大黄鱼群体选育世代F_1和F_2生长比较分析  

Comparison of Growth in Generations F_1 and F_2 of Large Yellow Croaker Larimichthys crocea Bred Selectively

作　　者：刘招坤 

机构地区：[1]宁德市水产技术推广站,福建宁德352100

出　　处：《水产科学》2015年第1期38-42,共5页Fisheries Science

基　　金：福建省区域重大项目(2012N3013)

摘　　要：对网箱养殖的3—10月龄的大黄鱼群体选育世代F1和F2,进行连续逐月体长和体质量测定,分析比较两个选育世代的养殖生长效果。结果显示,F1和F2体长平均变异系数分别为0.11、0.11,体质量平均变异系数分别为0.33、0.32,两个群体之间的体长和体质量变异系数基本一致,群体内体质量的变异系数大于体长;F1和F2体长相对生长率的平均值分别为0.40%/d和0.37%/d,特定生长率的平均值分别为0.88%/d和0.73%/d,体质量相对生长率的平均值分别为0.47%/d、0.46%/d,特定生长率的平均值分别为2.54%/d和2.19%/d,F1总体增长速度明显快于F2;两个群体均表现为等速生长类型。The body length and body weight were monthly measured in 3—10month old cage-cultured F1 and F2large yellow croaker Larimichthys crocea bred selectively to compare the growth performance between F1 and F2.The results showed that the F1 and F2 had mean coefficient variation of 0.11 in body length,mean coefficient variation of 0.33 and 0.32 in body weight,respectively,with the same trend.However,there was greater coefficient variation within one generation in body weight than that in body length.Further analysis revealed that the mean daily relative growth rate in body length was 0.40%in F1 and 0.37%in F2,and the mean daily specific growth rate 0.88%in F1 and 0.73%in F2.The mean daily relative growth rates in body weight was 0.47%in F1 and 0.46%in F2,and the mean daily specific growth rate 2.54%in F1 and 2.19%in F2,indicating that there was higher growth rate in F1 than in F2,two generations being characterized by a uniform growth.

关 键 词：大黄鱼 群体选育 F1 F2 生长 

分 类 号：S965.322[农业科学—水产养殖]