北部湾长肋日月贝形态性状对活体质量的影响分析  

The relationship between shellmorphology and body weight of Amusium pleuronectes in Beibu Bay Costal Area

作　　者：杨彬[1] 谢恩义[1] 贾柽[1] 

机构地区：[1]广东海洋大学水产学院,广东湛江524088

出　　处：《水产养殖》2013年第7期14-18,共5页Journal of Aquaculture

基　　金：广东省科技厅项目(2010B080703022;2010B020201015;2006B60501016;2009B080701048);广东省海洋与渔业局(A201008E02)

摘　　要：选取497只采自北部湾不同站点的长肋日月贝(Amusium pleuronectes),测定其壳长、壳高、壳宽和活体质量,计算相关系数。利用通径分析方法计算以长肋日月贝形态性状为自变量对活体质量作因变量的通径系数、决定系数。结果表明,长肋日月贝的壳长、壳高、壳宽与活体质量的相关系数均达到极显著水平(P<0.01);壳长对活体质量的直接影响(0.976)最大,是影响质量的主要因素。壳高和壳宽与活体质量对活体质量的直接影响较小,但是两者对活体质量的间接影响较大,是影响活体质量的次要因素。利用多元回归分析方法建立壳长、壳高、壳宽对活体质量的回归方程:W=-19.231+0.976H+0.097L+(-0.165G),该方程对长肋日月贝遗传育种提供一定的理论依据。The experiment collects data from 497 Amusium pleuronectes in Beibu Bay by measuring the shell length（H）,the shell thickness（L）,the shell heigh（tG）,the live body weigh（tW）and calculating the correlation cofficient. Uses the first 3 Amusium pleuronectes as independent variables,while using live body weight as a dependent variable for path analysis. Calculates path coefficients and correlation index. The results show that 3 correlation coefficients between the live body weight are all very significant difference（P〈0.01）. Shell length（H） as a very effective factor has predominant direct effect （0.976）and determ inacy on weight traits. Shell thickness （L）and shell height（G）have slightly direct effect and significant direct and significant indirect effect on weight traits,which is the secondary factor. The multiple regression equation obtained to estimate live body weight as W =（-19.231）＋0.976H＋0.097L-0.165G.

关 键 词：长肋日月贝 形态性状 活体质量 相关系数 通径分析 

分 类 号：S968.31[农业科学—水产养殖]