线鱼规模化繁育技术研究"()资助

摘　　要：2009～2011年开展了大泷六线鱼规模化人工繁育技术的研究。通过显微观察、测量、拍摄记录大泷六线鱼仔、稚、幼鱼形态发育变化,并对其生长特性、摄食习性等进行了分析。大泷六线鱼初孵仔鱼全长6.18±0.50mm(n=60)。在水温16.0±0.5℃、盐度31、光照500～1000lx条件下,大泷六线鱼仔、稚、幼鱼生长呈现先慢后快再慢3个阶段:0～7d生长较为缓慢,3日龄仔鱼卵黄囊尚存,少部分仔鱼开始摄食轮虫;6日龄仔鱼卵黄囊消耗殆尽,开始摄食卤虫无节幼体,进入外源性营养阶段,7d后进入快速生长期;48日龄仔鱼开始进行配合饲料转化,生长速度趋缓,并逐渐稳定。依照TL=aD3+bD2+cD+d的方程式对前80日龄大泷六线鱼的全长与日龄进行回归,构建生长模型:TL(0～80)=-0.0002D3+0.0281D2-0.1557D+7.376(R2=0.9939),并根据其生长规律分别构建了0～7d、7～48d和48～80d的生长模型:TL(0～7)=0.0046D3-0.0572D2+0.3831D+6.1751(R2=0.9971),TL(7～48)=0.0005D3-0.0267D2+0.931D+2.269(R2=0.9973),TL(48～80)=-0.0001D3+0.0187D2-0.2045D+24.646(R2=0.9998)。The post embryonic morphological development of He：ragrammos otaleii was observed, measured and recorded by a micro cinematographic system to explore the morphological development characteristics in different stages of larval and juvenile fish. Newly hatched larvae, 6.18＋050 mm long and depending entirely on the egg-contained energy, were nursed at 16.0±0.5℃, salinity 31, illumination 500-1 000 lx. At 3 dph （days post hatching）, 7.55-5 0.27mm in length, with the rudimental yolk sac at abdomen, some larvae started feeding rotifers, and the development entered the exogenous feeding stage. After yolk was exhausted at 6 dph, the larvae started feeding Arternia nauplii. At 48 dph, the larvae started feeding compound feeds. The relationship between total length （TL） and days post hatching （D） for 0-7d,7--48d,and 48-80d fish was described as： TL（0～7）=0.0046D3-0.0572D2＋0.3831D＋6.1751（R2=0.9971）,TL（7～48）=0.0005D3-0.0267D2＋0.931D＋2.269（R2=0.9973）,TL（48～80）=-0.0001D3＋0.0187D2-0.2045D＋24.646（R2=0.9998）.

关 键 词：大泷六线鱼 仔、稚、幼鱼 形态发育 生长 

分 类 号：S917.4[农业科学—水产科学]