摘要
在海水温度10.0~16.0℃条件下,观察狼鳗幼鱼的生长特性,对狼鳗幼鱼相关生长数据进行测定分析,结果显示,初孵幼体[平均体质量(0.05±0.01)g,平均体长(4.30±0.01)cm]经11个月生长,平均体质量可达(500.35±44.47)g、平均体长可达(72.65±6.32)cm。体质量(m)与月龄(t)之间呈二次函数关系:m=5.7228t^(2)-21.545t+13.863,r^(2)=0.9868,平均日增量1.52g/d,其平均体质量特定生长率为2.79%/d;体长(L)与月龄之间呈线性相关:L=6.3452t-1.4895,r^(2)=0.9824,平均日增长0.21cm/d,其平均体长特定生长率为0.86%/d。体质量与体长回归曲线为m=0.0033L^(2.8258)(r^(2)=0.9705),b为2.8258,幂函数指数小于3,体质量、体长增长速度不一致,正处于负异速生长阶段。体长在7.6月龄出现拐点,体质量未出现拐点。体长的变异系数为0.15%~8.95%,体质量的变异系数为1.79%~11.80%,生长离散呈加剧—减弱的变化规律。肥满度为0.06~0.30,整体呈先升后降的趋势。在10.0~16.0℃内,狼鳗11个月可生长至500g,低温下生长快速,可高密度养殖,很有开发前景。
The growth characteristics of juvenile wolf eel Anarrhichthys ocellatu were observed and researched under the sea water temperature of 10.0—16.0℃.Related growth data were measured and analyzed.The results showed that the average initial body weight and average body length of the newly hatchings were increased from(0.05±0.01)g and(4.30±0.01)cm to(500.35±44.47)g and(72.65±6.32)cm after 11 months of growth.There was quadratic function between body weight(m)and age(t)(month):m=5.7228t2-21.545t+13.863,r^(2)=0.9868,with the average daily weight gain of 1.52 g and instantaneous weight growing rate of 2.79.There was linear relationship between the total length(L)and age:L=6.3452t-1.4895,r^(2)=0.9824,with average daily total length gain of 0.21 cm,and instantaneous total length growing rate of 0.86.The regression curve between body weight and length was m=0.0033L^(2.8258),r^(2)=0.9705,with the power of 2.8258,less than 3,indicating that the growth rate of body weight and length was not consistent,with a negative allometric growth stage.The body length had an inflection point at the age of 7.6 months,and the weight did not appear.The coefficient variation of body weight and length was changed from 1.79 to 11.80 and 0.15 to 8.95,the fish population showed a change in the growth dispersion intensification-weakening.Condition factor was changed from 0.06 to 0.30 in different months,and the change in condition factor was firstly increased and then decreased.The 11 month old fish had average body weight of 500 g under the sea water temperature of 10.0—16.0℃,and the wolf eel grow rapidly at low temperature,can farm at high density with promising development prospects.
作者
刘宇岩
李凤辉
朱文静
边力
葛建龙
刘长琳
曲江波
高文磊
陈四清
LIU Yuyan;LI Fenghui;ZHU Wenjing;BIAN Li;GE Jianlong;LIU Changlin;QU Jiangbo;GAO Wenlei;CHEN Siqing(College of Fisheries and Life Science,Shanghai Ocean University,Shanghai 201306,China;Key Open Laboratory of Sustainable Utilization of Marine Fishery Resources,Ministry of Agriculture and Rural Affairs,Yellow Sea Fisheries Research Institute,Chinese Academy of Fishery Sciences,Qingdao 266071,China;Yantai Tianyuan Aquatic Products Co.,Ltd.,Yantai 265619,China)
出处
《水产科学》
CAS
CSCD
北大核心
2022年第4期629-635,共7页
Fisheries Science
基金
农业农村部引进国际先进农业科学技术计划(948计划)项目(2014-Z11)
中国水产科学研究院基本科研业务费专项资金资助项目(2012A0701).
关键词
狼鳗
幼鱼
水温
人工养殖
生长特性
Anarrhichthys ocellatu
juvenile
water temperature
artificial culturing
growth characteristics
作者简介
刘宇岩(1996-),男,硕士研究生,研究方向:水产养殖学.E-mail:157107719@qq.com;通讯作者:陈四清(1966-),男,研究员,博士生导师,研究方向:水产养殖学.E-mail:chensq@ysfri.ac.cn.
