对虾选育群体形态性状对体质量的通径分析  被引量:8

Path Analysis of Morphometric Characteristics on Body Weight for Litopenaeus vannamei Breeding Population

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作  者:黄永春[1,2] 杨宏磊[1] 张哲 黎中宝[1,2] 郑伟刚[1,2] 邓超准 陈辉辉[1] 何晓雄[1] 杨章武 

机构地区:[1]集美大学水产学院,福建厦门361021 [2]福建省海洋渔业资源与生态环境重点实验室,福建厦门361021 [3]福建水产研究所,福建厦门364209

出  处:《中国农学通报》2016年第11期11-16,共6页Chinese Agricultural Science Bulletin

基  金:厦门市海洋经济创新发展区域示范项目"凡纳滨对虾育种;健康虾苗培育技术研究与产业化"(13PZY001SF25);福建省自然科学基金"中草药抗对虾白斑病综合症病毒(WSSV)机理的研究"(2013J01139);福建省科技项目"凡纳滨对虾产业化健康养殖;加工出口关键技术研究及示范推广"(2009N3011)

摘  要:为研究对虾选育群体形态性状与体质量的相互关系,随机选取经连续选育的第五代凡纳滨对虾268尾,测量体质量(W)、体长(X_1)、头胸甲长(X_2)、头胸甲高(X_3)、头胸甲宽(X_4)、第一腹节高(X_5)、第一腹节宽(X_6)、第二腹节高(X_7)、第二腹节宽(X_8)、第三腹节高(X_9)、第三腹节宽(X_(10))、第六腹节高(X_(11))、第六腹节宽(X_(12))、尾长(X_(13))共14个形态性状并进行相关分析及通径分析,研究各形态性状对体质量的影响。结果表明体长(X_1)、头胸甲长(X_2)、头胸甲高(X_3)和头胸甲宽(X_4)对体质量的通径系数达到极显著水平(P<0.01),是直接影响体质量的重要指标,其中体长的通径系数最大,是影响体质量的最主要因素,4个形态性状的决定系数之和达0.9311,成为影响体质量的主要形态性状,分别建立体质量(W)与体长(X_1)、头胸甲长(X_2)、头胸甲高(X_3)和头胸甲宽(X_4)关系的回归方程:W=0.0136X_1^(2.9559)(R^2=0.9642),W=0.7969X_2^(2.4042)(R^2=0.736),W=4.712X_3^(2.0628)(R^2=0.6373)和W=4.633X_4^(2.1903)(R^2=0.6819)。体长(X_1)、头胸甲长(X_2)、头胸甲高(X_3)、头胸甲宽(X_4)与体质量的多元回归方程为:Y=-21.798+2.569X_1+1.104X_2+1.069X_3+0.4231X_4。268 shrimps of the fifth generation of Litopenaeus vannamei breeding population were collected for measuring the morphometric characteristics,including body weight(W),body length(X_1),carapace length(X_2),carapace height(X_3),carapace width(X_4),the first abdominal segment height(X_5),the first abdominal segment width(X_6),the second abdominal segment height(X_7),the second abdominal segment width(X_8),the third abdominal segment height(X_9),the third abdominal segment width(X_(10)),the sixth abdominal segment height(X_(11)),the sixth abdominal segment width(X_(12)) and telson length(X_(13)).The correlation coefficients,path coefficients and decision coefficients were calculated,and the effects of morphometric characteristics on body weight were analyzed.The results showed that path coefficients of X_1,X_2,X_3 and X_4 on body weight were significant(P0.01).Body length(X_1) had the largest coefficient and was the key effective factor.High determination coefficient(∑R^2=0.9311) between the four morphometric characteristics and body weight indicated that they were the main influencing factors.The regression equations of body length(X_1),carapace length(X_2),carapace height(X_3),carapace width(X_4) and body weight(W) were W=0.0136X_1^(2.9559)(R^2=0.9642),W=0.7969 X_2^(2.4042)(R^2=0.7360),W=4.712X_3^(2.0628)(R^2=0.6373) and W=4.633X_4^(2.1903)(R^2=0.6819),respectively.The multiple regression equation for the estimation of body weight was Y=-21.798+2.569X_1+ 1.104X_2+1.069X_3+0.4231X_4.

关 键 词:凡纳滨对虾 体质量 形态性状 相关分析 通径分析 

分 类 号:S968.31[农业科学—水产养殖]

 

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